A work-cycle manager for Agent Driven Development. A cycle is a planned batch of related work completed before a human review point, usually lasting one to seven days.

Use it to plan a cycle, check its status, complete it, update the milestone plan, and record lessons learned.

It makes dependencies, parallel work, effort, and completion checks explicit before implementation begins.

cycle — Skill by MountainUnicorn

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add skills/mountainunicorn/add/cycle

Any agent

npx skills add MountainUnicorn/add --skill cycle

Clone the repo

git clone --depth 1 https://github.com/MountainUnicorn/add

Made for: Claude Code, Codex.

Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,909 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5	$0.00023	$0.04909
Opus 5	$0.00012	$0.02455
Sonnet 5	$0.00005	$0.00982
Haiku 4.5	$0.00002	$0.00491

Measured 2d ago against content hash d55f4be2800f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cycle scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

core/skills/cycle/SKILL.md · 463 lines

How it starts

The opening of the file, as written. The whole thing — 463 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADD Cycle Command v{{VERSION}}

Cycles are the operational unit of ADD work. They batch features, assess dependencies, plan parallelism, and define validation criteria before execution. This command manages the full cycle lifecycle: planning, status checks, and completion/retrospective.

Overview: What is a Cycle?

A cycle is the next batch of work before a human checkpoint. It:

Picks features from the current milestone's hill chart
Maps dependencies (what must serialize vs. what can parallelize)
Assigns agents and effort estimates
Defines per-item and overall validation criteria
Ranges from 1-7 days depending on maturity and scope

Cycle outputs:

.add/cycles/cycle-{N}.md — the cycle plan (generated by --plan)
Updated milestone hill chart (filled in by --status and --complete)
.add/learnings.md checkpoint entries (filled in by --complete)

Pre-Flight: Context & Setup

All cycle commands start by reading context:

Read .add/config.json to find current maturity level
- This governs cycle scope, parallelism limits, and documentation depth
Read active milestone from docs/milestones/
- Find the current milestone (look for Status: IN_PROGRESS, or the most recent)
- Fail gracefully if no active milestone (prompt to create one first)
Milestone health check — after loading the active milestone, check its status:
- No active milestone (planning.current_milestone is null or file doesn't exist): Display "No active milestone found." Offer: run /add:milestone --list to see available milestones, /add:milestone --switch <id> to activate one, or /add:milestone --create to create a new one. STOP cycle planning until a milestone is active.
- Active milestone is COMPLETE (all success criteria checked): Display "Current milestone {name} is COMPLETE." Scan docs/milestones/ for NOT_STARTED milestones. If found, suggest switching. If none, suggest creating one. STOP cycle planning until milestone is switched.
- All features at DONE/VERIFIED but milestone not formally complete: Display "All features in {name} appear complete. Consider closing this milestone with /add:cycle --complete or switching to the next one."
Check for existing active cycle in .add/cycles/
- If one exists and last activity was < 3 days ago, assume it's still active
- Otherwise, offer to archive and start fresh
Verify prerequisites (e.g., if POC maturity, skip some docs)
Check for session handoff — per the Session-Handoff Preflight in ${CLAUDE_PLUGIN_ROOT}/references/skill-epilogue.md

Read the full file on GitHub · 463 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2d ago First seen · 463 lines · 23 tokens per session scan A d55f4be2800f

Subscribe to this mod's changes

cycle is a skill published in the GitHub repository MountainUnicorn/add (11 stars, last pushed 1mo ago), licensed MIT. It adds 23 tokens to every session and 4,909 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Planning Project management agent-driven-development ai-agents claude-code methodology plugin sdlc

cycle

Getting it into your agent

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

ADD Cycle Command v{{VERSION}}

Overview: What is a Cycle?

Pre-Flight: Context & Setup

What this file has done since we first saw it

Other skills, from other repositories

team

ticket

triage

taiyi-plan

taiyi-task

taiyi-ultrawork