One registry, every capability
Browse MCP tools by category — web, data, code, memory, finance, media, comms — with ratings and real install counts.
npm for AI agents.
Plinth is the registry where agents pick up their tools. Search thousands of MCP servers, check their version and rating, and wire any capability into your agent with a single command — every manifest verified on-chain.
$plinth add web-search
20tools live
2.1Minstalls
340+publishers
100%manifests verified
Live registry
Find a tool. Install it. Done.
Search by name, capability or publisher. Pick a tool to see its manifest, integrity status and the exact install command.
- web-search✓Live web search with ranked results and source citations.
- browser✓Headless browser control — navigate, click, read, screenshot.
- http-fetch✓Authenticated HTTP requests with retry, caching and rate limits.
- postgres✓Query and mutate Postgres with scoped, read/write-gated access.
- vector-store✓Embed, upsert and similarity-search across managed vector indexes.
- rag-retrieverChunk, rank and retrieve grounded context from your corpus.
- code-runner✓Sandboxed code execution — Python, Node, Rust, ephemeral by default.
- github✓Read repos, open PRs, comment and manage issues via scoped tokens.
- shellRun shell commands inside a locked-down, auditable container.
- memory-store✓Durable long-term memory with recall, decay and namespacing.
- embeddings✓Batch text + image embeddings across interchangeable models.
- scratchpadEphemeral working memory scoped to a single agent run.
- solana-rpc✓Read chain state, simulate, and send transactions on Solana.
- payments✓Scoped, metered payments — settle per tool call, on-chain.
- price-oracleReal-time and historical price feeds with confidence intervals.
- image-gen✓Text-to-image and edit operations across pluggable backends.
- pdf-reader✓Extract text, tables and layout from PDFs and scanned docs.
- transcribeSpeech-to-text with diarization and word-level timestamps.
- slack✓Post, read and react in Slack channels with granular scopes.
- email✓Send and parse transactional email with template support.
The problem
Every agent reinvents the same plumbing.
Web search, a database, code execution, a payment rail — each agent re-wires them by hand, with no shared versioning, no trust, no provenance. Plinth makes capabilities installable.
One command to wire it in
plinth add <tool> resolves the manifest, pins a version, and connects the MCP server to your agent.
Verified on-chain
Every published version anchors an integrity hash and publisher identity on Solana. Tampered builds simply won't resolve.
How it works
From search to running tool in three steps.
Resolve from the registry
Plinth looks up the tool's on-chain record, picks a version that satisfies your range, and fetches its signed manifest.
Verify integrity
The downloaded build is hashed and checked against the anchored hash. Publisher identity is confirmed before anything runs.
Wire into your agent
The MCP server is registered with your runtime and its tools become callable — scoped, metered, and ready.
Ship faster
Stop hand-wiring tools. Install them.
Browse the registry, drop in a capability, and get back to building the agent.