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  "markdown": "Co-founder and CTO, LangWatch.\n\nRogerio Chaves is co-founder and chief technology officer of LangWatch. He spent years at Booking.com, where he helped build its first AI agents, and before that was an engineer at ThoughtWorks, working across React, TypeScript, GraphQL and machine learning.\n\n- LinkedIn: https://www.linkedin.com/in/rgrchvs/\n- GitHub: https://github.com/rogeriochaves\n\n## What Rogerio builds\n\n- [LangWatch](https://www.anchorterminal.com/tools/langwatch.md), graded B, 65.6/100, in Agent observability \u0026 evals. LangWatch is an open-source platform for tracing, evaluating and testing LLM applications and agents, with prompt management, datasets and an AI gateway. It runs hosted or self-hosted, with a REST API, SDKs, a CLI and an MCP server. Co-founder and CTO, LangWatch, researched 2026-10-28.\n\n## Works with\n\n- [Manouk Draisma](https://www.anchorterminal.com/people/manouk-draisma/), Co-founder and CEO, LangWatch\n\n## Backed by\n\n- [Passion Capital](https://www.anchorterminal.com/investors/passion-capital/)\n- [Volta Ventures](https://www.anchorterminal.com/investors/volta-ventures/)\n- [Antler](https://www.anchorterminal.com/investors/antler/)\n\n## Questions\n\n### Who is Rogerio Chaves?\n\nRogerio Chaves is co-founder and chief technology officer of LangWatch. He spent years at Booking.com, where he helped build its first AI agents, and before that was an engineer at ThoughtWorks, working across React, TypeScript, GraphQL and machine learning.\n\n### What does Reasoning Engine B.V. (LangWatch) make?\n\nAnchor Terminal lists LangWatch from Reasoning Engine B.V. (LangWatch). LangWatch is an open-source platform for tracing, evaluating and testing LLM applications and agents, with prompt management, datasets and an AI gateway. It runs hosted or self-hosted, with a REST API, SDKs, a CLI and an MCP server.\n\n### Who has invested in Reasoning Engine B.V. (LangWatch)?\n\nThe sources our research read name Passion Capital, Volta Ventures and Antler.\n\n### How are Rogerio's tools graded?\n\nLangWatch is graded B, 65.6 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://langwatch.ai/about-us\n\nThese are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.\n",
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