Claude API for AI agents, pay per token, no API key or account - POST…

Claude API for AI agents, pay per token, no API key or account - POST an Anthropic Messages request (messages, system, tools, tool_choice, thinking) and get the full response back. Claude Opus 5, Sonnet 5, Haiku 4.5. Tool calling / function calling supported. Billed on actual usage at list price + 25%, capped at $0.25 per call (x402 upto scheme). LLM inference, chat completions, keyless Claude, Anthropic proxy. Free price sheet: /llm/models.

Unavailable3 calls · 1 buyer in 30 days

Sample input

input4 keys

body3 keys

max_tokens64

messages[…]1 item

model"haiku"

bodyType"json"

method"POST"

type"http"

inputobject, 4 keys

Sample response

response3 keys

content1 item

0{ text, type }2 keys

stop_reason"end_turn"

usage2 keys

input_tokens12

output_tokens8

responseobject, 3 keys

Track record

Paid calls, last 30 days: 3
Buyers, last 30 days: 1
Last paid call: last month

Reported by the x402 directory.

Priced per call

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