Gives your AI agent crate search, documentation, dependency analysis, download stats, and security auditing to make informed decisions about Rust dependencies.
cratesio-mcp is an MCP project maintained in the joshrotenberg/cratesio-mcp repository. The maintainer describes its purpose as “Gives your AI agent crate search, documentation, dependency analysis, download stats, and security auditing to make informed decisions about Rust dependencies”. Read the project documentation for the complete scope.
The maintainer’s configuration uses https://cratesio-mcp.fly.dev/. It declares streamable-http transport. Check the project’s account and authentication instructions when adding the endpoint to your client.
Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.
Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| search_crates | Search for crates by name or keywords |
| get_crate_info | Detailed crate metadata (description, links, stats) |
| get_crate_versions | Version history with release dates and download counts |
| get_crate_version | Detailed metadata for a specific version |
| get_crate_readme | README content for a crate version |
| get_crate_features | Feature flags and their sub-feature activations |
| get_crate_docs | Browse documentation structure from docs.rs |
| get_doc_item | Full docs for a specific item (fn, struct, trait) |
| search_docs | Search for items by name within a crate's docs |
| get_dependencies | Dependencies for a specific version |
| get_reverse_dependencies | Crates that depend on a given crate |
| audit_dependencies | Check deps against OSV.dev vulnerability database |
| get_downloads | Download statistics and trends |
| get_version_downloads | Daily download stats for a specific version |
| get_crate_authors | Authors listed in Cargo.toml |
| get_owners | Crate owners and maintainers |
| get_user | User profile by GitHub username |
| get_user_stats | Total download stats for a user's crates |
| get_summary | crates.io global statistics |
| get_categories | Browse crates.io categories |
| get_category | Details for a specific category |
| get_keywords | Browse crates.io keywords |
| get_keyword | Details for a specific keyword |
| compare_crates | Compare two or more crates side by side (downloads, versions, dependencies, freshness) |
| get_dependency_tree | Full transitive dependency tree with configurable depth and deduplication markers |
| get_crate_health | Comprehensive health report (maturity, adoption, maintenance, security, dependency weight) |
| get_alternatives | Find and compare alternative crates based on keywords, downloads, and recent activity |
| get_crate_changelog | Changelog content from a crate's GitHub repository, optionally filtered to a version |
| get_release_timeline | Version-over-version registry-metadata diff: feature changes, MSRV bumps, yanked status, release cadence |
{
"mcpServers": {
"cratesio-mcp": {
"type": "http",
"url": "https://cratesio-mcp.fly.dev/"
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
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