Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/savant0x/savant-code/coding-pythonnpx skills add savant0x/savant-code --skill coding-pythongit clone --depth 1 https://github.com/savant0x/savant-codeWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00021 | $0.00705 |
| Opus 5 | $0.00010 | $0.00352 |
| Sonnet 5 | $0.00004 | $0.00141 |
| Haiku 4.5 | $0.00002 | $0.00071 |
Grade A, and why
coding-python scanned grade A with 0 findings 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Python Coding Standards
Naming Conventions
| Element | Convention | Example |
|---|---|---|
| Classes | PascalCase | UserProfile, GameState |
| Functions | snake_case | calculate_distance, spawn_unit |
| Variables | snake_case | player_count, is_valid |
| Constants | UPPER_SNAKE_CASE | MAX_PLAYERS, TILE_SIZE |
| Modules | snake_case | player_manager.py |
| Packages | snake_case (no hyphens) | game_engine/ |
| Private | leading underscore | _internal_method |
| Dunder | double underscore | __init__, __repr__ |
| Type aliases | PascalCase | PlayerId = str |
| Enums | PascalCase (class) | class TileType(Enum) |
Patterns
Type Hints
- Use type hints on all public functions
- Use
from __future__ import annotationsfor forward refs - Prefer
list[int]overList[int](3.9+) - Use
Optional[X]orX | Nonefor nullable - Use Protocol for structural typing
Error Handling
- Define custom exception hierarchy
- Use specific exceptions, never bare
except: - Use context managers for resource cleanup
- Log exceptions with traceback at catch points
Imports
- Group: stdlib → third-party → local
- One blank line between groups
- Prefer absolute imports
- Use
__all__to control public API
File Structure
src/
├── __init__.py
├── __main__.py # Entry point
├── config.py # Configuration
├── exceptions.py # Custom exceptions
├── types.py # Type aliases and protocols
├── [module]/
│ ├── __init__.py
│ ├── models.py # Data classes / Pydantic models
│ ├── service.py # Business logic
│ └── tests/
│ ├── __init__.py
│ └── test_[module].py
Anti-Patterns to Flag
- Bare
except:without specific exception - Mutable default arguments (
def f(x=[])) -
type: ignorewithout justification - Wildcard imports (
from x import *) - Global mutable state
-
print()in production code (uselogging) - Magic numbers (extract to constants)
- God classes (>300 lines)
- Circular imports
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.
- 2d ago First seen · 88 lines · 21 tokens per session scan A 237beb9d33ba
coding-python is a skill published in the GitHub repository savant0x/savant-code (11 stars, last pushed 11d ago), licensed Apache-2.0. It adds 21 tokens to every session and 705 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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