MCP Server Directory

sigma-gate io.github.spektre-labs/sigma-gate

Deterministic trust gate for AI output: leaked-secret, prompt-injection & PII in one call.

Scans Greenhouse, Lever, Ashby, Workday, Rippling for roles in any category. Clay-ready.

Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required.

AI Reasoning Commons com.aineedhelpfromotherai/reasoning-commons

Search, reuse, verify AI reasoning. Task marketplace with leaderboard. Zero-barrier, no auth.

MCP server for Yandex.Webmaster API — hosts, search queries, indexing status. Bearer token auth.

Scan, protect, and monitor APIs from AI coding tools. Device-level rate limiting.

MCP server for Caixa Econômica Federal — Pix, Cobrança (SICOB boleto), Extrato (OAuth2 + mTLS)

MCP server for Sicoob — Pix (cob/cobv/DICT), Cobrança (boleto), SPB (OAuth2 + mTLS)

MCP server for Access Worldpay — enterprise processor: authorize, capture, refund, tokenize

MCP server for credential isolation — bots use passwords and API keys without seeing them

Composio io.github.ComposioHQ/composio

Connect AI agents to 1000+ apps with managed authentication and tool-calling.

Self-maintaining knowledge vault: figure-level search, auto-wikilinks, and memory compression.

ACC MCP io.scanbimlabs/acc-mcp

Autodesk Construction Cloud via APS — projects, issues, RFIs, documents, submittals.

scan.mx Email Diagnostics mx.scan/diagnostics

Email deliverability check: MX, SPF, DKIM, DMARC, blacklists, MTA-STS, DNSSEC, BIMI. Graded, no key.

Conta Azul MCP io.github.douglac/contaazul-mcp

Conta Azul ERP MCP — sales, customers, finance and NF-e via OAuth 2.0. Read + write, 35 tools.

AI health, token usage, LLM cost optimization, BYOK vault, and cleanup audits for MCP agents.

atlas-mcp-server io.github.finmanagerai/atlas-mcp-server

Scan options flow, analyze real-time market data, and build investing and trading workflows.

MCP server + tools for the Forge E-- generative-music authoring loop (compile / run / commit).

AI Agent Guardrails MCP server - security layer

Sovereignty Scan io.github.kajaril/sovereignty-scan-mcp

EU AI Act sovereignty scanning. Provider residency, registration status, audit trail support.

Socialync io.github.JackVitick/socialync

Draft, schedule, and publish posts to 8 social platforms with human approval via Socialync OAuth.

Network diagnostics from 6 global regions. SSL, DNS, ping, whois, traceroute, port scan, latency.

tollbooth-authority io.github.lonniev/tollbooth-authority

Tollbooth Authority — Certified Purchase Order Service for DPYC operators

tollbooth-authority-newengland io.github.lonniev/tollbooth-authority-newengland

Tollbooth Authority New England — sub-regional certifier under North America