CSOAI Free Door

CSOAI free door: the live GSPC board totals and the public signed root, at a price of zero because it is free forever. That is the real price, not a promotion — a grade is never sold. Paid artefacts are catalogued at https://councilof.ai/api/x402. Measurement, not certification.

TradingLiveeip155:8453Exactvia facilitator:payAI

https://councilof.ai/api/free-door

Settlements · 30d

45↑ 44%

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

$0.39

Verified settled volume

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

$0.00

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

0x212686404A7D1E1fD88F35eD6200c3aF7A78ae31

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.

{
  "csoai": {
    "deliverable": "the Bazaar door itself: this resource is free and settles for zero. It exists so an index can discover the rail; it sells nothing and a settlement here buys nothing.",
    "free_preview": "https://councilof.ai/api/free-door",
    "offer_receipt": {
      "alg": "EdDSA",
      "kid": "did:web:csoai.org#board-attestation-1",
      "spec": "https://github.com/x402-foundation/x402/blob/69652a69798f0b08f95bef33318896e36e210f7e/specs/extensions/extension-offer-and-receipt.md",
      "format": "jws",
      "reason": "1 of 1 accepts entries signed",
      "signed": true,
      "verify": "base64url-decode the JWS payload part, fetch https://csoai.org/.well-known/did.json, take the publicKeyJwk.x of the verificationMethod whose id equals the header kid, and verify Ed25519 over `header.payload`. POST the compact string to /api/receipts/verify to have us do it, or run scripts/verify_receipt.py to do it without us.",
      "extension": "offer-receipt",
      "spec_commit": "69652a69798f0b08f95bef33318896e36e210f7e"
    }
  },
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "symbol": "USDC",
        "version": "2",
        "decimals": 6
      },
      "payTo": "0x212686404A7D1E1fD88F35eD6200c3aF7A78ae31",
      "amount": "0",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://councilof.ai/api/free-door",
      "description": "CSOAI free door: the live GSPC board totals and the public signed root, at a price of zero because it is free forever. That is the real price, not a promotion — a grade is never sold. Paid artefacts are catalogued at https://councilof.ai/api/x402. Measurement, not certification.",
      "csoai_pricing": {
        "tier": "per_request",
        "sku_id": "request_attestation",
        "product_id": "csoai.product.request_attestation",
        "campaign_id": null,
        "pricing_basis": "STANDARD",
        "normal_amount_atomic": "0",
        "offered_amount_atomic": "0",
        "fresh_compute_excluded": true
      },
      "maxAmountRequired": "0",
      "maxTimeoutSeconds": 300
    }
  ],
  "catalog": "https://councilof.ai/api/x402",
  "resource": {
    "url": "https://councilof.ai/api/free-door",
    "mimeType": "application/json",
    "description": "CSOAI free door: the live GSPC board totals and the public signed root, at a price of zero because it is free forever. That is the real price, not a promotion — a grade is never sold. Paid artefacts are catalogued at https://councilof.ai/api/x402. Measurement, not certification.",
    "serviceName": "CSOAI Free Door"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "root": "https://councilof.ai/root.json",
            "board": "https://councilof.ai/api/gspc",
            "schema": "csoai.free-door/0.1",
            "verify": "https://councilof.ai/gspc-verify",
            "price_usdc": 0
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              }
            }
          }
        }
      }
    },
    "offer-receipt": {
      "info": {
        "offers": [
          {
            "format": "jws",
            "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6Y3NvYWkub3JnI2JvYXJkLWF0dGVzdGF0aW9uLTEifQ.eyJhbW91bnQiOiIwIiwiYXNzZXQiOiIweDgzMzU4OWZDRDZlRGI2RTA4ZjRjN0MzMkQ0ZjcxYjU0YmRBMDI5MTMiLCJuZXR3b3JrIjoiZWlwMTU1Ojg0NTMiLCJwYXlUbyI6IjB4MjEyNjg2NDA0QTdEMUUxZkQ4OEYzNWVENjIwMGMzYUY3QTc4YWUzMSIsInJlc291cmNlVXJsIjoiaHR0cHM6Ly9jb3VuY2lsb2YuYWkvYXBpL2ZyZWUtZG9vciIsInNjaGVtZSI6ImV4YWN0IiwidmFsaWRVbnRpbCI6MTc4OTQxMjQ3MywidmVyc2lvbiI6MX0.WZqXYM0PYy-Bbs2ijp88TEjsDHX3O6_h5uspr9i-eqiuE2BDNDRuPJcXoRYfhGgl7mM5cmwojhXWLwayUtsoBw",
            "acceptIndex": 0
          }
        ]
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "offers"
        ],
        "properties": {
          "offers": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "format",
                "signature"
              ],
              "properties": {
                "format": {
                  "type": "string",
                  "const": "jws"
                },
                "signature": {
                  "type": "string",
                  "description": "JWS compact serialization containing the offer payload"
                },
                "acceptIndex": {
                  "type": "integer"
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

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

0USDC≈ $0 USD

on Base · exact scheme

Pay 0 USDC on Base to 0x2126…8ae31. The signed payment is good for 5 minutes.

Paid to: 0x2126…8ae31
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 0 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x212686404A7D1E1fD88F35eD6200c3aF7A78ae31",
    "amount": "0",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET"
      },
      "output": {
        "type": "json",
        "example": {
          "root": "https://councilof.ai/root.json",
          "board": "https://councilof.ai/api/gspc",
          "schema": "csoai.free-door/0.1",
          "verify": "https://councilof.ai/gspc-verify",
          "price_usdc": 0
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-09-24 13:01Z
Last indexed by Roundhouse: 2026-09-24 15:45Z
Last enriched (probe, favicon, geo): 2026-09-14 18:46Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 402

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 CSOAI Free Door 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=CSOAI%20Free%20Door'
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://councilof.ai/api/free-door, 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.