apipriceindex-mcp

An MCP server that gives any AI agent live, verified LLM API prices — and today's deals.

Ask your assistant "which LLMs are free to call right now?", "what's the cheapest model at least as good as GPT-5.6 Sol?" or "what would 200M input / 15M output tokens a month cost me on Sonnet vs GPT?" and it answers from today's index — every price with its verification date, cross-check confidence and source URL. Data from apipriceindex.com (CC BY 4.0, re-checked daily against official pricing pages).

Tools

Install

pip install apipriceindex-mcp

Claude Code / Claude Desktop:

claude mcp add apipriceindex -- apipriceindex-mcp

Or in any MCP client config:

{ "mcpServers": { "apipriceindex": { "command": "apipriceindex-mcp" } } }

Behavior

• Data is fetched live from the index (15-minute in-memory cache) — never stale training data.
• Index unreachable → explicit error. No cached or invented price is ever served silently.
• Index older than 14 days → answers still come, with a warning pointing at the index's health endpoint.
• Model not tracked → says so, links the dataset. No price invented.
• Cache discount only where the provider publishes a cached-input price.
• Deals always carry an end date — no end date when the host publishes none — and the link to the host's own page.
• Speed and availability are read from OpenRouter and always come with their window (median over 30 minutes, share of successful requests over 24 hours). No tail latency or error rates.
• One third-party score: the Epoch Capabilities Index by Epoch AI (CC BY 4.0). Every answer that carries it carries its credit. Otherwise, cost only: the index does not rank model quality.

Environment: APIPRICEINDEX_URL overrides the dataset URL (testing); deals.json and pricing-history.csv are read next to it.

Changelog

• 0.2.0 — list_deals, offers_table, compare_models, cheapest_at_level, price_changes; search_models filters by max price, capabilities and min speed; Epoch score, speed and availability where known. The three 0.1 tools answer as before.
• 0.1.1 — search_models, get_price, estimate_cost.

License

Code: MIT. Price data: CC BY 4.0, attribution "API Price Index". Epoch Capabilities Index: CC BY 4.0, credit Epoch AI.