---

name: workflow-yylo description: Create and maintain validated YYLO Ledger workflow Records while keeping storage, execution, and run evidence as separate explicit boundaries. 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 workflow record group installed. Ledger stores and validates workflow data; execution needs a separately selected runner plus explicit authority. argument-hint: '[workflow to find/create/update or execution question]' enable-shell-directives: true

Use YYLO workflow Records

Treat Ledger as the source of truth for workflow identity, validated definition, and revision history. Use yy ledger in a YYLO controller or yylo-ledger standalone. Inspect COMMAND workflow --help; if the namespace is absent, do not invent it or edit Ledger storage directly.

Keep three boundaries distinct

1. Ledger stores and validates workflow data. It does not execute workflows.
2. A separately selected YYLO runner executes reviewed workflow data. Storage does not grant execution, network, mutation, release, or deployment authority.
3. Artifact Records retain run evidence. Do not overwrite the workflow definition with stdout, logs, model output, reports, or receipts.

The read-only Ledger host also has no workflow execution endpoint.

Discover and inspect

yy ledger workflow search --text "release verification" --projection summary --limit 20 -f json
yy ledger workflow get RECORD_ID -f json
yy ledger workflow get RECORD_ID --raw
yy ledger workflow get RECORD_ID --validated

Prefer immutable IDs after discovery. Use bounded projections and explicit archive scope. --validated emits normalized YAML only after schema validation.

Author safe workflow data

A workflow v1 document requires a mapping with schema_version: v1, a non-empty workflow_id, and a steps list whose step IDs are non-empty and unique.

schema_version: v1
workflow_id: focused-validation
steps:
  - id: test
    command: ["npm", "test"]

Create through file/stdin transport:

yy ledger workflow create --title "Focused validation" --file workflow.yaml

Ledger rejects unsafe or non-portable YAML, including duplicate keys, aliases, anchors, explicit tags, recursive structures, non-string mapping keys, implicit date/time values, non-finite numbers, CRLF input, and unsupported values. Never weaken validation by storing executable shell as an unvalidated substitute.

Revise safely

Read the current revision and history, then follow the installed workflow update --help compare-and-replace contract. Bind updates to the expected revision and preimage/digests, validate the result, and read it back. On drift, stop and reconcile instead of forcing. Archive is non-destructive.

Before execution, freeze the exact workflow Record ID, revision, payload digest, runner identity, inputs, and granted authorities. After execution, store bounded outputs under artifact-yylo with workflow/run provenance. An execution request never implies merge, release, publication, deployment, or production authority.

Complete request

$ARGUMENTS

When to Use

• You need to find, create, or revision-safe update validated YYLO Ledger workflow Records.
• You must keep storage, execution, and run-evidence boundaries explicit.

Limitations

• Ledger stores and validates workflow data; it never executes workflows and grants no execution, network, mutation, release, or deployment authority.
• Run evidence belongs in artifact-yylo records with workflow/run provenance - never overwrite the workflow definition with outputs.
• An execution request never implies merge, release, publication, deployment, or production authority. On revision drift, stop and reconcile instead of forcing.

Example

yy ledger workflow search --text "release verification" --projection summary --limit 20 -f json
yy ledger workflow get RECORD_ID --validated

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