OpenAI-compatible chat completions proxy that converts requests to Anthropic Claude format, settled via MPP/Tempo.
What it does
This endpoint at anthropic.mpp.tempo.xyz provides an OpenAI-compatible chat completions interface that automatically converts requests into Anthropic's native API format. It is part of a broader Anthropic proxy offering Claude model access (Sonnet, Opus, Haiku) through both native and OpenAI-compatible APIs, with payment settled via the MPP (Micropayment Protocol) on Tempo L2.
The endpoint follows the standard /v1/chat/completions path convention used by OpenAI-compatible APIs, meaning existing tooling and SDKs that target the OpenAI chat completions format should work with minimal changes — callers simply point their base URL to this proxy. Under the hood, requests are translated to Anthropic's Messages API format and forwarded to Claude models.
However, at the time of probing, the endpoint did not return the expected 402 MPP challenge on HEAD or GET requests, and all crawled pages (root, /docs, /api, /pricing, /README) returned 404 Not Found. This may indicate the endpoint is only responsive to POST requests with a properly structured body, or it may be temporarily unavailable or decommissioned. Without a captured 402 challenge, pricing details (per-token or per-request cost, settlement currency, and chain) cannot be confirmed. Prospective users should attempt a POST request with a valid chat completions payload to verify liveness.
Capabilities
Use cases
- —Accessing Claude models through an OpenAI-compatible interface without modifying existing client code
- —Pay-per-request Claude inference without an Anthropic API key or subscription
- —Building AI agents that dynamically select and pay for LLM endpoints via MPP
Fit
Best for
- —Developers with OpenAI-format tooling who want to use Anthropic Claude models
- —Agent workflows that need micropayment-settled LLM access on Tempo L2
- —Quick experimentation with Claude without setting up an Anthropic account
Not for
- —Production workloads requiring guaranteed uptime — endpoint liveness is currently unconfirmed
- —Users who need detailed usage analytics or billing dashboards from the provider
Quick start
curl -X POST https://anthropic.mpp.tempo.xyz/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-20250514",
"messages": [{"role": "user", "content": "Hello, Claude!"}]
}'Example
Request
{
"model": "claude-sonnet-4-20250514",
"messages": [
{
"role": "user",
"content": "Explain quantum entanglement in two sentences."
}
],
"max_tokens": 256
}Response
{
"id": "chatcmpl-abc123",
"model": "claude-sonnet-4-20250514",
"usage": {
"total_tokens": 62,
"prompt_tokens": 14,
"completion_tokens": 48
},
"object": "chat.completion",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Quantum entanglement is a phenomenon where two particles become correlated such that measuring one instantly determines the state of the other, regardless of distance. This non-local correlation has been experimentally verified and underpins emerging quantum computing and communication technologies."
},
"finish_reason": "stop"
}
],
"created": 1700000000
}Endpoint
Quality
The endpoint did not return a 402 MPP challenge on HEAD or GET, and all crawled pages returned 404. No schema, pricing, or documentation is available. The listing is largely inferred from the existing title/description and URL path conventions. This is effectively a stub.
Warnings
- —Endpoint did not return 402 on HEAD or GET — may only respond to POST, or may be offline/decommissioned
- —All crawled pages (root, /docs, /api, /pricing, /README) returned 404 Not Found
- —No pricing information available — settlement currency, amount, and chain are unknown
- —No OpenAPI schema or documentation was found
- —Example request and response are inferred from OpenAI chat completions conventions, not confirmed by the provider
Citations
- —Endpoint is described as OpenAI-compatible chat completions auto-converted to Anthropic formathttps://anthropic.mpp.tempo.xyz/v1/chat/completions
- —Part of Anthropic offering Claude chat completions (Sonnet, Opus, Haiku) via native and OpenAI-compatible APIshttps://anthropic.mpp.tempo.xyz/v1/chat/completions