Pay-per-call access to Anthropic Claude models (Sonnet, Opus, Haiku) via MPP on Tempo L2.
What it does
This MPP (Micropayment Protocol) endpoint proxies Anthropic's Claude API, offering access to the Claude model family — including Sonnet, Opus, and Haiku variants — with per-call payment settlement on Tempo L2. The endpoint is located at https://anthropic.mpp.tempo.xyz/v1/messages and is designed to accept POST requests following the Anthropic Messages API format.
The endpoint did not return a 402 MPP challenge on HEAD or GET probes, which is expected since the Anthropic Messages API is POST-only. All crawled pages on the origin domain (root, /docs, /api, /pricing, /README) returned 404, so no documentation, pricing details, or schema information could be verified from the provider directly. The existing Bazaar listing states that pricing varies by model, consistent with Anthropic's tiered pricing across Claude 3.5 Sonnet, Claude 3 Opus, and Claude 3 Haiku.
Because the probe only attempted HEAD and GET (not POST), the endpoint may still be live and functional for its intended POST method. However, without a captured 402 challenge or any supporting documentation from the origin, the liveness and current pricing cannot be confirmed. Users should attempt a POST request to verify availability and retrieve the MPP payment challenge.
Capabilities
Use cases
- —Generating conversational AI responses without an Anthropic API key
- —Agent-driven text generation with per-call crypto micropayments
- —Accessing Claude models for summarization, coding, and analysis tasks
- —Building AI pipelines that settle costs on Tempo L2
Fit
Best for
- —Agents needing on-demand Claude access without subscription commitments
- —Developers who want crypto-settled pay-per-call LLM inference
- —Applications requiring multiple Claude model tiers (Haiku for speed, Opus for quality)
Not for
- —High-volume production workloads where a direct Anthropic subscription is more cost-effective
- —Use cases requiring guaranteed uptime SLAs (no documentation or status page available)
Quick start
curl -X POST https://anthropic.mpp.tempo.xyz/v1/messages \
-H "Content-Type: application/json" \
-H "anthropic-version: 2023-06-01" \
-d '{
"model": "claude-sonnet-4-20250514",
"max_tokens": 256,
"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
}Endpoint
Quality
The probe did not capture a 402 MPP challenge (only HEAD/GET were tried on a POST-only endpoint), and every crawled page returned 404. No schema, pricing, or documentation is available from the provider. The listing is essentially a stub based on the Bazaar metadata alone.
Warnings
- —Endpoint did not return 402 on HEAD or GET; POST was not probed, so liveness is unconfirmed.
- —All origin pages (/docs, /api, /pricing, /README, /) return 404 — no documentation available.
- —Pricing details are unknown; the Bazaar listing says 'price varies by model' but no amounts were captured.
- —No OpenAPI schema or MPP challenge details could be retrieved to verify capabilities.
Citations
- —Endpoint is listed as providing Claude chat completions (Sonnet, Opus, Haiku) via native and OpenAI-compatible APIshttps://anthropic.mpp.tempo.xyz
- —Probe returned 404 on HEAD and GET attempts to the /v1/messages endpointhttps://anthropic.mpp.tempo.xyz/v1/messages