A directory of services AI agents can actually use — APIs, tools and merchants with machine-readable interfaces and agent payment protocols. Badges are probe-backed, never self-asserted.
| Score |
|---|
 Stripe Issuing for AgentsMCPOpenAPIllms.txtMPP Issue virtual cards agents can spend on, with real-time authorization decisions, per-card spend controls, and full transaction visibility | Payments | ||
 StytchMCPOpenAPIllms.txt Connected Apps and M2M auth — treat each agent as its own OAuth client, and stand up OAuth-compliant MCP servers | Identity | ||
 SupabaseMCPOpenAPIllms.txt Postgres with pgvector, auth, storage, edge functions, and a remote MCP server | Memory | ||
 TavilyMCPOpenAPIllms.txt Search, extract, and crawl endpoints tuned for RAG and agent loops | Search | ||
 Universal Commerce Protocol (UCP)OpenAPIllms.txtUCP Open commerce standard from Google and Shopify for agentic shopping journeys across retailers, pairing with AP2 for the payment leg | Payments | ||
 UnkeyMCPOpenAPIllms.txt API key issuance, per-key rate limits, and usage analytics for machine-to-machine access | Identity | ||
 UpstashMCPOpenAPIllms.txt Serverless Redis, Vector, and QStash with per-request pricing and an official MCP server | Memory | ||
 VapiMCPOpenAPIllms.txt Voice agent platform handling telephony, turn-taking, interruptions, and warm transfers | Messaging | ||
 Vercel AI GatewayMCPOpenAPIllms.txt Unified model endpoint with failover, spend limits, and observability, wired into the AI SDK | Models | ||
 WorkOSMCPOpenAPIllms.txt AuthKit, Connect, and MCP auth — OAuth flows, scoped tokens, and bot detection for agent access | Identity | ||
 x402OpenAPIllms.txtx402 Open HTTP 402 standard for per-request stablecoin payments, now at v2 and governed by the x402 Foundation | Payments | ||
 Zapier MCPMCPOpenAPIllms.txt Thousands of app actions exposed to agents through a hosted MCP endpoint, no per-app integration work | Platforms | ||
 ZepMCPOpenAPIllms.txt Temporal knowledge-graph memory (Graphiti) with bi-temporal validity, so agents can query what was true when | Memory | ||
 Agent Payments Protocol (AP2)llms.txtAP2x402 Open protocol using signed mandates so agents can transact within user-defined limits, with x402 and card rails | Payments | ||
 Agent2Agent (A2A)OpenAPIllms.txt Open protocol for agent-to-agent discovery, task delegation, and streaming updates across vendors | Platforms | ||
 AlchemyMCPOpenAPIllms.txtMPP Blockchain node and data APIs — transfers, tokens, NFTs, and webhooks — payable per request over MPP | Search | ||
 AlpacaMCPllms.txt Commission-free US stocks, options, and crypto brokerage API with a free paper-trading environment | Markets | ||
 AsanaMCPOpenAPIllms.txt Work graph — tasks, projects, and portfolios — over REST and a remote MCP server | Platforms | ||
 AssemblyAIOpenAPIllms.txt Speech recognition, diarization, and audio intelligence models via API | Speech | ||
 Atlassian (Jira + Confluence)MCPOpenAPIllms.txt Jira issues and Confluence pages over REST and a remote MCP server | Platforms |
Same query as JSON: /api/v1/services?has_llms_txt=true&page=3