MCP servers that ship as code — a repository or a package you install and run locally (usually over stdio). They have no hosted endpoint, so we cannot probe or grade them: instead each one shows its repository, install command, license, stars and when it was last updated.
Collected from GitHub repositories and npm, PyPI, Cargo, Go, Maven, NuGet and RubyGems packages tagged as MCP servers, the official MCP Registry, Docker's MCP catalog, ModelScope, Baidu MCP World, Cline and other public directories; one entry per repository. A server that also offers a hosted endpoint is listed under Remote instead. These entries are not counted in our reachability, verification or readiness statistics.
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A MCP server exposing lean-package-validator commands as tools.
MIT ★ 1 -
A minimal MCP local server for Lean Mathlib 4 Documentation Search Implemented using Python
MIT ★ 3 -
lean-proof-auto-mcpgithub.com/padieul/lean-proof-auto-mcpupdated this year
An MCP server for deterministic probing and search of Lean 4 proof automation (Aesop / Grind).
MIT -
linear-mcp-leangithub.com/wiklob/linear-mcp-leanupdated this year
Self-hosted MCP server wrapping Linear's GraphQL API with response-shape control — lean reads, minimal write acks, drop-in tool names.
npm MIT -
lean-local-search-mcpgithub.com/dududuguo/lean-local-search-mcpupdated this year
MCP server for fast local Lean and Mathlib theorem search with tree-sitter indexing and proof probes
MIT ★ 1 -
Self-hosted Linear MCP server with response-shape control — lean field-trimmed reads, minimal write acks, drop-in tool names. Built for token-frugal LLM agents.
npm MIT -
A token-lean MCP memory server: a knowledge graph your AI agent can search without reading the whole thing. Drop-in replacement for @modelcontextprotocol/server-memory.
npm MIT -
High-performance WebAssembly theorem prover with dependent types, hash-consing (150x faster), Ed25519 proof signatures, MCP support for Claude Code, AgentDB vector search, episodic memory, and ReasoningBank learning. Formal verification with cryptographic
npm Apache-2.0 -
A token-lean MCP memory server for AI coding agents: a knowledge graph your agent can search without reading the whole thing. Drop-in replacement for the reference memory server.
npm MIT ★ 3 -
LeanCTX is the Context Gateway for AI Systems. Select task-relevant context, apply supported controls, connect local knowledge and inspect recorded evidence. Open-source Engine: CLI, MCP, hooks and supported proxy paths.
pypi Apache-2.0 ★ 3,951 -
LeanKG: Stop Burning Tokens. Start Coding Lean.
Apache-2.0 ★ 222 -
A native desktop IDE for Lean 4 on macOS, Windows and Linux. Every proof re-checked by Tenet, an independent Lean 4 kernel. An MCP server for AI assistants, with Git and GitHub built in.
MIT ★ 8 -
Fast Lean 4 proof feedback for coding agents. CLI, Python library, and MCP server with warm LeanInteract sessions and cached env reuse.
MIT ★ 7 -
Deterministic strategic-planning frameworks (SWOT, 4Ps, Lean Canvas, decision matrix) as a local MCP server. No API keys, no network calls. Pro unlocks 8 more frameworks.
npm MIT -
mathlas-mcpgithub.com/archerkattri/mathlasupdated this year
A tool FOR an AI (no API key, no LLM): search existing math over a 3.7M-doc index + airtight numeric/Lean verification + mathlib search (Loogle/LeanSearch) + OEIS/PSLQ identification + needs<->guarantees scaffolds, served over MCP.
pypi Apache Software License -
umami-mcp-servergithub.com/Macawls/umami-mcp-serverupdated this year
A lean MCP Server for Umami analytics
MIT ★ 35 -
A lean browser interface for AI agents.
MIT ★ 18 -
A lean browser interface for AI agents: web pages as short numbered text.
npm MIT -
Session Intelligence MCP Server - Lean meta-tool pattern with 95% context reduction
MIT -
Token-lean MCP server for Figma: read designs as compact text, render only on demand
npm MIT -
Ultra-lean, scope-aware code search for LLMs and developers
npm Apache-2.0 ★ 1 -
Lean Gmail MCP server with auto authentication support (maintained fork of GongRzhe/Gmail-MCP-Server)
npm MIT -
Token-lean browser MCP server: test local apps freely, browse other sites only after the user allows them
npm MIT -
Lean MCP server for local/remote shell access, background jobs, and file read/write/edit. Benchmarked 37–90% fewer tokens than Desktop Commander across 11 tasks.
MIT ★ 1 -
Fast, token-lean MCP server for Apple Mail on macOS — reads Mail's local index directly, zero idle CPU
MIT -
Lean Ghidra MCP server for clean-room reverse engineering: indexed decompilation, small agent context, dirty/clean spec separation.
MIT ★ 1 -
Fast, lean MCP server that lets Claude Code and Codex ask your Google NotebookLM notebooks questions: cited answers, without loading your docs into context.
★ 1 -
claude-code-sshgithub.com/hunchom/claude-code-gitupdated this year
MCP server giving Claude Code 51 typed SSH tools across your server fleet. Pooled connections, per-user gated, context-lean output.
npm MIT -
Token-lean, ref-stable, privacy-first browser protocol for AI agents (core + Playwright/CDP driver + MCP server).
npm MIT -
Drive a live Blender with Claude: in-Blender chat on your subscription + token-lean MCP ops for Claude Code
GPL-3.0 ★ 4 -
mailpouch — lean, permission-gated MCP access to Proton Mail via Proton Bridge, with up to 86 tools, resources, and prompts.
npm MIT -
Code intelligence for agents: find the code that matters and keep your context window and tokens lean.
Apache-2.0 ★ 163 -
Token-lean MCP server for the Pixabay image & video API — slim results, 24h cache, free pagination, download-to-server with attribution. Stdlib-only core.
MIT ★ 1 -
Unofficial lean MCP server for Yandex Tracker: 9 tools, ~1.2k tokens of tool definitions (official: ~24.8k), compact answers, one-command setup.
MIT -
Airtight math tools an AI uses over MCP — 3.7M-theorem search, PSLQ constant ID, OEIS, real Lean kernel checks, applicability checklists. No LLM inside, no API key.
Apache-2.0 ★ 13 -
claude-code-sshgithub.com/hunchom/claude-code-sshupdated this year
MCP server giving Claude Code 51 typed SSH tools across your server fleet. Pooled, gated, context-lean — stop being the middleman.
MIT ★ 2 -
Read-only Microsoft Teams CLI and MCP server for AI agents: read and search your chats and channels with delegated permissions. JSON or token-lean Markdown.
MIT -
Turn PDFs, Office files and scans into token-lean Markdown for LLMs and coding agents. Local-first: web app, desktop, CLI, MCP server, Claude Code & OpenCode hooks.
Apache-2.0 -
mare-browser-mcpgithub.com/emadklenka/mare_browser_mcpupdated this year
Lean, LLM-first browser automation MCP server. Gives Claude, OpenCode, or any MCP client a real browser to navigate, interact with, and debug web apps.
npm MIT -
🤖 AI SRE - Intelligent Site Reliability Engineering Toolbox. Lean containerized CLI toolbox for AI-powered Kubernetes cluster remediation via MCP Server API. Perfect for N8N workflow integration.
MIT ★ 1 -
engramgithub.com/staticroostermedia-arch/engramupdated this year
Geometric agent memory for Agents: 8-tool lean contract, harness injection at wake, session handoff. 79 MCP tools. Not a vector DB. Rust + MCP.
AGPL-3.0 ★ 21 -
vibecoding-with-closed-eyes-on-sofagithub.com/PennyBurden/vibecoding-with-closed-eyes-on-sofaactive
静默改代码，张嘴说人话 · Close your eyes, lean back, and let your AI agent code while you talk like a boss 🛋️
MIT ★ 1 -
contextive-mcp-servergithub.com/BjornMelin/contextive-mcp-serverupdated this year
A lean, multi-provider MCP server that unifies LLM access. Token-efficient tools, composable workflows, and multi-model routing via Vercel AI SDK. Works with Claude, ChatGPT, Cursor & more.
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Generate, preserve, and verify lean AGENTS.md, RUNBOOK.md, and machine-readable repo context for AI coding agents.
MIT ★ 5 -
Deterministic strategic-planning frameworks (SWOT, Porter's, PESTLE, OKRs, Lean Canvas) as a local MCP server. 12 tools, no API keys, no network calls. Works in Claude, Cursor, OpenCode.
npm MIT -
Connect Claude Code to AgentsChat — AI Agent social network. Core tools stay lean while extended tool groups load on demand for lower token overhead and cleaner role-specific context.
npm Apache-2.0 -
agentchat-mcpgithub.com/swswordholy-tech/iosdevupdated this year
Connect Claude Code to AgentChat — AI Agent social network. Core tools stay lean while extended tool groups load on demand for lower token overhead and cleaner role-specific context.
npm MIT -
Zero-trust L0-L5 verification gateway in Zig 0.17: native Z3 proof-DAG checker, Belnap B4 logic, 42 Lean 4 theorems (0 sorry), 8-lane SIMD BLAKE3 (.kimg) & MCP server.
NOASSERTION ★ 13 -
A lean Forth-2012 system in Rust, thriving on a two-stack diet. Sandboxed, with a dependency-free core. Runs in your browser, in your terminal, from Python and for AI agents through MCP.
MIT -
🦛 A hippocampus for your AI. Long-term memory for Claude & any MCP client, stored as Markdown in your own GitHub repo: hybrid semantic search, knowledge graph, auto-memory, compaction-proof, token-lean.
MIT ★ 1 -
The model proposes, deterministic code disposes, a human signs. Content-addressed envelopes, hash-chained audit, signed approval — for ledgers, Lean proofs, manuscript claims, reproductions, benchmarks, peer review. Conformance-tested; byte-compatible with @kernel.chat/kbot-finance.
MIT -
fusion-mcp-hubgithub.com/KirtiJha/fusion-mcp-hubupdated this year
Solve the MCP token bloat problem. Build lean, custom MCP servers with only the tools you need from 300+ available tools. Reduce LLM costs and hallucinations. Includes CLI, WebSocket proxy, AI-powered recommendations, and interactive playground.
MIT ★ 2 -
Index codebases into a local knowledge graph to provide accurate context for AI coding tools through a direct MCP server connection.
★ 1 -
Small native Markdown editor for macOS 27 that renders in place. Plain files, optional AI (Apple Intelligence, Anthropic, OpenAI, OpenAI-compatible servers) and an MCP server.
MIT ★ 3 -
Plan, apply and roll back changes to a production ontology, with a blast radius report and a proof an auditor can re-check.
pypi MIT ★ 2,904 -
The live, agent-readable frontier of AI mathematics: open problems, AI attempts, solution claims, verification, replay candidates, Skill and MCP.
MIT ★ 4 -
A stand-alone Mathematica-style symbolic math system: a from-scratch Rust kernel (exact arithmetic, pattern matching, CAS) plus a Python web notebook with SVG plots, an HTTP API, and an MCP server. No external crates or pip packages.
MIT -
telosgithub.com/nocoder26/telosupdated this year
The AI that asks why. A Claude Code plugin that refuses to let founders write product code until they've validated with real customers. 13 skills (concierge onboarding, adversarial customer roleplay, optional gbrain bridge) + brain MCP. Free, MIT.
MIT