Borrowing it
Nothing to install: this file belongs to harmonicabot/harmonica-chat. 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/harmonicabot/harmonica-chat/master/CLAUDE.mdgit clone --depth 1 https://github.com/harmonicabot/harmonica-chatWrote 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/harmonicabot/harmonica-chat/claude-md)<a href="https://agentmods.dev/instructions/harmonicabot/harmonica-chat/claude-md"><img src="https://agentmods.dev/badge/instructions/harmonicabot/harmonica-chat/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>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.
<a href="https://agentmods.dev/instructions/harmonicabot/harmonica-chat/claude-md"><img src="https://agentmods.dev/badge/instructions/harmonicabot/harmonica-chat/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.02726 | $0.02726 |
| Opus 5.5 | $0.01090 | $0.01090 |
| Sonnet 5.5 | $0.00545 | $0.00545 |
| Haiku 4.5 | $0.00273 | $0.00273 |
Grade A, and why
harmonica-chat CLAUDE.md scanned grade A with 1 finding 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 7d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
**Version auto-update.** The version comment near the top of SKILL.md is `<!-- harmonica-chat vX.Y.Z -->`. Guided design checks GitHub and notifies users if outdated; every Harmonica MCP call includes this installed vers How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
harmonica-chat is a Claude Code skill (/harmonica-chat) that designs, creates, and manages Harmonica deliberation sessions. It's distributed as a thin entry router (SKILL.md) plus lazy-loaded reference files (reference/*.md) that users install to ~/.claude/skills/harmonica-chat/.
The skill uses Harmonica MCP for API access. New installs default to Pro's hosted
endpoint, https://app.harmonica.chat/api/mcp/mcp. The
harmonica-mcp npm package remains
a maintenance-only compatibility option for stdio and self-hosted REST APIs.
Preserve existing registrations when updating the skill; do not silently migrate
them. Installers store an environment-variable reference for new hosted
connections, so the key must remain in the environment that launches the agent.
Repository Structure
SKILL.md— Entry router (~120 lines). Frontmatter, prerequisites, session design laws, argument routing, commands menu. This file MUST stay thin; subcommand logic lives inreference/.reference/— subcommand reference files. Loaded on demand by the entry router.design.md— Mode 1: guided session design, 14 stepsaccelerated.md— Mode 2: topic-upfront flow + project-aware creationstatus.md,check.md,summary.md,edit.md,review.md,follow-up.md— lifecycle commandsinvitation.md— post-creation invitation flow (join URL, draft message, community feed)expertise.md— soft-nudge session design heuristics (goal quality, context calibration, cross-pollination, critical questions)onboarding.md— hosted-MCP continuation for a saved Shape C flow; ordinary local-npm sessions stay on existing routes
Templates are NOT in reference/ — they're fetched at runtime via mcp__harmonica__list_templates (harmonica-mcp ≥ 0.11.0). The Harmonica admin panel is the single source of truth; the skill never hardcodes a template list. See HAR-1227.
install.sh/install.ps1— One-line installers. Download SKILL.md + all reference files. v3.0.0+ also migrates the legacy v2.x slash-command install (removes~/.claude/commands/harmonica-chat.mdif present).docs/plans/— Design docs for major rewrites (reference only, not part of the product).
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.
- 7d ago Changed · +12 lines · +139 tokens per session 6047c68c3492
- 29d ago Changed · +4 lines · +558 tokens per session 1f50527a625f
- 1mo ago Changed · +10 lines · +521 tokens per session f17a38b9798d
- 1mo ago Changed · +65 tokens per session b0d42f6b691f
- 2mo ago First seen · 69 lines · 1,443 tokens per session scan A 3a7106c1df86
harmonica-chat CLAUDE.md is an instructions file published in the GitHub repository harmonicabot/harmonica-chat (2 stars, last pushed 7d ago), licensed MIT. It adds 2,726 tokens to every session, about $0.0109 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
harmonica-chat CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| harmonica-chat CLAUDE.mdharmonicabot/harmonica-chat | Instructions file | 2 | 7d ago | MIT | A | 2,726 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 144k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,685 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 281k | yesterday | MIT | A | 4,335 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,086 | GitHub Copilot |