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
Claude Code / Claude Desktop:
Or in any MCP client config:
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".