# AISkills402: MCP & x402 Catalogs — Directory Listing Places

> AISkills402: MCP & x402 Catalogs — Directory Listing Places is a paid API for AI agents from api.aiskills402.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-26).

Returns paginated records of directories/catalogs where you can submit an MCP server, x402 API, or AI agent for listing, including submission details and verification URLs.

## Facts

- Endpoint: POST https://api.aiskills402.com/v1/places/next?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aiskills402-mcp-x402-catalogs-directory-listing-places-59b5ee0f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5H87DxDMob7WjLXV7mn2V

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 aiskills402-mcp-x402-catalogs-directory-listing-places-59b5ee0f -d '<json body>'
```

Example prompt: Give me 10 places where I can submit my MCP server for listing — include submission URLs, what method to use, whether sign-in is required, and how I can verify I got listed.

## When to prefer this

Use this endpoint when you need a curated, up-to-date, paginated list of places to submit an MCP server, x402 API, or AI agent for discovery. It is the right choice when you want structured submission instructions (not just a URL) and want to track changes over time using edition-based diffing. Prefer it over a web search when you need machine-readable, agent-actionable submission metadata with verification controls.

## Known failure modes

- n out of range (must be 5–50) — returns validation error
- invalid cursor format in 'after' field — returns cursor error or empty result
- malformed date pattern in 'since' or 'edition' — rejected by schema validation
- payment failure or insufficient USDC balance — request not fulfilled
- no remaining records — returns empty records array with remaining: 0
- stale edition requested — may return empty or partial results

## How this service works

Where to list an MCP server, x402 API, AI agent or skill - places checked by us, in 5 sections (free and working, paid, backlink only, lists you by itself, broken). $0.01 per record, 5-50 records per call: POST {"n":5} costs $0.05. Each record: how to submit (URL, method, fields, sign-in, review time) and how to check you are listed (URL + control). Next records: same body with after=next_cursor. Only changes: since=<edition>. Whole edition: GET /v1/places/all, $0.99. Free index: GET /v1/places

## Output

A JSON object with a list of directory records (up to 50 per call), each containing the directory name, domain, section classification (free/paid/backlink/auto/broken), submission details (URL, HTTP method, form fields, sign-in requirement, review time), and a verification object (URL and control listing to confirm inclusion). Also includes the current edition date, remaining record count, next pagination cursor, and payment receipt.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "n": {
   "type": "integer",
   "maximum": 50,
   "minimum": 5
  },
  "after": {
   "type": "string",
   "maxLength": 160,
   "minLength": 8
  },
  "since": {
   "type": "string",
   "pattern": "^20\\d\\d-(0[1-9]|1[0-2])-(0[1-9]|[12]\\d|3[01])(?:-[1-9])?$"
  },
  "edition": {
   "type": "string",
   "pattern": "^20\\d\\d-(0[1-9]|1[0-2])-(0[1-9]|[12]\\d|3[01])(?:-[1-9])?$"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "count": 5,
  "replay": false,
  "edition": "2026-11-01",
  "receipt": {
   "tx": "0x<settlement transaction>",
   "settled": true
  },
  "records": [
   {
    "name": "Example Directory",
    "check": {
     "url": "https://example-directory.com/search?q=<your name>",
     "control": "a project already listed there"
    },
    "domain": "example-directory.com",
    "submit": {
     "url": "https://example-directory.com/submit",
     "auth": "none",
     "method": "form",
     "review": "manual"
    },
    "section": 1
   }
  ],
  "remaining": 88,
  "next_cursor": "<opaque cursor>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aiskills402-mcp-x402-catalogs-directory-listing-places-59b5ee0f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aiskills402.com](https://www.zero.xyz/host/api.aiskills402.com/llms.txt)