{"id":552870,"name":"SiteCheck Crypto & Finance tool finder","description":"Finds the right one of the 174 pay-per-call SiteCheck Crypto & Finance tools on this host for a task described in plain words, and says how to call it: URL, method, price in USDC and how to pay with x402. Free; it runs no tool itself. The tools are called over HTTP (x402) or MCP at https://api.chainmarket-api.workers.dev/mcp.","card_url":"https://api.chainmarket-api.workers.dev/.well-known/agent-card.json","endpoint":"https://api.chainmarket-api.workers.dev/a2a","protocol_version":"0.3.0","first_seen":"2026-11-05T22:07:33.598124+00:00","last_verified":"2026-11-05T22:07:33.598124+00:00","card":{"url":"https://api.chainmarket-api.workers.dev/a2a","name":"SiteCheck Crypto & Finance tool finder","skills":[{"id":"find-tool","name":"Find a tool","tags":["x402","tools","discovery","pay-per-call","mcp"],"examples":["validate an IBAN","check a company in the UK register","bitcoin mempool fees"],"inputModes":["text/plain"],"description":"Describe what you need (for example \"validate an IBAN\" or \"latest SEC filings for a company\"); the answer lists the matching SiteCheck Crypto & Finance tools with URL, method, price and the x402 payment steps.","outputModes":["text/plain","application/json"]}],"version":"1.0.0","provider":{"url":"https://api.sitecheck-api.workers.dev/","organization":"SiteCheck"},"description":"Finds the right one of the 174 pay-per-call SiteCheck Crypto & Finance tools on this host for a task described in plain words, and says how to call it: URL, method, price in USDC and how to pay with x402. Free; it runs no tool itself. The tools are called over HTTP (x402) or MCP at https://api.chainmarket-api.workers.dev/mcp.","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"protocolVersion":"0.3.0","documentationUrl":"https://api.chainmarket-api.workers.dev/llms.txt","defaultInputModes":["text/plain"],"defaultOutputModes":["text/plain","application/json"],"preferredTransport":"JSONRPC"},"status":"verified","publisher_domain":"chainmarket-api.workers.dev","signature_status":"unsigned","signature_detail":"No card signature supplied","signature_key_url":null,"signature_checked_at":"2026-11-05T22:07:33.598124+00:00","domain_claimed_at":null,"domain_proof_checked_at":null,"source_name":"Publisher Agent Card","source_url":"https://api.chainmarket-api.workers.dev/.well-known/agent-card.json","last_check":{"checked_at":"2026-11-05T22:07:33.598124+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"also_published_at":[],"history_urls":["https://api.chainmarket-api.workers.dev/.well-known/agent-card.json"],"skills":[{"skill_id":"find-tool","name":"Find a tool","description":"Describe what you need (for example \"validate an IBAN\" or \"latest SEC filings for a company\"); the answer lists the matching SiteCheck Crypto & Finance tools with URL, method, price and the x402 payment steps.","tags":["x402","tools","discovery","pay-per-call","mcp"],"quality_warning":false}],"quality_flags":[],"check_history":{"checks":1,"passed":1},"recent_checks":[{"card_url":"https://api.chainmarket-api.workers.dev/.well-known/agent-card.json","checked_at":"2026-11-05T22:07:33.598124+00:00","success":true,"http_status":200,"detail":"Agent Card validated"}],"endpoint_tls_check":{"checked_at":"2026-11-05T22:07:33.598124+00:00","success":true,"detail":"Valid TLS connection to advertised endpoint host; no A2A request sent"},"protocol_check":{"checked_at":"2026-11-05T22:07:33.598124+00:00","endpoint":"https://api.chainmarket-api.workers.dev/a2a","protocol_binding":"JSONRPC","protocol_version":"0.3.0","state":"jsonrpc_no_task_lookup","http_status":200,"detail":"Endpoint answered JSON-RPC, but neither tasks/get (A2A 0.3) nor GetTask (A2A 1.0) is available. Listing does not require task lookup; implement the method matching your advertised version to confirm A2A","request_diagnostics":{"requests":[{"path":"/a2a","allow":[],"method":"POST","status":200,"version_header":"0.3","protocol_method":"tasks/get","redirect_followed":false},{"path":"/a2a","allow":[],"method":"POST","status":200,"version_header":"1.0","protocol_method":"GetTask","redirect_followed":false}],"capture_version":1}},"declared_primary_endpoint":"https://api.chainmarket-api.workers.dev/a2a","selected_connection_interface":{"url":"https://api.chainmarket-api.workers.dev/a2a","protocolBinding":"JSONRPC","protocolVersion":"0.3.0"},"protocol_interface_checks":[{"endpoint":"https://api.chainmarket-api.workers.dev/a2a","protocol_binding":"JSONRPC","protocol_version":"0.3.0","selected":true,"state":"jsonrpc_no_task_lookup","checked_at":"2026-11-05T22:07:33.598124+00:00","http_status":200,"detail":"Endpoint answered JSON-RPC, but neither tasks/get (A2A 0.3) nor GetTask (A2A 1.0) is available. Listing does not require task lookup; implement the method matching your advertised version to confirm A2A","binding_recorded":true}],"connection_selection_note":"The selected connection uses an address advertised in the publisher card. Read-only observations do not establish task quality or safety.","x402_price_check":null,"events":[],"relationships":[],"verification":{"agent_card_url":"https://api.chainmarket-api.workers.dev/.well-known/agent-card.json","last_successful_card_check":"2026-11-05T22:07:33.598124+00:00","latest_card_check":{"checked_at":"2026-11-05T22:07:33.598124+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"signature_status":"unsigned","signature_checked_at":"2026-11-05T22:07:33.598124+00:00","task_endpoint_tested":true,"task_execution_tested":false,"endpoint_tls_checked_at":"2026-11-05T22:07:33.598124+00:00","endpoint_tls_reachable":true,"protocol_check_state":"jsonrpc_no_task_lookup","protocol_checked_at":"2026-11-05T22:07:33.598124+00:00","provider_identity_verified":false,"domain_claimed_at":null,"domain_proof_checked_at":null},"synthetic_capability_tests":{"agent_id":552870,"status":"not_tested","reason_code":"not_yet_tested","consent_status":"not_confirmed","latest_observation_status":null,"last_checked_at":null,"fixture_version":"1","reference_demonstration":false,"scope":"A publisher-authorized synthetic test of a dedicated free test endpoint. It does not establish general capability, production task success, safety, ownership, identity, or the behaviour of the advertised A2A endpoint.","methodology_url":"https://localmark.ai/capability-tests","history":[]},"repair_links":{"agent_repair_url":"https://localmark.ai/agents/552870/repair","publisher_report_url":"https://localmark.ai/publishers/chainmarket-api.workers.dev/repair","diagnostics_json_url":"https://localmark.ai/publishers/chainmarket-api.workers.dev/repair/diagnostics.json","diagnostics_csv_url":"https://localmark.ai/publishers/chainmarket-api.workers.dev/repair/diagnostics.csv"},"_localmark":{"contribution":{"optional":true,"directory_access":"free","operator_authorization_required":true,"affects_rankings":false,"message":"LocalMark is free. Optional contributions help fund ongoing checks.","support_url":"https://localmark.ai/support","metadata_url":"https://localmark.ai/api/v1/support/contributions"}}}