---
title: "Machine discovery before the home page: `api-catalog` (RFC 9727, a linkset with the API and the MCP), `security.txt` (RFC 9116), `x402` (payment manifest: network, wallet and the routes that charge) and `mcp-registry-auth` (the official MCP registry key)."
method: GET
path: "/.well-known/{arquivo}"
---

# Machine discovery before the home page: \`api-catalog\` (RFC 9727, a linkset with the API and the MCP), \`security.txt\` (RFC 9116), \`x402\` (payment manifest: network, wallet and the routes that charge) and \`mcp-registry-auth\` (the official MCP registry key).

`GET /.well-known/{arquivo}`

## Request

- Base URL: `https://okfindex.com`
- URL: `https://okfindex.com/.well-known/{arquivo}`
- Auth: none declared

Returns: `application/linkset+json` for the api-catalog; `application/json` for x402 and apis.json; `text/plain` for the other two.

## Path parameters

- `arquivo` string, required

## Response `200`

`application/linkset+json` for the api-catalog; `application/json` for x402 and apis.json; `text/plain` for the other two.

## Other responses

- `404`: Name outside the five published.

---

[API](https://skmtc.dev/okfindex/apis/okf-index.md) · [All operations](https://skmtc.dev/okfindex/apis/okf-index/llms.txt) · [OpenAPI document](https://skmtc.dev/okfindex/apis/okf-index/revisions/4b13ca3c739f?raw)