FlowSentry
https://flowsentry-agentpay.vercel.app/mcp ↗
Description
Security scanner for n8n workflows: 18 rules, OWASP Agentic mapped. Free MCP, paid x402 API.
What our measurements say
FlowSentry is a remote MCP server published at flowsentry-agentpay.vercel.app. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 300 ms, placing it among the faster endpoints. It offers a narrow, focused set of 2 tools. On the protocol side it speaks the 2026-07-28 stateless spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Agent readability score
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| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-13 01:33:33 | Dual-era | 200 | 310 | 200 | 322 | 2026-07-28 |
| 2026-09-12 23:31:36 | Dual-era | 200 | 300 | 200 | 458 | 2026-07-28 |
| 2026-09-12 21:29:15 | Dual-era | 200 | 387 | 200 | 406 | 2026-07-28 |
| 2026-09-12 19:27:29 | Dual-era | 200 | 222 | 200 | 225 | 2026-07-28 |
| 2026-09-12 17:24:09 | Dual-era | 200 | 263 | 200 | 280 | 2026-07-28 |
| 2026-09-12 15:21:42 | Dual-era | 200 | 276 | 200 | 258 | 2026-07-28 |
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 170ms → warm 153ms (penalty 17ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
list_rulesList all 18 FlowSentry security rules with severity and OWASP Agentic mapping.
scan_workflowScan one n8n workflow JSON export (string) and return the findings report. Accepts the raw workflow object ({'nodes': [...], ...}) or the CLI export wrapper ({'name':..., 'workflow': {...}}). Max 512 KB.
workflow_jsonstringrequirednamestring
Availability history
Each block is one measurement round. Green: working response. Amber: responded but the server was returning errors (5xx). Red: no response at all.
Era history
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
Response time history
The two probe legs separately: modern server/discover and legacy initialize.
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Dual-era
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[](https://mcpmetrics.io/servers/io-github-vasilicasijarvis-flowsentry)<a href="https://mcpmetrics.io/servers/io-github-vasilicasijarvis-flowsentry"><img src="https://mcpmetrics.io/badge/io.github.vasilicasijarvis/flowsentry/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
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