# MIME Types List & Lookup

> MIME Types List & Lookup is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

List all MIME types in a category or look up a file extension/MIME type to get its counterpart, with 100+ mappings for Content-Type and upload validation.

## Facts

- Endpoint: GET https://intel.rallylive.ca/dev/mime-list
- 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/mime-types-list-lookup-b4f2eeb2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gElEzBYqo7EOz8hW17TX6

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 mime-types-list-lookup-b4f2eeb2
```

Example prompt: What MIME type should I use for .webp image files, and can you also list all other image MIME types so I can validate uploads in my app?

## When to prefer this

Use this endpoint when you need a reliable, comprehensive MIME type reference for setting HTTP Content-Type headers, validating file uploads, or resolving file extensions — especially in agent or automation workflows where hardcoding MIME mappings is impractical. Prefer over manual lookup tables when you need 100+ mappings covering image, audio, video, text, application, font, and office categories in a single call.

## Known failure modes

- Unknown or unsupported category returns empty or error response
- Invalid file extension with no known MIME mapping returns null or error
- Malformed input causes 400 bad request
- Payment not completed (x402) blocks response
- Ambiguous extension with multiple MIME types may return only primary mapping

## How this service works

MIME type reference: list all types in a category (image, audio, video, text, application, font, office), or look up a single file extension or MIME type to get its counterpart. 100+ mappings for setting Content-Type correctly and validating uploads. $0.01 per lookup.

## Output

Returns a list of MIME type mappings for the requested category (e.g. all image/* types with their file extensions), or for a single lookup returns the corresponding MIME type string or file extension. Each entry includes the MIME type string and associated file extension(s), useful for setting Content-Type headers or validating file uploads.

## 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"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mime-types-list-lookup-b4f2eeb2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)