Why do I get a 401 Unauthorized error?

Check if your AgentLLM key is valid and correctly passed in the Authorization header. You can regenerate the key under Test → LLM → Keys.

Why is the wrong version of my agent responding?

Check the 'model' string in your request. Make sure you're using the correct version tag like @dev, @prod, or @1.0.

Confirm that your agent is correctly configured and LLM is toggled on. Then inspect logs under Deployments → Logs.

Go to Test → LLM → Code. Always copy the baseURL and model directly from there to avoid typos or environment mismatches.

Choose Your Path

You can start building with the SmythOS Runtime Environment (SRE) in two ways:

Option	Best For	Why Choose It
CLI Recommended	Beginners, quick prototyping, CI/CD pipelines	Guided setup, no boilerplate, works with Studio and SDK
SDK	Developers with existing Node.js projects, advanced customization	Fine-grained control, direct integration into your codebase

The CLI is the simplest way to create and configure new agent projects.

npm install -g @smythos/cli

sre create

Step-by-Step Guidance

The CLI prompts you for language, project name, and configuration.
It sets up everything needed so you can focus on building your agent.

If you’re adding SRE to an existing Node.js project, install the SDK directly:

npm install @smythos/sdk

pnpm install @smythos/sdk

When to choose the SDK

Use the SDK install method if:

You’re integrating into an existing codebase
You need fine-grained control over configuration
For new projects, the CLI is recommended.

After installing either method, you can verify the environment:

sre --version

For SDK installs, confirm your dependency is listed in package.json.

Common mistake

If sre is not recognized, make sure your npm global bin directory is in your PATH.

Once you’ve installed and verified your setup, you’re ready to build and run your first agent.

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