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kernl: Command for Claude Code

.claude/commands/arch.md

arch is a command for Claude Code from fastslack/kernl. It costs 13 tokens per session (618 once invoked), scanned A, original, Apache-2.0.

A command that reads a Kernl project’s code and maps its architecture, including modules, tools, HTTP routes, and notifications.

In plain words
What is it for?
Use it to list registered modules, database tables, Neo4j use, MCP tools, API endpoints, or notification channels.
Why use it?
It gives you a current view of how the project is organized without relying on outdated documentation.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is fastslack/kernl's own configuration. It tells Claude Code how to work on kernl 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 kernl configures →

not rated 3repo yesterday A scan 13 tokens original Apache-2.0
View source ↗ fastslack/kernl lifekernl.com
Reuse

Borrowing it

Nothing to install: this file belongs to fastslack/kernl. 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/fastslack/kernl/stable/.claude/commands/arch.md
Clone the repo
git clone --depth 1 https://github.com/fastslack/kernl

Made for: Claude Code.

Wrote 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.

agentmods badge for arch

README.md
[![agentmods](https://agentmods.dev/badge/commands/fastslack/kernl/arch/github.svg)](https://agentmods.dev/commands/fastslack/kernl/arch)
Your own site
<a href="https://agentmods.dev/commands/fastslack/kernl/arch"><img src="https://agentmods.dev/badge/commands/fastslack/kernl/arch/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.

agentmods 80×15 button for arch

Your own site · 80×15
<a href="https://agentmods.dev/commands/fastslack/kernl/arch"><img src="https://agentmods.dev/badge/commands/fastslack/kernl/arch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 618 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00013 $0.00618
Opus 5.5 $0.00005 $0.00247
Sonnet 5.5 $0.00003 $0.00124
Haiku 4.5 $0.00001 $0.00062

Measured 2mo ago against content hash bfde7f6ab710, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

arch 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 2mo 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/commands/arch.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architecture Discovery: $ARGUMENTS

Dynamically discover the Kernl project structure by reading the actual code.

Scope: modules (or all)

Discover all registered modules and their capabilities:

  1. Read services/kernel/src/index.ts — find all createXxxModule() imports to get the module list and registration order
  2. For each module, check:
    • Has migrations? (tables)
    • Has Neo4j usage? (grep for neo4j in service files)
    • Tool count: grep for tool definitions in tools.ts
  3. Present as a table: | Module | Tables | Neo4j | Tools count | Description |

Scope: tools (or all)

List all MCP tools:

  1. Grep for name: "kernel_ across services/kernel/src/modules/*/tools.ts files
  2. Group by module
  3. Present as: | Module | Tools |

Scope: routes (or all)

Discover HTTP API routes:

  1. Grep for route patterns (GET, POST, PUT, DELETE + /api/) in:
    • services/kernel/src/modules/dashboard/api-routes.ts
    • services/kernel/src/modules/*/api-routes.ts
    • services/kernel/src/core/http-server.ts
  2. Present as: | Method | Endpoint | File |

Scope: notifications (or all)

Discover the notification/channel system:

  1. Read services/kernel/src/core/notification-provider.ts for the interface
  2. Glob services/kernel/src/core/providers/*.ts for all provider implementations
  3. Grep for registerFactory in services/kernel/src/index.ts to see registered factories
  4. Present: | Provider | ID | Capabilities | Config Fields |

Scope: events (or all)

Discover EventBus events:

  1. Grep for events.emit( across all source files
  2. Grep for events.on( in services/kernel/src/core/event-listeners.ts
  3. Present: | Event | Emitted by | Listener action |

Scope: neo4j (or all)

Discover Neo4j schema:

  1. Grep for CREATE.*INDEX and node/relationship patterns in graph-intel and chat modules
  2. Read services/kernel/src/modules/graph-intel/enrichment.ts for relationship creation
  3. Read services/kernel/src/modules/graph-intel/analytics.ts for GDS algorithms
  4. Present nodes, relationships, and vector indexes

Read the full file on GitHub · 72 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. 2mo ago First seen · 72 lines · 13 tokens per session scan A bfde7f6ab710

Subscribe to this mod's changes

arch is a command published in the GitHub repository fastslack/kernl (3 stars, last pushed yesterday), licensed Apache-2.0. It adds 13 tokens to every session and 618 once invoked, about $0.0001 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.

LLMPlanningai-agentsmcpmodel-context-protocolneo4jprivacy
Related

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arch next to 6 commands from other repositories
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