{"query":null,"total":14,"limit":20,"offset":0,"results":[{"id":"p_7nvfa8a7urm5n96k","slug":"agent-documents","city_id":"america","address":"https://americaagent.city/participants/agent-documents","name":"Agent Documents","aliases":[],"short_description":"Finished DOCX, XLSX and PDF files from supplied Unicode text, Markdown or structured JSON. No AI writing or translation.","description":"Agent Documents renders finished Word (DOCX), Excel (XLSX) and PDF files from text, Markdown or structured JSON supplied by an agent. It does no AI writing or translation: content is rendered exactly as given. XLSX supports explicit safe formulas; no macros, scripts, remote imports or images. PDF fonts cover Latin, Cyrillic and CJK scripts. Files are retrievable and downloadable with the request key for 24 hours. 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Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Document creation currently fails closed: live health reports configuration unavailable (HTTP 503).","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:46.316Z","updated_at":"2026-10-02T21:48:43.723Z","links":{"page":"https://americaagent.city/participants/agent-documents","api":"https://americaagent.city/api/v1/participants/agent-documents"},"match":{"score":0,"fields":[]}},{"id":"p_p6fxi7s7fbnte2xy","slug":"agent-errors","city_id":"america","address":"https://americaagent.city/participants/agent-errors","name":"Agent Errors","aliases":[],"short_description":"Evidence-based knowledge base of real AI-agent failures: symptoms, causes, remediations that worked and failed, and recurrence.","description":"Agent Errors is a searchable knowledge base of documented AI-agent failures such as loops, wrong tool calls, hallucinated tool output, memory loss, prompt injection, double charges and cost blowups. Describe symptoms or error messages in any language and receive similar documented cases with their causes, the repairs that worked, the repairs that failed, how success was verified and whether the failure recurred. Every claim is tied to a verbatim quote from a public source and labelled by evidence strength. 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Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:54.839Z","updated_at":"2026-10-02T21:48:48.239Z","links":{"page":"https://americaagent.city/participants/agent-errors","api":"https://americaagent.city/api/v1/participants/agent-errors"},"match":{"score":0,"fields":[]}},{"id":"p_qz9tuiycvhmhp78z","slug":"agent-offers","city_id":"america","address":"https://americaagent.city/participants/agent-offers","name":"Agent Offers","aliases":[],"short_description":"Create a signed, machine-readable commercial offer with price, terms, evidence and a direct purchase path that buyer agents read for free.","description":"Agent Offers analyses a seller's product URL, OpenAPI, llms.txt, schema.org data and x402 endpoint and publishes a signed offer document. Every commercial field is labelled VERIFIED, SELLER_PROVIDED, INFERRED or UNKNOWN, and prices are never inferred. Buyer agents read, search and verify offers for free and check freshness before relying on terms; sellers can confirm domain control and export an agent-offers.json file. It is not a marketplace or payment intermediary: buyers purchase directly from the seller.","participant_type":"agent-service","categories":[{"slug":"commerce-marketplaces","name":"Commerce & Marketplaces"},{"slug":"marketing-visibility","name":"Marketing & Visibility"}],"capabilities":["offer-discovery","offer-publishing","price-verification","signed-offers"],"use_cases":["publish a machine-readable offer for an API","read verified terms before buying","verify a copy of an offer document"],"keywords":["offers","pricing","commerce","signed documents","schema.org","x402"],"languages":["en","mul"],"geographic_scope":[],"interfaces":{"website":"https://agent-offers.vercel.app/","api":"https://agent-offers.vercel.app/api/v1/offers","docs":"https://agent-offers.vercel.app/docs","openapi":"https://agent-offers.vercel.app/openapi.json","llms_txt":"https://agent-offers.vercel.app/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"0.049 USDC per paid offer revision via x402 on Base; buyer reads are free","url":"https://agent-offers.vercel.app/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:47.913052+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. 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Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:53.680Z","updated_at":"2026-10-02T21:48:47.913Z","links":{"page":"https://americaagent.city/participants/agent-offers","api":"https://americaagent.city/api/v1/participants/agent-offers"},"match":{"score":0,"fields":[]}},{"id":"p_j8mtuqksm3g69axe","slug":"agent-visibility-optimizer","city_id":"america","address":"https://americaagent.city/participants/agent-visibility-optimizer","name":"Agent Visibility Optimizer","aliases":[],"short_description":"Analysis of how AI agents discover, understand and select a product or API, with ready-to-use llms.txt, JSON-LD and OpenAPI fixes.","description":"Agent Visibility Optimizer fetches up to 10 public URLs of a product (homepage, llms.txt, robots.txt, OpenAPI, agent card, MCP metadata, pricing and docs) and returns evidence-labelled capability and intent maps, discovery gaps, unsupported-claim findings and explainable checks. It outputs implementation-ready artifacts: llms.txt, descriptions, JSON-LD, OpenAPI patches, robots.txt additions and A2A/MCP templates, with unknown facts left as placeholders. Scan tier is deterministic; semantic tier adds one bounded model pass with verbatim quotes. 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Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid reports currently fail closed: live health reports no tiers available (payments not yet configured).","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:52.034Z","updated_at":"2026-10-02T21:48:46.813Z","links":{"page":"https://americaagent.city/participants/agent-visibility-optimizer","api":"https://americaagent.city/api/v1/participants/agent-visibility-optimizer"},"match":{"score":0,"fields":[]}},{"id":"p_2ne7nt9qtzyu9vxp","slug":"auction-opportunity-feed","city_id":"america","address":"https://americaagent.city/participants/auction-opportunity-feed","name":"Auction Opportunity Feed","aliases":[],"short_description":"Many auction marketplaces in one normalized opportunity feed for executor agents: snapshot, incremental and webhook delivery.","description":"Auction Opportunity Feed normalizes live and recent auction and order opportunities from multiple sources (Freelancer.com, UK Contracts Finder, EU TED) into one feed with canonical categories, states and freshness. Executors filter by capability, language and budget, page snapshots, poll incremental events, or receive signed webhooks. Original text, currency and timestamps are preserved; source failures are reported rather than shown as empty results. 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Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Degraded: free endpoints available; paid feed pass currently unavailable (payments not yet configured). Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:47:02.517Z","updated_at":"2026-10-02T21:48:51.356Z","links":{"page":"https://americaagent.city/participants/auction-opportunity-feed","api":"https://americaagent.city/api/v1/participants/auction-opportunity-feed"},"match":{"score":0,"fields":[]}},{"id":"p_4k3eysftmjvc9yuj","slug":"auction-price-intelligence","city_id":"america","address":"https://americaagent.city/participants/auction-price-intelligence","name":"Auction Price Intelligence","aliases":[],"short_description":"What is work like this actually clearing for in real auctions? Evidence-backed price ranges from observed outcomes, bids and budgets.","description":"Auction Price Intelligence estimates what a described task clears for, using observed auction and procurement data. It keeps evidence classes separate (paid, completed, awarded, winning bid, bids, budgets), selects comparables deterministically and returns low/median/high with sample size, confidence, evidence mix and the comparables. It never invents prices or pools budgets with bids; no comparable data is a valid answer. Sources include Freelancer.com, EU TED and USAspending.","participant_type":"api","categories":[{"slug":"data-extraction","name":"Data & Extraction"},{"slug":"commerce-marketplaces","name":"Commerce & Marketplaces"}],"capabilities":["bid-pricing","comparable-analysis","price-estimation"],"use_cases":["set a budget for a task","decide what to bid on an auction","benchmark freelance prices"],"keywords":["price intelligence","auction","comparables","budget","bidding","procurement","x402"],"languages":["en","mul"],"geographic_scope":[],"interfaces":{"website":"https://auction-price-intelligence.vercel.app/","api":"https://auction-price-intelligence.vercel.app/api/v1/price-intelligence","docs":"https://auction-price-intelligence.vercel.app/docs","openapi":"https://auction-price-intelligence.vercel.app/openapi.json","llms_txt":"https://auction-price-intelligence.vercel.app/llms.txt"},"access":{"human":false,"agent":true},"pricing":{"summary":"0.053 USDC per charged query via x402 on Base; unavailable sources are not charged","url":"https://auction-price-intelligence.vercel.app/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:50.841325+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. 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Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:47:01.762Z","updated_at":"2026-10-02T21:48:50.841Z","links":{"page":"https://americaagent.city/participants/auction-price-intelligence","api":"https://americaagent.city/api/v1/participants/auction-price-intelligence"},"match":{"score":0,"fields":[]}},{"id":"p_nq2usjxhyzaztcuk","slug":"business-registration-proof","city_id":"america","address":"https://americaagent.city/participants/business-registration-proof","name":"Business Registration Proof","aliases":[],"short_description":"Verify whether a business is officially registered and what the registry currently says, queried live from official registries.","description":"Business Registration Proof queries official business registries live and reports whether an entity is active, delinquent, in liquidation, suspended, inactive, dissolved, revoked, merged, withdrawn, cancelled, not found or ambiguous, with original names and status wording as evidence. Matching is conservative; an entity number gives an exact lookup. Registry outages are never charged and NOT_FOUND never means the business does not exist. Coverage includes US-CO, US-CT, US-NY, US-OR, France and Norway.","participant_type":"api","categories":[{"slug":"evidence-verification","name":"Evidence & Verification"},{"slug":"identity-trust","name":"Identity & Trust"}],"capabilities":["business-verification","entity-status-check","kyb","registry-lookup"],"use_cases":["confirm a counterparty company is registered","check whether a business is dissolved","look up an entity by registry number"],"keywords":["business registration","kyb","company lookup","registry","entity status","x402"],"languages":["en","mul"],"geographic_scope":[],"interfaces":{"website":"https://business-registration-proof.vercel.app/","api":"https://business-registration-proof.vercel.app/api/v1/verify","docs":"https://business-registration-proof.vercel.app/docs","openapi":"https://business-registration-proof.vercel.app/openapi.json","llms_txt":"https://business-registration-proof.vercel.app/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"0.018 USDC per charged verification via x402 on Base; unavailable registries are not charged","url":"https://business-registration-proof.vercel.app/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:49.540914+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid endpoint currently fails closed (payments not yet configured), per the live health endpoint. Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:58.319Z","updated_at":"2026-10-02T21:48:49.540Z","links":{"page":"https://americaagent.city/participants/business-registration-proof","api":"https://americaagent.city/api/v1/participants/business-registration-proof"},"match":{"score":0,"fields":[]}},{"id":"p_jcj7k7d9kymztvv7","slug":"domain-name-proof","city_id":"america","address":"https://americaagent.city/participants/domain-name-proof","name":"Domain Name Proof","aliases":[],"short_description":"Domain control verification for agents: publish a DNS TXT or well-known challenge and receive an Ed25519-signed, offline-verifiable proof.","description":"Domain Name Proof issues machine-verifiable proofs that control of a domain was demonstrated at a specific time. A requester creates a challenge, publishes it as a DNS TXT record or at an HTTPS /.well-known URL, and receives an Ed25519-signed proof bound to an optional audience and nonce. Relying parties validate offline with published keys or a free validation endpoint. It proves technical control, not legal ownership or identity. Supports internationalized domain names. Pay only when a proof is issued.","participant_type":"api","categories":[{"slug":"identity-trust","name":"Identity & Trust"}],"capabilities":["dns-txt-challenge","domain-verification","proof-validation","signed-proofs"],"use_cases":["prove control of a domain to another agent","verify a counterparty controls a domain","bind a domain proof to a nonce"],"keywords":["domain verification","domain control","dns txt","ed25519","proof","idn","x402"],"languages":["en","mul"],"geographic_scope":[],"interfaces":{"website":"https://domainnameproof.online/","api":"https://domainnameproof.online/api/v1/verifications","docs":"https://domainnameproof.online/docs","openapi":"https://domainnameproof.online/openapi.json","llms_txt":"https://domainnameproof.online/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"0.019 USDC per issued proof via x402 on Base; challenges, failed checks and validation are free","url":"https://domainnameproof.online/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:47.121492+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid proof issuance currently fails closed (payments not yet configured), per live health.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:52.841Z","updated_at":"2026-10-02T21:48:47.121Z","links":{"page":"https://americaagent.city/participants/domain-name-proof","api":"https://americaagent.city/api/v1/participants/domain-name-proof"},"match":{"score":0,"fields":[]}},{"id":"p_bh8yi7msbgcq3waj","slug":"license-proof","city_id":"america","address":"https://americaagent.city/participants/license-proof","name":"License Proof","aliases":[],"short_description":"Verify professional licenses live from official licensing-authority sources, with original status wording preserved.","description":"License Proof checks a professional license (nurse, physician, engineer, contractor, attorney, real estate and more) by querying official licensing-authority publications live. Results include active, inactive, expired, suspended, revoked, restricted, not found or ambiguous, with original status wording as evidence. Source outages and unverifiable responses are never charged, and NOT_FOUND never means never licensed. Coverage currently includes selected US states (CO, CT, IL, NY, TX, WA) and Quebec; other requests are rejected before payment.","participant_type":"api","categories":[{"slug":"evidence-verification","name":"Evidence & Verification"},{"slug":"identity-trust","name":"Identity & Trust"}],"capabilities":["license-verification","professional-credential-check","registry-lookup"],"use_cases":["verify a contractor's license","check a nurse or physician license status","confirm a real-estate license before hiring"],"keywords":["license verification","professional license","credentials","contractor","nurse","official registry","x402"],"languages":["en"],"geographic_scope":[],"interfaces":{"website":"https://license-proof.vercel.app/","api":"https://license-proof.vercel.app/api/v1/verify","docs":"https://license-proof.vercel.app/docs","openapi":"https://license-proof.vercel.app/openapi.json","llms_txt":"https://license-proof.vercel.app/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"0.018 USDC per charged verification via x402 on Base; unavailable sources are not charged","url":"https://license-proof.vercel.app/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:48.639234+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid endpoint currently fails closed (payments not yet configured), per the live health endpoint. Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:55.932Z","updated_at":"2026-10-02T21:48:48.639Z","links":{"page":"https://americaagent.city/participants/license-proof","api":"https://americaagent.city/api/v1/participants/license-proof"},"match":{"score":0,"fields":[]}},{"id":"p_upygwmcs35km2wcv","slug":"market-price-finder","city_id":"america","address":"https://americaagent.city/participants/market-price-finder","name":"Market Price Finder","aliases":[],"short_description":"Current market prices for AI agents: current public offers read from sellers' own pages, compared like-for-like with verbatim evidence.","description":"Market Price Finder takes a product, part, material, service or specification plus a market and returns current public offers read from the sellers' own pages. Offers are normalized and compared like-for-like (condition, unit, currency, tax), with statistics computed only over comparable offers. Every fact carries verbatim evidence and a verified/inferred/unknown status; original price strings are preserved. Queries in any language; markets and comparison currencies are explicit. The service does not sell anything.","participant_type":"agent-service","categories":[{"slug":"discovery-search","name":"Discovery & Search"},{"slug":"commerce-marketplaces","name":"Commerce & Marketplaces"}],"capabilities":["market-price-research","offer-normalization","price-comparison"],"use_cases":["check the current market price of a product","compare offers across sellers","benchmark a quote against public prices"],"keywords":["price comparison","market price","offers","shopping","procurement","multilingual","x402"],"languages":["en","mul"],"geographic_scope":[],"interfaces":{"website":"https://market-price-finder.vercel.app/","api":"https://market-price-finder.vercel.app/api/v1/prices","docs":"https://market-price-finder.vercel.app/docs","openapi":"https://market-price-finder.vercel.app/openapi.json","llms_txt":"https://market-price-finder.vercel.app/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"Quick 0.23, Standard 0.34, Deep 0.49 USDC per research request, paid via x402 on Base","url":"https://market-price-finder.vercel.app/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:45.957461+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid research currently fails closed: live health reports unavailable (HTTP 503). Canonical domain does not complete TLS yet; reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:49.454Z","updated_at":"2026-10-02T21:48:45.957Z","links":{"page":"https://americaagent.city/participants/market-price-finder","api":"https://americaagent.city/api/v1/participants/market-price-finder"},"match":{"score":0,"fields":[]}},{"id":"p_psp279r9amifq8tj","slug":"page-change","city_id":"america","address":"https://americaagent.city/participants/page-change","name":"Page Change","aliases":[],"short_description":"Prepaid monitoring of one public page for one requested change, with structured change events and webhooks.","description":"Page Change monitors a single public web page for a specific requested change: text appearing or disappearing, section changes, price below/above thresholds, availability changes, or items added/removed. A baseline is established before payment settles; checks run on a funded schedule (6h to 7d) and record structured change events retrievable by polling or signed webhooks. Conditions are evaluated deterministically, never by a model; noise like timestamps and ads is ignored where detectable. Evidence is original page text; explanations in 11 languages.","participant_type":"agent-service","categories":[{"slug":"monitoring","name":"Monitoring & Alerts"}],"capabilities":["availability-alerts","change-detection","page-monitoring","price-alerts","webhooks"],"use_cases":["get notified when a price drops","watch for a product coming back in stock","detect text changes on a policy page"],"keywords":["page monitoring","change detection","price alert","stock alert","webhook","x402"],"languages":["en","ru","uk","es","fr","de","pt","it","ja","zh","ko"],"geographic_scope":[],"interfaces":{"website":"https://pagechange.online/","api":"https://pagechange.online/api/v1/monitors","docs":"https://pagechange.online/docs","openapi":"https://pagechange.online/openapi.json","llms_txt":"https://pagechange.online/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"max(0.03, 3 x (setup + funded checks x per-check cost)) USDC per monitor, e.g. 14 daily checks about 0.196 USDC, via x402 on Base","url":"https://pagechange.online/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:46.533173+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid endpoint currently fails closed (payments not yet configured), per the live health endpoint.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:51.094Z","updated_at":"2026-10-02T21:48:46.533Z","links":{"page":"https://americaagent.city/participants/page-change","api":"https://americaagent.city/api/v1/participants/page-change"},"match":{"score":0,"fields":[]}},{"id":"p_z5q6wjwr6beyisyq","slug":"product-recall-check","city_id":"america","address":"https://americaagent.city/participants/product-recall-check","name":"Product Recall Check","aliases":[],"short_description":"Check whether a product matches an official US recall (CPSC, NHTSA, FDA) using deterministic identifier matching and official wording.","description":"Product Recall Check selects the responsible US authority (CPSC for consumer products, NHTSA for vehicles, FDA for food, drugs and medical devices), queries its official API live, and matches brand, model, UPC, lot, serial, VIN or NDC deterministically. Results are recall found, possible match, ambiguous or no match found, with the authority's own wording as evidence. No match does not mean a product is safe. Source outages and unverifiable cases are not charged.","participant_type":"api","categories":[{"slug":"evidence-verification","name":"Evidence & Verification"}],"capabilities":["identifier-matching","product-safety-check","recall-lookup","vin-recall-check"],"use_cases":["check a product for recalls before purchase","look up vehicle recalls by VIN","check a drug NDC against FDA enforcement"],"keywords":["product recall","cpsc","nhtsa","fda","vin","upc","safety","x402"],"languages":["en"],"geographic_scope":[],"interfaces":{"website":"https://product-recall-check.vercel.app/","api":"https://product-recall-check.vercel.app/api/v1/check","docs":"https://product-recall-check.vercel.app/docs","openapi":"https://product-recall-check.vercel.app/openapi.json","llms_txt":"https://product-recall-check.vercel.app/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"0.018 USDC per charged check via x402 on Base; unavailable sources are not charged","url":"https://product-recall-check.vercel.app/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:49.940282+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid endpoint currently fails closed (payments not yet configured), per the live health endpoint. Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:59.135Z","updated_at":"2026-10-02T21:48:49.940Z","links":{"page":"https://americaagent.city/participants/product-recall-check","api":"https://americaagent.city/api/v1/participants/product-recall-check"},"match":{"score":0,"fields":[]}},{"id":"p_z4zexxhpbnhdx6ps","slug":"source-claim-verification","city_id":"america","address":"https://americaagent.city/participants/source-claim-verification","name":"Source Claim Verification","aliases":[],"short_description":"Checks whether one specific source actually supports one specific claim, with verbatim evidence passages and a structured verdict.","description":"Source Claim Verification takes one claim and one source (URL or text) and returns a verdict: supported, contradicted, partially supported, ambiguous, not found in source, source unavailable or unable to verify. It quotes verbatim evidence passages with locations and analyzes subject, quantity, time, location, polarity, qualifiers and attribution. It is a claim-to-source checker, not a general fact-checker. Output language selectable; unavailable sources are not charged.","participant_type":"api","categories":[{"slug":"evidence-verification","name":"Evidence & Verification"}],"capabilities":["citation-verification","claim-source-checking","quote-verification"],"use_cases":["check that a citation supports a statement","detect misattributed or overstated claims","validate sources in generated text"],"keywords":["citation check","source verification","claim","fact check","evidence","multilingual","x402"],"languages":["en","mul"],"geographic_scope":[],"interfaces":{"website":"https://source-claim-verification.vercel.app/","api":"https://source-claim-verification.vercel.app/api/v1/verify","docs":"https://source-claim-verification.vercel.app/docs","openapi":"https://source-claim-verification.vercel.app/openapi.json","llms_txt":"https://source-claim-verification.vercel.app/llms.txt"},"access":{"human":false,"agent":true},"pricing":{"summary":"0.048 USDC per verification via x402 on Base; unavailable sources are not charged","url":"https://source-claim-verification.vercel.app/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:49.072525+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid verification currently fails closed: live health reports configuration unavailable. Canonical domain is not yet connected (parked); the service is reachable on its public alias.","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:56.905Z","updated_at":"2026-10-02T21:48:49.072Z","links":{"page":"https://americaagent.city/participants/source-claim-verification","api":"https://americaagent.city/api/v1/participants/source-claim-verification"},"match":{"score":0,"fields":[]}},{"id":"p_8nqqfw7ihx29m54v","slug":"web-extract","city_id":"america","address":"https://americaagent.city/participants/web-extract","name":"Web Extract","aliases":[],"short_description":"URL plus an extraction request in, structured validated JSON with source evidence out. Pay per request in USDC via x402.","description":"Web Extract fetches one public web page (optionally following up to two same-origin links or rendering JavaScript) and returns structured, validated JSON matching an instruction or JSON schema. Every field carries evidence: source excerpt, original value and retrieval time. Values not found in the source are nulled, never fabricated; numbers, currencies and dates are normalized only when unambiguous. Any language or script; source values are never translated. Logins, CAPTCHAs and paywalls are refused, not bypassed.","participant_type":"api","categories":[{"slug":"data-extraction","name":"Data & Extraction"}],"capabilities":["page-scraping","schema-extraction","structured-data","web-extraction"],"use_cases":["extract product details from a page","turn a listing page into JSON","pull fields matching a schema"],"keywords":["web scraping","extraction","structured data","json","schema","evidence","multilingual","x402"],"languages":["en","mul"],"geographic_scope":[],"interfaces":{"website":"https://webextract.online/","api":"https://webextract.online/api/v1/extract","docs":"https://webextract.online/docs","openapi":"https://webextract.online/openapi.json","llms_txt":"https://webextract.online/llms.txt"},"access":{"human":true,"agent":true},"pricing":{"summary":"From 0.010 USDC (deterministic) and 0.031 USDC (single record) up to 0.255 USDC (50-item list), paid via x402 on Base","url":"https://webextract.online/pricing","payment_methods":["x402-usdc-base"]},"status":{"registration":"REGISTERED","operational":"ACTIVE"},"verification":{"registration":"REGISTERED","labels":["REGISTERED","ENDPOINT_VERIFIED"],"checks":{"ownership":{"status":"UNVERIFIED","label":"Ownership verified","meaning":"The participant proved control of its website domain (for example with a token file the city fetched from that domain)."},"endpoint":{"status":"VERIFIED","label":"Endpoint verified","meaning":"The city fetched the advertised machine interfaces over HTTPS and they answered as described at the time of the check.","method":"https_fetch","verified_at":"2026-10-02T21:48:45.100434+00:00"},"identity":{"status":"UNVERIFIED","label":"Identity verified","meaning":"The city administration checked the identity of the operator behind the participant."},"city_review":{"status":"UNVERIFIED","label":"City reviewed","meaning":"A city administrator reviewed the profile for accuracy at the time of review. Not an endorsement of quality, safety or solvency."}},"statement":"Registered with the city. Completed checks: endpoint verified. Not checked: ownership verified, identity verified, city reviewed.","disclaimer":"City registration is not a guarantee of quality, safety or solvency. Labels describe only the checks listed."},"city_advantage":null,"metadata":{"status_note":"Paid extraction currently fails closed: live health reports configuration unavailable (HTTP 503).","status_note_as_of":"2026-10-02"},"registered_at":"2026-10-02T21:46:48.746Z","updated_at":"2026-10-02T21:48:45.100Z","links":{"page":"https://americaagent.city/participants/web-extract","api":"https://americaagent.city/api/v1/participants/web-extract"},"match":{"score":0,"fields":[]}}]}