convex-migration-helper

convex-migration-helper is a skill for Codex from get-convex/convex-backend. It costs 102 tokens per session (1,291 once invoked), scanned A, original, no licence file.

A skill for planning and carrying out safe schema and data migrations in Convex, a backend database platform. It covers changes such as adding fields, changing field types, backfilling existing documents, and splitting or merging tables.

In plain words
What is it for?
Use it when schema validation fails or when existing Convex documents and tables need a controlled structural change.
Why use it?
It reduces the risk of breaking deployments or leaving existing data in the wrong shape when the database changes.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it when schema validation fails or when existing Convex documents and tables need a controlled structural change.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/get-convex/convex-backend/convex-migration-helper
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 get-convex/convex-backend --skill convex-migration-helper
Clone the repo
git clone --depth 1 https://github.com/get-convex/convex-backend

Made for: Codex.

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 convex-migration-helper

README.md
[![agentmods](https://agentmods.dev/badge/skills/get-convex/convex-backend/convex-migration-helper/github.svg)](https://agentmods.dev/skills/get-convex/convex-backend/convex-migration-helper)
Your own site
<a href="https://agentmods.dev/skills/get-convex/convex-backend/convex-migration-helper"><img src="https://agentmods.dev/badge/skills/get-convex/convex-backend/convex-migration-helper/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 convex-migration-helper

Your own site · 80×15
<a href="https://agentmods.dev/skills/get-convex/convex-backend/convex-migration-helper"><img src="https://agentmods.dev/badge/skills/get-convex/convex-backend/convex-migration-helper.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 102 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,291 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 pass 7 Sept 2026
How audits are shown
Origin unknown 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 $0.00102 $0.01291
Opus 5 $0.00051 $0.00646
Sonnet 5 $0.00020 $0.00258
Haiku 4.5 $0.00010 $0.00129

Measured 10d ago against content hash 2e9c0da3f018, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

convex-migration-helper 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 10d 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.

npm-packages/private-demos/quickstarts/sveltekit/.agents/skills/convex-migration-helper/SKILL.md · 150 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 10d ago First seen · 150 lines · 102 tokens per session scan A 2e9c0da3f018

Subscribe to this mod's changes

convex-migration-helper is a skill published in the GitHub repository get-convex/convex-backend (12,516 stars, last pushed today), with no licence file. It adds 102 tokens to every session and 1,291 once invoked, about $0.0005 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.

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