Developer Tools MCP Servers

Ask your AI to check, fix and submit your App Store release. 41 tools for the paperwork.

x402 API gateway for web extraction, search, translation, image generation, screenshots, PDF and OCR, paid per call in USDC on Base.

AI design fidelity — compare Figma designs or screenshots against rendered UI. No API keys.

Test, score and inspect n8n workflows with config-driven test suites, two-tier scoring, execution traces and a built-in node catalog.

Build Laravel apps through conversation. Code stored as structured JSON for surgical AI edits.

Screen-reader navigation cost analyzer. Scores AT user effort to find, reach, and operate content.

Real-time diagnostic snapshot of the local dev environment: framework, running services, recent errors and git state.

Fault injection for MCP servers (timeouts, malformed JSON-RPC, corrupted outputs) with a reliability scorecard for output schemas and…

Local stdio MCP server for cached, loop-aware JS/TS diagnostics (Oxlint, tsc, Biome, ESLint).

Merge gate for AI-written code: deterministic vetoes plus a Claude Haiku 5.5 review. No signup.

Evaluate, benchmark, and simulate AI agents on the VerifyAX agent-evaluation platform.

Hundreds of x402-paid APIs as MCP tools, auto-discovered from Coinbase Bazaar. USDC on Base+Solana.

Advisory AOS agent health scan before deployment (manifest, services, immune loop, evidence).

Static blast-radius audit for MCP servers before agent install. Manifest optional.

Zero-config runtime and browser error sensor for AI coding agents: intercepts dev server crashes and in-browser exceptions with…

Stops agents double-firing side effects: 1,000 racing duplicates, exactly one execution.

Lossless context guard for coding agents: command digests, file outlines, line-range reads.

Audit a web page's images: natural vs rendered sizes, oversized detection, and formats.

Records Python, Rust and TypeScript program runs to local SQLite so coding agents can query call trees, exceptions and value flow.

Micro-settled web content extraction and JSON schema validation utilities for AI agents via XRPL.

Manage Featureflip feature flags, targeting and rollouts from AI agents and editors.

Govern model, agent, skill, and MCP workflows with policy, approvals, traces, and usage analytics.

Reliable async execution for agent tool calls: schema gating, retries, idempotency, audit trail.

Free stdio bridge to Delx Protocol: resume after compaction, warm handoff, recover. No API key.

23-in-1 developer utility toolkit — search, exchange rates, crypto, QR codes, and more

Upload Android and iOS builds to buildtree and get install links, QR codes and tester feedback.

23 API tools for Claude Code — email, DNS, SSL, NLP, scraping. Free tier included.

A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.

Lets your coding agent ship a SwiftUI iOS subscription app from idea to TestFlight: niche validation with live App Store data, SwiftUI…

Search, inspect and compare infrastructure tools for AI agents from a checked directory.

Leases development port blocks to each clone or git worktree, writes .env files and resolves service names to URLs so parallel agents get…

Renders HTML in a headless browser and detects layout defects (text overlap, element overflow, leftover placeholders) without baseline…

Indexes a repo into a local, deterministic code graph (symbols, references, dependencies) with semantic diffs and impact analysis.

29 free tools: DNS, email auth (SPF, DKIM, DMARC), TLS, headers, WHOIS, dev utils.

Codebase health MCP: dead code, cycles, coupling, architectural drift.

Read-only SonarQube Community Build access for AI agents: issues, hotspots, rules, code snippets

Gives coding agents the user's own view and control of overseer.nvim tasks in Neovim

Local code search for coding agents: find the right file with far fewer tokens.

Manifest-driven MCP server scaffolder and runtime hub for tool integrations.

Regulation and deadline linters for EU CRA, DORA, NIS2, the EU AI Act, PCI DSS, WCAG, e-invoicing and more, reporting file, line and fix…

Local CI/CD for agents: runs jobs on LGH git events in isolated checkouts, with failure diagnosis, approval gates, auto-rollback and a web…

Dependency picker for coding agents: recommends, compares and scores GitHub repos with a verdict.

Code search for AI coding agents with hybrid retrieval, structural search and shared indexing across Git worktrees. Requires PostgreSQL…

Compound Labs: eleven keyless lookups. Model pricing, dep health, stack cost, registries.

Generate fictional test identities, addresses, phones, Luhn cards and IBANs for QA fixtures (66 countries). Companion web tools at…

Test management over MCP: author cases, run manual executions, cut releases, read health

Offline, deterministic cause and fix for Node, npm, Next.js, CORS and Postgres URL errors.

Breaking-change diffs for npm packages: removed exports, changed signatures, migration notes.

MCP server for quelllm.fr: 190+ open-weights LLM catalog - list, compare, VRAM and cost estimates

Offload cheap work from your AI agent to a local Ollama model, at zero cloud cost.

MCP server for VisiMark, a document integrity layer for Markdown: checks numbers against formulas.

Generate realistic, relational synthetic JSON test data from templates, via the JsonFabrica API.

Read, create, update and delete gists on a self-hosted Opengist instance

Generate PDFs from HTML, a URL or a template with JSON data, and extract text or Markdown from PDFs.

Run accessibility, contrast, and design token audits and file QA issues from your AI coding tool.

Scaffold, compose, and upgrade modern multi-language projects as a native tool for AI agents.

Google Play reads and explicitly opted-in operations using your own local Google access.

App Store release pilot — version bump, TestFlight upload, metadata, review submission

AST-based code outliner, log compressor and context budget analyzer to reduce LLM token usage.

Health checks, binary validation and JSON auto-repair for MCP client configuration files.