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.
npx agentmods add skills/arraydude/agent-skills/feature-workflownpx skills add arraydude/agent-skills --skill feature-workflowgit clone --depth 1 https://github.com/arraydude/agent-skillsWhat 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 | $0.00053 | $0.00930 |
| Opus 5 | $0.00026 | $0.00465 |
| Sonnet 5 | $0.00011 | $0.00186 |
| Haiku 4.5 | $0.00005 | $0.00093 |
Grade A, and why
feature-workflow 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Feature Workflow
Comprehensive guide for planning, specifying, implementing, and archiving features. Contains 19 rules across 6 categories, derived from 18+ completed feature specs.
When to Apply
Reference these guidelines when:
- Starting a new feature or migration
- Creating or updating a spec document
- Breaking work into implementation phases
- Tracking progress within a spec
- Deciding PR scope and branch strategy
- Completing a feature and archiving the spec
Rule Categories by Priority
| Priority | Category | Impact | Prefix |
|---|---|---|---|
| 1 | Spec Structure & Content | CRITICAL | spec- |
| 2 | Phase Design | CRITICAL | phase- |
| 3 | Progress Tracking | HIGH | tracking- |
| 4 | PR Strategy | HIGH | pr- |
| 5 | Archival | MEDIUM | archive- |
| 6 | Workflow Collaboration | MEDIUM | workflow- |
Quick Reference
1. Spec Structure & Content (CRITICAL)
spec-structure- Required spec document structure (title, metadata, ToC, sections)spec-content-sections- What each section must contain (Executive Summary, Goals, Architecture, Plan, Testing, Criteria)spec-current-state-analysis- Always start with current state: code inventory, problems with evidencespec-living-document- Update spec throughout implementation, never delete history
2. Phase Design (CRITICAL)
phase-zero-foundation- Phase 0 is always foundation/infrastructure workphase-decomposition- Break work into independently reviewable, shippable phasesphase-dependency-ordering- Order phases by dependency chain
3. Progress Tracking (HIGH)
tracking-status-indicators- Use consistent status indicators and progress trackerstracking-completion-reports- Write completion reports per phasetracking-metrics-tables- Include before/after metrics tables
4. PR Strategy (HIGH)
pr-target-develop-branch- CRITICAL: feature PRs always targetdevelop, nevermainpr-per-phase-strategy- One PR per phase for reviewabilitypr-branch-naming- Branch naming follows GitFlow conventionspr-scope-and-review- Keep PRs focused with clear scope documentation
What ships with it
20 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- AGENTS.md 19 KB
- rules/archive-preservation-format.md 2.0 KB
- rules/archive-when-to-archive.md 1.5 KB
- rules/phase-decomposition.md 1.8 KB
- rules/phase-dependency-ordering.md 1.5 KB
- rules/phase-zero-foundation.md 1.7 KB
- rules/pr-branch-naming.md 1.3 KB
- rules/pr-per-phase-strategy.md 1.6 KB
- rules/pr-scope-and-review.md 1.5 KB
- rules/pr-target-develop-branch.md 2.2 KB
- rules/spec-content-sections.md 2.1 KB
- rules/spec-current-state-analysis.md 2.3 KB
- rules/spec-living-document.md 1.6 KB
- rules/spec-structure.md 1.8 KB
- rules/tracking-completion-reports.md 1.7 KB
- rules/tracking-metrics-tables.md 1.5 KB
- rules/tracking-status-indicators.md 1.7 KB
- rules/workflow-collaboration-loop.md 2.0 KB
- rules/workflow-iteration-patterns.md 1.8 KB
- rules/workflow-spec-placement.md 1.4 KB
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.
- yesterday First seen · 106 lines · 53 tokens per session scan A 7386df9b00ab
feature-workflow is a skill published in the GitHub repository arraydude/agent-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 53 tokens to every session and 930 once invoked, about $0.0003 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 2026-08-31.
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