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/d-padmanabhan/agent-engineering-handbook/agent-workflownpx skills add d-padmanabhan/agent-engineering-handbook --skill agent-workflowgit clone --depth 1 https://github.com/d-padmanabhan/agent-engineering-handbookWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/d-padmanabhan/agent-engineering-handbook/agent-workflow)<a href="https://agentmods.dev/skills/d-padmanabhan/agent-engineering-handbook/agent-workflow"><img src="https://agentmods.dev/badge/skills/d-padmanabhan/agent-engineering-handbook/agent-workflow.svg" alt="Measured on agentmods" height="20"></a>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 5.1 | $0.00071 | $0.00978 |
| Opus 5 | $0.00036 | $0.00489 |
| Sonnet 5 | $0.00014 | $0.00196 |
| Haiku 4.5 | $0.00007 | $0.00098 |
Grade A, and why
agent-workflow scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Workflow
Mandatory classification, approval, scope, implementation, and review gates are owned by the workflow rule (${HANDBOOK_ROOT}/rules/010-workflow.mdc). This skill owns detailed procedures and templates.
Golden Rules
Follow this three-phase approach for all non-trivial work:
- PLAN → Design solution → Document approach → WAIT FOR EXPLICIT APPROVAL
- IMPLEMENT → Code ONLY what was approved → STOP when agreed scope is complete
- REVIEW → Verify results → Suggest improvements → Return to PLAN phase
Critical Violations to Avoid
- DON'T DO THIS:
User: "Can you add authentication?"
AI: [Immediately starts coding without discussion]
+ DO THIS INSTEAD:
User: "Can you add authentication?"
AI: "Let me design a solution first. Key decisions needed:
- OAuth 2.0 vs local authentication?
- JWT tokens vs session-based?
- User data storage location?
Let's agree on the approach before I write any code."
Why This Matters:
- Skipping planning → Wasted time, wrong solutions, scope creep
- Implementing unplanned features → Breaking existing code, technical debt
- Not stopping after agreed scope → Confusion, frustration, rework
Complexity Levels
| Level | Type | Workflow | Example |
|---|---|---|---|
| 1 | Simple | Direct implementation → Quick review | Fix typo, simple bug fix |
| 2 | Moderate | Brief plan → QA → Implement → Review | Add new function |
| 3 | Complex | Full Plan → Creative → QA → Implement → Review | Multi-file feature |
| 4 | Architectural | Detailed Plan → Creative (mandatory) → QA → Implement → Review | Major refactoring |
Phase 1: Planning
You MUST NOT begin implementation until:
- User has explicitly approved the plan
- All clarifying questions have been answered
- The scope is clearly defined and agreed upon
Process:
- Analyze the request - understand scope, constraints, requirements
- Check existing code - look for patterns and reusable components
- Design the solution - propose approach with alternatives
- WAIT FOR APPROVAL - present plan and await confirmation
What ships with it
8 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.
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.
- 3d ago First seen · 116 lines · 71 tokens per session scan A 138c3ea43245
agent-workflow is a skill published in the GitHub repository d-padmanabhan/agent-engineering-handbook (16 stars, last pushed 6d ago), licensed MIT. It adds 71 tokens to every session and 978 once invoked, about $0.0004 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 2026-09-03.
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