
Tool access
Choose the boundary before the connector.
Direct APIs belong in product integration. MCP belongs in an agent workspace where tools and data need a human approval path.
A Sirrius Office publication
Sirrius Atlas
A searchable, documentation-checked reference for Claude Code commands, skills, MCP, memory, agent workflows, and practical operating patterns.
Search the Atlas, open the command you need, and copy its syntax with the context, cautions, and source status still visible.
An independent Sirrius Atlas field guide published by Sirrius Office Inc. Not affiliated with or endorsed by Anthropic.

Prompt → plan → change → verify
Begin with a route
The working catalogue
Search across the verified reference or choose a route. Every entry pairs a command surface with a practical reason to use it.
72 entries in view
Select Compare on one entry, then on another. We’ll take you to a side-by-side explanation of their syntax, purpose, evidence, provenance, and cautions.
Cross-reference desk
0/2 commands marked for comparison
Use the Compare control on any catalogue entry. The desk keeps the command, evidence, provenance, and operating note side by side.
Use the Compare control on any catalogue entry. The desk keeps the command, evidence, provenance, and operating note side by side.
Free resource · no engagement gate
Get Claude Code commands, skills, MCP, memory, agent workflows, and practical operating patterns—free to browse and download.
No like, follow, or random keyword beneath a Short required. Your comment history can remain reserved for things you actually wanted to say.
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Field notes · inspected patterns
The most useful ideas found through secondary web research are not hidden commands. They are repeatable habits: make the task legible, isolate independent work, keep secrets local, and verify before you trust the output.


Method plate · reviewable sequence
A working sequence for tasks that deserve more than a single prompt: inspect the input, define the boundary, then review the evidence.
Audience, constraints, output, acceptance criteria.
Use /plan, inspect the repository, decide the test path.
Use skills, subagents, or worktrees only where the work is independent.
Run /diff, /code-review, /verify, then record durable context.

The publisher also builds
If your work still depends on copying, chasing, retyping, or stitching information together by hand, Sirrius Office can turn it into a scoped app or automation—with a fixed price before development begins.
Apps, automation, simple pricing.
You will receive a real, fixed price before work begins. You own the code and accounts, with no vendor lock-in.
Describe your project Opens sirrius.net · replies within one business daySource record · method
Publicly available secondary web material is used to discover practical ideas from a changing range of sources. Items are deduplicated and checked against current official Claude Code documentation. Secondary-only, ambiguous, or version-sensitive claims remain clearly labelled as patterns or watchlist notes rather than being promoted to product facts.
Claude Code Atlas · questions answered
The collection, its evidence labels, comparison tool, update cycle, and independent status.
Claude Code Atlas is the flagship Sirrius Atlas field guide: a searchable reference for Claude Code commands, skills, MCP, memory, agent workflows, and practical operating patterns.
It means a practical idea was discovered in publicly available secondary web material and independently corroborated against current official Anthropic Claude Code documentation. It does not imply endorsement by a creator or by Anthropic.
The collection is reviewed against current official documentation through a monthly human-review report. Commands and product behaviour can still change between reviews, so consequential actions should be verified against your installed Claude Code version.
Choose Compare on one catalogue entry and then on another. Claude Code Atlas opens a side-by-side view of their syntax, purpose, evidence, provenance, and cautions. The resulting public link contains only the two entry identifiers.
Yes. The complete collection can be downloaded as a Markdown file for offline reference after you provide an email address and explicitly request field-guide updates. Sirrius Office service emails remain a separate, optional choice.
No. Claude Code Atlas is an independent Sirrius Atlas field guide published by Sirrius Office Inc. It is not affiliated with or endorsed by Anthropic, and official Anthropic documentation remains the source of truth for product facts.