# 12 Workflow Compile

Script: `example/12_compile.py`.

`Workflow.compile()` performs a static pass over the registered module tree.
It does not run a model or create a session, so the bundled example works
without a real API key.

```bash
python example/12_compile.py
```

```python
compiled = workflow.compile()

print(compiled.manifest.provider_models())
print(compiled.manifest.provider_kinds())
print(compiled.manifest.agents)
print(compiled.manifest.dynamic_nodes)

problems = compiled.validate()
compiled.validate(raise_on_error=True)

with workflow.compile() as live:
    result = live(session)
```

| Surface | Meaning |
| --- | --- |
| `manifest.agents` | Reachable `AgentParam` snapshots with path, provider, memory flag, and prompt-session id. |
| `manifest.dynamic_nodes` | Known dynamic boundaries such as `Selector`; compile does not predict their targets. |
| `validate()` | Offline provider-kind and credential checks only. |
| context manager | Acquires each distinct bound memory store and releases it in reverse order. |
| `compiled(session)` | Delegates to the current wrapped workflow. |

```{admonition} Static snapshot, not an execution plan
:class: important

The manifest reflects the module tree and providers at compile time. Recompile
after rebinding providers or changing the structure. Validation does not test
model names, network access, sandboxes, tools, memory health, or Selector
targets.
```

LiteLLM is treated as credential-resolvable during preflight because it may use
provider-specific environment variables internally. A custom registered kind
uses the OpenAI-compatible credential resolver in v1.3.0.

[← Runnable Examples](index.md)