apipriceindex-mcp
An MCP server that gives any AI agent live, verified LLM API prices.
Ask your assistant "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
| Tool | What it does |
|---|---|
search_models |
Find model ids by name/provider, filter by context window or open weights |
get_price |
Verified price of one model: input/output/cached input USD per Mtok, verified_at, confidence, source |
estimate_cost |
Monthly bill of a workload; ranks chosen models — or the whole catalog — cheapest first |
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
- Prices are 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.
- Cost only: the index does not rank model quality, and third-party benchmark scores are not redistributed.
Environment: APIPRICEINDEX_URL overrides the dataset URL (testing).
License
Code: MIT. Price data: CC BY 4.0, attribution "API Price Index".
1 maintainer
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