supabase-ssr

supabase-ssr is a skill for Claude Code, Codex from ashish7802/awesome-api-skills. It costs 0 tokens per session (259 once invoked), scanned A, original, MIT.

A server-side authentication guide explains how to use Supabase sessions with cookies across server-rendered application code. Supabase is a hosted backend service that provides authentication and other application services.

In plain words
What is it for?
It helps configure authentication for server components, server actions, middleware, and edge route handlers.
Why use it?
It helps prevent trusting stale or unverified login cookies when protecting server routes.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps configure authentication for server components, server actions, middleware, and edge route handlers.

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Install with agentmods
npx agentmods add skills/ashish7802/awesome-api-skills/supabase-ssr
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 ashish7802/awesome-api-skills --skill supabase-ssr
Clone the repo
git clone --depth 1 https://github.com/ashish7802/awesome-api-skills

Made for: Claude Code, 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 supabase-ssr

README.md
[![agentmods](https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/supabase-ssr/github.svg)](https://agentmods.dev/skills/ashish7802/awesome-api-skills/supabase-ssr)
Your own site
<a href="https://agentmods.dev/skills/ashish7802/awesome-api-skills/supabase-ssr"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/supabase-ssr/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 supabase-ssr

Your own site · 80×15
<a href="https://agentmods.dev/skills/ashish7802/awesome-api-skills/supabase-ssr"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/supabase-ssr.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 259 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.
Origin original 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 $0.00000 $0.00259
Opus 5.5 $0.00000 $0.00104
Sonnet 5.5 $0.00000 $0.00052
Haiku 4.5 $0.00000 $0.00026

Measured yesterday against content hash 98cca9584f22, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

supabase-ssr 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 yesterday.

The scan reads SKILL.md. This mod also ships 1 executable file (examples/server-client.ts), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/supabase-ssr/SKILL.md · 23 lines

What it actually says

Overview

@supabase/ssr enables secure, cookie-based authentication across Server Components, Server Actions, Middleware, and Edge Route Handlers.

Installation

npm install @supabase/supabase-js @supabase/ssr

AI Pitfalls

  • Never use @supabase/auth-helpers-nextjs: That package is officially deprecated. Always use @supabase/ssr.
  • Never trust getSession() on the server: supabase.auth.getSession() reads unverified cookies directly. Always call const { data: { user } } = await supabase.auth.getUser() to revalidate the JWT against Supabase Auth servers.
  • Use getAll / setAll: Do not use legacy get, set, remove cookie handlers.

Production Checklist

  • @supabase/ssr installed and configured with getAll and setAll
  • Protected routes call await supabase.auth.getUser()
  • Middleware refreshes expired auth tokens on incoming requests

Last Verified: 2026-10-21

Files

What ships with it

2 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. yesterday First seen · 23 lines · 0 tokens per session scan A 98cca9584f22

Subscribe to this mod's changes

supabase-ssr is a skill published in the GitHub repository ashish7802/awesome-api-skills (13 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 259 tokens. 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 2026-10-22.

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