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chat-completions-api · x402.agentindex.world

437 models, no account, no API key, pay per call in USDC -…

437 models, no account, no API key, pay per call in USDC - OpenAI-compatible chat completions and AI inference gateway (Claude, GPT, Gemini, Llama, Mistral and more in one endpoint). Price: from $0.001, computed from your max_tokens × model rate × 1.10 (you sign a ceiling; unused tokens are not refunded). 20s server-side timeout - never charged if it fires; set your client timeout to 30s. Try GET /v1/chat/completions/sample.

Ready now4 calls · 3 buyers in 30 days

Input

Max completion tokens, capped at 4096 - also bounds the x402 upto price ceiling.
Messages
OpenAI-format chat messages: [{role, content}, ...].
messages-1
OpenRouter model id from GET /v1/models, e.g. "openai/gpt-4o-mini".

Sample response

Published by the provider. Your run returns a fresh response.

response6 keys
choices1 item
id"gen-1790576252-UzfZJjqk0Ld9PGyd1ADA"
model"openai/gpt-4o-mini"
object"chat.completion"
usage3 keys
completion_tokens2
prompt_tokens10
total_tokens12
x402_receipt4 keys
latency_ms612
model_served"openai/gpt-4o-mini"
price_paid_usdc0.001
upstream"llm-gateway"
responseobject, 6 keys
Your agent can do this on its own
Add the MCP URL in Claude Code, Cursor or Codex. Your agent can run Tools within its spending limits, or ask for approval each time. Connect your agent

Connect your agent

Add one MCP URL and your agent can find and run this tool within its spending limits. Choose “Ask each time” if you want to approve every Call.

MCP URL

https://app.aecon.ai/mcp
Terminalbash
claude mcp add --transport http --scope user agentic-economy "https://app.aecon.ai/mcp"

In Claude Code, open /mcp, select agentic-economy, then choose Authenticate.

Track record

Paid calls, last 30 days
4
Buyers, last 30 days
3
Last paid call

Reported by the x402 directory.

A$0.0015 per call