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Agent skill

Add Migration

by Pipelex in Pipelex/pipelex

Write a migration ledger entry for a configuration schema change in pipelex, so that a user's existing file can be repaired instead of thrown away.

Custom licenceAuto-check passedDevelopment

Install Add Migration

skills CLI
$ npx skills add Pipelex/pipelex --skill add-migration -a claude-code

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

GitHub CLI
$ gh skill install Pipelex/pipelex add-migration --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/Pipelex/pipelex.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/add-migration .claude/skills/add-migration && 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
add-migration
GitHub stars
939
Token cost
~3.8k tokens
SKILL.md length
2,131 words
Files
1
Skills in repo
6
Repo updated
First seen
Licence
Custom licence

At a glance

Write a migration ledger entry for a configuration schema change in pipelex, so that a user's existing file can be repaired instead of thrown away.

  • Works in 7 steps: See what the gate says → Decide the safety → Write the entry → …
  • Make check-migration-schemas (alias cmig)
  • SKILL.md covers The one rule, Step 1: See what the gate says, Step 2: Decide the safety and Step 3: Write the entry, plus 6 more sections
  • Calls make and git

What it does

Add Migration is an agent skill from Pipelex/pipelex. Write a migration ledger entry for a configuration schema change in pipelex, so that a user's existing file can be repaired instead of thrown away. Use when make check-migration-schemas (alias cmig) or make check-ledger (alias cl) refuses a change, when the user says "add a migration", "write the ledger entry", "the coverage gate is failing", "bump the schema version", "migration entry", "the migration gate won't let me", "account for this schema change", or after any edit to a configuration model that removed a…

Its SKILL.md is about 3.8k 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 Development. The repository describes itself as: Build AI methods with your coding agent, then run them anywhere: as an MCP for chatbots, as a webapp for people, or via API for your software.

When your agent uses it

  • Make check-migration-schemas (alias cmig)
  • Make check-ledger (alias cl) refuses a change
  • The user says add a migration
  • Write the ledger entry

Example prompts

  • “add a migration”
  • “write the ledger entry”
  • “the coverage gate is failing”
  • “/add-migration”

Workflow steps

7 steps, taken from the step headings in SKILL.md.

  1. See what the gate says
  2. Decide the safety
  3. Write the entry
  4. When the reserved-path rule fires
  5. Regenerate the goldens
  6. Prove it
  7. The changelog

What it can do on your machine

Read from SKILL.md and the folder at commit 67cf575. 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:

    • make
    • git

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

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

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

  • Credentials

    Names no API keys, tokens, secrets or passwords.

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

Context cost

Add Migration loads about 3.8k tokens when it runs. Until then it costs about 168 tokens; SKILL.md has 2,131 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~168
When it runs · the whole SKILL.md, loaded when a task matches
~3.8k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 2,131 words (~3,829 tokens).

“A configuration surface — pipelex.toml and its tiers, telemetry.toml, the inference backend definitions in inference/backends/ — ships a checked-in ledger at pipelex/migration/ledgers/.toml recording, as data, every shape change it has ever undergone. A user's existing file is repaired by replaying…”

— opening of SKILL.md by Pipelex, Custom licence
name
add-migration

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/add-migration of Pipelex/pipelex.

Open the folder on GitHubat commit 67cf575

Compare with similar skills

Add Migration 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.

Add Migration compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Add Migration this skillPipelex/pipelex939—~3.8kAutomated safety check: PassCustom licence
Finishing a Development Branchobra/superpowers296k5 repos~1.9kAutomated safety check: PassMIT
Typescript Advanced Typesrolling-scopes/rsschool-app10k24 repos~4.2kAutomated safety check: PassMPL-2.0
PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k5 repos~1.1kAutomated safety check: PassMIT
Greplooponyx-dot-app/onyx32k4 repos~3.3kAutomated safety check: PassMIT

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Categories

Questions about Add Migration

What does Add Migration do?

Write a migration ledger entry for a configuration schema change in pipelex, so that a user's existing file can be repaired instead of thrown away. Add Migration is an agent skill from Pipelex/pipelex. Write a migration ledger entry for a configuration schema change in pipelex, so that a user's existing file can be repaired instead of thrown away.

When should I use Add Migration?

Add Migration fits situations like: make check-migration-schemas (alias cmig); make check-ledger (alias cl) refuses a change; the user says add a migration; write the ledger entry.

How do I install Add Migration in Claude Code?

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

How do I install Add Migration in Codex?

Run `npx skills add Pipelex/pipelex --skill add-migration -a codex`. Or copy the skill folder (.claude/skills/add-migration in Pipelex/pipelex) into .agents/skills/add-migration in your project. Codex loads it when a task matches its description.

Can I use Add Migration 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 Pipelex/pipelex --skill add-migration -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/add-migration, .gemini/skills/add-migration, .github/skills/add-migration and .opencode/skills/add-migration in your project.

What does Add Migration need to run?

Going by SKILL.md and its folder, Add Migration needs the command-line tools its instructions call (make and git).

Does Add Migration access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Add Migration 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 Add Migration use?

Add Migration has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Add Migration use?

About 3.8k tokens (SKILL.md is roughly 15k 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 Add Migration?

Skills that share tags, products or a category with Add Migration: Finishing a Development Branch (obra/superpowers, 296k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars), PR Babysitter (openinterpreter/openinterpreter, 69k stars) and Code Review Checklist (shareAI-lab/learn-claude-code, 78k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Add Migration?

Pipelex (a GitHub organization) maintains it in Pipelex/pipelex, which has 939 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 6, 2026.

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