URLpipe

Detect a page's technologies

detect_technologies

Idempotent

Exposes POST /technologies. Detects what a page is built with — CMS, e-commerce platform, JavaScript frameworks and libraries, analytics and tag managers, advertising and marketing tools, CDN, web server, programming language, payment providers, chat widgets, consent managers and more — from an open database of over 7,000 fingerprints. Each technology comes with its version when the page gives it away, a confidence from 0 to 100, its categories, its website and CPE, and which signals gave it away (html, meta tags, headers, cookies, JavaScript globals, DOM, script URLs and contents, stylesheets, DNS records, robots.txt). The page is rendered first, so technologies loaded by JavaScript are found too. 1 credit.

Input Schema

TableJSON Schema

Name	Required	Description
`url`	Yes	The page to fetch. Must be a public http(s) URL.
`sync`	No	Wait for the result and return it (default false). When false the call returns a token immediately and you collect the result with get_result.
`labels`	No	Your own keys to find this request by later, e.g. {"client": "acme"}: they come back with the result, in the webhook and in list_requests, which can filter by them. Up to 16 keys of up to 40 letters, digits, _ - or .; string values up to 256 characters.
`max_age`	No	How fresh a stored result must be to be reused, e.g. "2 hours" or "3 days". Default 7 days, maximum 30. A reused result is free. Pass "0" to force a fresh fetch.
`report_to`	No	Async only: a webhook URL to deliver the result to. Defaults to the project's configured endpoint, if it has one.
`project_id`	Yes	Which project this request belongs to. From list_projects.
`residential`	No	Fetch the page from a residential (home ISP) exit instead of a datacentre one. Costs a surcharge per page visit — see get_usage. Use it for sites that block datacentre traffic.
`page_options`	No	What to do to the page before anything is read off it. Applies to the result itself: removed ads and banners are gone from html, markdown and summaries too, and what scrolling loaded is in all of them.
`idempotency_key`	No	Makes the call safe to retry: sending it again with the same key within 24 hours returns the first call's token and result instead of starting (and charging for) new work, even with max_age "0". Up to 255 printable ASCII characters; a UUID is ideal.

Output Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 12, 2026

changedInput schema / properties / page_options / description

Previous value: -"What to do to the page before anything is read off it. Applies to the result itself: removed ads and banners are gone from html, markdown and summaries too."New value: +"What to do to the page before anything is read off it. Applies to the result itself: removed ads and banners are gone from html, markdown and summaries too, and what scrolling loaded is in all of them."

addedInput schema / properties / page_options / properties / scroll_to_bottom

Added value: +{
+  "description": "Scroll down the page before reading it, for as long as scrolling loads more (up to 25s). For listings and feeds that load their content as they are scrolled.",
+  "type": "boolean"
+}

AddedOct 12, 2026

TDQS

A3.6/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Adds real value beyond annotations: page is rendered first so JS-loaded techs are found, fingerprint DB size (7,000+), what each result contains, and the cost (1 credit). Annotations only flag openWorld/idempotent/non-destructive; the description tells the agent the work is a rendered fetch with a metered cost, which materially changes invocation decisions. Does not disclose latency or failure behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with purpose and detection scope, but the middle sentence is a long run-on list of 12 categories that could be compressed, and the trailing '1 credit' cost detail is buried at the end rather than flagged earlier.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 9-parameter async-capable tool with full schema coverage and an output schema, the description covers purpose, rendering behavior, result contents, and cost — enough for correct invocation. Missing only cost/rate context around the residential surcharge and async token flow, which the schema partially handles via get_result.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so all nine parameters are documented in the schema (sync vs async, max_age caching, residential surcharge, idempotency). The description adds nothing parameter-specific, which is acceptable given full schema coverage — baseline 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb (detects) and resource (a page's technologies) and enumerates the categories detected, so an agent can distinguish it from siblings like extract_metadata or run_lighthouse_audit without opening the schema. The 'Exposes POST /technologies' opener is the only slightly redundant part.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description never says when to choose this over extract_metadata, fetch_markdown, or run_lighthouse_audit, and gives no exclusions or prerequisites beyond the URL being public http(s). A precisely worded but purely descriptive entry point with no routing guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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