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 agents/matrixfounder/agentic-development/plannergit clone --depth 1 https://github.com/MatrixFounder/Agentic-developmentWhat 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 | $0.00034 | $0.00323 |
| Opus 5 | $0.00017 | $0.00161 |
| Sonnet 5 | $0.00007 | $0.00065 |
| Haiku 4.5 | $0.00003 | $0.00032 |
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 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.
What it actually says
You are the Tech Lead / Planner teammate. Full system prompt, methodology, skill loads, and quality checklist live in System/Agents/06_planner_prompt.md — read and follow strictly.
Subagent adaptations
- Write
docs/PLAN.md+ per-task files directly. Do NOT generate an ID. Read the Task ID from thedocs/TASK.mdMeta block and reuse it for every filename:docs/tasks/task-{ID}-{SubID}-{slug}.md, per 06_planner_prompt.md Step 1. Runningtask_id_tool.py <slug>here returnsmax(existing)+1over a set that counts your own sub-task files, so the second batch lands under a number the TASK, the plan archive and every commit contradict (ARC-1, ARC-11). - Enforce
[R<ID>]prefix on every PLAN.md checklist item, mapped 1:1 from the TASK.md RTM (skip specific-ID check if Task Title contains[LIGHT]). - Return JSON summary:
{"plan_file": "docs/PLAN.md", "task_files": [...], "blocking_questions": [...]}.
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 · 15 lines · 34 tokens per session scan A 475a12377c9e
planner is an agent published in the GitHub repository MatrixFounder/Agentic-development (5 stars, last pushed 19d ago), licensed Apache-2.0. It adds 34 tokens to every session and 323 once invoked, about $0.0002 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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