# Melssa Guide Corpus Endpoint

> Melssa Guide Corpus Endpoint is a paid API for AI agents from melssa.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Retrieves a single guide as source markdown by its slug, with optional locale selection

## Facts

- Endpoint: GET https://melssa.com/api/agent/corpus/:slug
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/melssa-guide-corpus-endpoint-98802f66
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CA6BQ3EZjA0jiCLZHiclL

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 melssa-guide-corpus-endpoint-98802f66
```

Example prompt: Fetch me the melssa guide with slug 'getting-started' in Spanish so I can read its full markdown content.

## When to prefer this

Use this endpoint when you need the raw markdown source of a specific named guide from melssa.com, especially when you know the slug ahead of time (from the manifest) and optionally need a specific curated human translation in one of the supported locales (en, de, ru, es, bg, he). Prefer this over a search endpoint when the guide slug is already known.

## Known failure modes

- 404 if slug does not exist in the system
- 404 if the requested locale has no translation for that slug (no fallback to English)
- Invalid slug format (must match ^[a-z0-9]+(?:-[a-z0-9]+)*$) returns validation error
- Unsupported locale value returns validation error
- Missing or malformed path parameter returns error

## How this service works

One guide as source markdown

## Output

Returns the full source markdown text of the requested guide for the given slug and locale. If the locale has no translation for the slug, returns a 404. The manifest endpoint at /api/agent/manifest lists all available slugs and which locales each supports.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "slug"
     ],
     "properties": {
      "slug": {
       "type": "string",
       "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$",
       "description": "Guide slug. The free manifest at /api/agent/manifest lists every one."
      }
     },
     "additionalProperties": false
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "locale": {
       "enum": [
        "en",
        "de",
        "ru",
        "es",
        "bg",
        "he"
       ],
       "type": "string",
       "description": "Curated human translation to return. Omit for the English original. A locale with no row for that slug is a 404, not a fallback to English — /api/agent/manifest lists which locales each slug has."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/melssa-guide-corpus-endpoint-98802f66/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from melssa.com](https://www.zero.xyz/host/melssa.com/llms.txt)