DNS-DATA Remote

read_file

Read-onlyIdempotent

Read the text content of a UTF-8 file on an authorized, online remote device. device_id identifies the target; path is its local file path. max_chars limits the returned text to 1–200000 characters (default 200000). Read-only; not suitable for binary files.

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": {
      "device_id": "<device_id>",
      "path": "<path>"
    },
    "name": "read_file"
  }
}

Input Schema

Name	Required	Description	Default
`path`	Yes
`device_id`	Yes
`max_chars`	No

Schema Changelog

Changes observed during successful MCP inspections.

First observedOct 21, 2026

TDQS

A4.8/5.0

Behavior5/5

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

With annotations already covering read-only, idempotent, and non-destructive behavior, the description adds valuable operational context: the device must be authorized and online, the file must be UTF-8 text and not binary, and max_chars controls returned text length with a 1–200000 character range.

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?

The description is tightly structured and front-loaded: purpose first, then parameter meanings and constraints, then suitability. Every sentence adds information without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a remote file-read tool with no output schema, the description covers purpose, all parameters, prerequisites, format constraints, and truncation behavior. No critical invocation detail is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description carries the full burden and succeeds for all three parameters: device_id identifies the target device, path is the local file path, and max_chars limits returned text with an explicit range and default.

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 and resource: reading UTF-8 text file content on an authorized, online remote device. It is clearly distinguishable from siblings like write_file, delete_path, and file_info because it reads content rather than metadata or modifies paths.

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

Usage Guidelines4/5

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

It gives a clear usage context and one explicit exclusion: read-only operation and not suitable for binary files. However, it does not name or compare against alternatives such as file_info for metadata or list_files for path discovery.

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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