Borrowing it
Nothing to install: this file belongs to Arch1eSUN/Arcgentic. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Arch1eSUN/Arcgentic/main/CLAUDE.mdgit clone --depth 1 https://github.com/Arch1eSUN/ArcgenticWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/arch1esun/arcgentic/claude-md)<a href="https://agentmods.dev/instructions/arch1esun/arcgentic/claude-md"><img src="https://agentmods.dev/badge/instructions/arch1esun/arcgentic/claude-md.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.06622 | $0.06622 |
| Opus 5 | $0.03311 | $0.03311 |
| Sonnet 5 | $0.01324 | $0.01324 |
| Haiku 4.5 | $0.00662 | $0.00662 |
Grade A, and why
Arcgentic 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 408 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Arcgentic v0.2.0 — Dev Session Handoff
This file is auto-loaded by Claude Code at session start. Read fully before any action. This is your single source of orientation for executing arcgentic v0.2.0.
1. Identity
You are a dev session continuing arcgentic development.
- Previous milestone: v0.1.0-alpha.2 MVP, tagged @
2efea61onmain, fully pushed toorigin/main. SeeCLAUDE-v0.1.0-handoff.mdfor that session's context (archived). - Current milestone: v0.2.0 — full role coverage (the P0 group in spec § 19.3 three-phase split).
- Build contract for this session:
docs/plans/2026-05-13-arcgentic-v0.2.0-spec.md(3366 LOC / 23 sections, self-contained — read in full before Task 1). - ⚠ Spec Amendment 01 — AUTHORITATIVE (overrides spec § 18 / § 21.5 / § 22 directory paths):
docs/plans/2026-05-13-arcgentic-v0.2.0-spec-amendment-01-layout.md. Read this BEFORE spec § 18. Founder ratified the cascade-spec-bug fix on 2026-05-13: hybrid monorepo — markdown skills/agents at repo root (v0.1 plugin contract preserved); Python toolkit attoolkit/src/arcgentic/(PyPI-publishable CLI); markdown skills shell out toarcgenticCLI.
You execute the spec end-to-end for the P0 release only (v0.2.0 release; ~18h estimated). P1 (v0.2.1) and P2 (v0.2.2) are out of scope for this session.
2. NOT-this (boundary)
| Boundary | Why it matters |
|---|---|
NOT Moirai (~/Desktop/Arc Studio/Moirai/) |
arcgentic is a separate plugin. Do not touch Moirai files. Do not commit to Moirai repo. (Spec § 23 cites Moirai as origin — that does NOT grant write access.) |
| NOT v0.1.0-alpha.2 rebuild | v0.1.0 is closed. Tag v0.1.0-alpha.2 @ 2efea61 is published. Do not rewrite v0.1.0 history; do not amend any commit prior to HEAD-of-this-session. |
| NOT v0.2.1 (P1) work | Per spec § 19.3: P1 = codify-lesson skill + track-refs skill + lesson-codifier + ref-tracker agents. These ship in v0.2.1, NOT v0.2.0. |
| NOT v0.2.2 (P2) work | Per spec § 19.3: P2 = cross-session-handoff skill. Ships in v0.2.2. |
| NOT a planner role | Spec is already a plan-level document (more detailed than v0.1.0's plan). Your job is execution, not plan-writing. If you find a spec gap → surface to founder; do NOT silently expand. |
| NOT an auditor role | External audit happens after v0.2.0 ships. This session executes only. |
| NOT IDE adapter beyond spec § 3 | Spec § 3 defines IDEAdapter Protocol + 4 implementations. Do not invent new adapters for Cursor variants / JetBrains / etc. — that's v0.3+ scope. |
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.
- 6d ago First seen · 408 lines · 6,622 tokens per session scan A 892d16e0fe70
Arcgentic CLAUDE.md is an instructions file published in the GitHub repository Arch1eSUN/Arcgentic (292 stars, last pushed 24d ago), licensed MIT. It adds 6,622 tokens to every session, about $0.0331 per session on Opus 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 2026-08-30.
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