Monster Lookup

Looks up a D&D 5e monster by name and returns a compact SRD stat block.

Overview

Looks up a D&D 5e monster by name and returns a compact SRD stat block. Includes size, type, alignment, AC, HP, hit dice, speed, ability scores, challenge rating, and actions; or list monsters filtered by challenge rating and/or type. SRD content only (OGL 1.0a / CC-BY-4.0). Use it as a monster lookup API, SRD monster stat block source, or bestiary search.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/monster-lookup	$0.00345	Invoke Monster Lookup (Search) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/monster-lookup \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/monster-lookup \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace