Reference

ctx_quality_lab

Input contract and parameters for ctx_quality_lab.

Status by featureReviewed September 2026

MCP tool · Analysis tools

Call this tool through your MCP client. Its availability depends on your active configuration and profile.

This registry contract is separate from the SDK. For terminal commands, use the CLI reference.

Parameters

Generated from the registered input schema. “Required” reflects the schema; individual actions can impose additional requirements.

compressedstring

Compressed text to evaluate

extstring

File extension for fidelity analysis (default: rs)

Schema default: "rs"

formatstring

Output format (default: text)

Accepted: jsontext

Schema default: "text"

originalstring

Original uncompressed text

Exact JSON schema

Inspect the complete input schema

{
  "properties": {
    "compressed": {
      "description": "Compressed text to evaluate",
      "type": "string"
    },
    "ext": {
      "default": "rs",
      "description": "File extension for fidelity analysis (default: rs)",
      "type": "string"
    },
    "format": {
      "default": "text",
      "description": "Output format (default: text)",
      "enum": [
        "json",
        "text"
      ],
      "type": "string"
    },
    "original": {
      "description": "Original uncompressed text",
      "type": "string"
    }
  },
  "required": [],
  "type": "object"
}

Runtime description

The following is the tool's own agent-facing description, reproduced from the reviewed registry. It can contain implementation terminology; it does not expand the public stability commitment.

Read the agent-facing description

Run Quality Lab: compression fidelity, cache effectiveness, tokenizer calibration, ETPAO. Pass original+compressed text, or omit for runtime-only metrics.

Sources & versions3 references Reviewed 18 Sept 2026

mcp_manifest.rsrust/src/core/mcp_manifest.rsReviewed checkout
registry.rsrust/src/server/registry.rsReviewed checkout
dynamic_tools.rsrust/src/server/dynamic_tools.rsReviewed checkout

Core checkout: 50fbff09c9
Installed runtime: 3.10.2
SDK release: 1.1.0

Separate baselines for source, CLI/configuration and SDK contracts. Review does not certify every platform or integration.

Versions & compatibility