MCP Server Directory

KCI (Korea Citation Index) literature & citation search via REST Open API + OAI-PMH

Analyze LLM API costs: token waste detection, caching savings estimates, model comparison

Public Data Catalog io.github.yhay81/public-data-catalog

Reviewed public-data search and execution with provenance and verifiable integrity receipts.

AP Control Labs Finance Controls io.github.juodoc/ap-control

Read-only finance and operations controls for AI agents with evidence and safe next actions.

Control macOS through Hammerspoon: windows, apps, and API search. Injection-safe by design.

Enhanced Godot 4.5-4.7 MCP: headless+editor+bridge, secure GDScript sandbox, closed-loop AI dev.

Self-hosted MCP gateway for Codex, Cursor, and Cline with provider-free prompt enhancement.

Trading Strategy Data io.github.Vohlsyr/trading-strategy-data

Live crypto trend signals, ranking, and backtesting for BTC/ETH/SOL/XRP/ADA. x402 pay-per-call.

Read-only Solana MCP: rug-risk, bundle & deployer checks, live market, full audit. No keys.

Self-hosted MCP proxy that puts an x402 paywall in front of an existing MCP server

Whetstone link.cyberelf.whetstone/tools

Verifier-grounded AI promotion gates, disposable report cards, and signed PASS/HOLD/BLOCK receipts.

Drive Argus anti-detect browser profiles: isolated identities with their own fingerprint and proxy.

Synchronity io.github.themewireco/synchronity

Shop connected e-commerce stores: search, compare, cart, and checkout with buyer approval.

Free, local MCP server that audits ClickUp, Slack & Teams for work that slipped through.

Nalegalu MCP io.github.nalegaluorg/nalegalu

Semantic search over Polish law and case law, citing the exact in-force article.

Site Rep MCP io.github.nish3451/site-rep

Read-only Site Rep handoff: agent brief, pending work, first-customer receipt with payment evidence.

Google Chat as MCP tools: read, search and write to your spaces, direct messages and sidebar.

Search and read Apple Contacts — resolves numbers and emails to names, writes off by default

Manage a Websupport account: DNS, FTP, hosting, databases, mailboxes, VPS and invoices.

Fail-closed, read-only PostgreSQL and MongoDB access for AI agents over MCP.

USDC micropayments on Base + Solana via x402. BYO wallets. Cloudflare Workers. No Coinbase.

MCP server exposing an Outflow workspace's live architecture graph as context for AI coding agents

Open-source AI context firewall for governed model, retrieval, memory, and tool access.

Umlout io.github.dmkorj/umlout

Build Umlout projects: objects with types and fields, relations, and boards that draw them.