Developer Tools MCP Servers

SkeletIQ

com.skeletiq

Verified

Hand a released SkeletIQ architecture to a coding agent: brief, build order, drift check.

Render, validate, encode/decode PlantUML diagram-as-code; 22 diagram types. Free, no auth.

Bible translations, books, chapters, verses, and search

Documentation for the Spektralwerk spectrometer SCPI API as a streamable HTTP MCP Server

Signvoy

com.signvoy

Verified

Send documents for e-signature, track signing status, and download signed PDFs. No API key required.

Access Siglume API Store tools and external MCP Router servers.

Search verified Claude Code plugins and skills; fetch portable SKILL.md sources. Read-only.

Audit and repair any public GitHub repo. Free survey; paid source, unified diffs and a pull request.

Shotanvil

com.shotanvil.api

Verified

Screenshot/PDF/HTML rendering API. API key or x402 required — keyless access disabled.

Paste short text, get a shareable URL. Read any by slug; create with an API key.

ShortPixel Image Optimizer

com.shortpixel.mcp

Verified

Optimize public image URLs via the ShortPixel SPIO API for AI agents

Constellation

com.shiftinbits

Verified

Code Intelligence Platform for AI Coding Agents

ShareSEER

com.shareseer

Verified

Access SEC filings, insider transactions, and financial data via the ShareSEER API.

Runnable, versioned lists for agents: tools, prompts and lists as resources. Git under the hood.

Entity resolution — data mapping, SDK code generation, docs search, and error troubleshooting

Send real faxes to EU institutions: pay per fax via checkout link or prepaid API key.

Generate branded contractor quotes: hosted approval page, PDF, QR code, and Stripe payment link.

AI-powered optimization API by Sematryx

Mcp

com.secdim

Verified

Personalised developer security learning pathways from SecDim's challenges and courses.

Code intelligence for LLMs. Analyze, search, and retrieve code from any public git repository.

Scrollport

com.scrollport

Verified

Verified, pay-per-use API tools for AI agents through one authenticated connection.

Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.

x402 Gateway — Inspect Paid API Terms

com.scriptmasterlabs

Verified

Discover x402 paid APIs and inspect fresh payment requirements before authorizing spend.

Free YouTube transcripts, no API key: videos, channel lists, latest uploads, bulk download links.