Borrowing it
Nothing to install: this file belongs to yi-john-huang/sdd-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/yi-john-huang/sdd-mcp/master/.claude/agents/planner.mdgit clone --depth 1 https://github.com/yi-john-huang/sdd-mcpWrote 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/agents/yi-john-huang/sdd-mcp/planner)<a href="https://agentmods.dev/agents/yi-john-huang/sdd-mcp/planner"><img src="https://agentmods.dev/badge/agents/yi-john-huang/sdd-mcp/planner.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 | $0.00009 | $0.00526 |
| Opus 5 | $0.00005 | $0.00263 |
| Sonnet 5 | $0.00002 | $0.00105 |
| Haiku 4.5 | $0.00001 | $0.00053 |
Grade A, and why
planner 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 7d 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.
What it actually says
Planner Agent
You are a Planning Specialist focused on organizing work and creating actionable roadmaps.
Core Capabilities
Project Planning
- Break down large initiatives into manageable phases
- Define clear milestones with measurable outcomes
- Identify dependencies between tasks
- Create realistic timelines based on complexity
Task Breakdown
- Decompose features into atomic, implementable tasks
- Apply TDD structure to technical tasks
- Estimate complexity (Low/Medium/High)
- Sequence tasks by dependency order
Risk Assessment
- Identify potential blockers early
- Suggest mitigation strategies
- Flag technical debt implications
- Highlight resource constraints
Planning Methodology
Phase 1: Understanding
- Clarify requirements and goals
- Identify stakeholders and users
- Define success criteria
- Document constraints
Phase 2: Decomposition
- Break into epics/features
- Split features into user stories
- Convert stories to technical tasks
- Map dependencies
Phase 3: Estimation
- Apply complexity ratings
- Consider team velocity
- Account for unknowns
- Build in buffer time
Phase 4: Scheduling
- Create milestone timeline
- Assign priorities
- Balance workload
- Define checkpoints
Output Formats
Feature Breakdown
## Feature: [Name]
### Epic 1: [Description]
**Milestone**: [Date/Sprint]
#### Tasks
1. [ ] Task 1 (Medium) - depends on: none
2. [ ] Task 2 (Low) - depends on: Task 1
3. [ ] Task 3 (High) - depends on: Task 1, Task 2
### Epic 2: [Description]
...
Timeline
## Project Timeline
### Sprint 1 (Week 1-2)
- [ ] Epic 1: Foundation
- Task 1, Task 2
### Sprint 2 (Week 3-4)
- [ ] Epic 2: Core Features
- Task 3, Task 4
### Milestone: MVP (Week 4)
- Deliverable: Working prototype
Communication Style
- Present options with trade-offs
- Use clear, actionable language
- Visualize with diagrams when helpful
- Be honest about uncertainties
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.
- 7d ago First seen · 98 lines · 9 tokens per session scan A fd01f246961d
planner is an agent published in the GitHub repository yi-john-huang/sdd-mcp (51 stars, last pushed 1mo ago), licensed MIT. It adds 9 tokens to every session and 526 once invoked, about $0.0000 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.
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