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Agent skill

Journey Preflight

by butterbase-ai in butterbase-ai/butterbase-skills

Use before any Butterbase platform-touching action (or when journey-preflight is invoked directly) to verify the user has a Butterbase account, the MCP server is connected, BUTTERBASEAPIKEY is set…

MITAuto-check passedAgent Workflows

Install Journey Preflight

skills CLI
$ npx skills add butterbase-ai/butterbase-skills --skill journey-preflight -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install butterbase-ai/butterbase-skills journey-preflight --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/butterbase-ai/butterbase-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/journey-preflight .claude/skills/journey-preflight && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
journey-preflight
GitHub stars
534
Token cost
~926 tokens
SKILL.md length
408 words
Files
1
Skills in repo
39
Repo updated
First seen
Licence
MIT

At a glance

Use before any Butterbase platform-touching action (or when journey-preflight is invoked directly) to verify the user has a Butterbase account, the MCP server is connected, BUTTERBASEAPIKEY is set…

  • Works in 5 steps: Butterbase account. Call… → MCP server connected. Check whether… → MCP OAuth complete. Auth for… → …
  • Tasks that involve MCP servers
  • SKILL.md covers When to use, Procedure, 03-preflight.md format and Outputs, plus 1 more section
  • Calls claude and npm; reaches butterbase.ai; needs BUTTERBASE_API_KEY

What it does

Journey Preflight is an agent skill from butterbase-ai/butterbase-skills. Use before any Butterbase platform-touching action (or when journey-preflight is invoked directly) to verify the user has a Butterbase account, the MCP server is connected, BUTTERBASEAPIKEY is set, and an appid exists for this project. Re-run automatically if docs/butterbase/03-preflight.md is older than 24h or any required value is null.

Its SKILL.md is about 930 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering MCP servers. It works with Model Context Protocol. The repository describes itself as: Plugin for Butterbase.ai. The licence is MIT.

When your agent uses it

  • Tasks that involve MCP servers

Example prompts

  • “/journey-preflight”

Requirements

  • Node.js
  • A credential in BUTTERBASE_API_KEY

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Butterbase account. Call mcpbutterbaselist_regions (cheapest call). Success → ✓. Auth error → ✗ with "Sign up at https://butterbase.ai…
  2. MCP server connected. Check whether mcpbutterbase* tools are listed in the agent's available tools. Absent → ✗ with "Install the…
  3. MCP OAuth complete. Auth for mcpbutterbase* calls is OAuth, not an env var — step 1 already proved it works if list_regions succeeded. If…
  4. App provisioned. Read 00-state.md front-matter for app_id.
  5. CLI installed. Run butterbase --version. If "command not found"

What it can do on your machine

Read from SKILL.md and the folder at commit aa8ae69. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • claude
    • npm

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • butterbase.ai

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • BUTTERBASE_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Journey Preflight loads about 926 tokens when it runs. Until then it costs about 90 tokens; SKILL.md has 408 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~90
When it runs · the whole SKILL.md, loaded when a task matches
~926

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from butterbase-ai/butterbase-skills at commit aa8ae69, republished under its MIT licence (© butterbase-ai). 408 words, ~926 tokens.

Download SKILL.mdSave it as .claude/skills/journey-preflight/SKILL.md (or your agent's skills folder).
name
journey-preflight
description
Use before any Butterbase platform-touching action (or when journey-preflight is invoked directly) to verify the user has a Butterbase account, the MCP server is connected, BUTTERBASE_API_KEY is set, and an app_id exists for this project. Re-run automatically if docs/butterbase/03-preflight.md is older than 24h or any required value is null.

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.

  5. CLI installed. Run butterbase --version. If "command not found":

    • Read the Toolchain section of 02-plan.md. If CLI usage: yes (default), prompt: "Install @butterbase/cli globally now? (yes / skip)". On yes, run npm install -g @butterbase/cli. On skip, note in 03-preflight.md that the CLI is not installed and which workflows will require dashboard fallback.
    • If CLI usage: no, skip this check.
Show full SKILL.md (54 more words)Show less

03-preflight.md format

markdown
# Preflight — <ISO date>

- account        ✓
- mcp_connected  ✓
- api_key        ✓
- app_provisioned ✓  app_id=app_abc123 region=us-east-1

Re-run with /butterbase-skills:journey-preflight.

Outputs

  • Writes/overwrites docs/butterbase/03-preflight.md.
  • Updates 00-state.md front-matter app_id, api_base, last_updated, and ticks - [x] preflight.

Anti-patterns

  • ❌ Echoing the API key value back to the user.
  • ❌ Skipping a failed check ("I'll just try anyway"). Stop and ask the user to fix it.
  • ❌ Calling init_app without confirming with the user — apps cost money on paid plans.

© butterbase-ai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/journey-preflight of butterbase-ai/butterbase-skills.

Open the folder on GitHubat commit aa8ae69

Compare with similar skills

Journey Preflight next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Journey Preflight compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Journey Preflight this skillbutterbase-ai/butterbase-skills534—~926Automated safety check: PassMIT
MCP Server Builderanthropics/skills180k63 repos~2.3kAutomated safety check: PassApache-2.0
MCP Server BuildershareAI-lab/learn-claude-code78k4 repos~1.2kAutomated safety check: PassMIT
MCP Integration for Pluginsanthropics/claude-plugins-official38k11 repos~3.1kAutomated safety check: PassApache-2.0
Crush Configurationcharmbracelet/crush29k—~3.7kAutomated safety check: PassCustom licence
Context Mode Output Sandboxmksglu/context-mode26k—~4.1kAutomated safety check: PassCustom licence

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Works with

Categories

Questions about Journey Preflight

What does Journey Preflight do?

Use before any Butterbase platform-touching action (or when journey-preflight is invoked directly) to verify the user has a Butterbase account, the MCP server is connected, BUTTERBASEAPIKEY is set…. Journey Preflight is an agent skill from butterbase-ai/butterbase-skills. Use before any Butterbase platform-touching action (or when journey-preflight is invoked directly) to verify the user has a Butterbase account, the MCP server is connected, BUTTERBASEAPIKEY is set, and an appid exists for this project.

When should I use Journey Preflight?

Journey Preflight fits situations like: tasks that involve MCP servers.

How do I install Journey Preflight in Claude Code?

Run `npx skills add butterbase-ai/butterbase-skills --skill journey-preflight -a claude-code`. Or copy the skill folder (skills/journey-preflight in butterbase-ai/butterbase-skills) into .claude/skills/journey-preflight in your project. Claude Code loads it when a task matches its description.

How do I install Journey Preflight in Codex?

Run `npx skills add butterbase-ai/butterbase-skills --skill journey-preflight -a codex`. Or copy the skill folder (skills/journey-preflight in butterbase-ai/butterbase-skills) into .agents/skills/journey-preflight in your project. Codex loads it when a task matches its description.

Can I use Journey Preflight in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add butterbase-ai/butterbase-skills --skill journey-preflight -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/journey-preflight, .gemini/skills/journey-preflight, .github/skills/journey-preflight and .opencode/skills/journey-preflight in your project.

What does Journey Preflight need to run?

Going by SKILL.md and its folder, Journey Preflight needs the command-line tools its instructions call (claude and npm) and credentials named BUTTERBASE_API_KEY. Our summary lists: Node.js; A credential in BUTTERBASE_API_KEY.

Does Journey Preflight access the network?

SKILL.md names 1 domain. In commands or code: butterbase.ai; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Journey Preflight safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Journey Preflight use?

Journey Preflight is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Journey Preflight use?

About 926 tokens (SKILL.md is roughly 3.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Journey Preflight?

Skills that share tags, products or a category with Journey Preflight: MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars), MCP Integration for Plugins (anthropics/claude-plugins-official, 38k stars) and Crush Configuration (charmbracelet/crush, 29k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Journey Preflight?

butterbase-ai (a GitHub organization) maintains it in butterbase-ai/butterbase-skills, which has 534 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 5, 2026.

Source: butterbase-ai/butterbase-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.