MCP Server Directory

Domain Trust Check (DNS, Email Auth, TLS, Headers) io.github.pcp183/domain-check

Check a domain's DNS, SPF/DMARC and TLS before trusting it. $0.003/call via x402.

arxiv-digest-mcp io.github.robertoyanguas-ops/arxiv-digest-mcp

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibT

Query Readwise (token; set READWISE_TOKEN, Token header): auth check, books, highlights.

Single-owner Feishu MCP: run your own service, configure your app, authorize your Feishu account.

Arbiter com.arbiterscan/arbiter

Security checks for apps built with AI: leaked keys, open routes, database rules, each with a fix.

Nmap Cloud Scanner - Port Scanner + Service Detection | Bulk io.github.AnshumanAtrey/nmap-scanner

Nmap Cloud - Port Scanner & Service Detection | Free Trial

ncrypted io.github.Seidl-Family/ncrypted

One-time, end-to-end encrypted secrets for agents. 0.005 USDC per secret via x402.

Inkpluck: Article Extractor — URL to Text, Markdown & Metadata io.github.shawmena-dotcom/article-extract

Inkpluck: read web articles as Markdown + title, authors, date, language (newspaper3k successor)

Clean Notes app.cleannotes/clean-notes

Kanban tasks and project notes for AI clients, with OAuth and per-project read or write grants.

SpriteFuse com.spritefuse/spritefuse

Create 2D characters and animations, revise sprites, adjust timing and export assets via OAuth.

Musael com.musael/musael

Musael novel-writing workspace MCP with OAuth (DCR); read and suggest tools.

VideoBGRemover net.videobgremover/video-background-remover

Remove video backgrounds with OAuth, account credits and transparent WebM downloads.

prompt-guard-mcp io.github.robertoyanguas-ops/prompt-guard-mcp

Scans untrusted web pages, emails, or tool outputs for prompt injections and returns sanitized tex

NullClear Arbiter io.github.mithgalalfayez/nullclear

Autonomous x402 payment schema-escrow arbiter, spend firewall, failover & ERC-8004 Sybil oracle

Disclose AI authorship of code per the ACO standard — tools for AI coding agents.

DNS Spy io.dnsspy/dnsspy

DNS monitoring and domain security: live DNS, propagation, WHOIS/RDAP, SSL and look-alike domains.

Gulf AI Deals io.github.gulfaideals/gulf-ai-hub

Read-only, no-auth: sourced GCC AI deals, AI agent use cases in Saudi/UAE, and Arabic AI tools.

assay io.github.robertoyanguas-ops/assay

A2A & MCP Pre-Flight Security: SHA-256 tool schema rug-pull detection and liveness grades.

CodeAtlas br.com.codeatlas/mcp

Read-only CodeAtlas service catalog: list, get and search services. No authentication.

featurevote app.featurevote/featurevote

Read requests and votes; with write access, manage feedback and draft changelogs. OAuth required.

hypersync com.tartanhq/hypersync

Read-only HRMS data (employees, connectors, salary) from Tartan HyperSync. OAuth-protected.

TaskBullet Site Guide io.github.GriffMurder/taskbullet-site

Public, no-auth MCP for taskbullet.com: services, pricing, intent routing and the right next URL.

AtlasClose Governance Demo com.atlasclose/demo

Experimental AtlasClose governance demo. Authority checks, labeled evidence, receipts, refusals.

Scanverity Public Market Discovery com.scanverity/public-market-discovery

Free Polymarket search; EUR100 written reports or one-rule QA; EUR500 five-rule QA by quote.