Agent Evidence API

Name: Agent Evidence API
Price: 0.03 USDC
Availability: InStock

Deploy serverless functions globally in seconds. No cold starts, 330+ cities, infinite concurrency, and pay only for CPU time. Support for JavaScript, TypeScript, Python, and Rust.

SearchLiveeip155:8453Exactvia facilitator:payAI

https://agent-evidence-api.thx93.workers.dev/mcp

Web-evidenceClaim-verificationSource-verification

Settlements · 30d

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.

$0.07

Verified settled volume

4 settlements proven x402 by their on-chain EIP-3009 marker.

$0.030

Listed price

As published in the catalog. Always read the live 402 before paying.

—

Calls · 30d

Upstream's own call count for this endpoint, not ours.

—

Unique payers · 30d

Never called

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x9c0e2B44180439294Fa30Ae2B2a94f8655455FD0

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.03USDC≈ $0.03 USD

on Base · exact scheme

Pay 0.03 USDC on Base to 0x9c0e…55FD0. The signed payment is good for 5 minutes.

Paid to: 0x9c0e…55FD0
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 30000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x9c0e2B44180439294Fa30Ae2B2a94f8655455FD0",
    "amount": "30000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "mcp",
        "example": {
          "urls": [
            "https://company.example/about"
          ],
          "question": "Is Company X a manufacturer of centrifugal pumps?"
        },
        "toolName": "research_evidence",
        "transport": "streamable-http",
        "description": "Claim verification and evidence extraction from public web sources. Fetches the URLs you name, compares your sources, and returns source-grounded web evidence: cited passages that support or contradict your question, each with a citation - source URL, retrieval time, content hash.",
        "inputSchema": {
          "type": "object",
          "required": [
            "question"
          ],
          "properties": {
            "mode": {
              "enum": [
                "evidence"
              ],
              "type": "string"
            },
            "urls": {
              "type": "array",
              "items": {
                "type": "string"
              },
              "maxItems": 25
            },
            "language": {
              "type": "string"
            },
            "question": {
              "type": "string",
              "maxLength": 2000,
              "minLength": 1
            },
            "max_sources": {
              "type": "integer",
              "maximum": 25,
              "minimum": 1
            }
          },
          "additionalProperties": false
        }
      },
      "output": {
        "type": "json",
        "example": {
          "sources": [
            {
              "title": "Company X - About",
              "status": 200,
              "evidence": [
                {
                  "excerpt": "Company X manufactures centrifugal pumps at its facility.",
                  "relevance": "direct"
                }
              ],
              "final_url": "https://company.example/about",
              "retrieved_at": "2026-01-01T00:00:00.000Z",
              "content_hash_sha256": "9f2c…"
            }
          ],
          "assessment": {
            "basis": "1 source matched the question.",
            "status": "supported"
          },
          "limitations": [
            "Assessment uses deterministic lexical matching, not semantic reasoning."
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "toolName",
            "inputSchema"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "mcp"
            },
            "example": {
              "type": "object"
            },
            "toolName": {
              "type": "string"
            },
            "transport": {
              "enum": [
                "streamable-http"
              ],
              "type": "string"
            },
            "description": {
              "type": "string"
            },
            "inputSchema": {
              "type": "object"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-09-21 11:11Z
Last indexed by Roundhouse: 2026-09-24 01:15Z
Last enriched (probe, favicon, geo): 2026-09-21 14:15Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 406

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service Agent Evidence API and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Agent%20Evidence%20API'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://agent-evidence-api.thx93.workers.dev/mcp, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.