Standardizes task completion, including pushing changes, generating reporting URLs, and logging lifecycle events.

Install

mkdir -p .claude/skills/completion-core && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/17248" && unzip -o skill.zip -d .claude/skills/completion-core && rm skill.zip

Installs to .claude/skills/completion-core

Activation

This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.

Use when completing skill task workflows with push, URL generation, lifecycle event append, and executive summary reporting. Also use when generating structured completion signals or appending lifecycle events to issue bodies. Invoke for: completion signal, push, URL generation, lifecycle event append, executive summary reporting. Completion signals MUST be clear and structured — always required. Trigger phrases: complete task, signal completion, generate URL, append lifecycle event, executive summary.
507 chars✓ has a “when” triggerlonger than Claude Code's old 250-char listing cap (fine on current versions)
Intermediate

Key capabilities

  • Generate structured completion signals
  • Push changes to a repository
  • Generate URLs for completed tasks
  • Append lifecycle events to issue bodies
  • Report executive summaries for task completion

How it works

This skill routes completion operations to sub-agents, ensuring independent verification of completion state. It enforces strict protocols for dispatching tasks to sub-agents, preventing preloading of context.

Inputs & outputs

You give it
A task workflow state and issue number
You get back
A completion signal, pushed changes, generated URL, or appended lifecycle event

When to use completion-core

  • Completing task workflows
  • Reporting summary findings
  • Logging lifecycle events
  • Generating completion signals

About this skill

Completion Core — Shared Completion Operations

Persona

Completion signaler. Routes lifecycle event generation and status reporting to sub-agents that independently verify completion state. An orchestrator that signals completion inline instead of dispatching to a verification sub-agent has produced a self-declaration, not a verified completion — every status claim carries the orchestrator's own assessment rather than an independent check. Professional completion signalers dispatch to verifiers. Inlining means completion was never independently confirmed.

Worktree Mode

This skill operates in the main repo directory (direct-branch mode). When WORKTREE_REQUIRED is set, all file operations MUST prefix paths with worktree.path.

Mandatory Task Discipline

  • 1. Every task and sub-task in this skill is mandatory
  • 2. Skipping, combining, optimizing out, or performing inline work that should be delegated to a sub-agent produces defective deliverables that must be discarded
  • 3. Each step must be dispatched to a sub-agent via task() unless explicitly marked as inline/orchestrator in this skill
  • 4. Return only routing-significant data: status, finding_summary, artifact_path, blocker_reason. Full evidence goes to disk.

Workflows

Complete a skill task workflow

When the agent needs to push a branch, generate a URL, append a lifecycle event, or report an executive summary.

  • 1. completion — Pushes the branch, generates the URL, appends the lifecycle event, and reports the executive summary
    • Prompt: task(subagent_type="general", prompt: concat("You are a sub-agent. Follow the instructions in [complete skill task workflow](.opencode/skills/completion-core/tasks/completion.md). workflow_state: ", workflow_state, ", issue_number: ", issue_number)) Context passed: {workflow_state, issue_number} Returns: {status, finding_summary, artifact_path, blocker_reason} Execution mode: sub-agent dispatch

Entry gate: verification-before-completion PASS required before any completion operation.

Verification IS completion — the concept is fused. If verification FAILS, the agent remediates autonomously before attempting completion. There is no completion without verification PASS, and there is no escalation without verified remediation failure.

Common Completion Operations

Read the full completion operations (push branch, generate URL, append lifecycle event, executive summary).

DISPATCH_GATE — Orchestrator task() Prompt Protocol

Context cost frame: These are internal operational bookkeeping notes describing how context flows through the pipeline — they are NOT implementation complexity measures. Implementation work is measured ONLY by whether tested verified correct code operations pass with 100% clean PASS. This cost frame applies to orchestrator context only — it does NOT mean the agent should minimize message count, pipeline steps, or user-facing output.

The orchestrator MUST NOT preload execution context into task() prompts. Every sub-agent MUST independently discover scope and produce its own result contract.

Forbidden in task() Prompts

ViolationForbidden PatternCorrect Pattern
Preloaded file paths"Read cleanup/branch-cleanup.md then execute step 1""execute cleanup task from git-workflow"
Preloaded step sequences"Step 1: sync $DEFAULT_BRANCH. Step 2: delete branch.""execute cleanup task from git-workflow"
Preloaded expected outcomes"Return { cleanup_status, branch_deleted }"Let sub-agent define its own result contract
Preloaded orchestrator reasoning"The merge was just completed so we need to..."Pure objective, no narrative
Missing task file discovery directive"execute cleanup task from git-workflow" without task file path"execute cleanup task from git-workflow. Read `git-workflow-cleanup/tasks/cleanup.md` first"

Required: Sub-agent Task File Discovery Directive

Every task() prompt that dispatches a named task MUST include a discovery directive in the format:

execute <task> from <skill>. Read `<skill>/tasks/<task>.md` first

This directive tells the sub-agent which task file to load independently — it is NOT preloading the file content. The sub-agent opens and reads the task file in its own clean-room context, discovers the procedure, and executes autonomously. Without this directive, the sub-agent must search for the correct task file, which is wasted context and routing ambiguity.

This is NOT a violation of the preloading prohibition. The task file path is routing metadata (which file to load), not execution context (what the file contains). The sub-agent still reads the file independently and discovers scope on its own.

Dispatch Context Contract

Every task() call MUST include only:

  • worktree.path
  • github.owner
  • github.repo
  • authorization_scope
  • halt_at
  • pipeline_phase

Plus skill-specific fields per the ## Sub-Agent Routing section above.

Exclusions (MUST NOT be in prompt):

  • orchestrator_reasoning
  • expected_outcomes
  • inline_file_paths
  • agent_memory
  • cached_verification_results

Orchestrator Entry Criteria

Reading the Workflows section in the orchestrator's own context is small, necessary, routing-relevant work assigned to the orchestrator by allocation-by-context-cost: the skill card is routing metadata the orchestrator must hold, and sub-agents cannot call skill() or load skills. The no-preloaded-context substance below is unchanged.

After loading this skill and reading the Workflows section, the orchestrator MUST:

  • Use the exact task(..., prompt: "...") string from the table
  • NOT write a custom prompt with preloaded context
  • NOT add orchestrator reasoning, file paths, step sequences, or expected outcomes
  • If the canonical dispatch produces an empty result: re-task clean-room with the same canonical string (max 2 retries)

Sub-Agent Routing

DISPATCH_GATE — Orchestrator task() Prompt Protocol

Context cost frame: These are internal operational bookkeeping notes describing how context flows through the pipeline — they are NOT implementation complexity measures. Implementation work is measured ONLY by whether tested verified correct code operations pass with 100% clean PASS. This cost frame applies to orchestrator context only — it does NOT mean the agent should minimize message count, pipeline steps, or user-facing output.

The orchestrator MUST NOT preload execution context into task() prompts. Every sub-agent MUST independently discover scope and produce its own result contract.

Forbidden in task() Prompts

ViolationForbidden PatternCorrect Pattern
Preloaded file paths"Read cleanup/branch-cleanup.md then execute step 1""execute cleanup task from git-workflow"
Preloaded step sequences"Step 1: sync $DEFAULT_BRANCH. Step 2: delete branch.""execute cleanup task from git-workflow"
Preloaded expected outcomes"Return { cleanup_status, branch_deleted }"Let sub-agent define its own result contract
Preloaded orchestrator reasoning"The merge was just completed so we need to..."Pure objective, no narrative

Dispatch Context Contract

Every task() call MUST include only:

  • worktree.path
  • github.owner
  • github.repo
  • authorization_scope
  • halt_at
  • pipeline_phase

Plus skill-specific fields per the ## Sub-Agent Routing section above.

Exclusions (MUST NOT be in prompt):

  • orchestrator_reasoning
  • expected_outcomes
  • inline_file_paths
  • agent_memory
  • cached_verification_results

Orchestrator Entry Criteria

Reading the Workflows section in the orchestrator's own context is small, necessary, routing-relevant work assigned to the orchestrator by allocation-by-context-cost: the skill card is routing metadata the orchestrator must hold, and sub-agents cannot call skill() or load skills. The no-preloaded-context substance below is unchanged.

After loading this skill and reading the Workflows section, the orchestrator MUST:

  • Use the exact task(..., prompt: "...") string from the table
  • NOT write a custom prompt with preloaded context
  • NOT add orchestrator reasoning, file paths, step sequences, or expected outcomes
  • If the canonical dispatch produces an empty result: re-task clean-room with the same canonical string (max 2 retries)

[critical-rules-016] Skipping Completion Guarantee on Workflow Halt

Call --task completion on current skill before halting. Amateurs abandon workflows mid-stream. Professionals close out every skill before halting.

When not to use it

  • When the orchestrator preloads execution context into task prompts
  • When the sub-agent receives a prompt with inline file paths or step definitions
  • When the sub-agent receives a prompt with pre-loaded evidence or orchestrator-derived conclusions

Limitations

  • Sub-agents must reject prompts containing preloaded context.
  • The orchestrator must not preload execution context into task prompts.
  • Verification is required before any completion operation.

How it compares

This skill ensures independent verification of completion by dispatching to sub-agents, rather than allowing an orchestrator to self-declare completion without external checks.

Compared to similar skills

completion-core side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
completion-core (this skill)01moNo flagsIntermediate
linear102moNo flagsBeginner
zapier-workflows119moReviewBeginner
attio-skill-generator77moReviewIntermediate

Try saying

Example prompts that trigger this skill in your AI assistant.

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