Validates a single named gate for a spec document and appends the result to the Evidence Log. Invoked as a subagent by backlog-pipeline. Does exactly one thing — check one gate and record the outcome.

Use when executing backlog-driven work, multi-PR initiatives, recommendation-gated implementation, or one-backlog-per-PR workflows. Orchestrates owner skills without duplicating their detailed procedures.

Manages concurrent async operations with execution limits, cancellation propagation, and backpressure in TypeScript. Use when running parallel tasks, coordinating multiple agents, or handling streaming responses with rate limits.

Applies Robota's architecture patterns — functional core/imperative shell, ports-and-adapters, and DI-based composition. Use when designing module boundaries, separating domain from infrastructure, or improving testability.

Records architectural decisions with context, alternatives, and consequences using the ADR format. Use when making or reviewing significant design choices that affect multiple modules or packages.

Manage API specifications for apps with external HTTP, WebSocket, gRPC, or other API endpoints, including endpoint additions, request or response shape changes, OpenAPI documentation, and schema synchronization.

Defines the standard error response format for HTTP APIs based on RFC 7807 Problem Details. Use when implementing or reviewing API error responses.

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Convert approved specification/phase/epic scope vBRIEFs into swarm-ready story vBRIEFs before concurrent agent allocation.

Triage-cache hygiene and "what's next?" queue selection -- the agent-facing playbook for syncing the triage cache, classifying candidates, presenting a ranked queue, walking per-item decisions, and auditing the session.

Session-start framework sync skill. Pulls latest deft submodule, validates vBRIEF lifecycle structure, checks folder/status consistency, detects stale origins (RFC D12), and summarizes changes.

Parallel local agent orchestration. Use when running multiple agents on vBRIEF stories simultaneously — to scan active/ for allocatable work, set up isolated worktrees, launch agents with proven prompts, monitor progress, handle stalled review cycles, and close out PRs cleanly.

Set up a new project with Deft Directive framework standards. Use when the user wants to bootstrap user preferences, configure a project, or generate a project specification. Walks through setup conversationally — no separate CLI needed.

Greptile bot reviewer response workflow. Use when running a review cycle on a PR -- to audit process prerequisites, fetch bot findings, fix all issues in a single batch commit, and exit cleanly when no P0 or P1 issues remain. Enables cloud agents to run autonomous PR review cycles.

Cut a v0.X.Y release of the deft framework safely. Use when the user says "release", "cut release", "v0.X.Y", or "publish release" -- to walk an 8-phase workflow that pre-flights, runs an end-to-end rehearsal against a temp repo, lands a draft on the real repo, gates on user review, then publishes or rolls back. Re-uses the deft-directive-swarm Phase 6 Step 5 Slack announcement template.

Conversational refinement session. Ingests external work items into vBRIEF proposed/ scope, deduplicates via origin references, evaluates proposals with the user, reconciles stale origins, and promotes/demotes scopes through the lifecycle using deterministic task commands.

Iterative pre-PR quality improvement loop. Use before pushing a branch for PR creation -- after completing implementation but before task check. Cycles through Read-Write-Lint-Diff until a full pass produces zero changes.

Deterministic structured Q&A interview loop. Use when any skill needs structured user input through focused questions with defaults and confirmation gate. Interview output targets vBRIEF narratives.

Extract a DDD-style ubiquitous language glossary from the current conversation, flagging ambiguities and proposing canonical terms. Saves to UBIQUITOUS_LANGUAGE.md. Use when defining domain terms, building a glossary, hardening terminology, or when "domain model" or "DDD" is mentioned.

Break a SPECIFICATION.md, PRD, or plan into independently-grabbable GitHub Issues using tracer-bullet vertical slices. Use after spec generation, when the user wants to create implementation tickets, or when breaking work into parallel-assignable issues. Requires the GitHub CLI (gh).

Explore a codebase for architectural improvement opportunities -- deepen shallow modules, generate competing interface designs in parallel via sub-agents, and file a refactor RFC as a GitHub Issue. Use when improving architecture, finding refactoring opportunities, or making a codebase more testable and AI-navigable. Requires the GitHub CLI (gh).

Pre-build cost & budget transparency phase. Use after the project SPECIFICATION is approved and before the build skill kicks off, to produce a plain-English COST-ESTIMATE.md the user can read, react to, and explicitly accept, rescope, no-build, or skip with a recorded reason. Audience is non-technical users; voice is dollars and whole-number bands, not spreadsheets.

Build a project from scope vBRIEFs following Deft Directive framework standards. Use after deft-directive-setup has generated the project definition, or when the user has story vBRIEFs in vbrief/active/ ready to implement. Handles scaffolding, implementation, testing, and quality checks phase by phase.