{"protocolVersion":"0.2.0","name":"DELTA Witness","url":"https://delta-witness-api.ruphussten.workers.dev","version":"1.4","defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"protocols":["http","a2a","x402"],"pricing":{"unit":"request","amount":1000000,"currency":"USDC","network":"base","note":"Capture is 1 USDC per call; public preflight is 5 USDC per call; guarded-action-pilot is a separate 10 USDC bounded pilot."},"availability":{"now":true,"window_hours":168,"sla":"best-effort"},"contact":{"http":"https://delta-witness-api.ruphussten.workers.dev/v1/preflight","a2a":"https://delta-witness-api.ruphussten.workers.dev/.well-known/agent.json","payment":"https://delta-witness-api.ruphussten.workers.dev/.well-known/x402"},"skills":[{"id":"capture","name":"Capture public page state","description":"Observe a public webpage independently and return timestamped cryptographic proof metadata and hashes.","examples":["Capture the current public page state for https://example.com"]},{"id":"preflight","name":"Preflight verification","description":"Observe a public source and deterministically compare it with supplied expectations or a prior DELTA proof before an autonomous action.","examples":["Verify that https://example.com still contains the expected public statement before acting"]},{"id":"guarded-action-pilot","name":"Guarded Action Pilot","description":"Produce a bounded 1-3 URL evidence package with optional deterministic preflight for higher-value autonomous actions.","examples":["Witness up to three public URLs and run one deterministic preflight condition"]}],"origin":"delta-witness-api.ruphussten.workers.dev","payout_address":"0x1990e21bc219696ff7fbc26527dbaed335ac6367","display_name":"DELTA Witness","description":"Independent public page-state evidence and deterministic preflight verification for consequential agent actions.","payments":{"x402":{"networks":[{"network":"base","asset":"USDC","contract":"0x833589fCD6eDb6E08f4c7C32d4f71b54bdA02913","facilitator":"https://facilitator.payai.network","recipient":"0x1990e21bc219696ff7fbc26527dbaed335ac6367"}]}},"intents":[{"name":"capture_page_state","description":"Observe a public webpage independently and return timestamped cryptographic proof metadata and hashes.","endpoint":"/v1/capture","method":"POST","parameters":{"url":{"type":"string","required":true,"description":"Public HTTP(S) webpage to observe."}},"returns":{"type":"object","description":"DELTA proof reference, content hashes, observation metadata, and public verifier URL."},"price":{"amount":1,"currency":"USDC","model":"per_call","network":"base"}},{"name":"preflight_verification","description":"Independently observe a public source and deterministically compare it with supplied expected content or prior proof state before an agent acts.","endpoint":"/v1/preflight","method":"POST","parameters":{"url":{"type":"string","required":true,"description":"Public HTTP(S) source to observe before an action."},"prior_proof_id":{"type":"string","required":false,"description":"Optional prior DELTA proof UUID used as a hash baseline."},"expected":{"type":"object","required":false,"description":"Optional deterministic contains/excludes or hash expectations."}},"returns":{"type":"object","description":"safe/changed/reason/diff plus a new DELTA proof reference and hashes."},"price":{"amount":5,"currency":"USDC","model":"per_call","network":"base"}},{"name":"guarded_action_pilot","description":"Produce 1-3 independent public page-state witness receipts and optionally one deterministic preflight verdict as a bounded guarded-action evidence package.","endpoint":"/v1/guarded-action-pilot","method":"POST","parameters":{"urls":{"type":"array","required":true,"description":"One to three public HTTPS webpages to witness."},"preflight":{"type":"object","required":false,"description":"Optional deterministic preflight rule applied to one submitted URL."}},"returns":{"type":"object","description":"Evidence bundle with proof URLs, bundle roots, observation timestamps, and optional preflight verdict."},"price":{"amount":10,"currency":"USDC","model":"flat","network":"base"}}]}