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pwndbg_distance

Calculate the distance between two memory addresses, or get the page offset from a single address to aid in exploit development.

Instructions

Calculate the distance between two addresses.

pwndbg command: distance Source: pwndbg/commands/distance.py Category: Memory

If only one argument is given, prints the offset from the address's page base. Useful for calculating offsets for exploits.

Args: session_id: The UUID of the session. a: First address or expression. b: Optional second address or expression.

See: https://pwndbg.re/2025.05.30/reference/pwndbg/commands/distance/

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idYes
aYes
bNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It describes the operation (distance calculation, offset) and notes it is a command from pwndbg. However, it does not specify the output format or error conditions, nor does it mention any side effects.

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 concise, front-loaded with the purpose, and well-structured with sections for command info, behavior explanation, and argument descriptions. Every sentence adds value.

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

Completeness4/5

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

Given the simplicity of the tool and existence of an output schema, the description adequately covers core functionality (two-address distance, single-address page offset). It includes a reference link for further details, leaving no major gaps for an AI agent.

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

Parameters4/5

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

With 0% schema description coverage, the description adds meaning: 'a: First address or expression', 'b: Optional second address or expression', and 'session_id: The UUID of the session'. This goes beyond the schema titles, though it could be more explicit about what constitutes a valid expression.

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 clearly states 'Calculate the distance between two addresses' and elaborates on the single-argument case (offset from page base), which distinguishes it from sibling tools like 'pwndbg_p2p' or 'pwndbg_telescope'.

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

Usage Guidelines3/5

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

The description mentions 'Useful for calculating offsets for exploits' and explains behavior for one vs two arguments, but lacks explicit guidance on when not to use it or alternatives among siblings.

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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