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journey-auth

journey-auth is a skill for Claude Code from butterbase-ai/butterbase-skills. It costs 77 tokens per session (611 once invoked), scanned A, original, MIT.

A guided setup stage for configuring user sign-in for a Butterbase app. It can set up supported OAuth providers, which let users sign in through another service, and optional authentication hooks.

In plain words
What is it for?
Use it when an app needs end-user accounts, such as sign-in with Google, GitHub, or Apple.
Why use it?
It turns the authentication choices in an app plan into configured login settings and related account behavior.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the butterbase-skills plugin — 23 skills, 33 commands shipped together

not rated 533repo 2mo ago A scan SkillSpector: pass 77 tokens original MIT

Good fit Use it when an app needs end-user accounts, such as sign-in with Google, GitHub, or Apple.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/butterbase-ai/butterbase-skills/journey-auth
View source ↗ butterbase-ai/butterbase-skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add butterbase-ai/butterbase-skills --skill journey-auth
Clone the repo
git clone --depth 1 https://github.com/butterbase-ai/butterbase-skills

Made for: Claude Code.

Or install butterbase-skills, the plugin that ships this one along with the rest of its 23 skills, 33 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for journey-auth

README.md
[![agentmods](https://agentmods.dev/badge/skills/butterbase-ai/butterbase-skills/journey-auth/github.svg)](https://agentmods.dev/skills/butterbase-ai/butterbase-skills/journey-auth)
Your own site
<a href="https://agentmods.dev/skills/butterbase-ai/butterbase-skills/journey-auth"><img src="https://agentmods.dev/badge/skills/butterbase-ai/butterbase-skills/journey-auth/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for journey-auth

Your own site · 80×15
<a href="https://agentmods.dev/skills/butterbase-ai/butterbase-skills/journey-auth"><img src="https://agentmods.dev/badge/skills/butterbase-ai/butterbase-skills/journey-auth.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 611 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00077 $0.00611
Opus 5 $0.00039 $0.00305
Sonnet 5 $0.00015 $0.00122
Haiku 4.5 $0.00008 $0.00061

Measured 12d ago against content hash 0ba81141c7c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

journey-auth scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/journey-auth/SKILL.md · 47 lines

What it actually says

Journey: Auth

Stage 3c of the guided journey. Configure OAuth providers and (optionally) auth hooks.

When to use

  • Dispatched by journey when current_stage: auth.
  • Directly via /butterbase-skills:journey-auth.
  • Skipped (annotated (n/a) in 00-state.md) if the plan has no end-user auth.

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 Auth section.
  • docs/butterbase/00-state.md — for app_id.

Procedure

  1. Refresh docs. Call butterbase_docs with topic: "auth". For provider-specific setup (Google/GitHub/Apple), also WebFetch https://docs.butterbase.ai/auth. Skip if cache is fresh.

  2. Read the Auth section of 02-plan.md. Print it back: "About to configure auth: providers=<list>, demo_user=<yes/no>. Proceed?". Wait for yes.

  3. Invoke butterbase-skills:auth-setup via the Skill tool, passing the Auth plan and app_id. The wrapped skill will prompt for each provider's client ID/secret and call manage_oauth action: configure. If a demo user is requested, it seeds one via insert_row on the users table.

  4. After it returns, run manage_oauth action: get to confirm and print the redirect URLs the user must register with each provider.

  5. Append one line to docs/butterbase/04-build-log.md: <ISO timestamp> auth manage_oauth ok

  6. Tick - [x] auth in 00-state.md, set current_stage: to the next unchecked stage.

  7. Return to journey orchestrator (or ask "Continue to the next stage? (yes/no)").

Outputs

  • Configured OAuth providers.
  • Optional seed user.
  • One line in 04-build-log.md.

Anti-patterns

  • ❌ Echoing OAuth client secrets back to the user.
  • ❌ Forgetting to give the user the provider-side redirect URL — auth will silently fail without it.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 47 lines · 77 tokens per session scan A 0ba81141c7c5

Subscribe to this mod's changes

journey-auth is a skill published in the GitHub repository butterbase-ai/butterbase-skills (533 stars, last pushed 2mo ago), licensed MIT. It adds 77 tokens to every session and 611 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Backend and APIsClaude CodeSecurityagent-skillsai-agentsbackend-as-a-serviceclaudemcp
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