# ttfb

Measure Time To First Byte (TTFB) for a URL

Agent View of the PolicyLayer registry record for `ttfb`. HTML page: https://policylayer.com/tools/com-geekflare-mcp/ttfb

## Facts

- Tool: `ttfb`
- Server: Mcp (`@geekflare/mcp`) — https://policylayer.com/tools/com-geekflare-mcp.md
- Install: `npx -y @geekflare/mcp`
- Homepage: https://github.com/oci:geekflarehq/geekflare-api-mcp:0.3.5
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 2 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `url` | string | yes | Target URL |
| `followRedirect` | boolean | no |  |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "ttfb",
    "arguments": {
      "url": "<url>"
    }
  }
}
```

## Why ttfb is rated Low

This tool performs a network measurement operation that retrieves timing data about HTTP responses. It queries a remote URL and measures latency metrics, which is a read-only operation with no side effects, data modification, code execution, or destructive capabilities. The low severity reflects that misuse would only expose performance metrics without enabling further attacks or data manipulation.

From the tool's own definition: "Tool name 'ttfb' and description 'Measure Time To First Byte (TTFB) for a URL' indicate measurement/monitoring of HTTP response timing metrics without modifying or executing arbitrary code on target systems."

Risk signals: Accepts URL/endpoint input (url)

## Use case

AI agents call ttfb to retrieve information from Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "ttfb": {}
  }
}
```

## Other tools on Mcp (19)

- `lighthouse` — Execute — https://policylayer.com/tools/com-geekflare-mcp/lighthouse.md
- `mtr` — Execute — https://policylayer.com/tools/com-geekflare-mcp/mtr.md
- `openPorts` — Execute — https://policylayer.com/tools/com-geekflare-mcp/openports.md
- `ping` — Execute — https://policylayer.com/tools/com-geekflare-mcp/ping.md
- `url2Pdf` — Execute — https://policylayer.com/tools/com-geekflare-mcp/url2pdf.md
- `brokenLink` — Read — https://policylayer.com/tools/com-geekflare-mcp/brokenlink.md
- `dnsRecord` — Read — https://policylayer.com/tools/com-geekflare-mcp/dnsrecord.md
- `dnsSec` — Read — https://policylayer.com/tools/com-geekflare-mcp/dnssec.md
- `httpHeader` — Read — https://policylayer.com/tools/com-geekflare-mcp/httpheader.md
- `httpProtocol` — Read — https://policylayer.com/tools/com-geekflare-mcp/httpprotocol.md
- `loadTime` — Read — https://policylayer.com/tools/com-geekflare-mcp/loadtime.md
- `metaScrape` — Read — https://policylayer.com/tools/com-geekflare-mcp/metascrape.md
- `mixedContent` — Read — https://policylayer.com/tools/com-geekflare-mcp/mixedcontent.md
- `redirectCheck` — Read — https://policylayer.com/tools/com-geekflare-mcp/redirectcheck.md
- `screenshot` — Read — https://policylayer.com/tools/com-geekflare-mcp/screenshot.md
- `search` — Read — https://policylayer.com/tools/com-geekflare-mcp/search.md
- `siteStatus` — Read — https://policylayer.com/tools/com-geekflare-mcp/sitestatus.md
- `tlsScan` — Read — https://policylayer.com/tools/com-geekflare-mcp/tlsscan.md
- `webScrape` — Read — https://policylayer.com/tools/com-geekflare-mcp/webscrape.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=com-geekflare-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-geekflare-mcp