YC Spring 2026 (P26) company

Armature

Armature builds, monitors and optimizes products' Agent Experience.

b2bengineering, product and designdeveloper tools7 public signals

About Armature

Armature helps companies monitor, analyze, and optimize how AI agents experience their products. What we do today: - Automated testing: We run complex sessions against your MCPs/CLIs across all major harnesses and models to catch broken workflows before your users do. - AX analytics & benchmarking: No more black boxes. We trace agent sessions to show you exactly what the model "thought", what context it missed, and why it failed. We measure your AX against competitors to ensure you remain the preferred platform for agents to use. - Auto-remediation: Our MCP lets your internal coding agents plug into Armature to autonomously fix your product's AX based on our run data. Our vision for tomorrow: Reaching full understanding of how agents use your product and how you can improve it is only step one. The next step is to provide the foundational infrastructure for the Agent Experience, powering agent-native revenue, lifecycle marketing, and customer support for the next generation of software.

Public traction evidence

Each signal links to the public source used for attribution.

  1. LinkedIn

    Armature is joining Y Combinator

    Founder post says Armature (YC P26) is joining Y Combinator and names cofounder Louis.

  2. X

    Garry Tan native X post mentioning Armature

    I see me tagged in this photo and I like it

  3. LinkedIn

    I bet Theodore and Armature (YC P26) will be one of the most oversubscribed companies at the next Y Combinator demo day 🤓

    [Skip to main content](https://linkedin.com/posts/activity-7459281446504120320-Vl97#main-content)[LinkedIn](https://linkedin.com/?trk=[redacted-public-param]) * [Top Content](https://www.linkedin.com/top-content?trk=[redacted-public-param]) *...

  4. X

    Extremely interesting data from @OpenRouter: by token spend, use-cases are dominated strictly by @OpenAI and @AnthropicAI. But by token ...

    Extremely interesting data from @OpenRouter: by token spend, use-cases are dominated strictly by @OpenAI and @AnthropicAI. But by token usage, Chinese models win it all. When price will become a top reason to choose models, a real war will begin.

  5. YouTube

    Armature - Launch video

    Armature helps companies monitor, analyze, and optimize how AI agents experience their products. It runs real agent workflows & benchmarks to give concrete actions to improve your MCP and CLI.

  6. X

    C’est vous @FFLose qui avez infiltré ?

    C’est vous @FFLose qui avez infiltré ?

  7. X

    Merci pour le rappel @MonPetitGazon

    Merci pour le rappel @MonPetitGazon