# `mix arrow.inspect`

Prints a summary of an Arrow IPC file or stream: format, schema
(field names, types, nullability), per-batch row counts, and
dictionary sizes.

    mix arrow.inspect path/to/data.arrow

The format is auto-detected: IPC files start with the `ARROW1`
magic, anything else is decoded as a stream. Exits non-zero with a
readable message on malformed or unsupported input.

Example output:

    format: file
    schema:
      d: dictionary<utf8, indices=int8, id=0> (nullable)
    batches: 1, 6 rows total
      [0] 6 rows
    dictionaries:
      [0] 3 values, referenced by "d"

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*Consult [api-reference.md](api-reference.md) for complete listing*