# OpenAPI Document Summarizer

> OpenAPI Document Summarizer is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Summarizes an OpenAPI document into its title, version, path counts, tags, and authentication hints

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/openapi-summary
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-delx-ai-a636ac55
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2K07rELlp5rGQAEx1MPXH

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 api-delx-ai-a636ac55 -d '<json body>'
```

Example prompt: Can you give me a quick summary of this OpenAPI spec — what's the API called, what version is it, how many paths does it have, what tags are used, and what kind of auth does it require?

## When to prefer this

Use this endpoint when an agent needs a fast, structured digest of an OpenAPI specification without parsing the full document itself — ideal for API discovery pipelines, capability routing, or when presenting a human-readable snapshot of an API's structure. Prefer this over full spec parsing when you only need the top-level metadata and don't need individual endpoint schemas.

## Known failure modes

- Invalid or malformed OpenAPI document returns a parsing error
- Document exceeds size limits returns an error
- Non-OpenAPI content submitted returns an unrecognized format error
- Network timeout if document URL is unreachable
- Missing required document body returns a 400 bad request

## How this service works

Turn an OpenAPI document into title, version, path counts, tags, and auth hints for $0.001 USDC. One single-fetch structured result, no API key.

## Output

Returns a condensed overview of the OpenAPI document including the API title, version string, total count of paths, list of tags, and hints about authentication schemes used (e.g. Bearer, API key, OAuth2).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string"
  },
  "timeout": {
   "type": "integer",
   "maximum": 15,
   "minimum": 1
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "title": "Delx Agent Operations REST API",
   "version": "3.3.0",
   "auth_hints": [
    "x402"
   ],
   "path_count": 31,
   "x402_path_count": 25
  },
  "tool_name": "util_openapi_summary"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-delx-ai-a636ac55/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)