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Evidence row 120222

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/kb/openapi-to-mcp
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
c1d4f1829a314f823c1c51e5be308e25eec3fe5ba9342003ee16991385c3c99d
Leaf
0x0f52e9dd235343fb37ab6a91c1e205f8d493db13eb96da27c2f94a2a1be8cda0

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/openapi-to-mcp"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:openapi-to-mcp",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:openapi-to-mcp",
          "name": "USD Coin",
          "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:openapi-to-mcp",
          "name": "USD Coin",
          "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:openapi-to-mcp",
          "reference": "91aN55jGMpHtiUxVavG49FyKcQH4zJepBiYjoXkGb53X",
          "session": "eyJhcnRpY2xlSWQiOiJvcGVuYXBpLXRvLW1jcCIsInJlZmVyZW5jZSI6IjkxYU41NWpHTXBIdGlVeFZhdkc0OUZ5S2NRSDR6SmVwQmlZam9Ya0diNTNYIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI0MzA3MDIwNzF9.NkfPBNZbNxuEPc3gl1Px6mSNwj6q_T8ZAHoB-let_a0"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:openapi-to-mcp",
          "reference": "9Mv6HzvPmJueH6V6GdNg9Frda8ksNNhEzF8bmtwyE8Zz",
          "session": "eyJhcnRpY2xlSWQiOiJvcGVuYXBpLXRvLW1jcCIsInJlZmVyZW5jZSI6IjlNdjZIenZQbUp1ZUg2VjZHZE5nOUZyZGE4a3NOTmhFekY4Ym10d3lFOFp6IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI0MzA3MDIwNzF9.sGk8vBEsVc1AQ4DXxCFL_NXa2bAg2VCLUwseVaQJlTc"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "93232",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:openapi-to-mcp",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "96116",
          "reference": "CGeMAXrUVvDaYjctJ919RdunLo4YQ2A5VTDLZ7JouUxA",
          "session": "eyJhcnRpY2xlSWQiOiJvcGVuYXBpLXRvLW1jcCIsInJlZmVyZW5jZSI6IkNHZU1BWHJVVnZEYVlqY3RKOTE5UmR1bkxvNFlRMkE1VlRETFo3Sm91VXhBIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkzMjMyLCJleHAiOjE3OTI0MzA3MDIwNzJ9.KQuZQ_FJFaaDD71alCxkX2bkLuR3iFQa2bhjUi1F6hs",
          "solUsdPrice": 104.04
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "REST/OpenAPI-to-MCP Adapter Guide. A procedure for converting selected REST/OpenAPI operations into safe MCP tools: choosing which operations to expose (never all of them), designing strict schemas with bounded inputs, keeping credentials and identity out of model-controlled arguments, normalizing errors/pagination, and testing through a real MCP client rather than unit tests alone.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "A procedure for converting selected REST/OpenAPI operations into safe MCP tools: choosing which operations to expose (never all of them), designing strict schemas with bounded inputs, keeping credentials and identity out of model-controlled arguments, normalizing errors/pagination, and testing through a real MCP client rather than unit tests alone.",
              "c": "AI & Agents",
              "id": "openapi-to-mcp",
              "t": "REST/OpenAPI-to-MCP Adapter Guide"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "body": {
                      "description": "Main body text",
                      "type": "string"
                    },
                    "c": {
                      "description": "Category of the guide",
                      "type": "string"
                    },
                    "id": {
                      "description": "Identifier of the record",
                      "type": "string"
                    },
                    "license": {
                      "description": "License identifier",
                      "type": "string"
                    },
                    "price": {
                      "description": "Price",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "t": {
                      "description": "Title of the guide",
                      "type": "string"
                    }
                  },
                  "required": [
                    "id",
                    "t",
                    "c",
                    "body"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-19T17:23:02.131Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-19T17:23:01.902Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/openapi-to-mcp",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "mcp",
      "openapi",
      "api-integration",
      "tool-design",
      "agent-security"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "REST/OpenAPI-to-MCP Adapter Guide. A procedure for converting selected REST/OpenAPI operations into safe MCP tools: choosing which operations to expose (never all of them), designing strict schemas with bounded inputs, keeping credentials and identity out of model-controlled arguments, normalizing errors/pagination, and testing through a real MCP client rather than unit tests alone."
}

What the leaf hashes

{"body":"c1d4f1829a314f823c1c51e5be308e25eec3fe5ba9342003ee16991385c3c99d","id":120222,"kind":"listing","method":"baseline/1","observed_us":1793025617508755,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/openapi-to-mcp","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0x0f52202b3d217ab9ac9ab6aa01c9720747dc8951b0ad6c435829df97b44be479
  2. 0xde81432b086be0473c004d18f8c344a94a3c2a0673d045401a191dc6641c8f26
  3. 0xa09900653be100fe80f6fc946533ffeb712dd8633870a095a81ec5b82fc0cdd8
  4. 0x66f3634aaea95eb7c2261f34b721d7955e3896e97cb8fda400ef74b024141a19
  5. 0xec976cd202a16bdfed6c19887e4584dfa5e331d108e1669dc1a96f2ffe1172cc
  6. 0x4d8e7ba8a475bf25d044910532e96056d224f8a4f8e88ec47a20fca5d3dc83ac
  7. 0x6f05d437ea2c5d1df9b6f8c5ffac4b0ca19639c168e1741bd60c8bef0ea9b111
  8. 0xe575f797880672f501bb64a690a9a064a92554e133dd555bfd45c810c39c0aaa
  9. 0x6e6b252bf8a087bc1a0e21a556170f195e906fd9b7af4c48235dde22211d84e6
  10. 0x7c17524419b776927e27a1512dd0a7873ae1e25d826c73cb4d7489898b9a9a4e
  11. 0xb8387431db70826417a9bc1c445139bee1e0c5d359e4f9e2d85832f49bafe68b
  12. 0x129649b2ec48fbc611fb055c3f5627bda42692beb65d09e853d75bcda4e06239
  13. 0x294f7935f78a896b5f246a7c9a7ee1b023720acdb03fff3cd549c63479848ec9
  14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
  15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
  16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
  17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
  18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON