Roundhouse AI

Synergy

EXO Foundation is a neutral body maintaining open infrastructure that lets AI agents establish reputation, pay for services, and attribute their journeys — portable across platforms, verifiable by anyone, without identity silos.

Searchoffline · HTTP 530eip155:8453Exactvia cdp
https://api.exo-trust.com/execute/cve_brief
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far.
$5.87
Verified settled volume
20 settlements proven x402 by their on-chain EIP-3009 marker.
$1.00
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-08 04:21Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xC9e2A96d0C9D5B1e0656862dFEf849C95B8aFA4C

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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "payment_required",
  "message": "Send an x402 payment (PAYMENT-SIGNATURE header) to execute this task.",
  "network": "eip155:8453",
  "service": "Synergy",
  "currency": "USDC",
  "recipient": "0xC9e2A96d0C9D5B1e0656862dFEf849C95B8aFA4C",
  "price_usdc": 1,
  "description": "Vulnerability risk brief: exact CVE id (or product-name search over the NVD keyword index). Attested NVD 2.0 record (description, CVSS v2/v3.x/v4.0 metrics, CWE weaknesses, vulnerable CPE surface, references) + CISA KEV catalog status + FIRST EPSS score/percentile, then a machine-formatted risk brief from those attested facts only. Keyless public sources (NVD/CISA/FIRST); $1.00 (moat product #4)."
}

Accepts

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

1USDC≈ $1 USD
on Base · exact scheme

Pay 1 USDC on Base to 0xC9e2…aFA4C. The signed payment is good for 10 minutes.

Paid to
0xC9e2…aFA4C
USD Coin contract
0x8335…02913
Payment window
10 minutes
As published
1000000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xC9e2A96d0C9D5B1e0656862dFEf849C95B8aFA4C",
    "amount": "1000000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "cve": "example",
          "product": "example"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "result": {
            "found": true,
            "notes": [
              "example"
            ],
            "query": {},
            "record": {},
            "source": "en",
            "derived": {},
            "matches": [
              "example"
            ],
            "analysis": {},
            "provenance": {},
            "disclaimers": [
              "example"
            ],
            "analyst_note": "example",
            "exploitation": {}
          },
          "status": "completed",
          "receipt": {
            "amount": 1,
            "method": "x402",
            "settled": true,
            "currency": "USDC"
          },
          "task_id": "00000000-0000-0000-0000-000000000000"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "properties": {
                "cve": {
                  "type": "string",
                  "description": "CVE id, e.g. CVE-2021-44228 (CVE-YYYY-NNNN)."
                },
                "product": {
                  "type": "string",
                  "description": "Vendor/product name search over the NVD keyword index, e.g. log4j — surfaces the most recently published matches; use 'cve' for the full risk brief."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "format": "eip712",
          "payload": {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payTo": "0xC9e2A96d0C9D5B1e0656862dFEf849C95B8aFA4C",
            "amount": "1000000",
            "scheme": "exact",
            "network": "eip155:8453",
            "version": 1,
            "validUntil": 1788841613,
            "resourceUrl": "https://api.exo-trust.com/execute/cve_brief"
          },
          "signature": "0xac0ae3cd7a26f6fd124183b81bc0742ad189b0a7a7f52dada8e4958dc6b141f33fdafd1535950fc35eb5f04723ec9a9a2b75d5cc51a855ddb7347acd85cfc4511c",
          "acceptIndex": 0
        }
      ]
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "offers"
      ],
      "properties": {
        "offers": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "format",
              "payload",
              "signature"
            ],
            "properties": {
              "format": {
                "type": "string",
                "const": "eip712"
              },
              "payload": {
                "type": "object",
                "required": [
                  "version",
                  "resourceUrl",
                  "scheme",
                  "network",
                  "asset",
                  "payTo",
                  "amount"
                ],
                "properties": {
                  "asset": {
                    "type": "string"
                  },
                  "payTo": {
                    "type": "string"
                  },
                  "amount": {
                    "type": "string"
                  },
                  "scheme": {
                    "type": "string"
                  },
                  "network": {
                    "type": "string"
                  },
                  "version": {
                    "type": "integer"
                  },
                  "validUntil": {
                    "type": "integer"
                  },
                  "resourceUrl": {
                    "type": "string"
                  }
                }
              },
              "signature": {
                "type": "string"
              },
              "acceptIndex": {
                "type": "integer"
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-08 04:21Z
Last indexed by Roundhouse
2026-09-10 12:50Z
Last enriched (probe, favicon, geo)
2026-09-22 00:45Z
x402 version
2
Max timeout
600s
Liveness probe
HTTP 530
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far. 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 Synergy 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=Synergy'
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://api.exo-trust.com/execute/cve_brief, 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.