Developer Tools MCP Servers

Newsletter growth loops, welcome-sequence architecture, subject-line and list-metric guidance.

Agent x402 Paywall MCP — Coinbase HTTP 402 protocol + on-chain settlement. Agents pay per-call

Check who your agent is about to pay over x402: real service, relayer, treasury, or buyer.

全球美食加权随机推荐：基于 396 道菜的知识库，给出多样化的就餐推荐。

Stay ahead of pollution with our Air Quality MCP. Access real-time air quality data, including

Deterministic fitness calculators — TDEE, adaptive TDEE, body fat, 1RM, macros — with consensus.

Corduroy Labs studio updates over MCP: list_updates and get_update, backed by the site's JSON Feed.

Access Clerk authentication docs, SDK snippets, and quickstart guides

Security scanner for AI Agent skills, plugins, and MCP servers with A-F grading.

Runtime authorization for AI agents and smart contracts via an immutable on-chain policy registry

Connect your 99Pay account to AI via Brazil's Open Finance: balances, statements, cards, investments

Barker's real-time stablecoin yield index + AI advisor + non-custodial deposit/redeem (x402 paid).

An MCP server that provides OpenDart API

City of Roanoke GIS — Roanoke, Virginia open geospatial data (ArcGIS).

An MCP server that provides LinkedIn & Reddit data

Anthropic Claude Fable 5 MCP server — top-tier planning and code critique for handoff

MCP server for Google Ads — 22 tools for spend diagnosis, impression share, and asset performance.

Biorhythm cycles, forecasts, critical days and compatibility for AI agents, one API key.

Crypto market intelligence for Projects, Topics, Intel, Reports, and Clusters.

ViridisOS — theorem-backed conservation certification + the unified trust root/mark/toll. Certify pa

Deterministic repository structure mapping for onboarding agents.

AI visibility analytics for brand mentions, citations, sentiment, and GEO reports

MCP server for QuickBooks Online (Intuit) — customers, invoices, payments, items, accounts, P&L

Local memory engine for AI agents with knowledge graphs, forgetting, and semantic recall