> ## Documentation Index
> Fetch the complete documentation index at: https://ctrlrun.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# effect_state

> The rule (SPEC-v0.7 §2.1): `FAILED` for `NEVER_CONNECTED`, `AMBIGUOUS` for everything else.

`ctrlrun.transport.effect_state` — function, defined at `src/ctrlrun/transport.py:93`

```python theme={null}
from ctrlrun.transport import effect_state
```

```python theme={null}
def effect_state(observed: Transport) -> EffectState
```

The rule (SPEC-v0.7 §2.1): `FAILED` for `NEVER_CONNECTED`, `AMBIGUOUS` for everything else.

Decided by identity, so a string that merely equals a member's value is `AMBIGUOUS`.

## Next

* [Python API index](/docs/reference/api/index).
* [Get started](/docs/get-started/quickstart) · [Why](/docs/why).


## Related topics

- [Python API](/docs/reference/api/index.md)
- [EffectState](/docs/reference/api/EffectState.md)
- [Architecture](/docs/ARCHITECTURE.md)
- [How reservation works](/docs/production/how-reservation-works.md)
- [Claims](/docs/CLAIMS.md)