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

# Python Library

> axl-core: compress, decompress, parse, validate, emit.

## Installation

```bash theme={null}
pip install axl-core
```

## Modules

| Module           | Description                                       |
| ---------------- | ------------------------------------------------- |
| `axl.compress`   | English to AXL compression                        |
| `axl.decompress` | AXL to English expansion                          |
| `axl.parse`      | Packet parser returning typed fields              |
| `axl.validate`   | Packet validation against grammar                 |
| `axl.emit`       | Programmatic packet construction                  |
| `axl.rosetta`    | Rosetta loader and prompt builder                 |
| `axl.convert`    | Translators for OpenAI, Claude, LangGraph formats |

## Packet Object

```python theme={null}
from axl import parse

pkt = parse("ID:WHL-01|OBS.95|!whale_move|@whale.CW2024|^2400BTC=>exchange|NOW")

pkt.id          # "WHL-01"
pkt.operation   # "OBS"
pkt.confidence  # 0.95
pkt.subject     # "!whale_move"
pkt.relation    # ""
pkt.evidence    # "@whale.CW2024"
pkt.temporal    # "NOW"
pkt.raw         # full original string
```

## Emit Packets

```python theme={null}
from axl import emit

pkt = emit(
    id="ANALYST-01",
    operation="INF",
    confidence=82,
    subject="#CA125",
    evidence="<-!scan+#8.1x_baseline",
    temporal="1W"
)
print(pkt)  # ID:ANALYST-01|INF.82|#CA125|<-!scan+#8.1x_baseline|1W
```

## Load Rosetta

```python theme={null}
from axl.rosetta import load_rosetta, build_agent_prompt

rosetta = load_rosetta()  # Loads from disk or fetches from URL
prompt = build_agent_prompt(rosetta, "Dr.Chen", "Oncologist", seed_text="...")
```