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.
npx skills add tdimino/claude-code-minoan --skill supabase-skillgit clone --depth 1 https://github.com/tdimino/claude-code-minoanWrote 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/tdimino/claude-code-minoan/supabase-skill)<a href="https://agentmods.dev/skills/tdimino/claude-code-minoan/supabase-skill"><img src="https://agentmods.dev/badge/skills/tdimino/claude-code-minoan/supabase-skill/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/tdimino/claude-code-minoan/supabase-skill"><img src="https://agentmods.dev/badge/skills/tdimino/claude-code-minoan/supabase-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 356 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- medium MCP Rug Pull · line 64 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 71 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00069 | $0.04438 |
| Opus 5 | $0.00034 | $0.02219 |
| Sonnet 5 | $0.00014 | $0.00888 |
| Haiku 4.5 | $0.00007 | $0.00444 |
Grade A, and why
supabase-skill 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 612 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Supabase MCP Skill
Overview
This skill provides comprehensive guidance for working with Supabase through the Model Context Protocol (MCP), enabling AI-powered database operations, modern schema design, and production-ready database architectures.
When to Use This Skill
Use this skill when you encounter ANY of the following:
Setup & Configuration
- Setting up or configuring Supabase MCP servers (Cursor, Claude Desktop, Claude Code CLI)
- Connecting AI tools to Supabase projects
- Debugging MCP connection issues
- Configuring read-only mode, project scoping, or feature groups
Database Design
- Designing database schemas following best practices
- Implementing table relationships (one-to-many, many-to-many, polymorphic)
- Choosing between normalization patterns (single table vs class table inheritance)
- Designing for multi-tenancy or microservices
- Working with temporal data or audit logging
Security & Access Control
- Implementing Row Level Security (RLS) policies
- Setting up authentication integration with
auth.users - Building role-based access control (RBAC)
- Securing multi-tenant applications
- Preventing unauthorized data access
Migrations & Schema Evolution
- Creating and managing database migrations
- Evolving schemas without breaking changes
- Handling backward compatibility
- Using Supabase branching for testing
Production Patterns
- Session management with timeout logic
- Memory persistence patterns (dual persistence with soul + process memory)
- Message storage with region-based organization
- State management with validation
- Error handling and graceful degradation
Performance & Optimization
- Indexing strategies for query performance
- Query optimization with EXPLAIN ANALYZE
- Connection pooling configuration
- Read replica setup for scaling
Quick Reference Examples
1. MCP Server Setup (Claude Code CLI)
# Basic installation with project scoping
claude mcp add --transport stdio \
--env SUPABASE_ACCESS_TOKEN=your_personal_access_token \
--scope local \
supabase -- npx -y @supabase/mcp-server-supabase@latest \
--project-ref=your_project_ref
# With read-only mode (safe for exploration)
claude mcp add --transport stdio \
--env SUPABASE_ACCESS_TOKEN=your_token \
--scope local \
supabase -- npx -y @supabase/mcp-server-supabase@latest \
--project-ref=your_project_ref \
--read-only
What ships with it
18 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.
- assets/examples/memory-store.ts 3.4 KB runs code
- assets/examples/rls-policies.sql 4.8 KB
- assets/examples/session-management.ts 3.7 KB runs code
- assets/examples/supabase-client.ts 1.1 KB runs code
- README.md 6.4 KB
- references/database-patterns.md 20 KB
- references/github/CHANGELOG.md 5.1 KB
- references/github/file_structure.md 14 KB
- references/github/issues.md 5.3 KB
- references/github/README.md 7.7 KB
- references/github/releases.md 291 KB
- references/mcp-setup.md 17 KB
- references/official-docs/migrations.md 10 KB
- references/official-docs/row-level-security.md 10 KB
- references/production-patterns.md 19 KB
- references/schema-design.md 13 KB
- references/security.md 17 KB
- references/tools-reference.md 14 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.
- 8d ago First seen · 612 lines · 69 tokens per session scan A cf8e8c73c985
supabase-skill is a skill published in the GitHub repository tdimino/claude-code-minoan (41 stars, last pushed yesterday), licensed MIT. It adds 69 tokens to every session and 4,438 once invoked, about $0.0003 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 2026-09-03.
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