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journey-preflight

journey-preflight is a skill for Claude Code from butterbase-ai/butterbase-skills. It costs 83 tokens per session (1,029 once invoked), scanned A, original, MIT.

A setup check for using the Butterbase app platform. It verifies the account, connection, access key, and project app ID needed for platform actions.

In plain words
What is it for?
Use it before creating, building, or deploying a Butterbase app when you need to confirm that the project can access the platform.
Why use it?
It finds missing access or configuration before later build stages fail. It also records the checks and asks for failed items to be fixed.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code.

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

not rated 533repo 2mo ago A scan SkillSpector: warn 83 tokens original MIT

Good fit Use it before creating, building, or deploying a Butterbase app when you need to confirm that the project can access the platform.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/butterbase-ai/butterbase-skills/journey-preflight
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-preflight
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-preflight

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/butterbase-ai/butterbase-skills/journey-preflight"><img src="https://agentmods.dev/badge/skills/butterbase-ai/butterbase-skills/journey-preflight.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,029 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 warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 19
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 21
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
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 $0.00083 $0.01029
Opus 5 $0.00042 $0.00515
Sonnet 5 $0.00017 $0.00206
Haiku 4.5 $0.00008 $0.00103

Measured 13d ago against content hash fddf50960a9e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

journey-preflight 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 13d 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-preflight/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Butterbase Preflight

Gate that ensures the user can actually talk to the Butterbase platform before any stage tries to. Writes results to docs/butterbase/03-preflight.md and stamps app_id + api_base into 00-state.md.

When to use

  • Automatically as the first step of any journey-* build stage when 03-preflight.md is missing, older than 24 hours, or 00-state.md's app_id is null.
  • Directly via /butterbase-skills:journey-preflight when the user wants to re-verify.

Procedure

For each check, write a one-line result to 03-preflight.md (<check> ✓/✗ <note>). Ask the user to fix any ✗ before continuing — do not auto-skip failures.

  1. Butterbase account. Call mcp__butterbase__list_regions (cheapest call). Success → ✓. Auth error → ✗ with "Sign up at https://butterbase.ai, then run npx @butterbase/cli mcp install and complete the OAuth flow in your client (e.g. /mcp in Claude Code).". If MCP tool is not visible at all, jump to step 2.

  2. MCP server connected. Check whether mcp__butterbase__* tools are listed in the agent's available tools. Absent → ✗ with "Install the Butterbase MCP server: npx @butterbase/cli mcp install. See https://butterbase.ai/docs/mcp.". Present → ✓.

  3. MCP OAuth complete. Auth for mcp__butterbase__* calls is OAuth, not an env var — step 1 already proved it works if list_regions succeeded. If step 1 failed with auth error, retry after the user runs /mcp (or claude mcp login butterbase) and completes browser consent. BUTTERBASE_API_KEY (bb_sk_…) is still relevant for runtime app code (functions, server-side @butterbase/sdk) — check separately at deploy time, not here.

  4. App provisioned. Read 00-state.md front-matter for app_id.

    • Non-null and mcp__butterbase__manage_app (action get_config) succeeds → ✓.
    • Null → ask the user: "No app yet. Create one now? (yes/no — if no, you can paste an existing app_id)". On yes, call mcp__butterbase__init_app (ask for app name and region — recommend us-east-1 as default). Capture app_id and api_base from the response. Update 00-state.md front-matter.
    • User-provided app_id → verify with manage_app get_config; on success update 00-state.md.

Read the full file on GitHub · 57 lines

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. 13d ago First seen · 57 lines · 83 tokens per session scan A fddf50960a9e

Subscribe to this mod's changes

journey-preflight is a skill published in the GitHub repository butterbase-ai/butterbase-skills (533 stars, last pushed 2mo ago), licensed MIT. It adds 83 tokens to every session and 1,029 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.

Claude Codeagent-skillsai-agentsbackend-as-a-serviceclaudemcp
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