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Local-first browser automation platform that compiles AI-inspected websites into deterministic programs.
Do not connect
The assessed surface is high-risk. Remediate the findings before connecting.
Scanned 6 days ago
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The tap MCP server exposes 4 tools, focused primarily on general-purpose capabilities. Its published description reads: "Local-first browser automation platform that compiles AI-inspected websites into deterministic programs". It communicates over Streamable HTTP using the 2026-07-28 protocol revision, and does not require authorization to connect. MCPGrade currently rates tap D — the assessed surface is high-risk and should be remediated before use. Its most notable findings include "Data-exfiltration parameters" and "No authorization on a public remote server". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check tap's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add tap to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.taprun.dev/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Create a tap from URL × intent (local install only).
Read-only substrate check (local install only).
Resolve uncertain intent (local install only).
Execute a saved tap. On this edge demo, runs the tab-free demo taps. ref = demo/<name>.
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: capture
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
parameter "url"RecommendationRemove side-channel parameters; constrain tool inputs.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: capture
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "capture"RecommendationScope tools to the minimum needed.
tool: run
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "run"RecommendationScope tools to the minimum needed.
tool: (server instructions)
The description pairs a fetch imperative with a hardcoded external URL, letting the server relocate its real instructions off-metadata and mutate them after review. Fires only when a fetch verb and a URL co-occur, so benign documentation links do not.
nstall locally: https://taprun.dev/addRecommendationDo not direct the model to fetch and act on external URLs; treat linked content as untrusted.
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