Developer Tools MCP Servers

Pay-per-call AI query and versioned task memory for agents. No account, no API key, via x402.

MTG market data: search 114K+ cards, price signals, AI analysis. Free tier available.

Live GPU rental market: 2,500+ offers across a dozen provider feeds. History, watches, limit orders.

Deterministic, no-LLM security scanner for MCP servers, plus an inline proxy gate.

Discover and book theatre, tours, attractions, and live experiences worldwide. No API key required.

Astra DB tools for agents: schema, find, vector search, guarded writes, and interactive views.

Convert uploaded speech or singing with your saved HanoLab voices, using OAuth and credit quotes.

Premium agentic endpoint for deepsort-object-tracker-mcp.

Cloudflare Workers MCP server: api-perf-analyzer

Pay-per-call numeric claim checks over x402 USDC on Solana mainnet. First 10 calls free.

Sandboxed local filesystem: read, search, edit, copy, archive, and safely manage files.

Cloudflare Workers MCP server: govdata-korea

FAA Regulations MCP — US Federal Aviation Regulations (14 CFR, 'FARs').

Cloudflare Workers MCP server: api-response-cost-analyzer

Stateless advisor + validator for Conducted Development: kickoff, artifact validation, rule checks.

Governed retail, FMCG, and CPG operational tools: runs, cases, approvals, audit-ready execution.

Read sleep, readiness, activity, stress, heart rate and workouts from the Oura Ring.

Multi-tenant hosted MCP server for Oura Ring — 21 read-only tools, OAuth per user.

GooodBilling 公式 MCP Server — Claude Desktop / Cursor 等の MCP 対応クライアントから AI ファーストで請求書・見積を操作する

A human must claim and pay before EIN.LLC files. Agents may assess, prepare, and read status.

Cloudflare Workers MCP server: domain-intel

AI-Ready design system MCP: melta UI tokens, component contracts, 107 rules, check_html self-verify

Cloudflare Workers MCP server: env-blueprint-validator

US tariff API + MCP: HTS duty rates, Section 301 lists. Keys $19/mo; 50 free calls a day.

Undo a coding agent turn, including shell commands and untracked files.

US shipping labels for AI agents: buy USPS/UPS/FedEx, track and refund via EasyPost.

Cloudflare Workers MCP server: a11y-scorer

Cloudflare Workers MCP server: agent-loop-detector

Cloudflare Workers MCP server: agent-trace-auditor

Book HVAC and plumbing service with Western Sky in Fishers and the Indianapolis area.

Discover and trade tokenize-anything coins on hyde.trade (Robinhood Chain). Non-custodial.

Cloudflare Workers MCP server: ai-model-router

A parody shop your AI agent can 'buy' from - deliveries get eaten by whales. 100% fake.

MCP server for TalkToPlanB: list rooms, read & send messages (WhatsApp alternative).

Cloudflare Workers MCP server: ai-crawler-policy

Read-only MCP server for The Cracks Index: ranks countries and regions on social-safety strength

Book HVAC and plumbing service with Western Sky in Montana's Flathead and Gallatin valleys.

Cloudflare Workers MCP server: ai-agent-scratchpad

Crypto market intelligence: social sentiment, on-chain, trending narratives & analyst insights.

Free online video editor: search tools, guides and templates, video sizes, pricing, editor links.

Premium agentic endpoint for dhl-shipment-tracker-mcp.

Cloudflare Workers MCP server: ai-guardrails

Virtual corporate debit card issuer for autonomous bot transactions.

MCP standards client for your own custodial SAIHM operator. Free start: @saihm/mcp-server-pro

Cloudflare Workers MCP server: cron-monitor

Cloudflare Workers MCP server: data-transform

Cloudflare Workers MCP server: ai-provider-status

Cloudflare Workers MCP server: api-request-deduplicator