Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/salavender/antigravity-compound-engineering-pluginnpx agentmods add skills/salavender/antigravity-compound-engineering-plugin/supabaseWrote 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.
[](https://agentmods.dev/skills/salavender/antigravity-compound-engineering-plugin/supabase)<a href="https://agentmods.dev/skills/salavender/antigravity-compound-engineering-plugin/supabase"><img src="https://agentmods.dev/badge/skills/salavender/antigravity-compound-engineering-plugin/supabase/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.
<a href="https://agentmods.dev/skills/salavender/antigravity-compound-engineering-plugin/supabase"><img src="https://agentmods.dev/badge/skills/salavender/antigravity-compound-engineering-plugin/supabase.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00019 | $0.00327 |
| Opus 5.5 | $0.00008 | $0.00131 |
| Sonnet 5.5 | $0.00004 | $0.00065 |
| Haiku 4.5 | $0.00002 | $0.00033 |
Grade A, and why
supabase 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 1mo 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.
This is a copy
100% identical to supabase — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Supabase Skill
Overview
Provides comprehensive expertise for Supabase development in [PROJECT_NAME] including:
- Database schema design and migrations
- Row Level Security (RLS) policy implementation
- Auth integration debugging
- Performance optimization
When To Use
- Creating or modifying database schemas
- Writing database migrations
- Implementing RLS policies
- Debugging Supabase auth or query issues
- Optimizing database performance
Instrumentation
# Log usage when using this skill
./scripts/log-skill.sh "supabase" "manual" "$$"
What do you want to do?
- Create Database Migration → Read
workflows/migration-workflow.md - Design RLS Policies → Read
workflows/rls-policies.md - Debug Supabase Issues → Read
workflows/debugging.md - Design Database Schema → Read
workflows/schema-design.md - Review Best Practices → Read
references/best-practices.md - See Common Patterns → Read
references/common-patterns.md
Quick Reference
Migration Template: templates/migration-template.sql
RLS Template: templates/rls-policy-template.sql
Existing Migrations: backend/migrations/
Supabase Client: lib/supabaseClient.ts
What ships with it
9 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.
- .DS_Store 6.0 KB
- references/best-practices.md 6.7 KB
- references/common-patterns.md 8.5 KB
- templates/migration-template.sql 1.7 KB
- templates/rls-policy-template.sql 2.3 KB
- workflows/debugging.md 5.7 KB
- workflows/migration-workflow.md 4.3 KB
- workflows/rls-policies.md 4.9 KB
- workflows/schema-design.md 7.1 KB
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.
- 1mo ago First seen · 47 lines · 19 tokens per session scan A 45ce89ebef24
supabase is a skill published in the GitHub repository salavender/antigravity-compound-engineering-plugin (48 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 327 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to supabase, differing in 0 lines, and is treated as a copy.
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