Journey Functions

Stage 3e of the Butterbase journey that takes the Functions section from your plan doc and actually builds them. It calls function-dev for each function in sequence, deploys via deploy_function, and smoke tests HTTP/cron endpoints with invoke_function. The nice bit is it checks whether you should be using built-in integrations (email, Slack, payments) before you write custom code. One function at a time, asks for confirmation before each, logs everything to build-log.md. If your plan has no functions, the journey orchestrator skips this stage entirely. The anti-patterns section calling out "must return new Response" tells you this was written after someone got bitten by that.

GitHub stars: 532
last updated: Jun 11, 2026

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Install

$ npx -y skills add butterbase-ai/butterbase-skills --skill journey-functions --agent claude-code

Installs into .claude/skills of the current project.

Files

Journey: Functions

Stage 3e of the guided journey. Implement and deploy each function in the plan.

When to use

Dispatched by journey when current_stage: functions.
Directly via /butterbase-skills:journey-functions.
Skipped (annotated (n/a)) if the plan lists no functions.

Preflight

If docs/butterbase/03-preflight.md is missing, older than 24 hours, or 00-state.md has app_id: null, invoke butterbase-skills:journey-preflight first. Wait for it to return successfully before proceeding.

Inputs

docs/butterbase/02-plan.md — the Functions section.
docs/butterbase/00-state.md — for app_id.

Procedure

Refresh docs. Call butterbase_docs with topic: "functions". For trigger types and ctx shape, also WebFetch https://docs.butterbase.ai/functions. Skip if cache is fresh.

SKILL.md on GitHub