AI Crawler Index

AI Crawler Index Robots API

Ready-made robots.txt policy files.

Documentation GitHub OpenAPI

Operations 2

GET /robots/{policy}.txt A ready-made robots.txt policy file #

GET /policy/{policy}.json A policy with its rationale and the crawlers it names #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: AI Crawler Index Robots API
  version: '2026-09-01'
  summary: Every AI crawler on the web, what it is for, what blocking it costs you, and the IP ranges its operator publishes — as JSON, CSV, robots.txt and regex.
  description: 'A read-only, static, keyless index of 56 web crawlers operated by 30 companies and projects: what each one is for, the exact robots.txt token and user-agent substring, whether the operator says it obeys robots.txt, how to verify it is genuine, and — the part nobody else publishes — what you lose by blocking it.'
  license:
    name: CC0-1.0
    url: https://creativecommons.org/publicdomain/zero/1.0/
  contact:
    url: https://www.pathwren.workers.dev/about.html
servers:
- url: https://www.pathwren.workers.dev
tags:
- name: Robots
  description: Ready-made robots.txt policy files.
paths:
  /robots/{policy}.txt:
    get:
      summary: A ready-made robots.txt policy file
      operationId: getRobotsPolicy
      tags:
      - Robots
      parameters:
      - name: policy
        in: path
        required: true
        schema:
          type: string
          enum:
          - allow-all
          - block-ai-training
          - block-all-ai
          - block-datasets
          - allow-ai-search-only
          - block-seo-tools
          - block-disputed
          - maximum-ai-visibility
      responses:
        '200':
          description: robots.txt fragment, ready to append
          content:
            text/plain:
              schema:
                type: string
  /policy/{policy}.json:
    get:
      summary: A policy with its rationale and the crawlers it names
      operationId: getPolicy
      tags:
      - Robots
      parameters:
      - name: policy
        in: path
        required: true
        schema:
          type: string
          enum:
          - allow-all
          - block-ai-training
          - block-all-ai
          - block-datasets
          - allow-ai-search-only
          - block-seo-tools
          - block-disputed
          - maximum-ai-visibility
      responses:
        '200':
          description: Policy record
          content:
            application/json: {}

AI Crawler Index Robots API

Operations 2

Documentation

Specifications

Schemas & Data

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