Find MCP servers that
actually work.

AgenticRail Gate - sequence enforcement and verifiable audit receipts for AI agent compliance

nz-agenticrail-gate

Deterministic runtime enforcement of step order for AI agents: ALLOW/DENY before a step runs.

Anagent

io-github-jaytahir-anagent

A registry of AI agent tools — MCP servers, APIs, CLIs, SDKs — kept current by automated ingestion.

Attest

io-github-attestagents-attest-mcp

Scan agent payment endpoints (x402, AP2, L402, MPP, 402) for a trust grade A-F before paying.

Battery Proposal Agent

io-github-quli-ops-battery-proposal-agent

Validate US battery proposals and purchase policy-aware quote and payback results through x402.

Bay Run

io-github-barneywohl-bay-run

Free OpenAI-compatible inference with signed provenance receipts and 3 focused MCP tools.

Call For Me

io-github-kimjin8-call-for-me

Give your AI agent a phone. Place outbound calls to US businesses to ask, book, or confirm.

CheckMyVIN

net-checkmyvin-checkmyvin

Decode any VIN and check open NHTSA safety recalls. Free official US government data, no auth.

Content Provenance

com-bonissystems-content-provenance

Anchor a content-creation event to the Knox chain; returns a C2PA-aligned, FRE 902-shaped bundle.

Dedicated Mac Mini AI Bot Setup

io-github-eibrahim-dedicated-mac-mini-ai-bot-setup

Read-only Mac mini AI operator setup offer with queue, pricing, and buyer-route tools.

Document Integrity Validator

io-github-ojaskord-document-integrity-validator-mcp

AI reasoning checks any document against known international standards before your agent acts on it.

Fabler x402 Tools

com-fablerlabs-x402-tools

Free catalog and 2,048-character secret-scan preview for Fabler's x402 agent tools on Base.

IssueFoundry Agent Market

io-github-codework-lgtm-issuefoundry-agent-market

Discover agent services and buy IssueFoundry's fractional-cent x402 reliability utilities.

LLM Abacus

com-llmabacus-pricing

Compare up-to-date pricing for 40+ LLMs (incl. Chinese) & estimate cost from tokens. EN/zh.

Lulu Registry MCP

io-github-lulu-the-narwhal-registry-mcp

Search and get install details on MCP servers, right from your agent -- a unified marketplace index.

MUJ428 Trust Layer — Bind Approved Intent to Verified Effect

io-github-wmujahid428-web-muj428-trust-layer

Payment-rail-independent intent-to-effect integrity for consequential agent actions.

NeuroTrade Signal API

com-a3eecosystem-neurotrade-signal

AI-powered crypto trading signals: direction, confidence, TP/SL, thesis, technicals. 8 strategies.

NodeProxy Web Surface Markdown Parser

io-github-pgalyen1987-nodeproxy

x402 MCP web parser: URLs to Markdown for agents. USDC on Base, Polygon, Arbitrum, Ethereum.

ONCE

io-github-gsterlingpress-once

Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.

Oh My Posh Validator

dev-ohmyposh-validator

Validate oh-my-posh configurations and segment snippets against the official schema.

PREFLIGHT — URL Routing for AI Agents

io-github-gsterlingpress-preflight

Choose HTTP, browser, machine endpoint, or avoid before an agent visits an unfamiliar URL.

SEMIPRO Cycling Intelligence

io-github-damianruse-semipro-intelligence

Analyse cycling-event GPX routes and build bounded, practical ride-fuelling carry plans.

StitchAPI Docs

dev-stitchapi-docs

Search and read the StitchAPI docs: search_docs finds relevant sections, get_doc reads a page.

Tender MCP

io-github-ojaskord-tender-mcp

Government tender search for AI agents. UK, EU and US procurement opportunities.

TickerFacts

com-tickerfacts-fundamentals

SEC EDGAR fundamentals as agent tools: look up or screen US public companies. Free, no key, CC0.

Time's up Skybridge example App

tech-skybridge-times-up-time-s-up

Skybridge Example App showcasing a Time's up game with the LLM

VAT Validator MCP

io-github-ojaskord-vat-validator-mcp

Validate EU, UK, AU VAT numbers for AI agents. EU ViDA e-invoicing compliance.

Web Scraper to Markdown API

io-github-br0ski777-web-scraper

Extract clean markdown from any URL. Removes boilerplate. For RAG pipelines. x402.

agent-context-api

io-github-dacode-dev-agent-context-api

Agent-work MCP: free context preflight and page-read previews, paid x402 HTTP upgrades.

agent-gateway

works-relux-agent-gateway

Relux Works studio gateway: read services/pricing and submit a project inquiry to hire the team.

agent-memory

com-agishub-agent-memory

Persistent semantic memory for AI agents: store and recall text by meaning (RAG). x402

agent-sec

ai-kernora-agent-sec

Zero-install security baseline for AI coding agents — OWASP/CWE-cited rules over MCP.

agent-tool-finder

io-github-ciinkwia-agent-tool-finder

Free search across ~35,000 agent tools (x402 bazaar + MCP registry) by plain-language need.

automotive-mcp-server

com-thenextgennexus-automotive-mcp-server

Cars.com listings, VIN lookups, and dealer inventory for car-buying assistants.

cache-proxy

io-github-ainode-tech-cache-proxy

LLM caching proxy (x402 USDC on Base) - exact + semantic cache. Free health.

cassandra-predict

com-dropwatchhq-cassandra-predict

Cassandra prediction hub: one MCP door over govcon forecasts (recompete, contractor signals).

charm

io-github-bitmacrocode-charm

OEM automotive repair data - part numbers, torque specs, procedures for 1982-2013 vehicles.

cost-seg-smart

com-costsegsmart-cost-seg-smart

Cost segregation study pricing and Year-1 depreciation/tax-savings estimates for US properties.

developer-toolkit-mcp

io-github-mjaskolski-developer-toolkit-mcp

The documentation, as a tool your agent can call: 950+ AI-dev guides. Search + fetch tools.

docweave-mcp

io-github-nicolasmartalog-docweave-mcp

Generate and read PDFs for AI agents: a generate_pdf and a read_pdf tool, priced per document.

doing

live-alpic-doing-v2-d5286fe8-doing

simple task manager for your LLM

elsa-agent-gateway

io-github-sockshead-elsa-agent-gateway

ELSA — Coach IA de ciclismo y comunidad en LATAM: planifica tu bloque y encuentra tu club.

events

bot-yeehaw-events

Agent-first Austin events concierge — fresh, sourced answers to what's happening in Austin.

free-blueprints

io-github-agent-blueprint-free-blueprints

Free AI agent blueprints for procurement and onboarding. No signup, no API key.

fresh

io-github-gsterlingpress-fresh

Know whether an AI agent should REUSE or REFETCH a URL before retrieving it again.

injection-detector

io-github-viridis-security-injection-detector

Formally-verified injection/exfiltration detector for AI agents (MCP-02).

intelligence

io-github-byimprint-intelligence

Agent-callable creator intelligence: 952+ scored YouTube creators across 180 niches.

keryx

io-github-tang-vu-keryx

Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.

knowledge

at-designare-knowledge

Knowledge Base von designare.at – Michael Kanda, Web & KI aus Wien. Semantische Suche über RAG.