# Changelog State API — Wormhole SDK Release Tracker

> Changelog State API — Wormhole SDK Release Tracker is a paid API for AI agents from changelog-state-api.replit.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Returns structured recent release entries for the Wormhole SDK, paginated and newest-first, via a paid x402 endpoint.

## Facts

- Endpoint: GET https://changelog-state-api.replit.app/api/monitors/wormhole-sdk?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/changelog-state-api-wormhole-sdk-release-tracker-17c02250
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u_QYAk0ZqN_q4TD6UB920

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability changelog-state-api-wormhole-sdk-release-tracker-17c02250
```

Example prompt: Can you pull the 10 most recent structured release entries for Wormhole SDK from the Changelog State API?

## When to prefer this

Use this endpoint when you specifically need structured, paginated release data for the Wormhole SDK and want machine-readable output rather than scraping raw changelogs. It is ideal for agents that need to monitor SDK updates, detect breaking changes, or build automated digests. Prefer this over generic web scraping when you want clean, consistent JSON and are willing to pay a small per-call fee via x402.

## Known failure modes

- 400 Bad Request if cursor is malformed or was issued for a different vendor
- 400 if slug does not match a tracked vendor
- 402 Payment Required if x402 payment header is missing or invalid
- 404 if the vendor slug returns no data (slug placeholder used instead of real slug)
- 500 if the upstream changelog source is temporarily unavailable

## How this service works

Structured recent releases for one tracked vendor.

## Output

A paginated JSON object containing structured release entries for Wormhole SDK, ordered newest-first. Each entry typically includes version, release date, and changelog content. The response also includes a `nextCursor` token to retrieve subsequent pages. The response is only returned after a successful x402 micropayment of $0.01 USDC.

## Request schema (JSON Schema)

```json
{
 "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": {
      "limit": {
       "type": "integer",
       "default": 5,
       "maximum": 50,
       "minimum": 1,
       "description": "Maximum number of release entries to return on this page. The page size, not a total: use `cursor` to walk past it."
      },
      "cursor": {
       "type": "string",
       "default": "",
       "maxLength": 512,
       "description": "Opaque next-page token, copied verbatim from `nextCursor` on the previous response for this same vendor. Omit it — or send the empty string — to start at the newest entry. It names a position in the newest-first order rather than an offset, so a page you have already read never shifts under you: an entry that arrives mid-walk takes the place its own publish date gives it — above the cursor, on ground you have already covered, or below it, still ahead of you — instead of renumbering every page behind it. It does not expire; a walk can be paused and resumed. Do not construct or edit one: a token that is malformed, or was issued for a different vendor, is refused with 400 and is never charged."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "enum": [
      "json"
     ],
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   },
   "description": "Full structured recent releases (paid)"
  }
 },
 "description": "Call shape for GET /api/monitors/{slug}."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/changelog-state-api-wormhole-sdk-release-tracker-17c02250/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from changelog-state-api.replit.app](https://www.zero.xyz/host/changelog-state-api.replit.app/llms.txt)