# Router.so - Headless Forms Documentation

> Probe-verified (tier 2 of 3). Last checked 2026-08-23. 4 of 5 capability checks passed.

- host: docs.router.so
- url: https://docs.router.so/
- category: form management documentation
- type: documentation
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-08-23 against rubric v1. 4 of 5 checks passed.

- PASS — Markdown negotiation
- PASS — Markdown twin at a predictable URL
- PASS — llms.txt
- fail — API catalog
- PASS — MCP server answers

MCP tools (from tools/list on 2026-08-23, served from routerso.main-kill-isr.mintlify.me): search_router_so_headless_forms, query_docs_filesystem_router_so_headless_forms, submit_feedback

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **read** — "Fetch the complete documentation index at: https://docs.router.so/llms.txt" → `https://docs.router.so/llms.txt`
- **read** — "Follow our quickstart guide to set up Router.so quickly" → `https://docs.router.so/forms/endpoints/`
- **read** — "Learn how to use Router.so's API to create leads" → `https://docs.router.so/api-reference/introduction/`
- **read** — "Discover how to self-host Router.so for complete control and customization" → `https://docs.router.so/open-source/self-hosting/`

## Summary

Documentation for Router.so, an open source tool for managing forms and capturing leads with API and self-hosting options.

## Context

4827 sites in this index share the type "documentation"; 1248 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known-Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark