Code-only MCP servers — agent-tools.cloud

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.

ffrwd-cli

github.com/imbcmdth/ffrwd-cli
active

A free package registry for video pipelines: install recipes and WebAssembly filters, written in SQL and compiled to ffmpeg commands you can read.

Apache-2.0
swisseph-wasm

github.com/kuntayerkus/swisseph-wasm
updated this year

Swiss Ephemeris 2.10.03 compiled to WebAssembly. High-precision planetary positions, house systems, eclipses and fixed stars for Node.js, browsers, Deno and Bun. 230 KB brotli, works with no data files.

AGPL-3.0 ★ 1
lean-agentic

github.com/agenticsorg/lean-agentic
active

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
amv-mcp-hub

github.com/uno-km/amv-mcp-hub
active

MCP server hub for Node.js and Android Termux: host shell/Python/JS execution, WASI WebAssembly runner, vector search and text utilities over stdio, plus an optional token-protected HTTP/WebSocket bridge.

npm Apache-2.0
codedotnet

github.com/hunk7/codedotnet
active

🚀 Local-first C# Platform, ✍️ Write, compile and run C# in the browser with .NET 10 WebAssembly + Roslyn, 🔌 expose it to AI agents via an MCP server, and 🤖 add an optional local AI assistant (Ollama) with RAG to review, debug, explain and test your code. 🔒 No account, No Install, No Server, No Cloud ~ Run Everything Locally.

MIT
clingo-mcp

github.com/newjerseystyle/clingo-mcp
updated this year

MCP server for interacting with Clingo ASP solver via WebAssembly

npm MIT
hyper-mcp

github.com/hyper-mcp-rs/hyper-mcp
active

📦️ A fast, secure MCP server that extends its capabilities through WebAssembly plugins.

Apache-2.0 ★ 882
wassette

github.com/microsoft/wassette
active

Wassette: A security-oriented runtime that runs WebAssembly Components via MCP

MIT ★ 977
enterprise-code-intelligence

github.com/Luiguard/enterprise-code-intelligence
active

Multi-tenant, RBAC-protected Enterprise Code Intelligence microservice with TypeScript Compiler API AST parsing & WebAssembly SQLite Graph Memory.

NOASSERTION
limoni

github.com/thebanri/limoni
active

Terminal UI engine for Go that tests can click and AI agents can drive (MCP). Zero-allocation rendering, immediate mode + Elm architecture, 3D, images, charts, accessibility, WebAssembly.

Apache-2.0 ★ 194
gridpath

github.com/pixelsmasher13/gridpath
active

Real Excel files in your web app and your AI agent: an embeddable spreadsheet with a Rust/WebAssembly formula engine, in-place .xlsx saves, and an MCP server.

Apache-2.0 ★ 11
bicmath

github.com/nikoma/bicmath
active

BicMath is a modular Rust computation engine for mathematics, statistics, finance, and optimization. Available through MCP, CLI, Rust API, and WebAssembly—with exact arithmetic, explicit precision, and verifiable results.

MIT
spectraprobe

github.com/Ethos6/spectraprobe
active

Original open-source static software analysis toolkit: identify, hash & inspect PE/ELF/Mach-O, WebAssembly, archives (APK/JAR) and JavaScript. CLI, pluggable providers, evidence model & MCP server. Static-only, no cloud.

MIT ★ 2
gridpath

github.com/pixelsmasher13/gridpath
active

Real Excel files in your web app and in your agent: an embeddable spreadsheet with a Rust/WebAssembly engine, in-place .xlsx saves and AI tools, plus an MCP server for coding agents.

npm Apache-2.0
passportsim

github.com/BlackHole1/passportsim
active

Develop and debug FoloToy AI Passport firmware without the device: an ESP32-C3 emulator that runs unmodified ESP-IDF images in the browser (WebAssembly) or on macOS and Windows, with a CLI and an MCP server for AI agents.

MIT ★ 25
vedaksha

github.com/arthiqlabs/vedaksha
active

Rust ephemeris and Vedic astrology (Jyotish) engine for kundli/kundali, panchanga, dashas and vargas, accurate to 0.096″ mean vs JPL Horizons. Python, WebAssembly and 17 MCP tools for AI agents. Clean-room, source-available (BUSL-1.1), no AGPL obligations.

NOASSERTION ★ 4
lasik-agents

github.com/pktq/lasik
active

LASIK (LLM Agent Sight In Kode): restores the sight of AI reverse-engineering agents blinded by BLA. Statically undoes every BLA shield (JS bundles, Electron/ASAR, WebAssembly, Python/.pyc, native ELF/PE/Mach-O, SQLite, models, APK/DEX, JVM, .NET, BEAM, E

npm MIT
solana-vanity

github.com/nirholas/solana-vanity
active

Solana vanity address generator: WASM Ed25519 grinding, exact Base58 odds, proof-of-grind certificates, split-key.

npm Apache-2.0 ★ 7
blockwerk-claude-plugin

github.com/telrikdeboer/blockwerk-claude-plugin
active

BlockWerk plugin for Claude: build, run and analyse block-diagram simulations via MCP

MIT
dev-tools

github.com/dobermanch/dev-tools
active

A growing collection of developer utility tools — available as a CLI, REST API, and MCP server, all powered by a single .NET library.

MIT ★ 4
browser-port

github.com/Abelo9996/browser-port
active

Turn an open-source C/C++ SDL game into a link anyone can play, in one command, or get an honest reason why not.

MIT
frogConvert

github.com/ogfrench/frogConvert
active

frogConvert lets you securely convert between 70+ formats, compress files, and manage your PDFs, right in your browser. Your files never leave your device.

GPL-3.0 ★ 3
remove-ac-sdk

github.com/szp2005/remove-ac-sdk
active

Official zero-dependency Node.js/Python SDK, CLI, GitHub Action & MCP Server for remove.ac (/v1.0/removebg drop-in API)

MIT
bussin

github.com/sgebb/bussin
active

Browser-based Azure Service Bus explorer. Peek, search, edit and resubmit messages with no install and no backend.

npm NOASSERTION ★ 15
web-revive

github.com/Abelo9996/web-revive
active

Bring a dead Flash or Java web game back from its old URL: one command gives you a playable link and a gameplay GIF.

MIT
ephemora-cell

github.com/michaels1011/ephemora-cell
active

Ephemora Cell — The execution layer for untrusted AI-generated code. Fast, capability-based WASM execution with explicit CPU, memory, time, I/O, and filesystem limits.

pypi BUSL-1.1
ameva-mcp-hub

github.com/uno-km/ameva-mcp-hub
active

AMEVA OS: Universal Polyglot WASM & AI Vector MCP Hub. Zero-Install Multi-Language Tool Runtime & Real-Time Dynamic Multi-Repo Subscription Engine.

npm MIT
forthling

github.com/DeSchaker/forthling
active

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
blazedex

github.com/tomasfil/blazedex
updated this year

Blazor/Razor Model Context Protocol server for .NET 10 — indexes your solution via Roslyn, resolves component usages to .razor:line:col. 20 tools for discovery, usage tracing, API introspection, quality lints, and safe edits.

NOASSERTION ★ 1