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pwndbg_parse_seccomp

Parse a seccomp BPF filter from memory and dump its rules. Reads a struct sock_fprog to disassemble the BPF program and shows allowed/denied syscalls.

Instructions

Parse a seccomp BPF filter from memory and dump its rules.

pwndbg command: parse-seccomp Source: pwndbg/commands/parse_seccomp.py Category: Linux/libc/ELF

Reads a struct sock_fprog from memory and disassembles the BPF filter program to show which syscalls are allowed/denied.

Args: session_id: The UUID of the session. addr: Address of the sock_fprog structure.

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

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idYes
addrYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

With no annotations, the description carries the burden. It states reading from memory and disassembling, implying a read-only operation, but does not explicitly confirm no side effects or disclose potential failures. It adds moderate value beyond the name.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with a clear sentence, but includes extraneous metadata (source file, category, URL) that does not aid an AI agent in selecting or invoking the tool. Could be more concise.

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?

The description covers the tool's main action and parameter explanations. It does not describe the output format, but with an output schema present, that burden is reduced. Overall, it is adequate for a complex tool with few parameters.

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?

The schema has 0% description coverage, but the description explicitly defines both session_id and addr (UUID of session, address of sock_fprog). This adds significant meaning beyond the schema titles, compensating for the coverage gap.

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 the tool parses a seccomp BPF filter from memory and dumps rules. It specifies the resource (seccomp BPF filter) and action (parse/disassemble). This is distinct from sibling tools like pwndbg_checksec or pwndbg_disassemble.

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?

The description provides no guidance on when to use this tool versus alternatives, nor any prerequisites or exclusions. It only states what it does, leaving the agent to infer usage context.

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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