migrate-to-meteor-3

82 / 100 · Low risk

Fine to try.

By meteor/agent-skills (GitHub) · coding · 11 stars · scanned at commit 0b022e1

Use when migrating a Meteor 2.x application to Meteor 3.x. Triggers on callAsync, *Async Mongo, removed Fibers, implicit-global ReferenceError, lost Blaze reactivity, a publish function returning a Promise, a scheduler dropping a Promise, a read API receiving update modifiers, async allow/deny, an Iron Router controller not running, "Method stub took too long", Atmosphere resolution, Express 5 WebApp handlers, lost async context, rawCollection callbacks, TypeScript declaration failures during u…

Works with any agent that supports SKILL.md skills.

What this skill can do

Sends data to these websites: install.meteor.com

This is disclosed by the author in the skill's SKILL.md or README.

Found in 10 places.

skills/migrate-to-meteor-3/references/async-cheatsheet.md, line 7| Mongo read | `c.find(q).fetch()` | `await c.find(q).fetchAsync()` |
skills/migrate-to-meteor-3/references/async-rewrites.md, line 210const res = await fetch(url, { headers });
skills/migrate-to-meteor-3/references/call-vs-callAsync.md, line 70- `fetch` and `XMLHttpRequest`

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skills/migrate-to-meteor-3/references/eval-cases.md, line 17return Posts.find({ published: true }).fetch();
skills/migrate-to-meteor-3/references/eval-cases.md, line 393Prompt: "Our Linux setup uses `curl https://install.meteor.com/ | sh`. Must we
skills/migrate-to-meteor-3/references/js-iterators.md, line 112those instead of converting a `cursor.fetch()` array to a Promise loop:
skills/migrate-to-meteor-3/references/other-breaking-changes.md, line 221`curl https://install.meteor.com/ | sh` command remains an alternative for
skills/migrate-to-meteor-3/references/react-migration.md, line 24const posts = useTracker(() => Posts.find().fetch());
skills/migrate-to-meteor-3/references/react-migration.md, line 73React components that call `Collection.find().fetch()` directly on the
skills/migrate-to-meteor-3/references/removed-functions.md, line 10| `Collection.find(q).fetch()` | `await Collection.find(q).fetchAsync()` |

Downloads and installs other software

The author does not mention this.

Found in 4 places.

skills/migrate-to-meteor-3/references/eval-cases.md, line 393Prompt: "Our Linux setup uses `curl https://install.meteor.com/ | sh`. Must we
skills/migrate-to-meteor-3/references/eval-cases.md, line 396Pass if the agent says `npx meteor` is the primary cross-platform command but
skills/migrate-to-meteor-3/references/other-breaking-changes.md, line 220Use `npx meteor` as the primary cross-platform command. The documented

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skills/migrate-to-meteor-3/references/other-breaking-changes.md, line 221`curl https://install.meteor.com/ | sh` command remains an alternative for

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'migrate-to-meteor-3' ] || [ -L ~/.agents/skills/'migrate-to-meteor-3' ]; then echo 'A skill folder named migrate-to-meteor-3 already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/meteor/agent-skills' "$d" && git -C "$d" checkout --quiet '0b022e17f4fcd7753440de79bd512603cf832de3' -- 'skills/migrate-to-meteor-3' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/migrate-to-meteor-3' ~/.agents/skills/'migrate-to-meteor-3' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'migrate-to-meteor-3' ~/.claude/skills/'migrate-to-meteor-3' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-12	`0b022e1`	82
2026-11-08	`3bb7a76`	97