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The API for LLM tool use
OpenTools provides a single API to access a registry of MCP tools, enabling any LLM to use diverse tools (web search, real-time data, web scraping) with one line of code. It emphasizes compatibility with any LLM, resilience against outages, and unified billing for tool execution.
The API lets developers call a completions endpoint that can include tool references (MCP tools) to augment LLM responses. It supports one API key-free access to a registry of MCP servers, enables switching LLMs without code changes, and bills only for tool execution at cost through a unified billing portal. The workflow shows sending a chat-like request with model, messages, and an array of tools, and receiving augmented responses from the selected MCP tools.
Who it’s for: LLM-powered applications and developers requiring tool augmentation (web search, real-time data, web scraping) for any language model.
Beta access and public registration; mentions of joining beta and early access; mentions of status and community channels (GitHub, Discord) indicating early-stage traction.
Andy was the 7th employee at Modern Treasury (YC S18), where he helped build and scale the Ledgers product to a 7-figure ARR line of business. Before that, he was an engineer at Stripe (YC S09) where he worked on the API developer experience and Stripe Atlas.
Formerly “Odyssey AI”, “Humanlike” · why startups rename →
Call every LLM API like it's OpenAI [100+ LLMs]
Open source LLM engineering platform
