supabase-edge-fn-tester

supabase-edge-fn-tester is an agent for Claude Code from luanpdd/kit-mcp. It costs 48 tokens per session (2,895 once invoked), scanned A, original, MIT.

An agent that generates TypeScript tests for Supabase Edge Functions, which are server-side functions running close to users at the network edge.

In plain words
What is it for?
Use it after creating or before refactoring a Supabase Edge Function, especially when it has no tests yet.
Why use it?
It adds regression coverage for normal input, invalid input, authentication, rate limits, and timeouts, so later changes are less likely to break existing behaviour.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it after creating or before refactoring a Supabase Edge Function, especially when it has no tests yet.

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Install with agentmods
npx agentmods add agents/luanpdd/kit-mcp/supabase-edge-fn-tester
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.

Clone the repo
git clone --depth 1 https://github.com/luanpdd/kit-mcp

Made for: Claude Code.

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-edge-fn-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/luanpdd/kit-mcp/supabase-edge-fn-tester/github.svg)](https://agentmods.dev/agents/luanpdd/kit-mcp/supabase-edge-fn-tester)
Your own site
<a href="https://agentmods.dev/agents/luanpdd/kit-mcp/supabase-edge-fn-tester"><img src="https://agentmods.dev/badge/agents/luanpdd/kit-mcp/supabase-edge-fn-tester/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-edge-fn-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/luanpdd/kit-mcp/supabase-edge-fn-tester"><img src="https://agentmods.dev/badge/agents/luanpdd/kit-mcp/supabase-edge-fn-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,895 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 $0.00048 $0.02895
Opus 5 $0.00024 $0.01448
Sonnet 5 $0.00010 $0.00579
Haiku 4.5 $0.00005 $0.00290

Measured 6d ago against content hash 77c699d642ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

supabase-edge-fn-tester 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 6d 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.

kit/agents/supabase-edge-fn-tester.md · 290 lines

How it starts

The opening of the file, as written. The whole thing — 290 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Você é o Edge Function tester Supabase. Recebe nome de uma Edge Function existente e gera supabase/functions/tests/<fn>-test.ts com cobertura canônica de 5 equivalence classes + opcionalmente captura fixtures reais via logs.

Compat: Full em todos os IDEs (filesystem-only).

Por que existe

supabase-edge-fn-writer cria funções com instrumentação OTel + SRE defenses, mas não gera tests automaticamente. Tests são primeira camada de regressão para mudanças futuras — sem eles, refactor é cego. Este agent é o handoff downstream canônico.

Skills consultadas

Inputs esperados

  • function_name: kebab-case (ex: orders, stripe-webhook)
  • (Opcional) auth_mode: detectado automaticamente de config.toml se não passado
  • (Opcional) pattern: 'basic' | 'characterization' | 'webhook' | 'rag' | 'mcp'
  • (Opcional) capture_payloads: bool — se true, agent invoca payload-capture-instrumenter antes para coletar fixtures reais

Passos

Step 0 — Preflight

# 1. localizar função
test -d supabase/functions/<function_name> || exit "função não existe"

# 2. ler config.toml para detectar verify_jwt + entrypoint
grep -A 3 "^\[functions\.<function_name>\]" supabase/config.toml

# 3. checar se já existem tests
ls supabase/functions/tests/<function_name>-test.ts 2>/dev/null && \
  echo "WARN: tests já existem — extending vs replacing?"

Read the full file on GitHub · 290 lines

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. 6d ago First seen · 290 lines · 48 tokens per session scan A 77c699d642ca

Subscribe to this mod's changes

supabase-edge-fn-tester is an agent published in the GitHub repository luanpdd/kit-mcp (1 stars, last pushed 2d ago), licensed MIT. It adds 48 tokens to every session and 2,895 once invoked, about $0.0002 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.