agentmods.dev

stripe-webhooks-auditor

stripe-webhooks-auditor is an agent for Claude Code from acaprino/daodan. It costs 98 tokens per session (1,018 once invoked), scanned A, original, MIT.

A report-only checker that compares Stripe's configured webhook endpoints and events with the handlers in your code. Stripe is a payment platform, and webhooks are messages it sends when payment-related events happen.

In plain words
What is it for?
Use it to review a Stripe webhook setup before launch, after an incident, or when adding features such as subscriptions, usage-based billing, or connected accounts.
Why use it?
It finds events your application does not handle, unsafe signature checks, missing duplicate-event protection, disabled or outdated endpoints, and other gaps before they cause missed payments or incidents.

Agent for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: model in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the stripe plugin — 1 skill, 1 command, 3 agents shipped together

not rated 9repo today A scan 98 tokens original MIT

Good fit Use it to review a Stripe webhook setup before launch, after an incident, or when adding features such as subscriptions, usage-based billing, or connected accounts.

Compare 6 agents from other repositories ↓
View source ↗ acaprino/daodan
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add acaprino/daodan
Claude Code
/plugin install stripe

Made for: Claude Code.

Or install stripe, the plugin that ships this one along with the rest of its 1 skill, 1 command, 3 agents.

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 stripe-webhooks-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/acaprino/daodan/stripe-webhooks-auditor/github.svg)](https://agentmods.dev/agents/acaprino/daodan/stripe-webhooks-auditor)
Your own site
<a href="https://agentmods.dev/agents/acaprino/daodan/stripe-webhooks-auditor"><img src="https://agentmods.dev/badge/agents/acaprino/daodan/stripe-webhooks-auditor/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 stripe-webhooks-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/acaprino/daodan/stripe-webhooks-auditor"><img src="https://agentmods.dev/badge/agents/acaprino/daodan/stripe-webhooks-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 98 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,018 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 $0.00098 $0.01018
Opus 5.5 $0.00039 $0.00407
Sonnet 5.5 $0.00020 $0.00204
Haiku 4.5 $0.00010 $0.00102

Measured 16d ago against content hash e15b63babc06, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

stripe-webhooks-auditor 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 16d 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.

exports/claude/plugins/stripe/agents/stripe-webhooks-auditor.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stripe Webhooks Auditor

Single-purpose auditor. Report-only: never modifies webhook configuration or code. Pairs with webhook_audit.py (Stripe-side enumeration) and consumes the pass criteria from ${CLAUDE_PLUGIN_ROOT}/skills/stripe/references/webhooks-production.md (canonical checklist).

Inputs

  • STRIPE_SECRET_KEY or STRIPE_RESTRICTED_KEY in env (read-only scope is enough).
  • A codebase path (defaults to cwd).
  • Optional --account <acct_id> for Connect platforms.
  • Optional --features <flags> (e.g. meters,entitlements,connect,trials); inferred from codebase if omitted.

Three surfaces to check

  1. Stripe account state: configured endpoints, subscribed events, disabled endpoints, per-endpoint API version. Run webhook_audit.py --json if present; otherwise stripe webhook_endpoints list.
  2. Codebase state: Glob **/webhook*.{py,ts,js,rb,go,php} + grep for constructEvent / construct_event / stripe-signature. Read each match. Don't trust file names alone.
  3. Gap analysis: required events per declared feature vs enabled events vs events actually handled in code.

Pass criteria per handler

See ${CLAUDE_PLUGIN_ROOT}/skills/stripe/references/webhooks-production.md ("The four things that must be right" + "Audit checklist"). Cite file:line for each verification. Don't duplicate the criteria here: they'll drift.

Anti-patterns to flag explicitly

  • await req.json() / request.json() before signature check.
  • Body-parser middleware on the webhook route (Express bodyParser.json(), Next.js bodyParser: true).
  • try that swallows SignatureVerificationError into 200.
  • event.type === '*' or a catch-all that silently drops events.
  • Synchronous I/O (LLM calls, email, multi-table writes) before the 2xx response: flags likely 10s-budget violations.
  • Edge runtime declarations: export const runtime = 'edge', export const config = { runtime: 'edge' }.

Feature inference heuristics

  • stripe.billing.meter* / MeterEvent -> expect meter events (v1.billing.meter.error_report_triggered, .no_meter_found).
  • stripe.entitlements.* / active_entitlement_summary -> expect entitlements.active_entitlement_summary.updated.
  • trial_period_days / trial_end / trial_will_end -> expect customer.subscription.trial_will_end.
  • stripe.Account.* / stripeAccount= / Stripe-Account header -> Connect events (account.*, charge.dispute.*).

Read the full file on GitHub · 76 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. 16d ago First seen · 76 lines · 98 tokens per session scan A e15b63babc06

Subscribe to this mod's changes

stripe-webhooks-auditor is an agent published in the GitHub repository acaprino/daodan (9 stars, last pushed today), licensed MIT. It adds 98 tokens to every session and 1,018 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-10-01.

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