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51 pay-per-call APIs for AI agents — 23 LLMs (GPT-5.2, GPT-4o, Claude, Gemini, Grok, DeepSeek, Llama, Mistral, Qwen, Perplexity, Kimi, MiniMax, GLM, Devstral), image/video generation, code execution, TTS, transcription, embeddings, crypto data, wallet analytics, ENS, tx simulation, web scraping, and IPFS via HTTP 402 micropayments with USDC on Base/Solana and USDm on MegaETH.

Lightning Network payment gateway for AI agents. Pay-per-request access to Claude, GPT-4 and other models using Bitcoin micropayments. Features model discovery, pricing, prepaid spend tokens, and autonomous payment flows.

MCP server for the AIProx open agent registry. Discover and connect to autonomous agents by capability and payment rail. DNS for the agent economy.

AI-powered Polymarket analysis via Bitcoin Lightning micropayments. Find edge opportunities, analyze markets, get trading signals. Pay per analysis in sats.

Agent-native media processing via Transloadit's 86+ Robots, supporting video encoding, image manipulation, document conversion, OCR, and speech transcription. Hosted or self-hosted via npx.

Speech AI MCP server with pronunciation assessment (phoneme-level scoring, 17MB model, <300ms), text-to-speech, and speech-to-text. 8 tools for AI agents building language learning, accessibility, and voice applications.

Kernel-level governance MCP server for AI agents — enforces deterministic policies (tool filtering, budget caps, rate limits, audit logging) instead of prompt-based guardrails. Part of microsoft/agent-lightning (14k★). Run via `npx agentos-mcp-server`.

https://github.com/IPGeolocation/ipgeolocation-io-mcp

https://github.com/lazyants/transkribus-mcp-server

https://github.com/lazyants/lexware-mcp-server

https://github.com/lazyants/hetzner-mcp-server

- **Name**: Trillboards DOOH Advertising - **Repo URL**: https://github.com/trillboards/dooh-agent-example - **MCP Endpoint**: https://api.trillboards.com/mcp (Streamable HTTP, remote) - **Description**: First Digital Out-of-Home (DOOH) advertising MCP server. 38 tools for AI agents to discover 5,000+ screens, get real-time audience signals from edge AI, create campaigns, and access closed-loop attribution. - **Category**: Marketing / Advertising - **Auth**: Optional Bearer token (free registrat

https://github.com/ByAxe/keynote-mcp

https://github.com/deadpixel/roundtable-dashboard/tree/main/apps/mcp

https://github.com/autonsol/sol-mcp

Persistent memory for AI agents with rollback, audit trails, semantic search, and a knowledge graph. Works locally out of the box with SQLite (no API key needed) or connects to the Novyx cloud for teams, sharing, and advanced features. 23 tools, 6 resources, 3 prompts — compatible with Claude Desktop, Claude Code, Cursor, Windsurf, and Cline.

https://github.com/zw008/VMware-Monitor

https://github.com/cseguinlz/doubletick-cli

https://github.com/Chill-AI-Space/vault-mcp

**564 tools. 26 services. 13 categories. Zero configuration. One natural language interface.**