Hi HN! We’re Theodore and Louis, founders of Armature (YC P26). We reconstruct the entire session behind the MCP tool calls you receive, including what the user asked their agent to do and what the agent thought.You wrap your MCP in 3 lines of code (our SDK is available in Typescript, Python and Go) and start seeing in your dashboard: All sessions reconstructed: it’s like reading the real conversation the user had inside Claude or ChatGPT! A ranking of your MCP most popular use cases, built from sessions clustering The most frequent issues your users’ agents encounter so you can fix them.Here is a quick demo: https://youtu.be/ZFlvquhyNMQThe story behind this is that we initially launched Armature as a standalone testing tool (https://www.ycombinator.com/launches/QQc-armature-making-you...) that could naturally be used through an MCP itself.

We quickly realized we had no idea how our users were using Armature MCP and if they were satisfied with it or frustrated. It’s something we had also experienced in our previous companies: Louis built MCPs exposed to millions of users and Theo was a Forward Deployed Engineer at Palantir before joining a…