Skip to main content
Glama

get_source_context

Retrieve code context around a specified line in a source file to aid debugging by showing surrounding lines.

Instructions

Get source context around a specific line in a file

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sessionIdYes
fileYesPath to the source file. Use absolute paths or paths relative to your current working directory
lineYesLine number to get context for
linesContextNoNumber of lines before and after to include (default: 5)
Behavior2/5

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

No annotations provided; description does not disclose whether it is a read-only operation, required permissions, or error behavior for invalid file/line.

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?

Single sentence, no redundant words; efficient but could benefit from brief additional context.

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?

For a tool with 4 parameters and no output schema or annotations, description is insufficient to guide correct invocation and understanding of behavior.

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

Parameters2/5

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

Description does not elaborate on any parameters; schema covers 75% of parameters but missing sessionId description; no added value beyond schema.

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?

Description clearly states the action 'get' and the resource 'source context around a specific line in a file', distinguishing it from sibling debug control tools.

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 like stack trace or variable inspection, nor any prerequisites 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/debugmcp/mcp-debugger'

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