Borrowing it
Nothing to install: this file belongs to mohsin-zaheer/mcp-server. 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/mohsin-zaheer/mcp-server/main/.claude/agents/n8n-mcp-tester.mdgit clone --depth 1 https://github.com/mohsin-zaheer/mcp-serverWrote 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/mohsin-zaheer/mcp-server/n8n-mcp-tester)<a href="https://agentmods.dev/agents/mohsin-zaheer/mcp-server/n8n-mcp-tester"><img src="https://agentmods.dev/badge/agents/mohsin-zaheer/mcp-server/n8n-mcp-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/mohsin-zaheer/mcp-server/n8n-mcp-tester"><img src="https://agentmods.dev/badge/agents/mohsin-zaheer/mcp-server/n8n-mcp-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 | $0.00000 | $0.02200 |
| Opus 5.5 | $0.00000 | $0.00880 |
| Sonnet 5.5 | $0.00000 | $0.00440 |
| Haiku 4.5 | $0.00000 | $0.00220 |
Grade A, and why
n8n-mcp-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 1mo 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.
This is a copy
88% identical to n8n-mcp-tester — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
name: n8n-mcp-tester description: Use this agent when you need to test n8n-mcp functionality after implementing fixes or new features. This agent should be invoked proactively after code changes to validate that the MCP tools work correctly with real n8n workflows. The agent tests the actual MCP server tools, not just unit tests. Examples:\n\n\nContext: Developer has just fixed a validation bug in the n8n-mcp server\nuser: "I've fixed the validation issue for HTTP Request nodes"\nassistant: "I've completed the fix. Now let me build the project and then test it."\n\nassistant: "Project built successfully. Please reload the MCP server in Claude Desktop to apply the changes."\nuser: "Reloaded"\nassistant: "Great! Now let me invoke the n8n-mcp-tester agent to verify the fix works correctly."\n\nSince a fix has been implemented and the MCP server reloaded, use the n8n-mcp-tester agent to validate the fix works in real-world usage.\n\n\n\n\nContext: Developer has added a new MCP tool for workflow validation\nuser: "I've implemented the new workflow validation tool"\nassistant: "Implementation complete. Let me build and prepare for testing."\n\nassistant: "Build successful. Please reload the MCP server to load the new tool."\nuser: "Done"\nassistant: "Perfect! I'll now use the n8n-mcp-tester agent to test the new workflow validation tool."\n\nAfter implementing new MCP functionality and reloading the server, invoke n8n-mcp-tester to verify it works correctly.\n\n tools: Glob, Grep, LS, Read, WebFetch, TodoWrite, WebSearch, mcp__puppeteer__puppeteer_navigate, mcp__puppeteer__puppeteer_screenshot, mcp__puppeteer__puppeteer_click, mcp__puppeteer__puppeteer_fill, mcp__puppeteer__puppeteer_select, mcp__puppeteer__puppeteer_hover, mcp__puppeteer__puppeteer_evaluate, ListMcpResourcesTool, ReadMcpResourceTool, mcp__supabase__list_organizations, mcp__supabase__get_organization, mcp__supabase__list_projects, mcp__supabase__get_project, mcp__supabase__get_cost, mcp__supabase__confirm_cost, mcp__supabase__create_project, mcp__supabase__pause_project, mcp__supabase__restore_project, mcp__supabase__create_branch, mcp__supabase__list_branches, mcp__supabase__delete_branch, mcp__supabase__merge_branch, mcp__supabase__reset_branch, mcp__supabase__rebase_branch, mcp__supabase__list_tables, mcp__supabase__list_extensions, mcp__supabase__list_migrations, mcp__supabase__apply_migration, mcp__supabase__execute_sql, mcp__supabase__get_logs, mcp__supabase__get_advisors, mcp__supabase__get_project_url, mcp__supabase__get_anon_key, mcp__supabase__generate_typescript_types, mcp__supabase__search_docs, mcp__supabase__list_edge_functions, mcp__supabase__deploy_edge_function, mcp__n8n-mcp__tools_documentation, mcp__n8n-mcp__list_nodes, mcp__n8n-mcp__get_node_info, mcp__n8n-mcp__search_nodes, mcp__n8n-mcp__list_ai_tools, mcp__n8n-mcp__get_node_documentation, mcp__n8n-mcp__get_database_statistics, mcp__n8n-mcp__get_node_essentials, mcp__n8n-mcp__search_node_properties, mcp__n8n-mcp__get_node_for_task, mcp__n8n-mcp__list_tasks, mcp__n8n-mcp__validate_node_operation, mcp__n8n-mcp__validate_node_minimal, mcp__n8n-mcp__get_property_dependencies, mcp__n8n-mcp__get_node_as_tool_info, mcp__n8n-mcp__list_node_templates, mcp__n8n-mcp__get_template, mcp__n8n-mcp__search_templates, mcp__n8n-mcp__get_templates_for_task, mcp__n8n-mcp__validate_workflow, mcp__n8n-mcp__validate_workflow_connections, mcp__n8n-mcp__validate_workflow_expressions, mcp__n8n-mcp__n8n_create_workflow, mcp__n8n-mcp__n8n_get_workflow, mcp__n8n-mcp__n8n_get_workflow_details, mcp__n8n-mcp__n8n_get_workflow_structure, mcp__n8n-mcp__n8n_get_workflow_minimal, mcp__n8n-mcp__n8n_update_full_workflow, mcp__n8n-mcp__n8n_update_partial_workflow, mcp__n8n-mcp__n8n_delete_workflow, mcp__n8n-mcp__n8n_list_workflows, mcp__n8n-mcp__n8n_validate_workflow, mcp__n8n-mcp__n8n_trigger_webhook_workflow, mcp__n8n-mcp__n8n_get_execution, mcp__n8n-mcp__n8n_list_executions, mcp__n8n-mcp__n8n_delete_execution, mcp__n8n-mcp__n8n_health_check, mcp__n8n-mcp__n8n_list_available_tools, mcp__n8n-mcp__n8n_diagnostic model: sonnet
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.
- 1mo ago First seen · 103 lines · 0 tokens per session scan A 5f493b0ce737
n8n-mcp-tester is an agent published in the GitHub repository mohsin-zaheer/mcp-server (0 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,200 tokens. A static security scan graded it A with 0 findings. It is 88% identical to n8n-mcp-tester, differing in 2 lines, and is treated as a copy.
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