Borrowing it
Nothing to install: this file belongs to czlonkowski/n8n-mcp-cc-buildier. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/czlonkowski/n8n-mcp-cc-buildier/main/.claude/agents/n8n-webhook-tester.mdgit clone --depth 1 https://github.com/czlonkowski/n8n-mcp-cc-buildierWrote 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/agents/czlonkowski/n8n-mcp-cc-buildier/n8n-webhook-tester)<a href="https://agentmods.dev/agents/czlonkowski/n8n-mcp-cc-buildier/n8n-webhook-tester"><img src="https://agentmods.dev/badge/agents/czlonkowski/n8n-mcp-cc-buildier/n8n-webhook-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.
<a href="https://agentmods.dev/agents/czlonkowski/n8n-mcp-cc-buildier/n8n-webhook-tester"><img src="https://agentmods.dev/badge/agents/czlonkowski/n8n-mcp-cc-buildier/n8n-webhook-tester.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 | $0.00062 | $0.02574 |
| Opus 5 | $0.00031 | $0.01287 |
| Sonnet 5 | $0.00012 | $0.00515 |
| Haiku 4.5 | $0.00006 | $0.00257 |
Grade A, and why
n8n-webhook-tester scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \ The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 11d ago First seen · 295 lines · 62 tokens per session scan A 4f079efe71f8
n8n-webhook-tester is an agent published in the GitHub repository czlonkowski/n8n-mcp-cc-buildier (132 stars, last pushed 10mo ago), with no licence file. It adds 62 tokens to every session and 2,574 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other agents, from other repositories
nestjs-testing-expert
NestJS testing specialist that provides unit tests, integration tests, end-to-end tests, test database setup, mocking strategies, and testing best practices. Use proactively when writing tests for NestJS applications, setting up testing infrastructure, creating test fixtures, mocking dependencies, or implementing…
qa-tidewave
Validates Gherkin backend assertions against a running Phoenix application via Tidewave MCP. Asserts DB state, log lines, and runtime invariants. Emits BEES REQUESTS blocks for deltas. Spawned by qa-lead.
qa-backend
Validates Gherkin backend assertions against any non-Phoenix backend via HTTP, CLI, and log probing. Generic fallback when Tidewave is unavailable. Emits BEES REQUESTS blocks for deltas. Spawned by qa-lead.
qa-executor
Executes QA test plans with detailed reporting. Specialized for API testing and event verification.
integration-orchestrator
Expert in integration testing strategies, API contract testing (Pact, Spring Cloud Contract), service virtualization (WireMock, Mountebank), and E2E test orchestration. Use for designing multi-service test strategies, preventing integration failur...
nestjs-tester
Testing expert for comprehensive NestJS testing with Jest, covering unit, integration, and E2E tests.