Evidence row 1790659

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://freetier-agent-api.pages.dev/api/free-tiers"
    ]
  ],
  "name": "Agent Extraction API",
  "owner_address": "0x165eb3dc3e98403ecb1141e90400f5e71806554b",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x165Eb3dC3E98403ecB1141e90400F5e71806554B",
        "scheme": "exact"
      }
    ],
    "description": "Free tiers: Current free-tier limits for developer services (hosting, DB, auth, email, CI, monitoring) and AI/LLM APIs, with official source URLs. Filter: q, category.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "q": "llama"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "count": 3,
              "results": [
                {
                  "alive": "yes",
                  "auth": "apiKey",
                  "category": "AI / LLM API",
                  "checked_at": "2026-10-17T19:51Z",
                  "cors": "",
                  "description": "Llama / Qwen models",
                  "free_tier_details": "Free tier with rate limits",
                  "http_status": 200,
                  "https": "Yes",
                  "kind": "ai_api_free_tier",
                  "name": "Cerebras - Llama / Qwen models",
                  "url": "https://inference-docs.cerebras.ai/support/rate-limits"
                },
                {
                  "alive": "yes",
                  "auth": "apiKey",
                  "category": "AI / LLM API",
                  "checked_at": "2026-10-17T19:51Z",
                  "cors": "",
                  "description": "LLMs (Llama, Mistral, etc.)",
                  "free_tier_details": "10,000 Neurons/day free",
                  "http_status": 200,
                  "https": "Yes",
                  "kind": "ai_api_free_tier",
                  "name": "Cloudflare Workers AI - LLMs (Llama, Mistral, etc.)",
                  "url": "https://developers.cloudflare.com/workers-ai/platform/pricing/"
                }
              ],
              "returned": 3,
              "source": "FreeTier Kits Verified API Directory (CC BY 4.0; public-apis MIT)",
              "sources": [
                {
                  "license": "MIT",
                  "name": "public-apis/public-apis",
                  "url": "https://github.com/public-apis/public-apis"
                },
                {
                  "license": "CC BY 4.0",
                  "name": "FreeTier Kits link check 2026-10-17 + provider pricing pages",
                  "url": "https://freetier-agent-api.pages.dev"
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "category": {
                      "type": "string"
                    },
                    "q": {
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "count": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "results": {
                      "items": {
                        "type": [
                          "object",
                          "null"
                        ]
                      },
                      "type": "array"
                    },
                    "returned": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "sources": {
                      "items": {
                        "type": [
                          "object",
                          "null"
                        ]
                      },
                      "type": "array"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "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/v1793252197/bazaar-icons/19906174df41ffa4.png",
    "lastUpdated": "2026-11-01T07:09:08.148Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-11-01T07:09:07.708Z"
    },
    "resource": "https://freetier-agent-api.pages.dev/api/free-tiers",
    "serviceName": "Agent Extraction API",
    "tags": [
      "directory",
      "free-tier",
      "developer-tools"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Free tiers: Current free-tier limits for developer services (hosting, DB, auth, email, CI, monitoring) and AI/LLM APIs, with official source URLs. Filter: q, category."
}

What the leaf hashes

{"body":"dfb555ce44d671bd6b345f84454c53e65d1999376a9cc089494c47ac980ae8a4","id":1790659,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559936767647,"prev":1261567,"subject":"x402_bazaar:https://freetier-agent-api.pages.dev/api/free-tiers","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0xf3094cbf5ddb31e98339d7c29e307c573a0bdee5418167888895e69a3e30a4bf
2. 0xcfae38f2adbe90785b62490098d5d234649fe08639938118c9a4e45b75a70816
3. 0xc55d94718b61f247fc28a860bcdbbde25d33cfac035e38d5746a042c77e70dd1
4. 0x7b9b2403d23611819cc981efa25b7329f84c0b705830eed0b8342fc91f938954
5. 0x0db770deaa748b06005f89fcf931e582aa9f7184157c3cd391efd1e894d850cc
6. 0x49853b813b9ec93b5468e3fa4a56f2700b76802d16ee56fefe38b9f5e7f4fc16
7. 0x44dee35e4c63a956e13b58a4872136e8aaf6af66abc7ac6afe10ca799f9a1123
8. 0x5318cfd9b059b6a1d68d5cb711cfec3f2105b4dbde6f05b382a2ddbdb58d80d1
9. 0x29c06ffd74e713d3cc8de051fd283dd49edace11b51954111b01a8ff1556ef45
10. 0x6c60f409481872fe697d0d0ac067cfed99a49e453ada7f9914240f892099589c
11. 0x4f5d8345ad6d565722b94234825ccb1e357475cb5f00852a1cd5f88558bc089b
12. 0xd1faaa0778bd48fa6c68cd4b13bced5b45dbedd3c663d1d8a1448916424846db
13. 0x0c23c9192bfe154b4061fe80d841228e518702b191bcc9803922e60782f4706b
14. 0x9b4eda8f413d128915df51c98c771c8ee622b35a4252b9c2a803dd51ad66d4c8
15. 0x624db22ddd30d851957cc9d44cc5b314f300cfe0ff69cfbcfe0b2a2df8fdd12c
16. 0x1023fddec22f7cf1aff98422f0e5714dcc4ca7df3408bb6d4550d6f770e5033a
17. 0xf7af9137c03da92bdd37d086da37554097bcd1fce016f93f2e66d18b71970c5d

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90