CheapestInference MCP Server

Remote MCP server for CheapestInference — unlimited LLM inference at a flat monthly price. No token caps, no per-token billing: subscribe to a pool of frontier open-source models and use them through an OpenAI-compatible API (an Anthropic-compatible endpoint is included, so it works with Claude Code, Cursor, and any OpenAI SDK).

This MCP server is the commercial front door. From any MCP client — or from an autonomous agent — you can browse live pools and pricing, get a USDC quote, pay on Base L2, and receive an API key, end to end, without a browser and without a human in the loop.

https://api.cheapestinference.com/mcp

Transport: Streamable HTTP, stateless. No authentication to connect — management tools take your API key as a tool argument.

Note: inference itself is served over the OpenAI-compatible base URL (https://api.cheapestinference.com/v1), not over MCP. The get_connection_info tool hands you ready-to-paste client snippets.

Quick start

Claude Code

claude mcp add --transport http cheapestinference https://api.cheapestinference.com/mcp

Cursor / generic JSON config

{
  "mcpServers": {
    "cheapestinference": { "url": "https://api.cheapestinference.com/mcp" }
  }
}

Related MCP server: volthq-mcp-server

Tools

Subscribing with USDC, end to end

1. list_pools → pick a pool and one or more daily 8-hour blocks (all three = 24/7).

2. get_crypto_quote → exact USDC amount, the payTo address on Base, and a claim-message template.

3. Send the USDC (ERC-20) transfer from your wallet.

4. Sign the claim message (EIP-191, transaction hash filled in) with the same wallet that paid.

5. confirm_crypto_subscription with tx_hash, pool_slug, blocks, signature → your API key for the Unlimited pool.

USDC subscriptions are one-time 30-day purchases — renew by repeating the flow. Card subscriptions (via get_card_checkout_link) auto-renew until cancelled.

Agents with an x402-capable wallet (Coinbase AgentKit, x402-fetch) can also skip subscriptions entirely: keyless requests to the inference endpoint return a 402 with USDC pricing for pay-per-request.

Links

• Website: cheapestinference.com

• Docs: docs.cheapestinference.com/guides/mcp

• Agent subscriptions (REST): docs.cheapestinference.com/guides/agent-subscriptions

• x402 pay-per-request: docs.cheapestinference.com/guides/x402

• Official MCP Registry: com.cheapestinference/mcp

• Directories: Smithery · LobeHub · Glama · mcp.so