Your AI agent writes code. Riza runs it safely.

Riza is the production-ready isolated runtime for agentic apps.

How it works

TypeScript and Python tend to get the best results.

Include command line args, stdin, files, and env vars.

Your response includes the exit code, stdout, and stderr.

A service for executing untrusted Python, JavaScript, TypeScript, Ruby and PHP.

Teams are using it to run code generated by LLMs, power data transformations, and extend their products for enterprise customers.

Code is executed inside an isolated WebAssembly context. Learn more in our security documentation.

Check out our product roadmap to see what we're working on.

Code only has access to data you provide, which includes command-line arguments, environment variables, files and stdin.
Read/write access to the `/mnt/req` directory, read-only access to the rest of the filesystem.
Only the Python runtime supports external packages. Other interpreters have access to the language's standard library.
Network access is limited to HTTP.
No support for alternative interpreter versions.
Execution time is limited to 30 seconds per invocation.
Memory consumption is limited to 128Mib per invocation.

We have a generous free teir. Beyond that, we charge based on usage. See our pricing page for full details.

Our full roadmap is available in our documentation, but here are some highlights:

[shipped] Add support for secrets and HTTP API credentials.
Allow further interpreter customization via third-party packages and dependencies.
Allow filesystem access, with customer-defined capability controls.

Please send us an email or join us on Discord if you have questions or suggestions.