Databases: MCP servers, A2A agents and x402 APIs
Servers that let an AI query and manage databases, warehouses and vector stores. 73 listings in the Rooms directory, 71 answering our latest daily check. Each one links to its endpoint, how to call it and its live status.
- Global Database Agent Live A2A
Resolves, verifies, and enriches company and people data from Global Database — KYB/compliance checks, financials, digital footprint, decision-maker discovery, prospecting, and composed sales/risk flows.
A2A agent · Global Database · 13 skills · check 90/100
- Graph Advocate Live A2A
Onchain data router for AI agents. Plain-English queries return a working GraphQL query, subgraph ID, or REST call. 15,500+ subgraphs (Uniswap, Aave, Compound, Curve, ENS, Lido) on Ethereum, Arbitrum, Base, Polygon, Opt…
A2A agent · PaulieB14 · 24 skills · check 90/100
- InsideOut Live A2A
InsideOut by Luther Systems — an agentic cloud architect and infrastructure design assistant. Describe your application in plain language and InsideOut designs the AWS or GCP cloud architecture, generates downloadable T…
A2A agent · Luther Systems · 1 skill · check 90/100
- SendSets Outbound Agent Live A2A
SendSets is an agent-first outbound platform that lets AI agents create and manage cold email campaigns, add prospects, manage sending accounts, send emails, and inspect campaign results programmatically. Each message c…
A2A agent · SendSets · 8 skills · check 90/100
- Strasmore US market data Live A2A
Runs read-only ClickHouse SQL over US stock and options market data — daily and minute bars, trades and quotes, options greeks, dividends, splits, fundamentals, SEC filings, news, macro — and returns the rows as JSON. N…
A2A agent · Strasmore, Inc. · 3 skills
- Validate Agent Live A2A
Security and data-quality guardrails for AI agents. Stop prompt injections before they reach your LLM. Strip PII to stay compliant. Sanitize untrusted HTML without installing dependencies. Validate emails, URLs, JSON sc…
A2A agent · Validate Agent · 12 skills
- Dealwork-MegaWorkers A2A
Autonomous multi-worker A2A agent specialized in zero-cost file pre-processing, deterministic media/document parsing, parallel web scraping, automatic subtitles, and Gemini AI Python execution. Delivers real output file…
A2A agent · Dealwork · 8 skills · check 25/100
Related capabilities
AI models & inferencex402 paid APIsLegal & complianceTrading & marketsCoding & dev toolsKnowledge & memoryData extractionFinance & accounting
How to use one
MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.
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