Configuration

Configuration lives in .env at the repo root (start from .env.example). docker-compose.yml forwards these into the backend container.

Required

Variable	Meaning
ANTHROPIC_API_KEY	Your Claude API key. Without it the app runs but every call to Claude fails.

Which model runs where

Each kind of call runs on a model chosen for that kind of work. Calls whose output you review, and the web-research calls, run on Sonnet; calls that only read structured fields out of a previous call’s notes run on Haiku.

Call site	Default	What it does
selection_rewrite	Sonnet 5	Selection + Rewrite for a Generation
selection_preview	Sonnet 5	Selection-only preview
cover_letter	Sonnet 5	Cover letter drafting
ral_research	Sonnet 5	Salary-range research
ral_extraction	Haiku 4.5	Pulling the range out of those notes
application_method_inference	Haiku 4.5	How one applies
contact_research	Sonnet 5	Contact research
contact_extraction	Haiku 4.5	Pulling the contact out of those notes

Override one call site, or all of them:

SUMISURA_MODEL_SELECTION_REWRITE=claude-opus-5   # try Opus on Rewrite alone
SUMISURA_MODEL_DEFAULT=claude-haiku-4-5          # everything at once

A per-call-site variable beats SUMISURA_MODEL_DEFAULT, which beats the built-in default. Values are passed to the API unchanged — an unknown model id does not stop the backend starting, the affected call just fails with the API’s own error.

Restart the backend after changing .env.

What it costs

The app tracks usage and estimated cost per Generation and in total — see the usage view. Estimates come from a price table in the repo; a model missing from it estimates at $0 and logs a warning. Your actual bill is whatever Anthropic charges your key.

Other variables

Variable	Meaning
BIND_ADDR	127.0.0.1 by default. See LAN-reachable mode.
LAN_AUTH_TOKEN	Shared token required in LAN mode. Unset means the check is off.
DATA_DIR, PROJECT_ROOT	Where records and templates live; the defaults suit a normal checkout.