arbor
FridrichMethod/awesome-skillsAutonomously improve a real artifact (code, training recipe, agent harness, data pipeline, prompt) against an objective and an evaluator, using Hypothesis…
Scores out of 100 · grade B+
2026-08-18Works
40% of the score92/100
- Names 1 tool Claude Code does not ship: Read Write Edit Bash Agent.
Maintained
25% of the score94/100
- no commits in the last 12 weeks
- no license file
Adopted
20% of the score16/100
- 13 stars on the source repo.
Documented
15% of the score100/100
- 1,871 words with worked examples.
- Ships 5 bundled files.
Install
npx skills add FridrichMethod/awesome-skills/arborWhat the check found
| Finding | What it means |
|---|---|
| Unknown tools | It allow-lists tool names Claude Code does not ship, which usually means a typo. |
| No license | The repository ships no license file, so the reuse terms are unclear. |
What it says it does
Autonomously improve a real artifact (code, training recipe, agent harness, data pipeline, prompt) against an objective and an evaluator, using Hypothesis Tree Refinement (HTR) from the Arbor paper. Use this whenever someone wants to iteratively optimize something over many experiments without overfitting — e.g. "get my model's eval score up", "improve this agent/harness", "tune this pipeline", "beat the baseline on this benchmark", "run a search over approaches and keep the best", "do an MLE-bench / Kaggle-style optimization", or any long-horizon "make this artifact better and don't just memorize the dev set" task. Trigger it even when the user doesn't say "Arbor" or "hypothesis tree" but describes repeated experiment-and-evaluate loops, branching exploration of competing ideas, or worries about a dev/test gap. Runs Claude itself as the coordinator with subagent executors in isolated git worktrees; for the standalone `arbor` CLI tool see references/arbor-upstream.md.
Also in FridrichMethod/awesome-skills
| Artifact | Score | What the check found | Type | Reach | Last commit |
|---|---|---|---|---|---|
| agent-developmentFridrichMethod/awesome-skills | No license | Skill | 13 stars | 2 days ago | |
| arboretoFridrichMethod/awesome-skills | No license | Skill | 13 stars | 2 days ago | |
| arxiv-databaseFridrichMethod/awesome-skills | No license | Skill | 13 stars | 2 days ago | |
| bidsFridrichMethod/awesome-skills | No license | Skill | 13 stars | 2 days ago | |
| api-design-principlesFridrichMethod/awesome-skills | No license | Skill | 13 stars | 2 days ago | |
| astropy-astronomyFridrichMethod/awesome-skills | No license | Skill | 13 stars | 2 days ago |
Other ai & agents skills
Browse all| Artifact | Score | What the check found | Category | Reach | Last commit |
|---|---|---|---|---|---|
| mcp-builderanthropics/skills | No license | AI & agents | 104,949 installs | today | |
| agent-developmentanthropics/claude-plugins-official | clean | AI & agents | 5,901 installs | today | |
| plugin-settingsanthropics/claude-plugins-official | clean | AI & agents | 5,465 installs | today | |
| skill-creatoranthropics/claude-plugins-official | clean | AI & agents | 5,836 installs | today | |
| microsoft-foundrymicrosoft/azure-skills | clean | AI & agents | 544,819 installs | today | |
| claude-apianthropics/skills | No license | AI & agents | 59,236 installs | today |
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