python-debugpy

python-debugpy is a skill for Claude Code, Codex from nativ3ai/hermes-agent-camel. It costs 17 tokens per session (3,626 once invoked), scanned B, a copy of python-debugpy, MIT.

A Python debugging guide covering pdb for interactive local debugging and debugpy for attaching to running or remote processes.

In plain words
What is it for?
It is for stepping through Python functions, inspecting changing data, examining long-running processes, and investigating subprocesses or crash locations.
Why use it?
It helps you inspect program state when an error message, traceback, or logging does not explain why a value or process behaves incorrectly.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for hermes-agent. Also seen: mentions subagents; built for hermes-agent.

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/bb/hermes-agent/.venv/bin/activate.

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for python-debugpy

README.md
[![agentmods](https://agentmods.dev/badge/skills/nativ3ai/hermes-agent-camel/python-debugpy.svg)](https://agentmods.dev/skills/nativ3ai/hermes-agent-camel/python-debugpy)
Your own site
<a href="https://agentmods.dev/skills/nativ3ai/hermes-agent-camel/python-debugpy"><img src="https://agentmods.dev/badge/skills/nativ3ai/hermes-agent-camel/python-debugpy.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,626 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin 95% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00017 $0.03626
Opus 5 $0.00009 $0.01813
Sonnet 5 $0.00003 $0.00725
Haiku 4.5 $0.00002 $0.00363

Measured 2d ago against content hash 338c7f94a562, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

python-debugpy scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
Origin

This is a copy

95% identical to python-debugpy — 23 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/software-development/python-debugpy/SKILL.md · 375 lines

How it starts

The opening of the file, as written. The whole thing — 375 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Python Debugger (pdb + debugpy)

Overview

Three tools, picked by situation:

Tool When
breakpoint() + pdb Local, interactive, simplest. Add breakpoint() in the source, run normally, get a REPL at that line.
python -m pdb Launch an existing script under pdb with no source edits. Useful for quick poking.
debugpy Remote / headless / "attach to already-running process." Talks DAP, scriptable from terminal, works for long-lived processes (gateway, daemon, PTY children).

Start with breakpoint(). It's the cheapest thing that works.

When to Use

  • A test fails and the traceback doesn't reveal why a value is wrong
  • You need to step through a function and watch a collection mutate
  • A long-running process (hermes gateway, tui_gateway) misbehaves and you can't restart it
  • Post-mortem: an exception fired in prod-ish code and you want to inspect locals at the crash site
  • A subprocess / child (Python _SlashWorker, PTY bridge worker) is the actual bug site

Don't use for: things print() / logging.debug solve in under a minute, or things pytest -vv --tb=long --showlocals already reveals.

pdb Quick Reference

Inside any pdb prompt ((Pdb)):

Command Action
h / h cmd help
n next line (step over)
s step into
r return from current function
c continue
unt N continue until line N
j N jump to line N (same function only)
l / ll list source around current line / full function
w where (stack trace)
u / d move up / down in the stack
a print args of the current function
p expr / pp expr print / pretty-print expression
display expr auto-print expr on every stop
b file:line set breakpoint
b func break on function entry
b file:line, cond conditional breakpoint
cl N clear breakpoint N
tbreak file:line one-shot breakpoint
!stmt execute arbitrary Python (assignments included)
interact drop into full Python REPL in current scope (Ctrl+D to exit)
q quit

Read the full file on GitHub · 375 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 375 lines · 17 tokens per session scan B 338c7f94a562

Subscribe to this mod's changes

python-debugpy is a skill published in the GitHub repository nativ3ai/hermes-agent-camel (196 stars, last pushed 4mo ago), licensed MIT. It adds 17 tokens to every session and 3,626 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). It is 95% identical to python-debugpy, differing in 23 lines, and is treated as a copy.

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