{"id":11886,"name":"Pre-sign security verdict for autonomous agents","description":"Pre-sign security verdict for autonomous agents: before an agent SIGNS and settles a transaction, get an allow/warn/block verdict with reasons. Decodes the calldata to catch UNLIMITED approvals (spender can drain the token without further signatures), and cross-checks the token (honeypot, mintable, pausable, hidden owner, blacklist, buy/sell tax via GoPlus) and the spender/recipient (phishing, blacklist, sanctions via GoPlus address-security + Chainalysis + TRM). Use it as a last-mile guard before approving a token or signing a tx. Ed25519-signed provenance. 0.015 USDC on Base. POST {\"chain\":\"base\",\"to\":\"0x..\",\"data\":\"0x..\"} to verify a tx before signing, or {\"chain\":\"base\",\"token\":\"0x..\"} to verify a token before approving.","card_url":"https://presign.hergertsynthora.com/.well-known/agent-card.json","endpoint":"https://presign.hergertsynthora.com/service","protocol_version":"0.3.0","first_seen":"2026-10-10T13:30:22.999655+00:00","last_verified":"2026-10-10T16:22:34.412933+00:00","card":{"mcp":{"endpoint":"https://presign.hergertsynthora.com/mcp","transport":"http-jsonrpc"},"url":"https://presign.hergertsynthora.com/service","name":"Pre-sign security verdict for autonomous agents","x402":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","payTo":"0x6D9F318463168fF637b50E5b9a21392e97c7c167","amount":"15000","network":"eip155:8453","resource":"https://presign.hergertsynthora.com/service"},"skills":[{"id":"presign","name":"presign","tags":["presign","x402","synthora","m2m","a2a"],"examples":["{\"chain\": \"base\", \"to\": \"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\", \"data\": \"0x095ea7b30000000000000000000000001111111111111111111111111111111111111111ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff\"}"],"inputModes":["application/json"],"description":"Pre-sign security verdict for autonomous agents: before an agent SIGNS and settles a transaction, get an allow/warn/block verdict with reasons. Decodes the calldata to catch UNLIMITED approvals (spender can drain the token without further signatures), and cross-checks the token (honeypot, mintable, pausable, hidden owner, blacklist, buy/sell tax via GoPlus) and the spender/recipient (phishing, blacklist, sanctions via GoPlus address-security + Chainalysis + TRM). Use it as a last-mile guard before approving a token or signing a tx. Ed25519-signed provenance. 0.015 USDC on Base. POST {\"chain\":\"base\",\"to\":\"0x..\",\"data\":\"0x..\"} to verify a tx before signing, or {\"chain\":\"base\",\"token\":\"0x..\"} to verify a token before approving.","inputSchema":{"type":"object","properties":{"to":{"type":"string","description":"Target contract of the tx to be signed (0x...); for approve/transfer this is the token being approved/moved"},"data":{"type":"string","description":"Raw calldata (0x...) of the tx to be signed — decoded to detect unlimited approvals and the spender/recipient"},"chain":{"enum":["base","ethereum"],"type":"string","description":"Chain (default base)"},"token":{"type":"string","description":"Token contract to verify before approving (0x...); use instead of to/data when you only want a token check"}}},"outputModes":["application/json"]}],"version":"1.0.0","provider":{"url":"https://hergertsynthora.com","organization":"SYNTHORA"},"security":[{"x402":[]}],"description":"Pre-sign security verdict for autonomous agents: before an agent SIGNS and settles a transaction, get an allow/warn/block verdict with reasons. Decodes the calldata to catch UNLIMITED approvals (spender can drain the token without further signatures), and cross-checks the token (honeypot, mintable, pausable, hidden owner, blacklist, buy/sell tax via GoPlus) and the spender/recipient (phishing, blacklist, sanctions via GoPlus address-security + Chainalysis + TRM). Use it as a last-mile guard before approving a token or signing a tx. Ed25519-signed provenance. 0.015 USDC on Base. POST {\"chain\":\"base\",\"to\":\"0x..\",\"data\":\"0x..\"} to verify a tx before signing, or {\"chain\":\"base\",\"token\":\"0x..\"} to verify a token before approving.","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"protocolVersion":"0.3.0","securitySchemes":{"x402":{"type":"http","scheme":"x402","description":"HTTP 402 micropayment. 15000 atomic USDC on eip155:8453."}},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"preferredTransport":"HTTP+JSON","additionalInterfaces":[{"url":"https://presign.hergertsynthora.com/service","transport":"HTTP+JSON"},{"url":"https://presign.hergertsynthora.com/a2a","transport":"JSONRPC"}]},"signature_status":"unsigned","signature_detail":"No card signature supplied","signature_key_url":null,"signature_checked_at":"2026-10-10T16:22:34.412933+00:00","domain_claimed_at":null,"domain_proof_checked_at":null,"source_name":"Agent Tools Catalog","source_url":"https://agent-tools.cloud","last_check":{"checked_at":"2026-10-10T16:22:34.412933+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"also_published_at":[],"history_urls":["https://presign.hergertsynthora.com/.well-known/agent-card.json"],"skills":[{"skill_id":"presign","name":"presign","description":"Pre-sign security verdict for autonomous agents: before an agent SIGNS and settles a transaction, get an allow/warn/block verdict with reasons. Decodes the calldata to catch UNLIMITED approvals (spender can drain the token without further signatures), and cross-checks the token (honeypot, mintable, pausable, hidden owner, blacklist, buy/sell tax via GoPlus) and the spender/recipient (phishing, blacklist, sanctions via GoPlus address-security + Chainalysis + TRM). Use it as a last-mile guard before approving a token or signing a tx. Ed25519-signed provenance. 0.015 USDC on Base. POST {\"chain\":\"base\",\"to\":\"0x..\",\"data\":\"0x..\"} to verify a tx before signing, or {\"chain\":\"base\",\"token\":\"0x..\"} to verify a token before approving.","tags":["presign","x402","synthora","m2m","a2a"],"quality_warning":false}],"quality_flags":["bulk_publisher"],"check_history":{"checks":2,"passed":2},"recent_checks":[{"card_url":"https://presign.hergertsynthora.com/.well-known/agent-card.json","checked_at":"2026-10-10T16:22:34.412933+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},{"card_url":"https://presign.hergertsynthora.com/.well-known/agent-card.json","checked_at":"2026-10-10T13:30:22.999655+00:00","success":true,"http_status":200,"detail":"Agent Card validated"}],"endpoint_tls_check":{"checked_at":"2026-10-10T16:22:34.412933+00:00","success":true,"detail":"Valid TLS connection to advertised endpoint host; no A2A request sent"},"protocol_check":{"checked_at":"2026-10-10T13:30:22.999655+00:00","state":"unconfirmed","http_status":503,"detail":"Endpoint did not return an A2A task-not-found response"},"events":[],"relationships":[],"verification":{"agent_card_url":"https://presign.hergertsynthora.com/.well-known/agent-card.json","last_successful_card_check":"2026-10-10T16:22:34.412933+00:00","latest_card_check":{"checked_at":"2026-10-10T16:22:34.412933+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"signature_status":"unsigned","signature_checked_at":"2026-10-10T16:22:34.412933+00:00","task_endpoint_tested":true,"task_execution_tested":false,"endpoint_tls_checked_at":"2026-10-10T16:22:34.412933+00:00","endpoint_tls_reachable":true,"protocol_check_state":"unconfirmed","protocol_checked_at":"2026-10-10T13:30:22.999655+00:00","provider_identity_verified":false,"domain_claimed_at":null,"domain_proof_checked_at":null}}