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Check AI crawler access

check_ai_crawler_access
Read-onlyIdempotent

Check whether AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended and others) are allowed or blocked by a website's robots.txt. Returns each crawler's status.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

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

Input Schema

NameRequiredDescriptionDefault
urlYesAny URL on the site to check, e.g. https://example.com

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is fully covered. The description adds real context beyond that: the data source (robots.txt), the non-exhaustive crawler set ('and others'), and that results are per-crawler. It omits rate-limit or network-failure behavior, which keeps it out of 5 territory.

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

Conciseness5/5

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

Two sentences, zero filler, with the core purpose front-loaded and the return behavior stated second. Every clause earns its place.

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 one-parameter read-only tool with no output schema, the description is nearly sufficient: it names the source of truth and that each crawler gets a status. It could be slightly more explicit about the returned value shape (allowed vs blocked vs not-specified), but nothing critical is missing.

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 description coverage is 100% with a single 'url' param whose schema note already explains 'any URL on the site'. The description adds no syntax, format, or constraint detail beyond the schema, so the baseline 3 applies.

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 (check) and resource (AI crawler access via robots.txt), and names concrete crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended). No sibling tool overlaps with this purpose, so an agent can select it unambiguously.

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

Usage Guidelines3/5

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

Usage is implied — you call it when you want to know if AI crawlers are blocked. There is no explicit when/when-not statement, no mention of prerequisites (e.g., site must be publicly reachable), and no named alternative, though the sibling list contains no close substitute.

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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