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weatherreporter/docs/integrations/scriptorium.md

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# Scriptorium Integration
This document describes the external Scriptorium CLI contract used by
`weatherreporter`.
## Purpose
`weatherreporter` invokes Scriptorium as a subprocess to preflight prompt input
and generate report artifacts. This page documents the CLI surface the adapter
uses, not the full Scriptorium product.
## Commands Used
Render preflight:
```bash
scriptorium render \
--prompt <prompt_id> \
--input data_package=<path> \
--format json
```
Report generation:
```bash
scriptorium run \
--prompt <prompt_id> \
--input data_package=<path> \
--out <artifact_path>
```
Structured generated-text report generation uses the same command shape:
```bash
scriptorium run \
--prompt <prompt_id> \
--input data_package=<path> \
--out <generated_text_raw_path>
```
`weatherreporter` always passes prompt input as
`--input data_package=<path>`. The data package is structured YAML created by
`internal/promptinput`; module snapshots remain separate JSON artifacts for
inspection and Recent Changes.
For generated-text reports, Scriptorium selects the structured output schema
from the prompt configuration associated with the prompt ID. `weatherreporter`
does not pass `--format`, schema path, or JSON Schema flags for structured
generation.
## Configured Arguments
The adapter can prepend configured flags before prompt-specific arguments:
- `--config <path>` from `scriptorium.config_path`
- `--profile <profile>` from `scriptorium.profile`
It appends `scriptorium.extra_args` after the built-in arguments. Extra
arguments are passed directly as argv items.
`scriptorium.binary` selects the executable name or path. If unset inside the
adapter, it falls back to `scriptorium`.
## Execution Behavior
The adapter runs Scriptorium without shell interpolation. Arguments are passed
through `exec.CommandContext`.
`scriptorium.timeout` limits each subprocess call when configured. Context
cancellation or timeout returns an execution error.
Stdout and stderr are captured separately. Each stream is capped at 1 MiB and
the result records whether truncation occurred.
## Results
Render results include:
- full argv recorded as `command`
- stdout
- stderr
- exit code
- truncation flags when applicable
Run results include the same fields plus the requested output path. Structured
generated-text run results use the same captured fields and output-path
recording, with the output path pointing at the raw generated-text JSON
artifact.
`weatherreporter` persists render preflight JSON when orchestration reaches the
preflight save point. For direct Markdown reports, Scriptorium writes the
managed Markdown artifact to the `--out` path. For generated-text-template
reports, Scriptorium writes raw JSON to the `--out` path; later
weatherreporter workflow steps validate those bytes and render Markdown from an
embedded template.
## Failure Behavior
The adapter validates required request fields before starting Scriptorium:
- prompt ID
- data package path
- output path for `run` and structured generated-text `run`
Nonzero exits return both the captured result and an error containing the exit
code and stderr. A `run` exit code such as `2` is still treated as an error by
the adapter, even if Scriptorium wrote output to the requested artifact path.
Subprocess start failures, context cancellation, and timeouts return errors
without fabricating a successful result.
## Security Notes
- The adapter does not invoke a shell.
- Generated artifacts, rendered prompt context, stdout, and stderr can contain
operationally sensitive data.
- API keys should be provided through the Scriptorium environment or
Scriptorium configuration, not through `weatherreporter` CLI arguments.