Python for Codex

3,840 mods tagged Python that install into Codex, measured the same four ways as everything else here: what each costs in tokens on every session, what a security scan found and why, whether it is the original, and what changed.

Also for Codex: anthropic · Git and workflow · Web3 and blockchain · React · TypeScript · Go · openai · android · docker · Rust · nextjs · Localization

bnlearn

73

erdogant/bnlearn

Skill Claude CodeCodex

Use this skill when working with bnlearn for causal discovery; a Python library for Bayesian modeling, probabilistic graphical models, causal discovery, parameter learning, structure learning, inference, do-why calculus (dowhy), sampling, and directed acyclic graphs (DAG).

not rated 645 changed yesterday A 57 tokens

winstonkoh87/Athena-Public

Skill Claude CodeCodex

Unified business model evaluator, client filter, pricing engine, and distribution architect. Absorbs 31 business + 8 marketing + 13 content + 2 acquisition protocols.

not rated 619 +5 today A SkillSpector: pass 43 tokens original MIT

datafusion-python

75

apache/datafusion-python

Skill Claude CodeCodex ✓ vendor

Use when the user is writing datafusion-python (Apache DataFusion Python bindings) DataFrame or SQL code. Covers imports, data loading, DataFrame operations, expression building, SQL-to-DataFrame mappings, idiomatic patterns, and common pitfalls.

not rated 610 +2 changed 18d ago A SkillSpector: pass 54 tokens original Apache-2.0

MazzaWill/neo4j-python-pandas-py2neo-v3

Skill Codex

Use when designing, importing, querying, or modernizing Neo4j knowledge graphs from CSV, Excel, pandas, Cypher, py2neo, the official neo4j Python driver, vector indexes, or GraphRAG workflows.

not rated 580 13d ago A SkillSpector: pass 55 tokens original MIT

enferno

77

level09/enferno

MCP server Claude CodeCodexCursor +2

A simple framework for building complex web applications. Runs locally from the flask Python package.

not rated 568 today A Socket: warn tokens not measured original MIT

wdoc-skill

78

thiswillbeyourgithub/wdoc

Skill Claude CodeCodex

Comprehensive reference for wdoc, a RAG CLI and Python library that summarizes, searches, and queries documents across 20+ filetypes (PDF, YouTube, audio, Anki, web, Zotero, Karakeep, and more) through LiteLLM (100+ LLM providers). Use when the user runs or asks about the wdoc command, imports from wdoc import wdoc…

not rated 544 10d ago A 121 tokens AGPL-3.0

tt-sidebar

79

stormzhang/token-tracker

Skill Codex

Open a live Token Tracker sidebar for only the current Codex session in a right-side terminal split at one-third width. Use when the user explicitly invokes $tt-sidebar or asks to monitor the current Codex session beside its terminal pane.

not rated 533 +3 12d ago A SkillSpector: pass 50 tokens original MIT

pymapdl-cli

80

ansys/pymapdl

Skill Claude CodeCodex

How to use the PyMAPDL command-line interface to start, stop, list, and execute commands on MAPDL instances from a terminal. Use this skill whenever the user wants to control MAPDL from the command line, run APDL commands via the shell, manage running MAPDL processes, script MAPDL workflows without writing Python, or…

not rated 526 +2 today A SkillSpector: pass 90 tokens original MIT

autonomous-research

81

federicodeponte/opendraft

Skill Claude CodeCodex

An 18-agent pipeline that turns one topic line into a drafted research paper, literature review, or thesis chapter. Finds real sources at Crossref and OpenAlex, drafts each section against them, attacks its own draft for weak claims, then compiles citations deterministically so in-text markers map one to one onto the…

not rated 514 +1 6d ago A 144 tokens original MIT

jkawamoto/mcp-youtube-transcript

MCP server Claude CodeCodexCursor +2

MCP server "mcp-youtube-transcript" as configured in jkawamoto/mcp-youtube-transcript. Launched with https://github.com/jkawamoto/mcp-youtube-transcript/releases/download/v0.8.0/mcp.

not rated 492 +2 changed 18d ago A tokens not measured original MIT

nvmolkit-usage

83

NVIDIA-BioNeMo/bionemo-agent-toolkit

Skill Claude CodeCodex

Use when writing or debugging nvMolKit Python code for GPU-accelerated RDKit fingerprints, similarity, conformers, clustering, and molecular searches.

not rated 494 +4 changed 3d ago A 37 tokens

clawmetry-selfcheck

84

vivekchand/clawmetry

Skill Claude CodeCodex

Read your own agent telemetry from ClawMetry (waste, progress, cost) and act on it before finishing a task. Use when ClawMetry is installed on this machine and you want to check whether you are re-reading files, spinning in loops, or burning budget.

not rated 436 +9 2d ago A SkillSpector: pass 64 tokens original MIT

haddock-development/claude-reflect-system

Skill Claude CodeCodex

Creates Python projects with proper structure, virtual environments, and dependency management. Use when users request to create a new Python project, set up a Python development environment, or initialize a Python application with standard tooling.

not rated 384 +1 9mo ago A 46 tokens

bottube

86

Scottcjn/bottube

Skill Claude CodeCodex

Browse, upload, and interact with videos on BoTTube (bottube.ai) - a video platform for AI agents. Generate videos with any tool and share them.

not rated 367 15d ago D 0 tokens original MIT

depyler

87

paiml/depyler

MCP server Claude CodeCodexCursor +2

MCP server "depyler" as configured in paiml/depyler. Launched with depyler agent start --foreground --port 3000. Needs 2 environment variables to run.

not rated 365 +1 9d ago A tokens not measured original MIT

EpicStaff/EpicStaff

Skill Claude CodeCodex

Use when designing the variables namespace for an EpicStaff flow, translating business requirements into node graph contracts, or deciding which node type fits a responsibility.

not rated 359 changed 1mo ago A 37 tokens

precise

89

microprediction/precise

Skill Claude CodeCodex

Online (incremental) covariance, correlation, and precision estimation in Python — the streaming complement to sklearn.covariance. Use when code needs a covariance/correlation matrix updated per observation, recomputes np.cov/np.corrcoef in a rolling loop, must judge or compare covariance estimates, or proposes a new…

not rated 337 17d ago A 76 tokens original MIT

spotifyscraper

90

AliAkhtari78/SpotifyScraper

MCP server Claude CodeCodexCursor +2

Extract public Spotify data — tracks, albums, artists, playlists, podcasts, and lyrics — without the official API. Sync + async, typed, one dependency. Runs locally from the spotifyscraper Python package. Needs 1 environment variable to run.

not rated 322 +1 1mo ago A tokens not measured original MIT

decoupler

91

scverse/decoupler

Skill Claude CodeCodex

Use for any task involving the decoupler library — inferring biological activity/enrichment scores from omics data (bulk, single-cell, spatial). Triggers on estimating transcription factor (TF) activity, pathway activity, or gene-set enrichment from an AnnData/DataFrame; running ulm, mlm, ora, gsea, gsva, aucell…

not rated 300 today A SkillSpector: pass 220 tokens original BSD-3-Clause

unsloth-buddy

92

TYH-labs/unsloth-buddy

Skill Claude CodeCodex

This skill should be used when users want to fine-tune language models or perform reinforcement learning (SFT, DPO, GRPO, ORPO, KTO, SimPO) using the highly optimized Unsloth library. Covers environment setup, LoRA patching, VRAM optimization, vision/multimodal fine-tuning, TTS, embedding training, and…

not rated 282 +2 3mo ago C 123 tokens original MIT

nvmolkit-usage

93

NVIDIA-BioNeMo/nvMolKit

Skill Claude CodeCodex

Use when writing or debugging nvMolKit Python code for GPU-accelerated RDKit fingerprints, similarity, conformers, clustering, and molecular searches.

not rated 280 +1 changed 20d ago A 37 tokens

edge-python

94

dylan-sutton-chavez/edge-python

Skill Claude CodeCodex

Write, run, test and package Edge Python programs with the edge CLI. Use when editing .py files in an Edge Python project or when the user asks for Edge Python code.

not rated 273 +1 changed 5d ago A SkillSpector: warn 39 tokens original

pyscrappy

95

mldsveda/PyScrappy

MCP server Claude CodeCodexCursor +2

A robust, all-in-one Python web scraping toolkit. Runs locally from the pyscrappy Python package. Needs 1 environment variable to run.

not rated 263 +2 today A tokens not measured original MIT

icesixgod/codex-trajectory

Skill Claude CodeCodex

Inspect or show a local Codex task trajectory, including turns, approximate model steps, assistant messages, reasoning summaries, tool calls, failures, compaction, token usage, and timing. Use when the user asks for a trajectory, execution trace, task timeline, slow-tool analysis, current-task timing distribution…

not rated 250 +1 changed today A SkillSpector: pass 88 tokens original MIT

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: