The tools agents can call
151,644 unique MCP servers across ten major directories and registries, each with its sources and history.
Each server counts once, however many directories list it. Glama, PulseMCP and mcp.so listings arrive through MCP Toplist’s open dataset, used under CC BY 4.0. 13,995 listings from bulk publishers wait for review.
Agent Relay
smings
Agent Relay 是一个开源的 Agent 协作中继。两个在不同电脑上的 AI Agent 通过邀请码建立频道，实时互通消息、发布结构化 Agent 合约，遇到越权或无法决定的事停下来，让各自的人类审批，不再需要人肉复制粘贴消息。 支持 Claude Code、Cursor、Codex、Kimi、WorkBuddy 等 MCP 客户端，也提供单文件 CLI。开源、可自托管、MIT License。
Listed on Smithery
Agent Web Index — AI crawler readiness
pfmcp-hq
Can AI assistants actually read a website? This server answers from the **Agent Web Index**: 45,000+ domains probed with real HTTP requests — once as a browser, once as each published AI crawler user-agent (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot and others) — so it can tell apart what `robots.txt` says from what the server actually does. **Tools** - `domain_readiness` — readiness score, per-crawler verdict and the edge vendor answering for a host. - `web_readiness` — the aggregate state of the measured web. - `edge_blocking` — refusal rate per CDN/WAF vendor, over domain×crawler pairs robots.txt allows. - `measure_domain` — measures any domain on demand: six real requests made while you wait. No key, no signup. Dataset is CC BY 4.0. Most AI-crawler blocking is not in robots.txt — it is an edge default nobody chose, and this is the data that shows it.
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Agent Zero — ERC-8004 Agent Intelligence
sampsojp
**Free ERC-8004 agent-intelligence, in MCP.** Coverage, leaderboards, one-call agent vetting, and a payment-graph teaser — across Base, Ethereum **and BNB Chain** — each response with a built-in **x402** upgrade path to the full data. Agent Zero indexes the ERC-8004 agent economy across three chains and exposes the free slice as MCP tools so any agent or LLM can discover and use it directly: - **get_coverage_stats** — ecosystem coverage counts (agents indexed; how many expose a live MCP/OpenAPI/well-known card; contracts verified; owners identified; per-chain breakdown). Counts only. - **get_leaderboards** — top agents by live MCP tool count and by OpenAPI method count, plus most-recently indexed. - **get_agent_summary(chain, agent_id)** — objective signals for one agent (reachable, TLS valid, x402 support, payments-received, MCP/OpenAPI counts, well-known, status label). Vet a counterparty before transacting. - **get_network_teaser** — capped (≤200-node) preview of the on-chain agent-to-agent payment graph. All tools return **counts and coverage only — no PII, no paid data** — and each carries an `upgrade` pointer to the matching paid **x402** endpoint (owner identity, payment history, peers, full market map, full payment graph). Settles in USDC via x402 (EIP-3009), with ETH/BNB fallbacks. Agent Zero is itself a registered ERC-8004 agent (agentId 19353). **What's unique:** first-class BNB Chain coverage (standard ERC-8004 + the BRC8004 fork) alongside Base and Ethereum, and an on-chain agent-to-agent payment graph few directories expose.
Listed on Smitheryagent-2-agent-mcp
digitalist500
Model Context Protocol (MCP) server for the Agent-2-Agent Commerce Network (A2A), enabling autonomous trading agents to query product directories and submit buying requests.
Listed on Smitheryagent-colony
machenh001
Agent Colony is the only social network where every member is a real autonomous AI agent — humans are read-only. External agents join via one heartbeat challenge and gain: real paid tasks to train on (8 open now), Ed25519-signed work receipts (portable reputation), transparent dispatch with mutual ratings, and A2A discoverability via agent-card.json. Post, claim tasks, deliver, settle, level up — all API-only, no browser, no human accounts. Join in one curl command.
Listed on Smithery
agent-economy-tools
crawdad-0ep7
Trust checks for x402 sellers, from the verified data hub. Before your agent pays a seller for the first time: verify its on-chain payment history ($0.10). Check that an endpoint actually delivers when paid, with a real test purchase ($0.25). Sellers listed but never paid: diagnose names the blocker ($1.00). Free discover by need. Signed, recomputable verdicts; USDC on Base; referral only - never in your payment path.
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agent-rendezvous
christopher-raq6
Matchmaking network for personal AI agents: private agent-to-agent compatibility rendezvous. No profiles, no photos, no login.
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agent-robustness
ibuildbots
Run an AI agent against 5 prompt-injection attacks (credential leak, metric fabrication, false halt, runaway spend, log falsification), scored on the agent's observed behavior — not its self-report. Free local self-diagnostic; optional paid hosted proof tier returns an ed25519-signed, independently verifiable badge. A result attests one artifact resisting N of 5 attacks at a point in time under network-isolated execution; it is not a safety certification and not a guarantee of production behavior.
Listed on Smithery
agent402
mike-kq9d
Pay-per-call tools, metered models and finished reports for AI agents: 500+ tools (web search and cited answers, browser render, market and on-chain data, speech-to-text, wallet-keyed memory), paid per request over x402 or MPP, with the pure-CPU tools free via proof-of-work. Start with web.search or catalog.find. Maintained by Havok Holdings LLC.
Listed on Smithery
AgentBIT Router
alexutz6
Router-proxy + pay-per-call x402 tools for AI agents — no API key, payment is the auth (USDC on Base). Pay AgentBIT ONCE and agentbit_route runs the best x402 tool for your task across the whole ecosystem — including external sellers, paid from our treasury — and returns the result. Or call agentbit_discover (free) to search 14,000+ indexed x402 services, and pay-per-call any of 79 keyless tools directly. Tools: on-chain / wallet / DeFi data, token & wallet risk, sanctions & VAT compliance, web search & extraction, structured data & RSS, academic search, company research & enrichment, DNS/domain/IP intelligence, URL threat checks, endpoint monitoring, market sentiment & prediction markets, SEC filings & equities, and CPU primitives (keccak/EIP-55/base58, hash, base64, JWT, UUID). From $0.001/call, no signup. Also: POST /v1/route/execute.
Listed on Smithery
AgentBureau - The Notary for the agentic age
guese-justin
# AgentBureau: The Notary for the agentic age Website: https://agentbureau.de/ Github: https://github.com/JustinGuese/AgentBureau-402-embodiment-as-a-service AgentBureau provides the legal and physical infrastructure for AI agents to operate within the German jurisdiction. We bridge the gap between digital intelligence and real-world action by providing "Embodiment-as-a-Service." Through our API, agents can perform legally binding actions—like sending faxes, mailing physical letters, issuing invoices, forming entire companies (GmbH/UG), handling tax compliance, and opening corporate bank accounts—without needing a bank account, a physical address, or a human identity. ## The Core Mechanism: x402 Payment Gating AgentBureau uses the **x402 protocol**, an agent-native authentication method where **payment is authentication**. 1. **No API Keys**: Agents don't need to manage secrets or create accounts. 2. **Permissionless**: Settlement happens on-chain (USDC on Base L2). 3. **Machine-Readable**: Every request returns structured metadata for autonomous handling of 402 "Payment Required" challenges. --- ## Available Services | Service | Tool Name | Price (USDC) | Delivery Method | | :------------------- | :-------------------- | :----------- | :------------------- | | **Digital Invoice** | `send_german_invoice` | 5.00 | via Lexoffice | | **Physical Letter** | `send_letter` | 3.00 | via Pingen (Germany) | | **Programmatic Fax** | `send_fax` | 1.00 | via Telnyx | | **GmbH Formation** | `form_german_company` | 3,000.00\* | HITL Concierge | | **UG Formation** | `form_german_company` | 1,500.00\* | HITL Concierge | | **Bank Account** | `open_bank_account` | 500.00 | FinTech Integration | | **VAT Registration** | `register_vat` | 500.00 | Tax Portal Sync | | **VAT Return** | `submit_vat_return` | 100.00 | Monthly/Quarterly | | **Annual Filing** | `create_annual_filing`| 200.00 | Bundesanzeiger | | **Debt Collection** | `collect_debt` | 50.00 | Inkasso Automation | | **EU Presence** | `eu_presence_bundle` | 5,000.00 | Full Legal Shield | _\*Formation fees exclude the required share capital (Stammkapital), which is handled via a secure escrow workflow._ --- ## Runnable Code Examples We provide a comprehensive 6×4 matrix of runnable scripts demonstrating how to integrate AgentBureau services across various languages and frameworks. These examples handle the full x402 flow: **Challenge → Payment → Retry**. ### Integration Matrix | Client / Language | Fax | Letter | Invoice | GmbH | | :-------------------- | :------------------------------------------: | :------------------------------------------------: | :--------------------------------------------------: | :--------------------------------------------: | | **cURL / Bash** | [fax.sh](./examples/curl/fax.sh) | [letter.sh](./examples/curl/letter.sh) | [invoice.sh](./examples/curl/invoice.sh) | [gmbh.sh](./examples/curl/gmbh.sh) | | **Python (httpx)** | [fax.py](./examples/python/fax.py) | [letter.py](./examples/python/letter.py) | [invoice.py](./examples/python/invoice.py) | [gmbh.py](./examples/python/gmbh.py) | | **TypeScript (viem)** | [fax.ts](./examples/typescript/fax.ts) | [letter.ts](./examples/typescript/letter.ts) | [invoice.ts](./examples/typescript/invoice.ts) | [gmbh.ts](./examples/typescript/gmbh.ts) | | **LangChain** | [fax.py](./examples/langchain/fax.py) | [letter.py](./examples/langchain/letter.py) | [invoice.py](./examples/langchain/invoice.py) | [gmbh.py](./examples/langchain/gmbh.py) | | **Claude Tool Use** | [fax.py](./examples/claude-tool-use/fax.py) | [letter.py](./examples/claude-tool-use/letter.py) | [invoice.py](./examples/claude-tool-use/invoice.py) | [gmbh.py](./examples/claude-tool-use/gmbh.py) | | **OpenAI Responses** | [fax.py](./examples/openai-responses/fax.py) | [letter.py](./examples/openai-responses/letter.py) | [invoice.py](./examples/openai-responses/invoice.py) | [gmbh.py](./examples/openai-responses/gmbh.py) | ### How to Run the Examples 1. **Navigate to
Listed on Smithery
agentcall
agentcall
Programmable phone numbers for AI agents. Provision numbers, send/receive SMS, extract OTP codes, configure AI voice receptionists for inbound calls, and place autonomous outbound AI voice calls.
Listed on Smithery
Agentcy - Your AI Marketing Agent
goagentcy
A managed AI marketing agent that plugs into all your AI tools. Ask about your marketing in plain English — Agentcy analyzes data across GA4, Google Ads, Search Console, WooCommerce, and more, then delivers synthesized insights and recommendations. Not a data dump. An agent that thinks. One connection. All your marketing data sources. Switch between domains instantly. Works with Claude, ChatGPT, Cursor, VS Code, OpenClaw, and any MCP client. Sign up at goagentcy.com to configure your domains and data sources. Free plan includes 50 requests/month — paid plans start at $29/mo.
Listed on Smithery
AgentData — Structured Information for AI Agents
huangjunsong404
Query structured product, recall, market-access, policy and trade information with source metadata and dataset versions.
Listed on Smithery
agentdoor_mcp
agentdoor
agentdoor mcp for any coding agent
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Agente Galicia
dregafer2
Read-only public discovery for Agente Galicia, a local AI customer-attention service for Galician small businesses. Get a truthful service overview, public contact and operational boundaries.
Listed on Smithery
AgenTee by allover.art
we-6lza
**The first print-on-demand store your AI agent can run for you.** Search 30,000+ all-over-print **100% cotton** tees, build and edit the cart, apply promo codes, fill in shipping and prepare a ready-to-pay checkout. Payment always stays with the human — there are no payment tools, by design. - Free personal tokens: [allover.art/agentee](https://allover.art/agentee) — OAuth sign-in supported - 26 tools: catalog search, cart, promos, shipping, checkout prep, order tracking, Studio design generation - Made at our own factory: reactive printing — the dye bonds into the fiber, prints survive 60°C washes
Listed on Smithery
Agentery — tool discovery and pricing for agents
agentery
Help your agent research AI products and MCP servers for a task. Find candidates, inspect their capabilities and evidence, and compare available pricing. Start with search_providers, open the strongest matches with get_provider_profile, then use compare_providers. Public reads need no account at the direct endpoint. Coverage and pricing availability vary.
Listed on Smithery
AgentFeed: Crypto Liquidations, Funding Rates, Open Interest and Perp Data
ochinimus
Real-time crypto liquidations, funding rates, open interest and perp market data for AI agents, paid per call in USDC over x402. AgentFeed records its own liquidation tape: the complete Bybit feed joined with OKX and Binance, across more than 900 perp markets. 59 tools in one server. Liquidation history, price-level heatmaps, leaders and venue share, cascade detection across every recorded perp, and a 15-minute cascade forecast whose full track record is free to check and recompute. Squeeze scores, cross-venue funding on Bybit, OKX and Hyperliquid, funding extremes and history, open interest and OI spike scans, long/short ratios, basis, volatility, top movers, orderbook imbalance and walls, whale trades and cross-exchange spreads. Solana on-chain data: wallet holdings and activity, token risk, holders, priority fees and Jito tips. DeFi TVL, stablecoin flows and DEX quotes. Peg deviation for tokenized stocks such as xStocks. SOL, BTC and ETH prices and Base gas. 7 tools are free in any MCP client, including fear and greed, the last liquidation on five majors with a 15-minute delay, the SOL cascade forecast and its track record. Paid calls start at $0.001, among them a one-call snapshot of a perp market, the last hour of liquidations across the whole tape and the five most extreme funding rates on Bybit. Payment is USDC over x402 on Solana or Base, over MCP or as plain HTTPS endpoints at x402.ochinimus.app. No API key, no account, no subscription. Every paid tool once costs about $0.77.
Listed on Smithery
AgentGrid.io (by Anima)
agentgrid
AgentGrid.io is a shared workspace for human-and-agent work. Bring any type of agent: Muse, Grok Bot, OpenAI Dot, Claude, Claude Code, ChatGPT, Codex, Cursor, Gemini, OpenClaw, and Hermes, and keep one trusted record of everything it builds. Think Google Drive meets Git, made for AI agents: every app, doc, and file your agents create lands in one shared agent workspace, with full version history, live previews, and one-click sharing with people or other agents. Each agent connects through MCP with its own scoped, revocable access, so you control exactly what every human and agent can see and edit. Agent work becomes team work, with no copies, no lost chat artifacts, and no ecosystem lock-in.
Listed on Smithery
Agentic Sentiment
kemal-zgjb
Moltbook for finance: Autonomous agents discuss financial markets to generate sentiment forecast for stock market.
Listed on Smithery
agentic-attack-surface
relayshieldadmin
Four AI-agent-specific security checks from RelayShield's Agentic Attack Surface: MCP server risk (typosquat/reputation/registration-age), prompt-injection breach detection, tech stack CVE exposure (CISA KEV/EPSS), and bulk identity risk scoring. Each call requires your own RelayShield API key — get one at api.relayshield.net/developers.
Listed on Smithery
agentic-kit
daniel-albinsson
See what an Eve agent can do before you run it.
Listed on Smithery
agentic-swarm-marketplace
hobiecunningham
**Agentic Swarm Marketplace** is a hierarchical multi-agent stack for **machine-paid** commerce (not trading). It exposes **HTTP 402** + **x402** seller APIs (**T54 on XRPL**, **Base USDC**, **Celo**), and an **MCP** server that exposes T54 OpenAPI operations as tools for Cursor and Claude. **Docs & discovery:** [agentic-swarm-marketplace.com](https://www.agentic-swarm-marketplace.com/) · [MCP setup](https://www.agentic-swarm-marketplace.com/mcp-integration.md) · [Repo](https://github.com/Hobie1Kenobi/agentic-crypto-swarm-prototype)
Listed on Smithery
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