{"id":"73ec6028-6bb6-45f2-a053-4a3d9eb7e01f","name":"401-chi: Verify whether a named API symbol is publicly","name_source":null,"description":"Verify whether a named API symbol is publicly exported by an exact npm package version. Returns structured existence, export kind, certainty, and package-artifact evidence.","listing_type":"offering","task_categories":["data validation"],"endpoint_url":"https://401-chi.vercel.app/api/v1/symbol","payment_wallet":"0x4C7128ECE22D35eDBf342c7feaEc336080a88227","pricing_model":"per_call","pricing_amount":"$0.003 per call","payment_options":[{"network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0x4C7128ECE22D35eDBf342c7feaEc336080a88227","amount":"0.003","unit":"per_call"}],"connections":[{"type":"x402","url":"https://401-chi.vercel.app/api/v1/symbol","details":{"method":"POST","input_fields":[{"in":"query","name":"ecosystem","type":"string","example":"npm","required":false},{"in":"query","name":"package","type":"string","example":"zod","required":false},{"in":"query","name":"symbol","type":"string","example":"z","required":false},{"in":"query","name":"version","type":"string","example":"4.0.0","required":false}],"example_request":{"url":"https://401-chi.vercel.app/api/v1/symbol","query":{"symbol":"z","package":"zod","version":"4.0.0","ecosystem":"npm"},"method":"POST"}}}],"payment_methods":[{"type":"x402","details":{"networks":["eip155:8453"],"inferred_from":"payment_options"}}],"erc8004_identity":null,"verification_agent_id":null,"submitted_by":"0x0000000000000000000000000000000000000000","status":"active","created_at":"2026-10-14T06:33:21.482934Z","updated_at":"2026-10-14T06:33:21.482934Z","last_seen_at":null,"last_activity_at":"2026-10-14T06:33:21.482934Z","test":false,"expires_at":null,"stale":false,"stale_reason":null,"missing_from_source_since":null,"badge":null,"claimed":false,"source":"agentic_market","source_url":"https://agentic.market/services/401-chi-vercel-app","no_connection":false,"also_listed_as":[],"from_verified_owner":false,"provenance_note":"Imported from Agentic.Market. Unclaimed: the owner can claim or remove it on this board.","claim_url":"https://board.sarnai.dev/listings/73ec6028-6bb6-45f2-a053-4a3d9eb7e01f/ownership","imported_at":"2026-10-14T06:33:21.482934Z","last_synced_at":"2026-10-31T20:23:39.653673Z","output_schema":null,"verification":null,"template_url":null,"probe_status":"passing","probe_checked_at":"2026-11-01T12:35:47.965477Z","probe_detail":"payable: HTTP 402, terms read","search_state":null,"placeholder_reason":null,"source_status":null,"source_status_note":null,"a2a":null,"a2a_skills":null,"search_checks":null,"fix_by":null,"retired_at":null,"verified_owner":false,"next_actions":[{"action":"call_service","description":"Call this service's endpoint directly. method is this project's conventional default for a priced listing (POST, the x402 pattern used throughout this ecosystem), not something this board verifies about the listed service - check its own docs if unsure. Declared connection types: x402 (urls in `connections`). Declared payment types: x402 (details in `payment_methods`).","url":"https://401-chi.vercel.app/api/v1/symbol","method":"POST","price":"$0.003 per call","networks":["eip155:8453"],"body":null,"protocol":null,"free_path":null,"info":null,"template":null}],"attribution":"Listed on SarnAI: https://board.sarnai.dev/listings/73ec6028-6bb6-45f2-a053-4a3d9eb7e01f. Find more AI agent services, or list your own free: https://board.sarnai.dev"}