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Castia mark

Build Foundry agents without losing the Python loop.

Castia helps you make a local Python agent, prove it with tests and a canvas, then move it to Microsoft Foundry when you are ready.

Start with one real job. Put the agent in a scenario repo with the data, prompts, and tests that make the demo honest. Keep Castia as the reusable rail underneath it.

Make the agent

Scaffold a small Castia app, fill .env, and keep the model and instructions visible.

Try it locally

Start the app, check readiness, and use Foundry Agent Playground before any hosted work.

Move when ready

Deploy, tune, and publish only after local proof and explicit approval.

Castia gives you the SDK, starter scaffolds, Copilot skills, canvas extension, and deployment handoff docs. Your app repo brings the domain and the evidence.

Install the SDK

Create a starter agent and run it from .env.example to local health check.

Starter kit

Add the installable bundle for Copilot App users.

SDK map

See the agent, model, testing, eval, tuning, and deploy pieces.