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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encoder-ai-mcpgithub.com/csoai-org/encoder-ai-mcpupdated this year
Encoder Ai tools for AI agents. Capabilities: encode base64, decode base64, encode url. Built by MEOK AI Labs.
npm MIT -
MCP server for querying and downloading ENCODE Project genomics data directly from Claude
pypi AGPL-3.0-only -
MCP server: encode and decode HTML entities, URL-encoding, and Unicode escapes.
MIT -
encode-query-nexusgithub.com/cici566/encode-query-nexusupdated this year
Best MCP Server for ENCODE Functional Genomics Data 2026 – Search, Download & Analyze Experiments
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MCP server and Claude Code plugin for the ENCODE Project: search, download and analyze ChIP-seq, ATAC-seq, RNA-seq, WGBS, Hi-C and CUT&RUN data with 20 tools, 47 skills and 7 Nextflow pipelines
AGPL-3.0 ★ 20 -
Encode or decode Base64 for text and local files. URL-safe and data-URI options. Local CLI and MCP server.
MIT -
@mukundakatta/base64-mcpgithub.com/mukundakatta/base64-mcpupdated this year
MCP server: encode/decode base64, base64url, hex, and percent-encoding.
npm MIT -
osmpgithub.com/octid-io/cloudless-skyupdated this year
OSMP -- Octid Semantic Mesh Protocol. Deterministic agentic instruction encoding.
pypi Apache Software License -
Pure-Python MCP server for encoding, hashing, and crypto-primitives — computed for real, locally.
GPL-3.0 ★ 2 -
Open-source decoder that identifies an encoded string and unwraps every layer, with an MCP server so your coding agent decodes instead of guessing.
MIT ★ 5 -
vaultbase-mcpgithub.com/AlexeySamosadov/vaultbase-mcpupdated this year
MCP server giving AI agents local encoding tools — base64/hex/url & URL parsing (free), plus JWT-decode & file↔base64 (Pro). Runs locally.
NOASSERTION -
MCP tool server for AI coding agents -- encoding-aware file tools, binary analysis, DAP debugger, SSH/SFTP, process memory, and more
MIT ★ 26 -
@kapilraghuwanshi/dev-tools-mcpgithub.com/kapilraghuwanshi/mcp-serversupdated this year
Zero-config MCP server for developers — encode/decode, hash, UUID, JWT, DNS, IP info, URL tracing, npm lookup and more.
npm MIT -
unicodefyigithub.com/fyipedia/unicodefyiupdated this year
Pure Python Unicode character toolkit -- 17 encoding formats, full Unicode properties, 92 HTML entities, character search, CLI, MCP server, and REST API client.
pypi MIT -
MCP utility toolkit for JSON repair, encoding fixes, format conversion, duplicate detection, batch rename, ZIP archives, checksums, and regex testing
npm MIT ★ 1 -
MCP server for the UCSC Genome Browser: curated hg38/hg19 region tracks (genes, repeats, segmental duplications, phyloP conservation, ENCODE cCREs, splicing variants) and bounded reference sequence.
MIT -
bach-codecommander-mcpgithub.com/lukisch/bach-codecommander-mcpupdated this year
A developer-focused MCP server providing 17 tools for code analysis, JSON repair, encoding fix, import organization, format conversion, diff, and regex testing
npm MIT -
Model Context Protocol server for CyberChef — exposes GCHQ's "Cyber Swiss Army Knife" as AI-agent tools: 504 operations across encryption, encoding, compression and forensics, on MCP protocol revision 2026-07-28
npm GPL-3.0 ★ 34 -
Developer-focused MCP server with 23 tools for Python code analysis, structural editing, JSON repair, imports, encoding, Markdown/PDF export, diffs, and regex testing
npm MIT ★ 4 -
nen-mcp-servergithub.com/DovahkiinYuzuko/nen-mcp-serverupdated this year
[ENG] A Gemini CLI Extension / MCP Server that completely resolves character encoding issues (e.g., Shift-JIS) in Windows CLI environments, enabling AI to accurately parse non-English documents. [JPN] Windows環境の文字化け(Shift-JIS等)を完全に防ぎ、AIが非英語圏のコードや文書を正確に解析できるようにするGemini CLI向けのMCP拡張機能です。
NOASSERTION ★ 1 -
MCP server that lets AI coding assistants read and edit text files in any encoding (Windows-1252, ISO-8859-x, UTF-16, ...) without corrupting them. Language-agnostic. Windows x64.
MIT -
MCP utility toolkit for Claude Code and other agents: JSON repair, encoding fixes, format conversion, duplicate detection, batch rename, ZIP archives, checksums, and regex testing.
npm MIT -
Local code search combining BM25, vector similarity, and cross-encoder reranking. Parses 60+ languages with tree-sitter, runs entirely offline, and returns structured results with file paths, line ranges, and symbol metadata. Built in Rust.
MIT ★ 149 -
devutils-mcp-servergithub.com/paladini/devutils-mcp-serverupdated this year
MCP server with 36 zero-auth developer utilities: hashing (MD5/SHA/bcrypt), encoding (Base64/hex/URL), UUID/password generation, JWT decoding, JSON/YAML/XML formatting, timestamp conversion, network tools (CIDR, IP, DNS), and text utilities.
npm MIT -
jwt-labgithub.com/alishah730/jwt-labupdated this year
jwt-lab – A fast, secure, beautiful JWT CLI tool and MCP server for developers & AI agents. Encode, decode, verify, inspect, audit, and generate keys for JSON Web Tokens.
npm MIT -
MCP server: encode/decode text in base64, base64url, hex, and percent-encoding.
MIT -
Local RAG server for Claude Code, Cursor and other MCP clients: hybrid BM25 + vector search with cross-encoder reranking on by default, 13 MCP tools, 33 file types including code, re-indexing on file changes. One Python process with embedded ChromaDB and FastEmbed ONNX: no Docker, database server or API key; offline after the first model download.
npm MIT ★ 306 -
@mate-tools/mcp-servergithub.com/matetools/mcp-serverupdated this year
Model Context Protocol (MCP) server for mate.tools — exposes 35 utility tools to Claude Desktop, Claude Code, Cursor, Windsurf and any other MCP-compatible AI agent. Includes: count-lines, base64-encode/decode, url-encode/decode, hash, password, password-
npm MIT -
MCP server: phonetic encoding (Soundex, Metaphone).
MIT -
Pure-Python MCP server for encoding, hashing, and crypto-primitives — computed for real, locally.
pypi GPL-3.0-or-later -
MCP server: encode and decode International Morse code.
MIT -
MCP server: encode and decode RFC 4648 base32 (standard and Crockford).
MIT -
Mermaid Online MCP: encode share links and recover Mermaid diagram source locally.
npm MIT -
searXNG-mcpgithub.com/smitkunpara/searXNG-mcpupdated this year
Multi-query web search via SearXNG + dynamic page scraping with browser support + TOON encoding/decoding for LLM optimization
MIT -
HandBrake batch encode via FastMCP — queue transcodes without babysitting the GUI. For Cursor / Claude Desktop.
MIT ★ 2 -
MCP server with 21 tools for things AI is bad at — math, hashing, encoding, date arithmetic, and more.
npm MIT ★ 9 -
cyberbenchgithub.com/cognis-digital/cyberbenchupdated this year
Chainable encode/decode/transform pipeline (base64/hex/rot/xor/url/gzip)
NOASSERTION -
MCP server for complete file control with base64 encoding to bypass JSON parsing issues
npm MIT -
devtoolbox-mcpgithub.com/rih0z/devtools-mcpupdated this year
MCP server providing 25+ developer tools — JSON formatting, encoding, hashing, UUID, JWT, and more. All processing runs locally.
npm MIT -
json-to-csv-convertergithub.com/dancvv/json-to-csv-converterupdated this year
Zed MCP extension: JSON to CSV/Excel and CSV to JSON, with automatic delimiter/encoding/header detection, streaming, progress, row limits, and cancellation
MIT -
A read-only Kubernetes MCP server: list resources, get resource details, retrieve pod logs, discover API resources, and perform base64 encoding/decoding operations - all while maintaining security through read-only access.
MIT ★ 25 -
Multi-engine web search + fetch MCP server (DDG, Brave, Tavily, Google AI Mode) with consensus-merge dedup, local cross-encoder reranking, and Groq synthesis
MIT ★ 1 -
win-shell-mcpactive
AI-native cross-platform command abstraction layer as MCP Server. Deterministic tools replacing raw shell commands, unified minimal JSON output, handles Windows path/encoding/quoting differences.
npm MIT -
bmobot-mcpgithub.com/RockaRhymeLLC/bmobot-mcpupdated this year
MCP server providing 37 developer tools — hash, encode, regex, JSON, SQL, cron, QR codes, UUID, JWT, and more. Works with Claude Desktop and Claude Code.
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Jam with Claude — an MCP server that turns a described beat into a loopclub link. A pure encoder: holds no keys, signs nothing.
Apache-2.0 -
Deterministic, non-generative image transform MCP server for AI agents — straighten, crop, mask, layer, and encode with reproducible recipes and immutable originals.
MIT -
Semantic search over local folders of code and docs for any MCP client, with the Motherlode code-search encoder running on your CPU.
NOASSERTION ★ 1 -
Semantic search over the folders on your machine for any MCP client, with the Motherlode code-search encoder running locally.
npm BUSL-1.1 -
Stateless utility tools for AI agents — URL/DNS/x402/JWT/encoding/parsing — local-first, deterministic, no API keys.
pypi MIT -
Everyday SRT/VTT subtitle work over MCP, fully offline: exact-fraction resync, shift, convert, dry-run repair, honest encoding detection (cp1254 included), and a translation contract where your AI is the translator.
MIT -
embspec-mcpgithub.com/MukundaKatta/embspec-mcpupdated this year
MCP server: embedding pipeline ops + drift detection for production RAG. Assert query encoder matches index manifest; compute retriever stability between two index versions. Wraps embspec.
MIT -
@cablate/memory-lancedb-mcpgithub.com/cablate/memory-lancedb-mcpupdated this year
MCP server for LanceDB-backed long-term memory with hybrid retrieval (Vector + BM25), cross-encoder rerank, multi-scope isolation, and memory lifecycle management
npm MIT -
MCP server for LanceDB-backed long-term memory with hybrid retrieval (Vector + BM25), cross-encoder rerank, multi-scope isolation, and memory lifecycle management
MIT -
RAG proof of concept: hybrid retrieval (pgvector HNSW + lexical RRF), cross-encoder reranking, dual embeddings (OpenAI + local GPU/CPU), and an MCP server — Python, PostgreSQL, Docker (NVIDIA/ROCm)
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Download manager for macOS, Linux and Windows: many connections per file, mirrors, a queue and scheduler, HLS/DASH streams joined without re-encoding, and a browser extension.
MIT -
A read-only Kubernetes MCP server: list resources, get resource details, retrieve pod logs, discover API resources, and perform base64 encoding/decoding operations - all while maintaining security through read-only access.
npm MIT -
@mukundakatta/embspec-mcpgithub.com/mukundakatta/embspec-mcpupdated this year
MCP server: embedding pipeline ops + drift detection for production RAG. Assert query encoder matches index manifest; compute retriever stability between two index versions on a frozen probe set.
npm Apache-2.0 -
mcp-crypto-toolsgithub.com/rog0x/mcp-crypto-toolsupdated this year
MCP server for cryptography: hash (MD5/SHA), encode/decode (Base64/URL/hex), UUID/nanoid generator, password tools, JWT decoder Install: npx @rog0x/mcp-crypto-tools
MIT -
pipecat-docs-mcpgithub.com/DTufail/pipecat-docs-mcpupdated this year
MCP server for Pipecat voice AI framework documentation. Search 6,936 chunks from 317 pages via Claude Desktop or Cursor. Hybrid BM25 + FAISS retrieval with cross-encoder reranking. 78.8% MRR, 93% Recall@5, 36ms avg latency.
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A retrieval engine that refuses to guess. Register git repos and URLs, get grounded, cited answers over MCP and REST. Hybrid search, cross-encoder rerank, Postgres + pgvector.
MIT