Convex Migration Helper

What it does

When your agent uses it

• Breaking schema changes
• Table reshaping
• Zero-downtime rollouts

Example prompts

• “Use the convex-migration-helper skill to plan Convex schema and data migrations with widen-migrate-narrow and @convex-dev/migrations”
• “/convex-migration-helper”

Workflow steps

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

1. 1Update schema to allow both old and new formats (e.g., add optional new
2. 2Update code to handle both formats when reading
3. 3Update code to write the new format for new documents
4. 4Deploy

What it can do on your machine

Read from SKILL.md and the folder at commit 665a13f. 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

  No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

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

• Network

  Links to these hosts (documentation or services it may open):

  • convex.dev

  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

Convex Migration Helper loads about 1.4k tokens when it runs, and up to ~4k if it reads all its reference files. Until then it costs about 51 tokens; SKILL.md has 724 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~51

When it runs · the whole SKILL.md, loaded when a task matches

~1.4k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~4k

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

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 spokvulcan/poker-planning at commit 665a13f, republished under its MIT licence (© spokvulcan). 724 words, ~1,446 tokens.

name

convex-migration-helper

description

Plans Convex schema and data migrations with widen-migrate-narrow and @convex-dev/migrations. Use for breaking schema changes, backfills, table reshaping, or zero-downtime rollouts.

// Before
users: defineTable({
  name: v.string(),
});

// After - safe, new field is optional
users: defineTable({
  name: v.string(),
  bio: v.optional(v.string()),
});

posts: defineTable({
  userId: v.id("users"),
  title: v.string(),
}).index("by_user", ["userId"]);

users: defineTable({
  name: v.string(),
  email: v.string(),
}).index("by_email", ["email"]);

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

Files

SKILL.md and 4 other files (references, assets) in .agents/skills/convex-migration-helper of spokvulcan/poker-planning.

• SKILL.md
• agents/openai.yaml
• assets/icon.svg
• references/migration-patterns.md
• references/migrations-component.md

Open the folder on GitHubat commit 665a13f

Used in 8 other repositories

We found 9 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 8 other GitHub owners. This page covers the copy in spokvulcan/poker-planning, which our catalogue first saw on October 7, 2026.

• ajanraj/OpenChat.agents/skills/convex-migration-helper
• waynesutton/markdown-site.agents/skills/convex-migration-helper
• openclaw/clawhub.agents/skills/convex-migration-helper
• vvedantb/eva.agents/skills/convex-migration-helper
• bholmesdev/hubble.mdpackages/sync-backend/.agents/skills/convex-migration-helper
• raroque/boop-agent.agents/skills/convex-migration-helper
• SchroederNathan/amber.agents/skills/convex-migration-helper.claude/skills/convex-migration-helper
• aiskillstore/marketplaceskills/get-convex/convex-migration-helper