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name: wiki-yylo description: Use YYLO Ledger wiki Records as durable project knowledge. Search before creating, classify information correctly, and make revision-safe Markdown updates without editing Ledger storage directly. category: project-management risk: safe source: https://github.com/yylo-dev/yylo-skills source_repo: yylo-dev/yylo-skills source_type: community date_added: '2026-09-19' license: MIT license_source: https://github.com/yylo-dev/yylo-skills/blob/main/LICENSE compatibility: Requires the yy CLI with the wiki record group installed (controller or standalone). Revision-safe Markdown updates only; never edit Ledger storage directly. argument-hint: '[wiki question or knowledge to find/create/update]' enable-shell-directives: true

Use YYLO wiki Records

Treat Ledger as the source of truth. Use yy ledger in a YYLO controller and yylo-ledger in a standalone Ledger project. Inspect COMMAND wiki --help before acting; if wiki is absent, the installed Ledger version does not expose native Record commands and must not be bypassed with direct file edits.

Choose the right record

Before writing, decide where the information belongs:

• Wiki: durable explanatory project or domain knowledge that future work must discover.
• Task: scoped requested work, status, dependencies, acceptance criteria, and completion evidence.
• Workflow: validated structured steps, not prose guidance.
• Artifact: generated evidence, reports, receipts, logs, model output, or binary payloads.
• Source documentation: documentation released and versioned with product code.

Do not put secrets, caches, session transcripts, temporary status, bulky generated evidence, or owner-only operational receipts in a wiki.

Discover before creating

Use bounded summary searches first. Resolve records by immutable ID whenever one is known; slugs and aliases are discovery conveniences, not replacement identity.

yy ledger wiki search --text "deployment policy" --projection summary --limit 20 -f json
yy ledger wiki get RECORD_ID -f json
yy ledger wiki get RECORD_ID --raw

Use --scope archive|all only when the request requires cold records. Request full projection only when payload bytes are necessary.

Create durable Markdown

Use a file or stdin for substantial or shell-sensitive content:

yy ledger wiki create --title "Service ownership" --file ownership.md
yy ledger wiki create --title "Incident notes" --file - < incident-notes.md

Choose a stable title, namespace, slug, aliases, and relations deliberately. Keep one topic per Record and link related immutable Record IDs rather than duplicating truth.

Update safely

1. Read the current Record and revision.
2. Preserve its immutable ID and inspect history when intent is unclear.
3. Follow wiki update --help for the installed compare-and-replace controls.
4. Supply the expected revision and required preimage/digest evidence.
5. Use file transport; do not rewrite Ledger files yourself.
6. Read back the resulting revision and receipt.

A revision or preimage mismatch means the source changed: reread and reconcile. Never force past concurrent edits. Archive is a lifecycle transition, not delete.

Use --front-matter only for canonical front-matter interchange and --rendered for inert, HTML-escaped rendering. Use history RECORD_ID to understand revisions; do not infer history from the latest payload alone.

Project wiki boundary

Portable controller guidance may live under the controller wiki, while project and domain pages retain project-owned paths. Package-managed and project-owned pages can coexist. Migration, runtime replacement, exceptional merge recovery, release, deployment, and cold-archive maintenance remain authoritative runbooks, not content to summarize into an everyday global skill.

Complete request

$ARGUMENTS

When to Use

• You need durable project or domain knowledge as YYLO Ledger wiki Records (search, create, revision-safe update).
• You must first decide the record belongs in the wiki rather than a task, workflow, artifact, or product docs.

Limitations

• Search before creating; one topic per Record, linked by immutable Record IDs.
• Never store secrets, caches, session transcripts, temporary status, bulky generated evidence, or owner-only receipts in a wiki.
• Updates bind to the expected revision/preimage; on mismatch reread and reconcile - never force past concurrent edits. Archive is a lifecycle transition, not deletion.
• If the wiki group is absent, fail closed and request a Ledger upgrade.

Example

yy ledger wiki search --text "deployment policy" --projection summary --limit 20 -f json
yy ledger wiki get RECORD_ID -f json

Adapted from yylo-dev/yylo-skills (MIT) - v2.0.1; frontmatter, When to Use/Limitations, and safety boundaries added for upstream compliance.