# Open5e D&D Monster Search

> Open5e D&D Monster Search is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Search open-license Dungeons & Dragons monsters by keyword across multiple sourcebooks, returning JSON results.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/open5e-monsters
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/open5e-d-d-monster-search-44c64165
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fNeII19fHiIaiwEbJxPOH

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 open5e-d-d-monster-search-44c64165 -d '<json body>'
```

Example prompt: Can you search for D&D monsters matching 'dragon' across open-license sourcebooks and show me what comes back?

## When to prefer this

Use this endpoint when you need open-license D&D 5e monster data searchable by keyword across multiple sourcebooks. Ideal for tabletop RPG tools, campaign assistants, or game master helpers that need structured monster stat blocks without requiring a proprietary API key. Prefer over manual lookups or scraping when you need machine-readable JSON monster data from Open5e.

## Known failure modes

- Empty results if no monsters match the query keyword
- Malformed or missing q parameter returns an error
- Rate limiting or payment failure returns 402 Payment Required
- Obscure or misspelled monster names may return no results

## How this service works

Search open-license D&D monsters across many sourcebooks by keyword (param q). Query: ?q= Returns JSON.

## Output

A JSON array or object containing matching monster entries from open-license D&D sourcebooks, including stat blocks, abilities, types, challenge ratings, and source references for monsters whose names or descriptions match the keyword query.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/open5e-d-d-monster-search-44c64165/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)