HAR: Execute Plans.md tasks from single task to full parallel team run. Trigger: implement, execute, do everything, breezing, team run, parallel. Do NOT load for: planning, review, release, setup.
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HAR: Execute Plans.md tasks from single task to full parallel team run. Trigger: implement, execute, do everything, breezing, team run, parallel. Do NOT load for: planning, review, release, setup.
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HAR: Execute Plans.md tasks from single task to full parallel team run. Trigger: implement, execute, do everything, breezing, team run, parallel. Do NOT load for: planning, review, release, setup.
Task/subagent routing via .cursor/AGENTS.md; not auto-selected
/harness-work --breezing
breezing
Force team execution
/harness-work 3 --plan roadmap
solo
Execute task 3 from named plan roadmap
Execution Mode Auto Selection (when no explicit flag)
When no explicit mode flag (--parallel, --breezing, --codex) is given,
the optimal mode is auto-selected based on the number of target tasks:
Target tasks
Auto-selected mode
Reason
1
Solo
Minimal overhead; direct implementation is fastest
2-3
Parallel (Task tool)
Threshold where Worker isolation benefit starts to appear
4+
Breezing
Lead coordination + parallel Workers + independent Reviewer separation is effective
Rules
Explicit flags always override auto mode
--parallel N → Parallel mode (regardless of task count)
--breezing → Breezing mode (regardless of task count)
--codex → Codex mode (regardless of task count)
--codex activates only when explicit. Not auto-selected because Codex CLI may not be installed.
--codex can be combined with other modes: --codex --breezing → Codex + Breezing
Options
Option
Description
Default
all
Target all incomplete tasks
—
N or N-M
Task number/range
—
--parallel N
Number of parallel workers
auto
--sequential
Force sequential execution
—
--codex
Delegate implementation to Codex CLI (explicit only; not auto-selected)
false
--plan NAME
Use named plan from plans/manifest.json
active/default
--no-commit
Suppress auto-commit
false
--resume <id|latest>
Resume previous session; use /recap together if a long time has passed
—
--breezing
Team execution with Lead/Worker/Reviewer
false
--no-tdd
Skip TDD phase
false
--tdd-bypass
Bypass TDD enforcement in emergencies. Leave HARNESS_TDD_BYPASS_REASON or explicit reason in audit
false
--no-simplify
Skip Auto-Refinement
false
--auto-mode
Explicitly marks Harness-side Auto Mode rollout; different from --enable-auto-mode that became unnecessary in CC 2.1.111
false
Progressive Disclosure
Check only the entry point, auto-selection, and stop conditions in this body first.
Read details only when needed.
Details
Reference
Concrete procedures for Solo / Parallel / Codex / Breezing
references/execution-modes.md
Codex review, Reviewer fallback, AI Residuals, fix loop
references/review-loop.md
Solo / Breezing completion report generation
references/completion-report.md
Test/CI failure re-ticketing
references/failure-reticketing.md
Spec source of truth check criteria
docs/plans/spec-ssot.md
Critical stop conditions
Stop when Plans.md is in old format and DoD / Depends / Status cannot be read.
When spec affects implementation decisions but project spec SSOT is not found, create/update spec before implementing.
Do not proceed to implementation when sprint-contract is required but not ready.
Do not mark complete when critical/major review findings remain.
Do not resolve by weakening tests, skipping, or relaxing expected values to match implementation.
Call helper scripts from ${HARNESS_PLUGIN_ROOT}/scripts/, not from the host project's scripts/.
When multiple Plans.md exist, do not switch plans within one run. Use --plan NAME and start a new run if needed.
Token Optimization (v2.1.69+): For lightweight tasks without git operations,
enable includeGitInstructions: false in plugin settings to reduce prompt tokens.
Prompt Cache (CC 2.1.108+): For longer implementations or work using --resume frequently,
prioritize ENABLE_PROMPT_CACHING_1H=1.
Scope Dialog (no arguments)
/harness-work
How far should I go?
1) Next task: next incomplete task in Plans.md → Execute in Solo
2) All (recommended): complete all remaining tasks → Auto mode selection by task count
3) Specify number: enter task number (e.g., 3, 5-7) → Auto mode selection by count
When arguments are provided, execute immediately (skip dialog):
/harness-work all → all tasks, auto mode selection
Effort Level Control (v2.1.68+, v2.1.72, v2.1.111)
In Claude Code v2.1.68, Opus 4.6 defaults to medium effort (◐).
In v2.1.72, max level was deprecated, simplified to 3 levels low(○)/medium(◐)/high(●).
Reset to default with /effort auto.
Enable high effort (●) for complex tasks with the ultrathink keyword.
xhigh was added in CC 2.1.111 for Opus 4.7.
You may stack /effort xhigh as a literal if needed.
Multi-factor scoring
At task start, sum the following scores and inject ultrathink when threshold ≥ 3:
When score ≥ 3, prepend ultrathink to the Worker spawn prompt.
The same logic applies in breezing mode (managed centrally by harness-work).
Execution modes
Harness helper script root
Harness bundled helper scripts must always be called from the plugin bundle root, not from the target project's scripts/:
HARNESS_PLUGIN_ROOT="${CLAUDE_PLUGIN_ROOT:-}"
if [ -z "$HARNESS_PLUGIN_ROOT" ] && [ -n "${CLAUDE_SKILL_DIR:-}" ]; then
HARNESS_PLUGIN_ROOT="$(cd "${CLAUDE_SKILL_DIR}/../.." && pwd)"
fi
All subsequent node "${HARNESS_PLUGIN_ROOT}/scripts/..." / bash "${HARNESS_PLUGIN_ROOT}/scripts/..." assume this resolved root.
Solo mode (auto-selected for 1 task)
Load Plans.md and identify the target task
When Plans.md does not exist: Auto-call harness-plan create --ci → generate Plans.md and continue
When header lacks DoD / Depends columns: Plans.md is in old format. Please regenerate with harness-plan create. → Stop
When there are undocumented tasks in conversation: Extract requirements from the previous conversation context and auto-append to Plans.md as cc:TODO
Extraction logic: Detect action verbs from user statements ("add ~", "fix ~", "implement ~")
Append in v2 format (Task / Content / DoD / Depends / Status)
After appending, show "Appended the following to Plans.md" to user (5-second timeout prompt, default: continue)
1.5. Task background check (30 seconds):
Infer and display the purpose (the problem this task solves) in 1 line from the task "Content" and "DoD"
Infer and display impact scope (files/modules affected by changes) with git grep / Glob
When confident in inference: proceed to implementation without delay
When not confident: ask user one question only ("Is this understanding correct?")
1.6. Spec source of truth preflight:
When task changes product behavior / API / data model / permission / billing / integration / tenant boundary, create docs/spec/00-project-spec.md if none exists
When spec is outdated or conflicts with task, update spec before implementing
Skip with recorded reason for typo / format / dependency bump / docs-only / behavior-preserving refactor
Include spec_path or spec_skip_reason in context passed to Worker / Reviewer
Update task to cc:WIP
TDD phase (no [skip:tdd] and test framework exists):
a. Create test file first (Red)
b. Confirm failure
c. Leave FAIL evidence in .claude/state/tdd-red-log/<task-id>.jsonl with bash "${HARNESS_PLUGIN_ROOT}/scripts/log-tdd-red.sh". In environments where the script is unavailable, attach literal failing test output to self_review evidence in worker-report
d. When using --tdd-bypass, explicitly set HARNESS_TDD_BYPASS=1 and HARNESS_TDD_BYPASS_REASON="<reason>", and leave the reason for skipping TDD in sprint-contract / worker-report
Generate sprint-contract.json with node "${HARNESS_PLUGIN_ROOT}/scripts/generate-sprint-contract.js" <task-id>
Add Reviewer perspective with bash "${HARNESS_PLUGIN_ROOT}/scripts/enrich-sprint-contract.sh" and confirm approved with bash "${HARNESS_PLUGIN_ROOT}/scripts/ensure-sprint-contract-ready.sh"
Advisor consultation (only when needed):
For high-risk tasks (needs-spike / security-sensitive / state-migration), consult once before first execution
When the same root cause failure occurs twice, consult before the 3rd attempt
When plateau detection returns PIVOT_REQUIRED, consult once before stopping and escalating to user
Receive consultation result as advisor-response.v1: PLAN = restructure approach, CORRECTION = local fix, STOP = immediate escalation
Consult only once per the same trigger_hash. Maximum 3 consultations per task
Implement code (Green) (Read/Write/Edit/Bash)
Auto-Refinement with /simplify (skippable with --no-simplify)
Automated review stage (see "Review Loop"):
Run review prioritizing Codex exec → fallback to internal Reviewer agent
When sprint-contract.json has reviewer_profile: runtime, run bash "${HARNESS_PLUGIN_ROOT}/scripts/run-contract-review-checks.sh"
On REQUEST_CHANGES: fix per findings → re-review (MAX_REVIEWS = read_contract(contract_path, ".review.max_iterations") or 3)
Proceed on APPROVE; do not finalize on self-check alone
Normalize and save review artifact with bash "${HARNESS_PLUGIN_ROOT}/scripts/write-review-result.sh" (pass --browser-result for browser profile; adopt static verdict when browser_verdict == PENDING_BROWSER)
Auto-commit with git commit (skippable with --no-commit)
Update task to cc:done (with commit hash)
Get recent commit hash (7-char short form) with git log --oneline -1
Update Plans.md Status to cc:done [a1b2c3d] format
When no commit (--no-commit): cc:done without hash
Rich completion report (see "Completion Report Format")
Automatic re-planning on failure (only when test/CI fails):
Check test execution results
On failure: save fix task proposal to state and add to Plans.md via approval command (see "Automatic Failure Re-ticketing")
On success: proceed to next task
Parallel mode (auto-selected for 2-3 tasks / forced with --parallel N)
Execute tasks marked [P] with N workers in parallel.
When --parallel N is explicitly specified, use this mode regardless of task count.
Isolate with git worktree when same-file write conflicts occur.
Codex mode (explicit --codex only)
Delegate tasks to Codex CLI via the official plugin codex-plugin-cc companion:
Companion communicates with Codex via App Server Protocol, providing job management, thread resume, and structured output.
Verify results; fix independently when quality criteria are not met.
Cursor mode (adapter candidate; not auto-selected)
On Cursor host, .cursor/AGENTS.md and .cursor-plugin/plugin.json are the bootstrap route. Cursor remains candidate — supported claims are prohibited.
Solo / Parallel: Task tool or .cursor/agents/worker.md subagent
Breezing: Worker parallelism for non-overlapping file groups only; Reviewer / cherry-pick / Advisor remain serial as in core
Multitask / background agents: Smoke target only; do not claim Claude Agent Teams parity
Explicit Task/subagent model takes priority over routed default.
Verification:
bash tests/test-cursor-adapter-candidate.sh
Breezing mode (auto-selected for 4+ tasks / forced with --breezing)
Team execution with role separation: Lead / Worker / Advisor / Reviewer.
In Codex, assumes native subagent orchestration using spawn_agent, wait, send_input, resume_agent, close_agent — does not use the old TeamCreate/TaskCreate-based description.
In Cursor, maps to Task/subagent/background agents, but review/cherry-pick serial responsibilities remain on the core side (adapter smoke target).
Permission policy:
Current shipped default is bypassPermissions
--auto-mode is treated as an opt-in rollout flag for compatible parent sessions
Do not write undocumented autoMode value in permissions.defaultMode or agent frontmatter permissionMode
CC v2.1.69+: Nested teammates are prohibited by the platform, so do not add redundant nested-prevention wording to Worker/Reviewer prompts.
Analyze dependency graph and determine execution order (Depends column)
Effort scoring per task (ultrathink injection determination)
Generate sprint-contract.json with node "${HARNESS_PLUGIN_ROOT}/scripts/generate-sprint-contract.js"
Add Reviewer perspective with bash "${HARNESS_PLUGIN_ROOT}/scripts/enrich-sprint-contract.sh" and stop if not approved with bash "${HARNESS_PLUGIN_ROOT}/scripts/ensure-sprint-contract-ready.sh"
Execute the following sequentially for each task (in dependency order):
API note: Written in Claude Code API syntax below.
In Codex environments, translate Agent(...) → spawn_agent(...), SendMessage(...) → send_input(...).
See API mapping table in team-composition.md for details.
for task in execution_order:
# B-1. Generate sprint-contract
contract_path = bash("node \"${HARNESS_PLUGIN_ROOT}/scripts/generate-sprint-contract.js\" {task.number}")
contract_path = bash("bash \"${HARNESS_PLUGIN_ROOT}/scripts/enrich-sprint-contract.sh\" {contract_path} --check \"Verify DoD from reviewer perspective\" --approve")
bash("bash \"${HARNESS_PLUGIN_ROOT}/scripts/ensure-sprint-contract-ready.sh\" {contract_path}")
# B-2. Worker spawn (foreground, worktree isolated)
Plans.md: task.status = "cc:WIP" # Update on start (untouched tasks remain cc:TODO)
briefing_header = ""
if universal_violations:
briefing_header = (
"🚨 Universal violations already detected in this session (do not repeat):\n"
+ "\n".join(f"- {v}" for v in universal_violations)
+ "\n\n"
)
worker_result = Agent(
subagent_type="claude-code-harness:worker",
prompt=briefing_header + "Task: {task.content}\nDoD: {task.DoD}\ncontract_path: {contract_path}\nmode: breezing",
isolation="worktree",
run_in_background=false
)
worker_id = worker_result.agentId
# B-3. Lead calls Advisor only when Worker returns advice request
if worker_result.type == "advisor-request.v1":
advisor_result = Advisor(prompt=worker_result.request_json)
worker_result = SendMessage(to=worker_id, message="advisor-response.v1: {advisor_result}")
# B-3.5. self_review gate (Lead mechanically verifies before spawning Reviewer)
self_review_failures = 0
MAX_SELF_REVIEW_RETRIES = 2
while True:
unverified = [r for r in worker_result.self_review if (not r.get("verified")) or (not r.get("evidence"))]
if not unverified:
break
self_review_failures += 1
if self_review_failures > MAX_SELF_REVIEW_RETRIES:
Plans.md: task.status = "cc:TODO"
raise EscalationError(f"self_review not confirmed after 3 returns (rules: {[u['rule'] for u in unverified]})")
SendMessage(to=worker_id, message=f"self_review has unconfirmed rules: {[u['rule'] for u in unverified]}. Fill evidence for each rule with actual command output or literal test results, attach TDD evidence when required, set verified=true, then amend")
worker_result = wait_for_response(worker_id)
# B-4. Lead runs review (Codex exec priority)
diff_text = git("-C", worker_result.worktreePath, "show", worker_result.commit)
verdict = codex_exec_review(diff_text) or reviewer_agent_review(diff_text)
profile = jq(contract_path, ".review.reviewer_profile")
review_input = "review-output.json"
if profile == "runtime":
review_input = bash("cd {worker_result.worktreePath} && bash \"${HARNESS_PLUGIN_ROOT}/scripts/run-contract-review-checks.sh\" {contract_path}")
runtime_verdict = jq(review_input, ".verdict")
if runtime_verdict == "REQUEST_CHANGES":
verdict = "REQUEST_CHANGES"
elif runtime_verdict == "DOWNGRADE_TO_STATIC":
pass
browser_result = ""
if profile == "browser":
browser_artifact = bash("bash \"${HARNESS_PLUGIN_ROOT}/scripts/generate-browser-review-artifact.sh\" {contract_path}")
browser_result = bash("bash \"${HARNESS_PLUGIN_ROOT}/scripts/browser-review-runner.sh\" {browser_artifact}")
browser_verdict = jq(browser_result, ".browser_verdict")
if browser_verdict == "REQUEST_CHANGES":
verdict = "REQUEST_CHANGES"
elif browser_verdict == "APPROVE" and verdict != "REQUEST_CHANGES":
verdict = "APPROVE"
bash("bash \"${HARNESS_PLUGIN_ROOT}/scripts/write-review-result.sh\" {review_input} {latest_commit} --browser-result {browser_result}")
# B-5. Fix loop (on REQUEST_CHANGES, up to max_iterations from contract)
review_count = 0
MAX_REVIEWS = read_contract(contract_path, ".review.max_iterations") or 3
latest_commit = worker_result.commit
while verdict == "REQUEST_CHANGES" and review_count < MAX_REVIEWS:
SendMessage(to=worker_id, message="Findings: {issues}\nPlease fix and amend")
updated_result = wait_for_response(worker_id)
latest_commit = updated_result.commit
diff_text = git("-C", worker_result.worktreePath, "show", latest_commit)
verdict = codex_exec_review(diff_text) or reviewer_agent_review(diff_text)
review_count++
# B-6. APPROVE → cherry-pick to trunk (via feature branch)
if verdict == "APPROVE":
TRUNK=$(git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null | sed 's|refs/remotes/origin/||' || echo "main")
git checkout "$TRUNK"
if git("merge-base", "--is-ancestor", latest_commit, "HEAD"):
pass # Already on trunk — skip cherry-pick (re-entry prevention)
else:
git cherry-pick --no-commit {latest_commit}
git commit -m "{task.content}"
if worker_result.worktreePath:
git worktree remove {worker_result.worktreePath} --force
if worker_result.branch and worker_result.branch not in ["main", "master"] and worker_result.branch != TRUNK:
git branch -D {worker_result.branch}
Plans.md: task.status = "cc:done [{hash}]"
HASH=$(git rev-parse --short HEAD)
REVIEW_RESULT_PATH=".claude/state/review-results/${task.number}.review-result.json"
bash "${HARNESS_PLUGIN_ROOT}/scripts/auto-checkpoint.sh" \
"${task.number}" "${HASH}" "${contract_path}" "${REVIEW_RESULT_PATH}" \
|| true # fail-open: continue even in environments without harness-mem
else:
→ Escalate to user
# B-7. Progress feed
print("📊 Progress: Task {completed}/{total} done — {task.content}")
Advisor Protocol (common to all modes)
Advisor is neither "implementer" nor "reviewer."
It is a consultation role that enters only when needed to help the executor decide the next step.
Worker does not spawn generic subagents; returns advisor-request.v1 only when needed
Lead calls Advisor once
Advisor returns one of PLAN / CORRECTION / STOP
Lead returns that advice to the same Worker to continue
Reviewer looks only at the final artifact; does not issue APPROVE/REQUEST_CHANGES to Advisor responses
Advisor in Solo mode
In solo execution, the parent session serves as Lead.
That is: "implement yourself, consult Advisor yourself, and then send to independent review at the end."
Consultation conditions are the same as loop/breezing
Consultation budget is also max 3 per task
STOP stops there and escalates to user
Do not skip the review artifact gate
Sprint Contract
sprint-contract is a small contract file that makes "what this task needs to pass" readable in the same way by both machine and human.
Default location: .claude/state/contracts/<task-id>.sprint-contract.json
Save fix task proposal to .claude/state/pending-fix-proposals.jsonl:
Number: original task number + .fix suffix (e.g., 26.1.fix)
Content: fix: [original task name] - [failure cause category]
DoD: tests/CI pass
Depends: original task number
When user sends approve fix <task_id>, add to Plans.md as cc:TODO
Discard proposal with reject fix <task_id>. When only 1 pending item, yes / no also works
Review Loop
Quality verification stage that runs automatically after implementation (after step 5).
Applied uniformly across all modes (Solo / Parallel / Breezing).
In Parallel mode, each Worker runs the same loop as step 10 (external review acceptance).
Review execution priority
1. Codex exec (priority)
↓ codex command not found or timeout (120s)
2. Internal Reviewer agent (fallback)
APPROVE / REQUEST_CHANGES criteria
Pass the following threshold criteria to the reviewer and have it judge verdict by these criteria only.
Improvement suggestions outside the criteria are returned as recommendations but do not affect verdict.
Severity
Definition
Verdict effect
critical
Security vulnerability, data loss risk, potential production incident
1 or more → REQUEST_CHANGES
major
Existing feature breakage, clear spec conflict, test failure
Important: When only minor/recommendation, always return APPROVE.
"Improvements that would be nice to have" are not a reason for REQUEST_CHANGES.
Codex exec review (via official plugin)
Save HEAD at task start as BASE_REF and use the diff from that ref as the review target.
Use the companion review of official plugin codex-plugin-cc.
# Record base ref at task start (run before cc:WIP update in Step 2)
BASE_REF=$(git rev-parse HEAD)
# ... after implementation ...
# Run structured review from official plugin
bash "${HARNESS_PLUGIN_ROOT}/scripts/codex-companion.sh" review --base "${BASE_REF}"
REVIEW_EXIT=$?
AI Residuals scan continues to run with bash "${HARNESS_PLUGIN_ROOT}/scripts/review-ai-residuals.sh",
combined with companion review results to determine final verdict.
When Codex exec is unavailable (command -v codex fails or exit code ≠ 0):
Agent tool: subagent_type="reviewer"
prompt: "Please review the following changes. Criteria: critical/major → REQUEST_CHANGES; minor/recommendation only → APPROVE. diff: {git diff ${BASE_REF}}"
Reviewer agent runs safely in Read-only mode (Write/Edit/Bash disabled).
Fix loop (on REQUEST_CHANGES)
review_count = 0
contract_path = get_sprint_contract_path()
MAX_REVIEWS = read_contract(contract_path, ".review.max_iterations") or 3
while verdict == "REQUEST_CHANGES" and review_count < MAX_REVIEWS:
1. Parse review findings (critical / major only)
2. Implement fix for each finding
3. Run review again (same criteria, same priority)
review_count++
if review_count >= MAX_REVIEWS and verdict != "APPROVE":
→ Escalate to user
→ Show "Fixed MAX_REVIEWS times but following critical/major findings remain" + finding list
→ Wait for user decision (continue / abort)
Application in Breezing mode
In Breezing mode, Lead runs the review loop (see Phase B above):
Worker implements in worktree → commits → returns result to Lead
Lead runs Codex exec review (priority) / Reviewer agent (fallback)
REQUEST_CHANGES → Lead sends fix instruction to Worker via SendMessage → Worker amends
After fix, re-review (up to MAX_REVIEWS = read_contract(contract_path, ".review.max_iterations") or 3 times)
APPROVE → Lead cherry-picks to trunk (default branch) → updates Plans.md to cc:done [{hash}]
Completion Report Format
Visual summary auto-output at task completion (cc:done + after commit).
Intended to convey changes and impact to non-experts as well.
What was done: Auto-extracted from git diff --stat HEAD~1 and commit message. Minimize jargon; start with a verb.
What changed: Infer Before/After from task "Content" and "DoD". Prioritize user experience changes.
Changed files: Retrieved from git diff --name-only HEAD~1. Abbreviate with count when exceeding 5 files.
Remaining issues: List cc:TODO / cc:WIP tasks from Plans.md. Explicitly note whether already in Plans.md.
Review: Display review result (APPROVE / REQUEST_CHANGES → APPROVE).
Reporting in Parallel mode
1 task (when --parallel is forced): Use Solo template
Multiple tasks: Use Breezing aggregate template (see below)
Reporting in Breezing mode
Output together after all tasks complete. List each task in abbreviated form (what was done + commit hash only),
then output an overall summary (total changed files + remaining issues) at the end:
