MCP Server Directory

Castle MCP by usefulapi io.usefulapi/castle

Investigate security events and manage the allow/deny lists an analyst acts on.

Converts photos or scans of printed sheet music to MusicXML with optical music recognition

guide-registry guide.officeleader/guide-registry

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

Piloxa io.github.Piloxa/piloxa

Prepare USPS Certified Mail letters from any AI assistant; a person reviews, pays and authorizes.

Authentication-Info nextnonce shape, value discarded io.github.sadri-dridi/auth-info

Authentication-Info nextnonce shape, value discarded

Debian Security Advisories — buy per-query in-session (debianwatch) com.a2awire/data-debian-security-advisory-dsa-linux

Debian Security Advisories (DSA). $0.01/query. Register in-session — free testnet funds.

guide-registry guide.coachingleader/guide-registry

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

WebStartHub services com.webstarthub/services

Public services, guide/FAQ search and estimates. Inquiry drafts require scoped authentication.

Save This One io.github.yemyat/save-this-one

Save, search, read, tag, and organize your bookmarks from AI assistants with OAuth sign-in.

Read-only access to VAAST vulnerability scan findings, workspaces, and targets for AI agents

13 rules that decide whether a vulnerability report ever reaches you

insumer com.insumermodel/insumer

Wallet auth: send a wallet and conditions, get a signed boolean across 37 chains.

Menlo com.menloinsurance/mcp

Complete a Menlo application, authorize carrier quote requests and answer quote follow-ups.

guide-registry guide.bicycle/guide-registry

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

DomainDNA dev.workers.cybermax-tools.cybermax/domaindna-api

Tech stack, email security (SPF, DMARC, MX provider) and domain age API + MCP. 25 free domains/day.

Website compliance checks for Russian personal data law 152-FZ: score, violations, fix instructions.

accessproof com.edgethirteen.www/accessproof

Scan a web page's markup for the WCAG failures ADA demand letters cite most often.

guide-registry guide.counselor/guide-registry

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

FlutterGo ai.fluttergo/remote

Create, edit, preview, and build Flutter apps via FlutterGo.AI cloud MCP (OAuth).

Scan a website for SEO, accessibility, performance and security issues, and read the report.

FindWeedNY com.findweedny/findweedny

Licensed NY cannabis dispensaries, brands, deals, license checks and lab-anchored reviews. No auth.

Rose Bounty org.agttglobal/rose-bounty

AI-agent trust infrastructure for discovery, authority, execution, verification, and receipts.

Brain Scanner io.github.kevin-lozada-santos/brain-scanner

Recover project context, review recorded decisions, and steer queued work across AI coding agents.

React Native and Expo health check: upgrade blockers, store rules, crash risks, security findings