recursive-improve

make your agents recursively self-improve

90% of Claude's code is now written by Claude. Recursive self-improvement is already happening at Anthropic. What if you could do the same for your own agents?

Closing the Loop

You have an agent. It works, most of the time. But it could be better. Solving harder problems, handling more edge cases, wasting fewer tokens. What if it could improve itself, recursively, every time it runs?

Right now, it can't. Your agent is stateless. Every run starts from scratch. The only way to improve it is to manually improve it. There is no compounding of improvements.

recursive-improve closes this loop:

Your agent runs. Every LLM call is captured. Your coding agent analyzes the traces, identifying common failure patterns across runs, and applies targeted fixes. You run it again. It's better.

Get Started

1. Install

uv tool install "recursive-improve[all] @ git+https://github.com/kayba-ai/recursive-improve.git"

Then in your agent's project directory:

cd /path/to/your/agent
recursive-improve init

This creates the /recursive-improve skill files and the eval/traces/ directory.

2. Add tracing to your agent

Add the tracing dependency to your project:

uv add "recursive-improve @ git+https://github.com/kayba-ai/recursive-improve.git"

Two lines. Your agent code stays unchanged, but now your agents execution traces get saved locally.

import recursive_improve as ri

ri.patch()  # auto-captures openai, anthropic, litellm calls

with ri.session("./eval/traces") as run:
    result = my_agent("book a flight to Paris")
    run.finish(output=result, success=True)

Already have traces? Drop them in eval/traces/ and skip to step 4.

3. Run your agent a few times to generate traces

4. Run the improvement loop

Open Claude Code or Codex in your project directory:

/recursive-improve

5. Re-run your agent

Clear old traces and run your agent again so the benchmark measures your improved code:

rm -f eval/traces/*.json
# run your agent the same way as step 3

6. Benchmark

Measure whether your changes actually solved the problems:

/benchmark

Results are stored in eval/benchmark_results.json and auto-compared against the previous run on the same dynamic metrics that were generated for your agent.

CLI alternative: recursive-improve benchmark --label "v1-baseline" and recursive-improve benchmark list

7. Dashboard

Start the interactive dashboard to visualize your improvement cycles:

recursive-improve dashboard          # default: http://localhost:8420
recursive-improve dashboard -p 8080  # custom port

Each improvement cycle lives on its own branch. The dashboard shows before/after metrics for every cycle. See exactly what improved, merge the wins, discard the rest.

8. Run it overnight

/ratchet

An autoresearch-style autonomous loop. It asks you what to optimize, then repeats: improve → run agent → eval → keep or revert. Only improvements survive. Check eval/ratchet_summary.md when you wake up.

[!TIP] Want deeper analysis? Kayba offers managed recursive agent improvement at scale, tailored to your agent.

How It Works

When you run the /recursive-improve skill, it walks through a structured pipeline:

1. Build context: detects your agent's architecture, tools, and system prompt
2. Analyze traces: reads your traces, surfaces failure patterns, missed opportunities, recurring errors
3. Measure: runs built-in detectors (loops, give-ups, errors, recovery) and generates custom domain-specific evaluations from your insights, then computes baselines
4. Plan: triages each insight into discard / code fix / prompt fix, prioritized by impact
5. Review: presents the plan for your approval before anything changes
6. Fix: implements approved changes on a dedicated branch

Every fix traces back to a specific insight, linked to a specific metric.

Architecture

your agent  ──>  ri.patch() + ri.session()  ──>  eval/traces/*.json
                                                        │
                                                        ▼
                                                  /recursive-improve
                                                        │
                                                        ▼
                                              improved agent code  ──>  repeat
                                                        │
                                                        ▼
                                                    benchmark  ──>  recursive-improve dashboard

                              ┌──────────────────────────────┐
                              │  /ratchet (autonomous loop)   │
                              │  improve → run → eval →       │
                              │  keep or revert → repeat      │
                              └──────────────────────────────┘

• ri.patch(): monkey-patches OpenAI, Anthropic, and LiteLLM clients to capture every call
• ri.session(): context manager that writes structured trace JSON files
• /recursive-improve: Claude Code / Codex skill that analyzes traces and applies fixes
• recursive-improve benchmark: snapshot metric quality, store, and compare over time
• recursive-improve dashboard: web UI to visualize runs and compare branches
• /ratchet: autonomous keep-or-revert loop that runs /recursive-improve repeatedly overnight

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Built with ❤️ by Kayba and the open-source community.