Evidence row 120179

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://saylorinnovations.com/api/kb/llm-structured-output-failures
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: b1287953e0f146eb6e88b77b4c00a897d42a17b6171b1c62b1bcd3ccffe0da13
Leaf: 0x5d5eb4ac4311137e1f914dafd287c3282883322a22a4c62bfd015201a7c2ce70

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/llm-structured-output-failures"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:llm-structured-output-fai",
          "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:llm-structured-output-fai",
          "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:llm-structured-output-fai",
          "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:llm-structured-output-fai",
          "reference": "2M38AKwtoqGUBG8dACme9NqEzmaHUwWn6E63c3tyaxR4",
          "session": "eyJhcnRpY2xlSWQiOiJsbG0tc3RydWN0dXJlZC1vdXRwdXQtZmFpbHVyZXMiLCJyZWZlcmVuY2UiOiIyTTM4QUt3dG9xR1VCRzhkQUNtZTlOcUV6bWFIVXdXbjZFNjNjM3R5YXhSNCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyODM5OTI4ODYxfQ.TAevKQMz3jBgOaiYqN4cmI-EvxuS5CUc9QpQpvLOKUA"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:llm-structured-output-fai",
          "reference": "DgGpe4rcBWFXf4vnhc1KYiKmCUgQZPBAezJKmS3GGD2P",
          "session": "eyJhcnRpY2xlSWQiOiJsbG0tc3RydWN0dXJlZC1vdXRwdXQtZmFpbHVyZXMiLCJyZWZlcmVuY2UiOiJEZ0dwZTRyY0JXRlhmNHZuaGMxS1lpS21DVWdRWlBCQWV6SkttUzNHR0QyUCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyODM5OTI4ODYxfQ.QKCUrLiI_yCI_ZCxdvfOOSruJjeDpYSh_MnB7hhiNmU"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "95434",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:llm-structured-output-fai",
          "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": "98386",
          "reference": "2JfAuF26J1yNJmK7D8JfuX7p3QVGUmb7mx2tysKYqEF3",
          "session": "eyJhcnRpY2xlSWQiOiJsbG0tc3RydWN0dXJlZC1vdXRwdXQtZmFpbHVyZXMiLCJyZWZlcmVuY2UiOiIySmZBdUYyNkoxeU5KbUs3RDhKZnVYN3AzUVZHVW1iN214MnR5c0tZcUVGMyIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo5NTQzNCwiZXhwIjoxNzkyODM5OTI4ODYxfQ.iuKGc0Fr0MnDaPx3ImmP0Yijt66sjm29sWdeT3fDjpM",
          "solUsdPrice": 101.64
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Fix LLM JSON and structured output failures - schema-enforced output, truncation checks, validation and repair retries",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "Why LLM output breaks parsers (fences, truncation, missing fields, wrong types), and how to prevent it with provider structured-output modes, tight schemas, max-token headroom, strict validation, repair retries and safe fallbacks.",
              "c": "AI & Agents",
              "id": "llm-structured-output-failures",
              "t": "Fix LLM JSON and Structured Output Failures"
            },
            "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/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-24T11:03:28.909Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-24T11:03:28.621Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/llm-structured-output-failures",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "llm",
      "json",
      "structured-output",
      "schema",
      "validation"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Fix LLM JSON and structured output failures - schema-enforced output, truncation checks, validation and repair retries"
}

What the leaf hashes

{"body":"b1287953e0f146eb6e88b77b4c00a897d42a17b6171b1c62b1bcd3ccffe0da13","id":120179,"kind":"listing","method":"baseline/1","observed_us":1793025617456325,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/llm-structured-output-failures","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

0x5d5e6906e323232522a212943348cf34b8c502c922cc7ede0529549280fd5749
0x1d535228a3ff46184148ed366667dcaa1e904d36844fe1180c005b38930cdbcf
0x9ba3ab5ecb5d2c0c4d9090c5c2c6e2ff1f0fd7fc08ea9f6e762f70e6a3243cf4
0xa2cdc2bdeaf2f193660ef562ae598cedd578fa2ba4b497dc4dad991e57d2f624
0xf9bdee15c97cb5d9e23ef9080d15b228d065dee49fa90ceb5c9f6c553100d39b
0xcb355a9f4556fd1708f6f2e9eefd2fc9ec7cbb074e7512dfe7fb24e601a08a64
0x06dd3d796cffaa5f5c9a5e3d715a5e58670856c69de0d99e06dcaa9f46819c27
0x215ad08cfba37de6cc68a6082c1b3fb3952cbc929c97c53d186a1c957465d0c6
0x2dbfd5cce748a6fd4938d7cb87267e05234654474e1ff65d06ee76c8629d829d
0x71c75f9312be1c838a554f724b6fc57894e7c4486ab7e013b6a6a8d65cfaebea
0xb91bf0ba3ebff769d1b88f93fcb076477149787a7e31c3c28ce4fe8823b7c144
0x2121cc2dbcb8663af57743dc445c8a59e5bbfffe89703f0606c9843f0d35aff8
0x66883b42f4167ade51c4909f050c5478524e23786fb0b5c48bd1a53580960a68
0x216cebb9ae5414599109a02297c4817d7d1c6b1394afeb97efe38e32f0053974
0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON