# parse_user_agent utilpeek: parse a User-Agent string. For known x402 monitors and indexers with call rates use identify_x402_client. A User-Agent is self-reported and easy to fake; is_bot is a heuristic (declared crawlers, HTTP libraries, headless browsers). Parsed with ua-parser and the uap-core regexes (Apache-2.0). Typically under 0.1 s (first call up to 0.5 s). Price: USD 0.001. Free: 10 utilpeek calls per IP per UTC day. Docs: https://tanod.dev/learn/user-agent-parser-api.html Agent View of the PolicyLayer registry record for `parse_user_agent`. HTML page: https://policylayer.com/tools/dev-tanod-tanod/parse-user-agent ## Facts - Tool: `parse_user_agent` - Server: Tanod (`https://tanod.dev/mcp`) — https://policylayer.com/tools/dev-tanod-tanod.md - Homepage: https://github.com/https://tanod.dev/mcp - Risk category: Execute (High risk) - Registry record: grade F, identity unverified - Server auth posture: open - Server CORS policy: * - Server rate-limited: no - Parameters: 1 (1 required) - Recommended policy verdict: Rate-limited ## Parameters | Parameter | Type | Required | Description | | --- | --- | --- | --- | | `user_agent` | string | yes | User-Agent string (1-1024 chars). | 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": "parse_user_agent", "arguments": { "user_agent": "" } } } ``` ## Why parse_user_agent is rated High parse_user_agent triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up. ## Use case AI agents invoke parse_user_agent to trigger actions in Tanod. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Tanod: ```json { "version": "1", "default": "deny", "tools": { "parse_user_agent": { "limits": [ { "counter": "parse_user_agent_rate", "window": "minute", "max": 10, "scope": "grant" } ] } } } ``` ## Other tools on Tanod (307) - `audit_token_approvals` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/audit-token-approvals.md - `aurora_forecast` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/aurora-forecast.md - `diff_text` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/diff-text.md - `image_metadata` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/image-metadata.md - `pdf_pipeline` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/pdf-pipeline.md - `pdf_protect` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/pdf-protect.md - `pdf_remove_pages` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/pdf-remove-pages.md - `pdf_reorder_pages` — Destructive — https://policylayer.com/tools/dev-tanod-tanod/pdf-reorder-pages.md - `build_ics_event` — Execute — https://policylayer.com/tools/dev-tanod-tanod/build-ics-event.md - `build_pptx_deck` — Execute — https://policylayer.com/tools/dev-tanod-tanod/build-pptx-deck.md - `build_xlsx_workbook` — Execute — https://policylayer.com/tools/dev-tanod-tanod/build-xlsx-workbook.md - `bulk_agent_index` — Execute — https://policylayer.com/tools/dev-tanod-tanod/bulk-agent-index.md - `cron_next_runs` — Execute — https://policylayer.com/tools/dev-tanod-tanod/cron-next-runs.md - `decode_calldata` — Execute — https://policylayer.com/tools/dev-tanod-tanod/decode-calldata.md - `expand_rrule` — Execute — https://policylayer.com/tools/dev-tanod-tanod/expand-rrule.md - `html_to_pdf` — Execute — https://policylayer.com/tools/dev-tanod-tanod/html-to-pdf.md - `image_crop` — Execute — https://policylayer.com/tools/dev-tanod-tanod/image-crop.md - `parse_ics` — Execute — https://policylayer.com/tools/dev-tanod-tanod/parse-ics.md - `parse_phone_number` — Execute — https://policylayer.com/tools/dev-tanod-tanod/parse-phone-number.md - `parse_rss_feed` — Execute — https://policylayer.com/tools/dev-tanod-tanod/parse-rss-feed.md - `parse_sitemap` — Execute — https://policylayer.com/tools/dev-tanod-tanod/parse-sitemap.md - `parse_url` — Execute — https://policylayer.com/tools/dev-tanod-tanod/parse-url.md - `render_mermaid` — Execute — https://policylayer.com/tools/dev-tanod-tanod/render-mermaid.md - `satellite_passes` — Execute — https://policylayer.com/tools/dev-tanod-tanod/satellite-passes.md - `sec_financials` — Execute — https://policylayer.com/tools/dev-tanod-tanod/sec-financials.md - `transcribe_audio` — Execute — https://policylayer.com/tools/dev-tanod-tanod/transcribe-audio.md - `x402_well_known_file` — Execute — https://policylayer.com/tools/dev-tanod-tanod/x402-well-known-file.md - `compare_stablecoin_transfer_fees` — Financial — https://policylayer.com/tools/dev-tanod-tanod/compare-stablecoin-transfer-fees.md - `transfer_preflight` — Financial — https://policylayer.com/tools/dev-tanod-tanod/transfer-preflight.md - `airport_distance` — Read — https://policylayer.com/tools/dev-tanod-tanod/airport-distance.md - …and 277 more: https://policylayer.com/tools/dev-tanod-tanod.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=dev-tanod-tanod · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dev-tanod-tanod