mcp-cloudflare-crunchtools

List Request Header Rules Tool

list_request_header_rules_tool

Read-only

Retrieve request header modification rules for a Cloudflare zone using its zone ID. Use this to review existing header transformations before making changes.

Instructions

List request header modification rules.

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": {
      "zone_id": "<zone_id>"
    },
    "name": "list_request_header_rules_tool"
  }
}

Input Schema

Name	Required	Description	Default
`zone_id`	Yes	Zone ID (32-character hex string)

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedv0.7.2Oct 12, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```
- addedInput schema / properties / zone_id / description
```
Added value: +"Zone ID (32-character hex string)"
```
Changed2 schema fields changedv0.5.1Oct 1, 2026
- removedInput schema / additionalProperties
```
Removed value: -false
```
- removedInput schema / properties / zone_id / description
```
Removed value: -"Zone ID (32-character hex string)"
```
First observedv0.5.0Aug 19, 2026

TDQS

B3.3/5.0

Behavior2/5

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

Annotations already declare readOnlyHint=true, and the description adds no behavioral details beyond that, such as pagination, auth requirements, or rate limits. It simply restates the operation with no additional transparency.

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

Conciseness4/5

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

The description is a single, front-loaded sentence with no wasted words. It is appropriately terse for a simple list tool, though it could be slightly more informative without becoming verbose.

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?

Given the tool's low complexity, full schema parameter coverage, output schema presence, and read-only annotation, the description is sufficient to understand the tool's function. It lacks optional usage context but is not misleading or incomplete for invocation.

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 zone_id documented as a 32-character hex string. The description adds no meaning beyond the schema, so the baseline of 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?

The description states a specific verb ('List') and resource ('request header modification rules'), clearly distinguishing it from siblings such as set_request_header_rules_tool (write vs read) and list_response_header_rules_tool (request vs response).

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 gives no guidance on when to use this tool versus alternatives, such as set_request_header_rules_tool for modifications or list_response_header_rules_tool for response rules. It only states what the tool does.

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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