Compare LLM API prices, search models and providers, and access reviewed benchmark results.
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First seen 4 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
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7
Tools
From an anonymous probe
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Tools
| Tool | Description | Behaviour |
|---|---|---|
| benchmark_list | Discover exact benchmark IDs, editions, score units, configurations, provenance, and reviewed result counts before calling benchmark_results. Empty benchmarks are retained with resultCount 0. | Read-only |
| benchmark_results | Get reviewed scores for an exact benchmark_id from benchmark_list. Join result.modelId to catalog_search model.id. Compare scores only within the same benchmark edition and configuration. Includes source provenance and reported coding-agent usage when published. Follow pagination.hasMore. | Read-only |
| catalog_search | Find canonical model slugs, context limits, and provider prices. Optional provider_slug filters availability, not the provider in bestOffer. bestOffer is selected for 10M input + 2M output tokens; use offer_compare for your workload. Follow pagination.hasMore. | Read-only |
| execute | Run a JavaScript async function in an isolated sandbox, composing catalog_search, model_detail, offer_compare, benchmark_results, provider_list, and benchmark_list as catalog.* methods. Return a small JSON value. Example: async () => { const page = await catalog.catalog_search({query: 'claude', page_size: 5}); return page.data.models.map(m => ({slug: m.slug, prices: m.bestOffer?.prices})); }. No network, secrets, or database binding is exposed. Shared worldwide execution budgets: 100 per UTC minute and 5000 per UTC day. Limits: 30 executions per client per minute (IPv6 /64), 20 catalog calls and read units (offer_compare uses 5), at most two concurrent calls, 5 seconds wall time, 50ms sandbox CPU, 32KiB code, 64KiB JSON output. JavaScript only; no imports or TypeScript syntax. Use /mcp?mode=code for only search + execute. | Read-only |
| model_detail | Get capabilities, context/output limits, and current sourced provider offers by model_slug from catalog_search. Prices are base-context rates; long-context tiers, cache writes, batch discounts, and free-tier quotas can change actual cost. | Read-only |
| offer_compare | Rank current provider offers for up to five canonical model slugs by the USD cost of your input/output token workload. Input tokens are uncached. Estimates use base-context rates and exclude long-context tiers, cache writes, batch discounts, and free-tier quotas. provider_slugs restricts the ranked offers. | Read-only |
| provider_list | Discover accepted provider slugs, roles, and current comparable model/offer counts. Provider minimum input and output prices are independent minima and may belong to different models; use offer_compare for an actual quote. | Read-only |
| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Official MCP Registry | Cheapest LLM API | - | 4 Oct 2026 |