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.
-
CLI + MCP tool to quickly convert media files to base64 with helpful output options
MIT ★ 3 -
MCP server that converts images to base64 data URIs for LMStudio compatibility
MIT -
Encode or decode Base64 for text and local files. URL-safe and data-URI options. Local CLI and MCP server.
MIT -
🚀 Base64编码解码MCP服务器:支持文本📝和图片🖼️转换,提供工具🛠️、资源和提示模板,完美集成到AI工作流程🤖
★ 3 -
@mukundakatta/base64-mcpgithub.com/mukundakatta/base64-mcpupdated this year
MCP server: encode/decode base64, base64url, hex, and percent-encoding.
npm MIT -
MCP server: encode/decode text in base64, base64url, hex, and percent-encoding.
MIT -
jwt-base64-decoder-mcpgithub.com/vinkius-labs/jwt-base64-decoder-mcpupdated this year
Vinkius Edge high-performance Model Context Protocol (MCP) server for decoding JWT tokens and Base64 strings.
★ 3 -
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 server for extracting and converting images to base64 for LLM analysis
npm MIT -
MCP server for complete file control with base64 encoding to bypass JSON parsing issues
npm MIT -
mcp-server-devutilsgithub.com/ofershap/mcp-server-devutilsupdated this year
Zero-auth MCP server with everyday developer utilities: base64, UUID, hash, JWT decode, cron, timestamps, JSON, regex
MIT ★ 4 -
base-converter-mcpgithub.com/vinkius-labs/base-converter-mcpupdated this year
Vinkius Edge high-performance Model Context Protocol (MCP) server for base conversions (hex, binary, base64).
★ 3 -
mcp-server-devutilsgithub.com/ofershap/mcp-server-devutilsupdated this year
Zero-auth MCP server with everyday developer utilities: base64, UUID, hash, JWT decode, cron, timestamps, JSON, regex
npm MIT -
@dpm-tools/mcp-devkitgithub.com/jeffereychown-max/mcp-devkitupdated this year
MCP server with 15 zero-config developer utilities: UUID, hash, base64, JWT, JSON, YAML, cron, timestamp, color, slugify, password, lorem.
npm MIT -
Comprehensive base64 CLI with 8 output formats, MCP server for AI agents, MIME detection, metadata extraction, data URIs, and modern TypeScript architecture. Beyond basic conversion.
npm MIT -
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-devtools-servergithub.com/kira-autonoma/devtools-mcpupdated this year
Swiss Army knife MCP server — 20+ developer utilities (base64, JWT, UUID, hash, QR codes, regex, timestamps, colors, and more) with zero API keys required
npm MIT -
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 -
Local-first developer CLI and stdio MCP server for Toolars: hash, Base64, JWT decode, UUID/ULID, timestamp, cron and URL encode/decode. Zero runtime dependencies, no network access, no telemetry.
npm MIT -
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 -
@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-devutilsgithub.com/hlteoh37/mcp-devutilsupdated this year
MCP server with 45 developer utilities (16 free + 29 pro). Free: UUID, hash, HMAC, base64, timestamps, JWT decode, random strings, URL encode/decode, JSON format, YAML/JSON convert, regex test, cron explain, color convert, HTTP status, slugify, HTML escap
npm MIT -
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 -
pdf-merge-ai-mcpgithub.com/csoai-org/pdf-merge-ai-mcpupdated this year
Pdf Merge Ai Mcp: merge info (Plan a PDF merge operation. Provide file descriptions as JSO); split info (Plan a PDF split operation. Split spec examples: 'every 5' (); get metadata (Extract or generate PDF metadata. Provide either base64-enco); validate pdf (Validate PDF structure from base64-encoded header bytes. Che). pip install pdf-merge-ai-mcp.
pypi MIT License -
MCP server: generate random strings (hex, alphanumeric, base64, custom alphabet).
MIT -
mcp_imagesgithub.com/LiveBigOrange/mcp_imagesupdated this year
MCP 图片分析服务器 — 在 AI 工具中直接分析本地图片、剪贴板截图或 Base64 图片数据
MIT ★ 1 -
MCP server: hash text with sha256/sha512/sha1/md5 and hex/base64/base64url output.
MIT -
cyberbenchgithub.com/cognis-digital/cyberbenchupdated this year
Chainable encode/decode/transform pipeline (base64/hex/rot/xor/url/gzip)
NOASSERTION -
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 -
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 -
Buy shipping labels across carriers in two paid API calls—rate-shop, purchase, and receive base64 PDFs instantly.
Apache-2.0 -
Hash text or local files with SHA-256, SHA-1, MD5 and SHA-512. Hex and Base64. Local CLI and MCP server.
MIT -
mcp-view-imagegithub.com/TheFabFab/mcp-view-imageupdated this year
Model Context Protocol (MCP) server that provides image viewing capabilities for AI agents. Accepts images via file path or base64 data URI and returns them in a standardized multipart format with metadata.
MIT ★ 1 -
@mseep/llm-vision-mcpupdated this year
An MCP server that gives vision capabilities to any LLM. It accepts images (file paths, URLs, or base64) and sends them to a vision-capable LLM, returning text descriptions that non-vision LLMs can use.
npm MIT -
lazy-media-mcpgithub.com/leaf76/lazy-media-mcpupdated this year
Local MCP server: compress images/videos and prepare media for AI vision agents (paths only, no base64). Claude, Codex, and other MCP clients.
MIT ★ 1 -
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 -
sovereign-mcp-serversgithub.com/ryudi84/sovereign-mcp-serversupdated this year
11 MCP servers with 33 tools for AI agents. JSON, Regex, Hash, JWT, Base64, Timestamp, Meta SEO, Color, Shadow, Gradient, README generation. Built by Taylor (Sovereign AI).
★ 1 -
MCP server that converts PDF, DOCX, PPTX, XLSX, HTML and EPUB documents — from a URL or base64 — into clean Markdown, with table extraction, full-text search and OCR for scanned files. No API key required.
pypi AGPL-3.0-or-later -
24 deterministic text tools for AI agents — URL sanitizer, JSON/SQL/YAML formatters, hex/base64/hash, token counter, cron explainer, and more. Runs locally over stdio; no API key, no network.
npm MIT -
@cleanor/mcpgithub.com/cleanor-app/cleanor-mcpupdated this year
Cleanor MCP server for AI builders: optimize/convert images, cited storage & image-format data, QR codes, and deterministic dev utilities (hash, uuid, base64, jwt decode, json, color, slugify, count) LLMs get wrong. Run locally over stdio, or use the host
npm MIT -
Stop prompt injection in AI inbox triage and chat agents. Scans emails, web pages and messages for instructions aimed at the AI (hidden HTML, invisible Unicode, base64, fake system markers), fences untrusted content for the prompt, and gates the tool call
npm MIT -
yourimageshareno update data
yourimageshare-mcp connects Claude, ChatGPT, and other MCP-compatible agents to YourImageShare's free image and video hosting API. Ask an agent to upload a screenshot and it gets back a shareable link — no manual copy-paste-upload loop. Tools: upload_image (from a local path or inline base64 — images up to 200MB in JPG, PNG, GIF, WEBP, AVIF, BMP, TIFF, or HEIC, or MP4/WEBM/AVI video — with optional auto-expiry from 60 seconds to 30 days), list_uploads (paginated, newest first), and delete_upload. Requires a free YourImageShare API key from yourimageshare.com/my-account (API tab). No account is needed to use the hosting service itself, but the MCP server needs a key to act on your behalf.
smithery -
Pure-Python MCP server for encoding, hashing, and crypto-primitives — computed for real, locally.
GPL-3.0 ★ 2 -
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 -
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 -
Chain string transformations into visual pipelines with live previews — 246 utilities as a web app, CLI, HTTP API, MCP server and browser/VS Code extensions.
npm MIT ★ 4 -
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 -
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 -
A Rust CLI and MCP server for X.509 certificate analysis, format conversion, and key verification. Reads certificates from PEM files or HTTPS endpoints. Validates TLS connections, checks revocation status, converts between PFX and PEM formats and integrates with AI-powered IDEs via the Model Context Protocol (MCP) and Vault.
NOASSERTION ★ 4