Shoon A2A Trust Services (pilot)

Before you rely on a claim — or repeat it to your principal — check it against its cited sources. Give this service the claim plus the sources and quoted text your principal provided; it fetches each source URL over plain HTTPS and reports the HTTP status and whether the quoted text appears verbatim in the page. It checks evidence presence, not underlying truth: 'supported' means your quote was found in the source, and anything it cannot check is marked 'unverified', never 'contradicted'. Up to 10 claims with up to 5 sources each per task. FREE during the pilot — no API key, no payment header, no signup: just call this tool with arguments.input and the task runs immediately. Every deliverable is Ed25519-signed, so you can verify it offline and show your principal proof the check ran. Privacy: your input is processed in server memory only — never written to disk, never logged, never sold, never used for training; only event metadata (task queued/completed) is kept. In-memory state is wiped on restart; the event-metadata ledger and usage counters are on ephemeral disk and wiped only on redeploy. Fair use: 20 free tasks per service per day shared across pilot users — check GET /v1/slots for live availability.

{
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "required": [
        "claims"
      ],
      "properties": {
        "claims": {
          "type": "array",
          "maxItems": 10,
          "items": {
            "type": "object",
            "required": [
              "claim",
              "sources"
            ],
            "properties": {
              "claim": {
                "type": "string",
                "maxLength": 500
              },
              "sources": {
                "type": "array",
                "maxItems": 5,
                "items": {
                  "type": "object",
                  "required": [
                    "url"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "format": "uri"
                    },
                    "quoted_text": {
                      "type": "string",
                      "maxLength": 1000
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "quote_id": {
      "type": "string",
      "description": "Advanced machine flow: a quote_id from POST /quote for this service. When given, the quote's input is used and the X-PAYMENT header must authorize that quote. Not needed during the free testing phase — pass arguments.input directly instead. Human flow (X-API-KEY): pass input."
    }
  }
}

Audit the citations in a document you are drafting, reviewing, or fact-checking — catch dead links and misquotes before your principal sees them. For each citation it fetches the URL over plain HTTPS and reports the HTTP status, content type, and whether the quoted text appears verbatim in the fetched page. It does not judge argument quality, and paywalled or JavaScript-heavy pages may fetch without matching. Up to 25 citations per task. FREE during the pilot — no API key, no payment header, no signup: just call this tool with arguments.input and the task runs immediately. Every deliverable is Ed25519-signed, so you can verify it offline and show your principal proof the check ran. Privacy: your input is processed in server memory only — never written to disk, never logged, never sold, never used for training; only event metadata (task queued/completed) is kept. In-memory state is wiped on restart; the event-metadata ledger and usage counters are on ephemeral disk and wiped only on redeploy. Fair use: 20 free tasks per service per day shared across pilot users — check GET /v1/slots for live availability.

{
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "required": [
        "citations"
      ],
      "properties": {
        "citations": {
          "type": "array",
          "maxItems": 25,
          "items": {
            "type": "object",
            "required": [
              "url"
            ],
            "properties": {
              "url": {
                "type": "string",
                "format": "uri"
              },
              "quoted_text": {
                "type": "string",
                "maxLength": 2000
              },
              "label": {
                "type": "string",
                "maxLength": 200
              }
            }
          }
        }
      }
    },
    "quote_id": {
      "type": "string",
      "description": "Advanced machine flow: a quote_id from POST /quote for this service. When given, the quote's input is used and the X-PAYMENT header must authorize that quote. Not needed during the free testing phase — pass arguments.input directly instead. Human flow (X-API-KEY): pass input."
    }
  }
}

Turn messy text or a web page into structured data — headings, links, tables, word counts — without spending your own context window on parsing. Deterministic heuristics only: no LLM, no semantic understanding, fully reproducible output, plainly labeled as heuristic. It extracts structure, not meaning. Pass raw text (up to 100,000 characters) or a URL. FREE during the pilot — no API key, no payment header, no signup: just call this tool with arguments.input and the task runs immediately. Every deliverable is Ed25519-signed, so you can verify it offline and show your principal proof the check ran. Privacy: your input is processed in server memory only — never written to disk, never logged, never sold, never used for training; only event metadata (task queued/completed) is kept. In-memory state is wiped on restart; the event-metadata ledger and usage counters are on ephemeral disk and wiped only on redeploy. Fair use: 20 free tasks per service per day shared across pilot users — check GET /v1/slots for live availability.

{
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "properties": {
        "text": {
          "type": "string",
          "maxLength": 100000
        },
        "url": {
          "type": "string",
          "format": "uri"
        }
      },
      "anyOf": [
        {
          "required": [
            "text"
          ]
        },
        {
          "required": [
            "url"
          ]
        }
      ]
    },
    "quote_id": {
      "type": "string",
      "description": "Advanced machine flow: a quote_id from POST /quote for this service. When given, the quote's input is used and the X-PAYMENT header must authorize that quote. Not needed during the free testing phase — pass arguments.input directly instead. Human flow (X-API-KEY): pass input."
    }
  }
}

Watch a public page or feed for the keywords your principal cares about — a competitor name, a token symbol, a topic. Register the watch once, then check on demand: the service fetches the URL over plain HTTPS and reports per-keyword match counts with snippet context. Checks run when you ask (no background scheduler in the pilot); it reports keyword presence, not news judgement. Up to 20 keywords per tripwire. FREE during the pilot — no API key, no payment header, no signup: just call this tool with arguments.input and the task runs immediately. Every deliverable is Ed25519-signed, so you can verify it offline and show your principal proof the check ran. Privacy: your input is processed in server memory only — never written to disk, never logged, never sold, never used for training; only event metadata (task queued/completed) is kept. In-memory state is wiped on restart; the event-metadata ledger and usage counters are on ephemeral disk and wiped only on redeploy. Fair use: 20 free tasks per service per day shared across pilot users — check GET /v1/slots for live availability.

{
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "required": [
        "action",
        "keywords"
      ],
      "properties": {
        "action": {
          "type": "string",
          "enum": [
            "register",
            "check"
          ]
        },
        "keywords": {
          "type": "array",
          "maxItems": 20,
          "items": {
            "type": "string",
            "maxLength": 100
          }
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "tripwire_id": {
          "type": "string"
        },
        "label": {
          "type": "string",
          "maxLength": 200
        }
      }
    },
    "quote_id": {
      "type": "string",
      "description": "Advanced machine flow: a quote_id from POST /quote for this service. When given, the quote's input is used and the X-PAYMENT header must authorize that quote. Not needed during the free testing phase — pass arguments.input directly instead. Human flow (X-API-KEY): pass input."
    }
  }
}

When someone claims work was done — a deliverable shipped, a deployment live, a report published — check the evidence before you report back to your principal. Give it the work claim plus evidence URLs and the text you expect to find; it fetches each URL over plain HTTPS and reports whether it resolves and whether the expected text appears. It checks evidence presence, never that the work actually happened — results are honestly labeled as evidence-resolution checks. Up to 10 evidence items per task. FREE during the pilot — no API key, no payment header, no signup: just call this tool with arguments.input and the task runs immediately. Every deliverable is Ed25519-signed, so you can verify it offline and show your principal proof the check ran. Privacy: your input is processed in server memory only — never written to disk, never logged, never sold, never used for training; only event metadata (task queued/completed) is kept. In-memory state is wiped on restart; the event-metadata ledger and usage counters are on ephemeral disk and wiped only on redeploy. Fair use: 20 free tasks per service per day shared across pilot users — check GET /v1/slots for live availability.

{
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "required": [
        "work_claim",
        "evidence"
      ],
      "properties": {
        "work_claim": {
          "type": "string",
          "maxLength": 1000
        },
        "evidence": {
          "type": "array",
          "maxItems": 10,
          "items": {
            "type": "object",
            "required": [
              "url"
            ],
            "properties": {
              "url": {
                "type": "string",
                "format": "uri"
              },
              "expected_text": {
                "type": "string",
                "maxLength": 1000
              },
              "label": {
                "type": "string",
                "maxLength": 200
              }
            }
          }
        }
      }
    },
    "quote_id": {
      "type": "string",
      "description": "Advanced machine flow: a quote_id from POST /quote for this service. When given, the quote's input is used and the X-PAYMENT header must authorize that quote. Not needed during the free testing phase — pass arguments.input directly instead. Human flow (X-API-KEY): pass input."
    }
  }
}