autoevolve: Instructions file for Claude Code

CLAUDE.md

autoevolve CLAUDE.md is an instructions file for Claude Code from RightNow-AI/autoevolve. It costs 4,773 tokens per session, scanned A, original, Apache-2.0.

A repository instruction file for AutoEvolve, an open system where coding agents improve software toward a stated goal by testing and comparing alternatives. It defines the repository's core rules, product areas, and layout.

In plain words
What is it for?
Use it to guide development, optimization work, repository navigation, and decisions about how agents should produce reports or pull requests.
Why use it?
It gives every coding session the same boundaries and priorities when working in the repository. This helps prevent changes that conflict with the system's required principles.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code; runs codex exec.

This is RightNow-AI/autoevolve's own configuration. It tells Claude Code how to work on autoevolve itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything autoevolve configures →

Reuse

Borrowing it

Nothing to install: this file belongs to RightNow-AI/autoevolve. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/RightNow-AI/autoevolve/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/RightNow-AI/autoevolve

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 4,773 This file is loaded in full into every session.
When invoked 4,773 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 5.1 $0.04773 $0.04773
Opus 5.5 $0.01909 $0.01909
Sonnet 5.5 $0.00955 $0.00955
Haiku 4.5 $0.00477 $0.00477

Measured 1mo ago against content hash 1fa42481e3a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

autoevolve CLAUDE.md scanned grade A with 0 findings 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 1mo ago.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 405 lines

How it starts

The opening of the file, as written. The whole thing — 405 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md — autoevolve

This file is the constitution of this repository. Every session, every agent, every unit of work obeys it. When a decision here conflicts with your instinct, this file wins. When something here is genuinely wrong, write a BLOCKERS.md entry with evidence and stop — do not silently deviate.


1. What autoevolve is

AutoEvolve is an open, agent-native evolutionary optimization and discovery system. A person states a goal in english — an issue, a CLI arg, a chat message. The system synthesizes a scoring contract, measures the baseline, checks feasibility, then evolves code toward the target with a parallel population of coding-agent workers, and ships the result as a report or a PR.

It exists to produce new things: faster kernels, better algorithms, new model architecture components, rediscovered and novel equations. Machines get an optimization substrate; humans get "if you can say it, you can evolve it."

The five invariants (the product — never trade these away)

  1. The agent IS the mutation operator. Claude Code / Codex sessions mutate candidates. They can profile, read compiler output, debug the evaluator, reason about failures. Never reduce mutation to a blind LLM diff call as the only path.
  2. The population outlives sessions. All evolution state lives in one store (SQLite) owned by the autoevolve server process. Worker sessions are stateless and disposable. Any MCP-speaking agent can join a run mid-flight.
  3. English in, contract out. Before any compute burns: synthesize evaluate.py, measure the baseline, compute a feasibility ceiling where possible, and lock the contract. The promise is always: hit the target, OR deliver best-found plus an evidence-backed explanation of the ceiling. Both are successful outcomes.
  4. It gets smarter every run. Top lineage diffs are distilled into natural-language discoveries persisted in the discovery ledger. Future runs sample relevant discoveries into mutation context. Knowledge compounds across runs and across problems.
  5. It evolves itself. Operator selection is a persistent per-domain UCB bandit over measured child-improvement rates. The system's own strategy is under optimization at all times.

Read the full file on GitHub · 405 lines

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. 1mo ago First seen · 405 lines · 4,773 tokens per session scan A 1fa42481e3a5

Subscribe to this mod's changes

autoevolve CLAUDE.md is an instructions file published in the GitHub repository RightNow-AI/autoevolve (5 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 4,773 tokens to every session, about $0.0191 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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