Borrowing it
Nothing to install: this file belongs to getmunin/munin. 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/getmunin/munin/main/CLAUDE.mdgit clone --depth 1 https://github.com/getmunin/muninWrote 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/getmunin/munin/claude-md)<a href="https://agentmods.dev/instructions/getmunin/munin/claude-md"><img src="https://agentmods.dev/badge/instructions/getmunin/munin/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/getmunin/munin/claude-md"><img src="https://agentmods.dev/badge/instructions/getmunin/munin/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 | $0.08209 | $0.08209 |
| Opus 5.5 | $0.03284 | $0.03284 |
| Sonnet 5.5 | $0.01642 | $0.01642 |
| Haiku 4.5 | $0.00821 | $0.00821 |
Grade A, and why
munin 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 27d 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 — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Munin — agent guide
MCP-first customer platform made for the agentic era (KB, Conversations, CRM, CMS, Outreach). The agent is the primary UI: agents act through MCP tools served at /mcp. The dashboard at apps/web is a thin shell over the /v1/* control plane; /v1 controllers and MCP tools must both stay thin wrappers over the same service methods — logic lives in the service, never in a controller or tool handler.
Repository layout
Monorepo on pnpm + Turborepo.
apps/backend— NestJS entry that composes@getmunin/backend-corewith single-tenantAuthModule. Port 3001. Exposes/mcp,/auth/*,/.well-known/oauth-*, and the/v1/*control plane.apps/web— Next.js 15 dashboard + landing. Port 3000. Callsapps/backendvia/v1/*.apps/chat-widget— embeddable browser bundle consumed viamn_widget_*keys.packages/backend-core— shared NestJS modules. Where business logic lives.packages/dashboard-pages— React pages reused by OSS and cloud webs.packages/{core,db,types,sdk,mcp-toolkit,ui}— non-Nest building blocks.packages/{agent-host,agent-runtime}— durable per-org LLM runner that drains the curator queue.packages/widget-voice— Vapi voice glue.
Module map (packages/backend-core/src/modules/)
| Module | Tools prefix | Notes |
|---|---|---|
kb |
kb_* |
Documents, spaces, hybrid search (BM25 + pgvector), curation candidates. |
conv |
conv_* |
Email / SMS / voice / widget channels via the channel-adapter contract (packages/backend-core/src/modules/conv/CLAUDE.md). |
crm |
crm_* |
Contacts, companies, deals, pipelines, segments, merge proposals. |
cms |
cms_* |
Collections, entries, locales, assets, scheduled publishing, public delivery API. |
outreach |
outreach_* |
Propose-only outbound campaigns. Never auto-sends. |
slack |
slack_* |
Operator bridge: mirrors conversations into Slack threads via a WebhookDispatcher sink + slack_deliveries queue. Not a ChannelAdapter. |
connectors |
connectors_* |
Plumbing trunk for customer-facing data connectors: encrypted connection storage, vendor-adapter registry, credential testing. Domain modules register adapters here and own the typed read surfaces; live reads only, no vendor data persisted. |
commerce |
commerce_* |
Connector-backed order lookups (Shopify, Magento 2): admin tools take an email; self-service tools bind to the calling end-user's email server-side. |
bookings |
bookings_* |
Connector-backed bookings (Gastroplanner): read + write (availability, create/modify/cancel). Admin tools take an email; self-service tools bind to the calling end-user and enforce per-booking ownership. |
seo |
seo_* |
Connector-backed search-console reads (Bing Webmaster Tools, Google Search Console) plus URL submission where the engine offers it, and BYOK keyword research (DataForSEO). Admin-only — the one connector domain with no self-service half. |
curator |
— | Background job queue (curator_jobs) running skill://* and task://* URIs. |
web |
— | Website scraper (single task://web/scrape-website). |
playbooks |
— | Cross-module packaged workflows (skill markdown only, no tools). |
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.
- 27d ago Changed · -3 tokens per session d9c233527d0d
- 29d ago Changed · +2 lines · +181 tokens per session 4556206b3ce2
- 1mo ago Changed · +7 lines · +666 tokens per session a795883fd5fc
- 1mo ago Changed · +1 lines · +236 tokens per session 10c756e8c08a
- 1mo ago Changed · +1 lines · +229 tokens per session 8e5dcafa67e8
- 1mo ago First seen · 203 lines · 6,900 tokens per session scan A 18b90092d203
munin CLAUDE.md is an instructions file published in the GitHub repository getmunin/munin (21 stars, last pushed today), licensed MIT. It adds 8,209 tokens to every session, about $0.0328 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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