MCP Servers

Autonomous AI developers on your own infrastructure: assign a task, get a pull request.

Document-to-Markdown MCP server that converts PDF, Office and HTML into LLM-ready Markdown.

Free WCAG 2.2 rule reference; with an API key, see what to fix on your sites and new checks.

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mcp-prowl

opcastil11

Discover, evaluate, and compare SaaS APIs. Agent-verified scores and metrics

Check an MCP endpoint resolves: liveness, live tool list, schema drift. Free

Live, sourced changes feed: Apple, Google Play, Android, GitHub, Vercel, Cloudflare, Firebase, more

x402 micropayment-powered developer tools: screenshots, AI analysis, PDFs, code scanning

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Orbis API Marketplace

OrbisAPI

Browse, subscribe to, and call 3,000+ APIs autonomously. x402 USDC pay-per-call on Base

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fascia-mcp-server

orcar-studio

Expose Fascia-deployed tools and entity schemas to AI agents via MCP

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mcp-package

OrdersOfMagnitudeLLC

MCP server for OOM x402 search 1,000+ pay-per-call API endpoints

Grounded, citable answers to tech questions from O'Reilly's library. Requires Expert MCP access

Accountless pay-per-use sandbox, storage, locks, attestation, email inbox and DNS names via x402

Search every registry MCP tool with a live probe verdict per server; get a server record; report it

Search and read the Celo developer documentation

Official DayPilot references, release packages, CSS themes and verified starter projects

Security, bug, performance and refactor audit for Python. Returns a 0-10 score and an MD report.

AI electronics blueprint generator: BOM, wiring, firmware, renders for Arduino, ESP32 and RPi

Will a QLoRA fine-tune of gemma-3-4b-it fit your GPU? Verdicts from measured AMD and NVIDIA probes

Build, edit, host, and publish websites from AI assistants. Setup: https://mcp.orivox.org/

P31 governance: validate constitutions, prove gates fail, compose specs, reconcile timelines.

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oasis-mcp

p31ca.org

Agent-native CLI: provenance, cost governance, and execution contracts for AI agents

Pay-per-call data APIs for AI agents. USDC on Base via x402. 33 tools, no signup

Paid AI utilities for web comparison, code checks, document extraction, security, and research

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R3

r3js.org

Build 3D web apps: physics, audio, music, Blender import. Live edits, undo, versions, publishing

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Runlog

runlog.org

Verified registry of third-party-system knowledge — the external-dependency layer for agent memory

Free deterministic PDF, Markdown, citation, invisible-character, and formatting cleanup for agents

Recovers malformed LLM JSON. MCP build: 218/300 on MALFORMED-300 (library build 282/300)

One connector for 15,000+ MCP servers plus your team's private MCPs, from any AI client

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Website Starter

websitestarter.org

Create Markdown instructions for AI agents to build, deploy, and maintain an Astro website

Search independent software the big engines bury: indie apps, open-source repos, and dev tools

Compiles ASN.1 schema definitions into executable source code like Python and Rust

Deterministic JSON Schema validation with exact violations and conservative type normalization

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chartwire

outturndev

Generate production-ready chart code (Recharts, Chart.js, ECharts, Plotly) from a prompt

MCP server giving AI agents access to 40+ APIs: geo, crypto, screenshots, DNS, and more

Secure code execution sandbox for Claude — run Python, JavaScript and shell commands

Deploy forms and sites to live URLs from AI conversations with automatic form capture

Zero-config AI context generation and code quality toolkit with Claude Code Agent Mode support

Transpile Rust code to POSIX-compliant shell scripts with formal correctness guarantees

Paid x402 MCP utilities for AI agents on Base: JSON, HTML, CSV, hashing, attestations

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Webscope

partprogramming09

Short project answers for coding agents: grouped search, one symbol per read, the project's scripts.

Strapi codebase intelligence for AI agents (not content CRUD): real UIDs, schemas, refs, refactors

PDF, Word, PowerPoint, Excel, HTML, EPUB to Markdown: OCR, page ranges, tables, RAG chunking

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Genvernium Public Discovery

paxton888

Public read-only MCP server for Genvernium product and developer resources

Find Power Apps PCF controls, read their docs, and validate pcfhub.json manifests.

B2A2H MCP server — AI agent app store. Auto-discover and recommend MCP servers for any project

AI agent vision for Sentry error tracking — with ROI measurement. perceptdot.com

Read-only MCP server exposing the dsh-plugin-certification registry for DeepSeek Harness plugins

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Perseus Ledger — verifiable, hash-chained event provenance

Perseus-Computing-LLC

Verifiable, hash-chained event provenance for autonomous systems. Local-first, MIT. 5 MCP tools

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Perseus: MCP server and live context engine

Perseus-Computing-LLC

Live context MCP server: resolves git, services, and tests into agent context. Local-first, MIT.

Search and discover any API using natural language. 163+ providers with auto-discovery

Deterministic SHA, HMAC, Base64 and JWT decode tools with prepaid direct-USDC API credits on Base

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math-to-code-mcp

phpranga

Math MCP server for primality, factorization, Java templates, and integer multiplication

Phrase MCP server: language intelligence platform for translation, terminology, and quality

Persistent codebase intelligence that gives AI assistants memory across sessions

Find source-linked AI tool recipes and retrieve complete, reproducible run kits

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Kiosk Builder

pirumpi

Build and manage airline self-service kiosk apps — styling, pages, CMS, and CUSS2

Authorized security scans, evidence, fix prompts and retests for AI-built web apps.

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ITEON MCP Server

iteon.pl

Polish software house B2B: 5 public + 7 OAuth 2.1 private MCP tools (AI estimate, draft, risk).

Search the Plugolis directory of MCP servers and step-by-step fixes for common MCP errors

Build, change, check and publish your Spark sites and apps from your AI assistant