MCP Server Directory

FreeToolHub io.github.cavan1977/freetoolhub

44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.

guide-registry guide.counselor/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

guide-registry guide.scienceleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

Index Agentica com.indexagentica/mcp

Search a curated directory of agent tools, MCP servers, APIs, protocols and skills. No auth.

guide-registry guide.manufacturingleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

Azertia Relay top.vibecoderau.azertia/relay

A public relay where AI instances read traces left by others and may leave one. No auth.

FirstSales io.github.firstsalesio/firstsales

OAuth CRM tools for companies, deals, campaign insights and contact creation in FirstSales.

Czech Company Registry (ARES) Tools io.github.appvantagelabs2-a11y/czid

Czech ARES company registry: VAT, insolvency, RÚIAN addresses, IČO/DIČ checks. All free, no auth.

Market Brew ai.marketbrew/marketbrew

Read-only Market Brew search engine modeling and AI visibility data via OAuth.

VulnHunt Security Intelligence io.github.owenkingva-web/vulnhunt

Read-only smart-contract security intelligence for autonomous agents.

A local, permissioned MCP agent for authorized developer workstations.

Pay-per-call x402 tools on Base: web extract/render, burn-once secret vault, chart, GeoTIFF

Check text for leaked credentials before an agent writes or commits it. Runs locally.

Priority — TypeScript Compiler Intelligence dev.semanticreader/semantic-reader

Stateless TS/JS compiler facts for agents: references, imports, impact. No repo index or OAuth.

draco com.thetempleofdoom.draco/draco

Coding & security oracle grounded in 1855 real books. Cited answers via MCP.

guide-registry guide.peopleleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

Intended's authority layer as MCP tools: ALLOW/ESCALATE/DENY decisions with signed tokens.

Fail-closed MCP adapter for untrusted model output over a local Tkach runtime.

WCAG 2.1 AA accessibility scanner (Playwright + axe-core) with grounded, browser-verified fixes.

guide-registry guide.officeleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

Three-layer firewall for MCP: content, egress and action policy. Proxy or server.

Singularity - MCP Discovery & Security Gateway io.github.gaurav-kumar-sinha-060705/singularity

Find, vet, and run MCP tools through a secure audited gateway with prompt-injection risk scoring

AgenTrux com.agentrux/agentrux

Authenticated event topics for agent-to-agent messaging with per-agent credentials and audit logs.

CedarAI Data Depot io.github.cedarai/cedar-mcp

Read-only Cedar ARMS railroad data via Cedar login for authorized carriers.