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cap-evolve
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cap-evolve

Active·★ 66·Apache-2.0·Updated 2026-10-22

cap-evolve is an honesty-guaranteed framework that optimizes AI agent capabilities like prompts, tools, and skills by learning from failed evaluation traces. It automates the loop of evaluation, diagnosis, candidate generation, and validation, ensuring improvements are significant and honest.

#AI Agent Optimization#Prompt Engineering#Tool Code Optimization#Skill Package Improvement#Evaluation-driven Learning#LLM Evaluation
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Guides
#Automated Refinement
#Git-versioned Development
$ Install
$ git clone https://github.com/skillberry-ai/cap-evolve.git && cd cap-evolve && python3 -m venv .venv && source .venv/bin/activate && pip install ./core
↗ Visit site★ GitHub
01

Features

01Optimizes more than prompts, including executable tool code and entire skill packages.
02Learns from real agent failures and per-task causal feedback to make robust improvements.
03Ensures honest evaluation through a significance gate and a sealed, scored-once test split.
04Provides a dashboard to inspect every change, cost, timing, diff, and pass/fail heatmap.
02

Compatibility

Python
Runtime
Verified via docs
Git
Version Control
Verified via docs
Claude Code
Agent Host
Verified via docs
Docker
Container
Verified via docs
03

Quick start

1
$ git clone https://github.com/skillberry-ai/cap-evolve.git
2
$ cd cap-evolve
3
$ python3 -m venv .venv
4
$ source .venv/bin/activate
5
$ pip install ./core
04

Use cases

↳Optimizing AI agent capabilities when developing with Claude Code plugin.
↳Integrating and refining agents from various coding-agent hosts like Codex, Gemini, or Droid.
↳Custom integration for developers who want to wire their own agent adapters and drive the CLI directly.
↳Applying pre-built adapter templates for popular benchmarks and data formats (e.g., JSONL, HuggingFace, tau2-bench).
05

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skillberry-ai /
cap-evolve
↗

Optimize any AI agent’s skills, tools/MCP, and prompts against your own evals.

66Apache-2.0
Last commit1d ago
StatusActive
CategoryLLM Infra
Links
Documentation↗Discussion↗Issues↗Releases↗
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