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.
-
dev-utils-mcpgithub.com/yifanyifan897645/dev-utils-mcpupdated this year
MCP server with 12 essential developer utilities — UUID, Base64, hashing, JWT decode, JSON diff, regex test. Zero config.
npm MIT -
MCP (Model Context Protocol) server for confdiff — lets AI agents diff config & structured-data files (JSON/YAML/TOML/INI/.env/.properties/XML/CSV) by meaning, not text. Maintained by an AI agent.
npm MIT -
ls for diffs: a folder-scoped, read-only side-by-side diff viewer - terminal, desktop GUI, --json and an MCP server for AI agents
MIT ★ 1 -
AI-powered json ai MCP server for agents. Supports validate json, transform json, diff json. By MEOK AI Labs.
pypi MIT License -
mcp-json-toolsgithub.com/rog0x/mcp-json-toolsupdated this year
MCP server for JSON/data tools: validate against schema (Ajv), diff objects, transform/pick/flatten, CSV↔JSON, YAML↔JSON conversion. Install: npx @rog0x/mcp-json-tools
MIT -
Semantic diffs of JSON, YAML, TOML, CSV, .env and INI over MCP: keyed list matching with move detection, verified RFC 6902 patches, tolerance, streaming CSV diffs. Read-only.
MIT -
vaultjson-mcpgithub.com/AlexeySamosadov/vaultjson-mcpupdated this year
MCP server giving AI agents local JSON tools — validate, format, query-by-path (free), plus deep-merge & diff (Pro). Data never leaves the machine.
NOASSERTION -
compare-mcp is a stdio Model Context Protocol server written in Go. It offers a read-only, typed layer over the host diff(1): clients get structured JSON—unified diff text, parsed hunks, directory deltas, and classifications—instead of scraping a shell session
Apache-2.0 -
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 -
devtoolkit-mcpgithub.com/emtyty/devtoolupdated this year
29 developer utilities as an MCP server — JSON repair, SQL format, hash, encode/decode, UUID, regex, CSV, subnet calc, diagram generation, git diff parsing, DB schema parsing, JSON schema validation, and more. No API keys. Runs locally.
npm MIT -
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 -
Local JSON schema diff CLI + MCP client for API/MCP drift — offline compare_json, hosted monitoring connector for Pro/Team.
MIT ★ 2 -
mcp-all-toolsgithub.com/hlteoh37/mcp-all-toolsupdated this year
All-in-one MCP server with 80+ developer tools — devutils, API, text, math, datetime, calculator, JSON diff/query, SQL format, epoch convert, AES encrypt/decrypt, RSA keygen, scrypt hash, regex replace, nanoid, CSV/JSON, hex encode, Unicode tools in a sin
npm MIT -
KG-SSOT: verifiable knowledge graphs in plain text. A formal contract for .kg.yaml and .kg.json (JSON Schema) with a conformance suite, reference readers (Python, JavaScript), CI gate, store, query, diff and MCP server. Release mirror, Apache-2.0.
npm Apache-2.0 -
dev-utils-mcpgithub.com/yifanyifan897645/dev-utils-mcpupdated this year
MCP server with 6 essential developer utilities — UUID, Base64, hashing, JWT decode, JSON diff, regex test. Zero config, zero API keys.
MIT -
bluefieldgithub.com/danielvhofmann/bluefieldupdated this year
Local first web scraper that turns any URL into clean Markdown or JSON and signs every capture with an offline verifiable Ed25519 provenance manifest called BPM. Git like history and diff for web data, plus an MCP server so AI agents can prove what they read. TypeScript monorepo, AGPL-3.0 engine, Apache-2.0 spec and SDKs.
AGPL-3.0 ★ 1 -
AST CLI for AI agents that parses 16 languages with tree-sitter and reports symbols, references, diff impact, API changes, and dead code as JSON or TOON
MIT ★ 3 -
Local MCP server with exact file tools for AI assistants: compress, resize and convert images (HEIC, WebP, AVIF), strip EXIF/GPS metadata, make and read QR codes, exact text counts, diff, JSON validation. Files never leave your computer.
MIT -
shipi18nno update data
Translation QA for locale files — the validator tools need no API key and make zero model calls. **Tools:** check_locales, check_glossary, check_placeholders, diff_locales, review_locales, list_languages (all keyless) + translate_json, translate_file (bring your own Anthropic/OpenAI key). `review_locales` hands translation pairs and judging criteria back to your agent, so meaning-level review runs on the model your client already has. Supports JSON, Flutter `.arb`, Apple `.xcstrings`. Apache-2.0, no account, no telemetry. Benchmark: https://shipi18n.com/benchmark · Docs: https://shipi18n.com/docs/mcp/setup
smithery -
Rust-native context compression for Claude Code, Codex & MCP agents: filters & compresses noisy tool output (tests, diffs, logs, JSON, provider traffic) before it reaches the LLM — fewer wasted tokens, full evidence recoverable. Local-first, Apache-2.0. Pairs with Code Explorer.
Apache-2.0 ★ 4 -
A loupe for large JSON — lossless, local-first viewer, differ, query tool, and MCP server for AI agents
npm MIT ★ 2 -
Local MCP tools for document search, reusable document profiles, spreadsheet SQL, JSON snapshot changes, resumable API batches and retry-loop checks. Built by AVRG3.
MIT -
agent-core-mcpactive
Deterministic computation tools for AI agents: exact diffing, hashing, JSON querying, calendar arithmetic, regex extraction with ReDoS analysis, CSV parsing, similarity scoring, unit and base conversion. Zero dependencies, zero network, read-only.
npm MIT -
utilsforagents-mcpupdated this year
MCP server for UtilsForAgents with eight paid x402 utility tools plus one free feedback tool, with Base or Solana payer support.
npm MIT -
MCP server for the Specwise API: OpenAPI validation and breaking-change diffs for coding agents.
MIT -
The missing reliability layer for spreadsheet work in LLM agents. Read, write, diff, validate, and analyze .xlsx files end-to-end — with merged cells, formulas, named ranges, conditional formatting, pivots, and charts preserved.
npm MIT -
MCP server that lets AI agents load an OpenAPI spec, call real endpoints, validate responses against the documented schema, run a full contract-test pass, diff two spec versions for breaking changes, and health-check a set of endpoints.
npm MIT