Api Endpoint

Changelog State API

Detected changelog update history for one tracked vendor.

Open interactive test console

Offering

Provider: changelog-state-api.replit.app
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Development
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://changelog-state-api.replit.app/api/monitors/foundry/changes
MIME type: application/json
First seen: 2026-10-16T02:05:25.408Z
Last seen: 2026-11-01T17:02:15.034Z
Tags: None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xb23c3825de4ca8a479183092ae8d1d58d2736fc9"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "6UNbfD8mgSqgFDxxwE29LfgKrBqrZBt4R4L4Resh4yct"
  }
]

Observed health

Status: Healthy
Latest latency: 111 ms
Average latency: 445 ms
HTTP status: 402
Last checked: 2026-11-01T17:02:15.029Z
Reachability: 100% over 11 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "pathParams": {
      "type": "object",
      "properties": {
        "slug": {
          "type": "string",
          "minLength": 1,
          "maxLength": 64,
          "pattern": "^[a-z0-9][a-z0-9-]*$",
          "example": "openai",
          "description": "Vendor slug, lowercase alphanumeric with dashes. Take one from GET /api/monitors and substitute it into the path: `{slug}` is a placeholder that names no vendor and never returns data. Worked example: GET /api/monitors/openai."
        }
      },
      "required": [
        "slug"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "limit": {
          "type": "integer",
          "minimum": 1,
          "maximum": 200,
          "default": 50,
          "description": "Maximum number of change rows to return."
        },
        "since": {
          "type": "string",
          "format": "date-time",
          "description": "Only return changes detected at or after this instant."
        },
        "type": {
          "type": "string",
          "enum": [
            "new_release",
            "version_changed",
            "date_changed",
            "title_changed",
            "breaking_signal"
          ],
          "description": "Restrict to a single change type."
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "type": "object",
      "required": [
        "type",
        "method"
      ],
      "properties": {
        "type": {
          "type": "string",
          "const": "http"
        },
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "pathParams": {
          "type": "object",
          "required": [
            "slug"
          ],
          "properties": {
            "slug": {
              "type": "string",
              "example": "openai",
              "pattern": "^[a-z0-9][a-z0-9-]*$",
              "maxLength": 64,
              "minLength": 1,
              "description": "Vendor slug, lowercase alphanumeric with dashes. Take one from GET /api/monitors and substitute it into the path: `{slug}` is a placeholder that names no vendor and never returns data. Worked example: GET /api/monitors/openai."
            }
          }
        },
        "queryParams": {
          "type": "object",
          "properties": {
            "type": {
              "enum": [
                "new_release",
                "version_changed",
                "date_changed",
                "title_changed",
                "breaking_signal"
              ],
              "type": "string",
              "description": "Restrict to a single change type."
            },
            "limit": {
              "type": "integer",
              "default": 50,
              "maximum": 200,
              "minimum": 1,
              "description": "Maximum number of change rows to return."
            },
            "since": {
              "type": "string",
              "format": "date-time",
              "description": "Only return changes detected at or after this instant."
            }
          }
        }
      },
      "additionalProperties": false
    },
    "output": {
      "type": "object",
      "required": [
        "type"
      ],
      "properties": {
        "type": {
          "enum": [
            "json"
          ],
          "type": "string"
        },
        "example": {
          "type": "object"
        }
      },
      "description": "Detected changelog update history (paid)"
    }
  },
  "description": "Call shape for GET /api/monitors/{slug}/changes."
}