Capture

/archcore:capture

Document a module, component, or topic. You describe what needs documenting — the system picks the right document type.

When to use

• "Document the auth module"
• "Capture how the payment system works"
• "Write down the API contract"
• "Create reference docs for the config system"

Not capture:

• Recording a specific decision → /archcore:decide
• Planning a feature → /archcore:plan
• Making something a standard → /archcore:decide
• Reading applicable rules/ADRs/specs before coding → /archcore:context
• Picking up where work left off → /archcore:context

Routing table

Given $ARGUMENTS and conversation context, classify what the user needs:

Default: if still unclear after one question, create an adr (the most common documentation need) — unless others rely on the subject's behavior, in which case create a spec.

Execution

Step 1: Check existing

mcp__archcore__list_documents — scan for existing documents on this topic. Prevent duplicates.

If a match is a global document (global: true / read_only: true / source_kind: "global"), load skills/_shared/globals.md: it is read-only org-wide context, not editable here. Create the local document (a refinement/override) and do not modify it or call add_relation referencing the global. Absent any global match, proceed as usual.

Step 2: Route

Apply the routing table above. If $ARGUMENTS clearly signals a type, proceed. If ambiguous, use AskUserQuestion to ask: "Is this primarily a decision, a contract/behavior spec, reference material, or instructions?"

Step 3: Create documents

For each document determined by routing:

If ADR:

• Ask: "What was the decision? What alternatives were considered?"
• Compose content covering Context, Decision, Alternatives Considered, Consequences.
• mcp__archcore__create_document(type="adr")

If spec:

• Read skills/_shared/precision-rules.md and skills/_shared/spec-contract.md once before composing — the contract defines what a spec is (behavior others rely on right now), the routing gate against prd, and the notation.
• Ask: "Who depends on this, and what is its surface — the interface, or the parts/states/fields that drive behavior? What are the key constraints, invariants, and failure behaviors?"
• Compose the six sections defined in spec-contract.md: Purpose & Scope, Surface, Normative Behavior (EARS clauses + BCP 14 keywords), Constraints & Invariants, Failure Behavior, Conformance.
• mcp__archcore__create_document(type="spec")

If doc:

• Ask: "What information should this reference contain?"
• Compose content covering Overview, Content (structured sections/tables), Examples.
• mcp__archcore__create_document(type="doc")

If guide:

• Ask: "What task does this guide walk through? What prerequisites exist?"
• Compose content covering Prerequisites, Steps (numbered), Verification, Common Issues.
• mcp__archcore__create_document(type="guide")

Step 4: Relate

After each document, call mcp__archcore__add_relation to link to existing related documents. If multiple documents were created, link them with related.

Result

One or more documents created and linked. Report: which documents, their paths, relations added, and suggested next actions (e.g., "consider adding a rule to codify this decision").

Source: hashgraph-online/awesome-codex-plugins → plugins/archcore-ai/plugin/skills/capture/SKILL.md