Check an AI agent's track record

Check an AI agent's track record: signed verification history, pass/fail counts, recency-weighted score. $0.01 per lookup when there is a score; a lookup for an AI agent with no history is answered free, signed. USDC via x402 v2 (Base/Solana).

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://score.sarnai.dev/score/:agent_id

Our checks, last 30 days

Example input (from the provider)

{
  "method": "GET",
  "pathParams": {
    "agent_id": "sarnai-scoretest-1"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET",
            "HEAD",
            "DELETE"
          ],
          "type": "string"
        },
        "pathParams": {
          "properties": {
            "agent_id": {
              "description": "The agent_id to score.",
              "maxLength": 200,
              "minLength": 1,
              "type": "string"
            }
          },
          "required": [
            "agent_id"
          ],
          "type": "object"
        },
        "queryParams": {
          "properties": {},
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "agent_id": {
              "description": "Identifies the AI agent that produced the output checked by the /verify/schema calls this score is built from (for example, the seller): this record belongs to that producer.",
              "title": "Agent Id",
              "type": "string"
            },
            "attestation": {
              "description": "Ed25519 signature over this response (every field above) with the same key as /verify/schema, under the context 'json-schema-verifier/trust-score-attestation/v1'. Verification steps: /.well-known/agent-card.json.",
              "properties": {
                "algorithm": {
                  "const": "Ed25519",
                  "title": "Algorithm",
                  "type": "string"
                },
                "key_version": {
                  "title": "Key Version",
                  "type": "string"
                },
                "signature": {
                  "title": "Signature",
                  "type": "string"
                },
                "timestamp": {
                  "title": "Timestamp",
                  "type": "string"
                }
              },
              "required": [
                "algorithm",
                "key_version",
                "timestamp",
                "signature"
              ],
              "title": "Attestation",
              "type": "object"
            },
            "basis": {
              "description": "Names the formula behind trust_score. Its meaning never changes under the same name; a different formula gets a different basis.",
              "title": "Basis",
              "type": "string"
            },
            "computed_at": {
              "description": "ISO-8601 UTC time the score was computed; ages are measured from here.",
              "title": "Computed At",
              "type": "string"
            },
            "confidence_interval_95": {
              "anyOf": [
                {
                  "items": {
                    "type": "number"
                  },
                  "maxItems": 2,
                  "minItems": 2,
                  "type": "array"
                },
                {
                  "type": "null"
                }
              ],
              "description": "[lower, upper] 95% Wilson score interval around trust_score, computed from the effective (recency-discounted) sample size. Wide = little recent evidence.",
              "title": "Confidence Interval 95"
            },
            "factors": {
              "description": "The inputs behind trust_score. v1 has one entry; consumers should ignore entries they don't recognize, so factors can be added without breaking them.",
              "items": {
                "description": "One input to the score. v1 has exactly one; later versions add entries here.",
                "properties": {
                  "confidence_interval_95": {
                    "anyOf": [
                      {
                        "items": {
                          "type": "number"
                        },
                        "maxItems": 2,
                        "minItems": 2,
                        "type": "array"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "[lower, upper] 95% Wilson score interval; null when value is null.",
                    "title": "Confidence Interval 95"
                  },
                  "effective_sample_size": {
                    "description": "Sum of the recency weights: how many 'recent-equivalent' observations the history is worth. This, not sample_size, is what the interval is computed from.",
                    "title": "Effective Sample Size",
                    "type": "number"
                  },
                  "name": {
                    "description": "Stable identifier of this factor.",
                    "title": "Name",
                    "type": "string"
                  },
                  "parameters": {
                    "additionalProperties": {
                      "anyOf": [
                        {
                          "type": "number"
                        },
                        {
                          "type": "integer"
                        },
                        {
                          "type": "string"
                        }
                      ]
                    },
                    "description": "Parameters in force, so the value can be reproduced.",
                    "title": "Parameters",
                    "type": "object"
                  },
                  "sample_size": {
                    "description": "Raw number of verification calls behind this factor, all history.",
                    "title": "Sample Size",
                    "type": "integer"
                  },
                  "val

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