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get_stack_trace

Retrieve the current call stack to trace all function calls leading to the current execution point in PHP debugging sessions.

Instructions

Get the current call stack showing all function calls leading to the current position

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idNoSession ID
Behavior2/5

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

No annotations are provided, so the description carries full burden. It mentions what the tool does but lacks behavioral details like whether it requires an active debugging session, how it handles errors, or the format of the returned stack trace. This is a significant gap for a tool with potential runtime implications.

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 a single, efficient sentence that front-loads the core purpose without unnecessary words. Every part earns its place by specifying the action and resource clearly, making it easy to parse quickly.

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?

Given the complexity of debugging tools and lack of annotations or output schema, the description is incomplete. It doesn't explain return values, error conditions, or dependencies like needing an active session, leaving gaps for the agent to operate effectively in this context.

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 the single parameter 'session_id' documented in the schema. The description adds no additional parameter information beyond implying context about 'current position', which doesn't clarify the parameter's role. Baseline 3 is appropriate as the schema handles parameter documentation adequately.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with a specific verb ('Get') and resource ('current call stack'), explaining it shows function calls leading to the current position. It distinguishes from siblings like get_function_history or get_session_state by focusing on immediate stack trace, though not explicitly contrasting them.

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 is provided on when to use this tool versus alternatives such as get_function_history or get_contexts. The description implies usage during debugging but lacks explicit context, prerequisites, or exclusions, leaving the agent to infer based on tool name alone.

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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