Skip to main content
Glama

adb_cat

Retrieve the contents of a text file from an Android device via ADB, with an option to limit the number of lines returned.

Instructions

Read a text file from the device

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pathYesFile path on device
deviceNoDevice serial
maxLinesNoMaximum lines to return (1-10000)
Behavior2/5

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

No annotations are provided, so the description must fully disclose behavior. It states 'read a text file' but doesn't mention error handling, encoding, file size limits, or whether it modifies anything. Minimal transparency for a file read operation.

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?

One short sentence of 6 words, no fluff, front-loads the purpose. Highly concise and efficient.

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

Completeness2/5

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

No output schema is present. The description does not explain return format (lines concatenated or list?), error handling for missing files, or encoding assumptions. With no annotations and many sibling tools, the description is incomplete for an agent to use reliably.

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% (all 3 parameters have descriptions). The tool description adds 'text file' context, but that is already implied by the tool name. The description does not provide additional semantic value beyond the schema, so baseline 3 is appropriate.

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 'Read a text file from the device' uses a specific verb ('read') and resource ('text file') with context ('from device'), clearly distinguishing it from sibling tools like adb_ls or adb_find.

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?

No guidance on when to use this tool versus alternatives. Many sibling tools for file operations exist (e.g., adb_ls, adb_find, adb_pull, adb_push), and the description fails to mention appropriate contexts or exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/fullread/DeepADB'

If you have feedback or need assistance with the MCP directory API, please join our Discord server