etetoolkit

A toolkit for working with phylogenetic trees, which show possible evolutionary relationships among species or genes. It can read, edit, compare, analyse, and draw these trees.

In plain words
What is it for?
Use it to read and write Newick, NHX, PhyloXML, and NeXML files; prune or reroot trees; calculate distances; detect evolutionary events; compare tree structures; use taxonomy data; and export visualisations.
Why use it?
It provides one place to handle tree files and evolutionary analyses instead of writing separate code for tree editing, measurements, comparisons, and visual output.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/magic3007/dotfiles/etetoolkit
Any agent
npx skills add magic3007/dotfiles --skill etetoolkit
Clone the repo
git clone --depth 1 https://github.com/magic3007/dotfiles

Made for: Claude Code, Codex.

Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,540 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin 97% 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 $0.00046 $0.04540
Opus 5 $0.00023 $0.02270
Sonnet 5 $0.00009 $0.00908
Haiku 4.5 $0.00005 $0.00454

Measured 2d ago against content hash bdcf66329c16, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

etetoolkit 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.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/quick_visualize.py, scripts/tree_operations.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

sudo apt-get install python3-pyqt5 python3-pyqt5.qtsvg
Origin

This is a copy

97% identical to etetoolkit — 4 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.

claude/skills/scientific-agent-skills/skills/etetoolkit/SKILL.md · 623 lines

How it starts

The opening of the file, as written. The whole thing — 623 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ETE Toolkit Skill

Overview

ETE (Environment for Tree Exploration) is a toolkit for phylogenetic and hierarchical tree analysis. Manipulate trees, analyze evolutionary events, visualize results, and integrate with biological databases for phylogenomic research and clustering analysis.

Core Capabilities

1. Tree Manipulation and Analysis

Load, manipulate, and analyze hierarchical tree structures with support for:

  • Tree I/O: Read and write Newick, NHX, PhyloXML, and NeXML formats
  • Tree traversal: Navigate trees using preorder, postorder, or levelorder strategies
  • Topology modification: Prune, root, collapse nodes, resolve polytomies
  • Distance calculations: Compute branch lengths and topological distances between nodes
  • Tree comparison: Calculate Robinson-Foulds distances and identify topological differences

Common patterns:

from ete3 import Tree

# Load tree from file
tree = Tree("tree.nw", format=1)

# Basic statistics
print(f"Leaves: {len(tree)}")
print(f"Total nodes: {len(list(tree.traverse()))}")

# Prune to taxa of interest
taxa_to_keep = ["species1", "species2", "species3"]
tree.prune(taxa_to_keep, preserve_branch_length=True)

# Midpoint root
midpoint = tree.get_midpoint_outgroup()
tree.set_outgroup(midpoint)

# Save modified tree
tree.write(outfile="rooted_tree.nw")

Use scripts/tree_operations.py for command-line tree manipulation:

# Display tree statistics
python scripts/tree_operations.py stats tree.nw

# Convert format
python scripts/tree_operations.py convert tree.nw output.nw --in-format 0 --out-format 1

# Reroot tree
python scripts/tree_operations.py reroot tree.nw rooted.nw --midpoint

# Prune to specific taxa
python scripts/tree_operations.py prune tree.nw pruned.nw --keep-taxa "sp1,sp2,sp3"

# Show ASCII visualization
python scripts/tree_operations.py ascii tree.nw

2. Phylogenetic Analysis

Analyze gene trees with evolutionary event detection:

  • Sequence alignment integration: Link trees to multiple sequence alignments (FASTA, Phylip)
  • Species naming: Automatic or custom species extraction from gene names
  • Evolutionary events: Detect duplication and speciation events using Species Overlap or tree reconciliation
  • Orthology detection: Identify orthologs and paralogs based on evolutionary events
  • Gene family analysis: Split trees by duplications, collapse lineage-specific expansions

Read the full file on GitHub · 623 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 623 lines · 46 tokens per session scan B bdcf66329c16

Subscribe to this mod's changes

etetoolkit is a skill published in the GitHub repository magic3007/dotfiles (10 stars, last pushed 6d ago), licensed MIT. It adds 46 tokens to every session and 4,540 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). It is 97% identical to etetoolkit, differing in 4 lines, and is treated as a copy.

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