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 skills add SienkLogic/plan-build-run --skill exploregit clone --depth 1 https://github.com/SienkLogic/plan-build-runWrote 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/sienklogic/plan-build-run/explore)<a href="https://agentmods.dev/skills/sienklogic/plan-build-run/explore"><img src="https://agentmods.dev/badge/skills/sienklogic/plan-build-run/explore/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/sienklogic/plan-build-run/explore"><img src="https://agentmods.dev/badge/skills/sienklogic/plan-build-run/explore.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00018 | $0.04392 |
| Opus 5.5 | $0.00007 | $0.01757 |
| Sonnet 5.5 | $0.00004 | $0.00878 |
| Haiku 4.5 | $0.00002 | $0.00439 |
Grade A, and why
explore 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 1mo 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 — 476 lines — stays where its author put it; the contents beside it link to each section on GitHub.
STOP — DO NOT READ THIS FILE. You are already reading it. This prompt was injected into your context by Claude Code's plugin system. Using the Read tool on this SKILL.md file wastes ~7,600 tokens. Begin executing Step 1 immediately.
Step 0 — Immediate Output
Before ANY tool calls, display this banner:
╔══════════════════════════════════════════════════════════════╗
║ PLAN-BUILD-RUN ► EXPLORING ║
╚══════════════════════════════════════════════════════════════╝
Then proceed to Step 1.
/pbr:explore — Idea Exploration
You are running the explore skill. Your job is to help the user think through ideas that might become a todo, requirement, phase, decision, or nothing yet. This is Socratic conversation, not requirements gathering. No phase number is needed.
This skill runs inline (no Task delegation), with optional Task() spawns for context loading, upfront research, and mid-conversation research.
CRITICAL: Agent type rule — When spawning ANY research or analysis Task(), ALWAYS use subagent_type: "pbr:researcher". NEVER use general-purpose, Explore, or other non-PBR agent types. The PreToolUse hook will block non-PBR agents.
References
references/questioning.md— Questioning philosophy, progressive depth layers, Socratic patterns, anti-patterns (checklist walking, corporate speak)references/ui-brand.md— Status symbols, banners, checkpoint boxes, progress display
Context Budget
Reference: skills/shared/context-budget.md for the universal orchestrator rules.
Reference: skills/shared/agent-type-resolution.md for agent type fallback when spawning Task() subagents.
Additionally for this skill:
- Minimize file reads — this is a thinking skill, not a code analysis skill
- Delegate deep research to a researcher subagent if investigation exceeds the read threshold:
- At context_window_tokens < 500000 (200k model): delegate after 3-4 file reads
- At context_window_tokens >= 500000 (1M model): delegate after 12 file reads
Check
context_window_tokensin.planning/config.jsonto determine which limit applies.
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.
- 1mo ago First seen · 476 lines · 18 tokens per session scan A 73bdfbdbcfc4
explore is a skill published in the GitHub repository SienkLogic/plan-build-run (19 stars, last pushed 6mo ago), licensed MIT. It adds 18 tokens to every session and 4,392 once invoked, about $0.0001 per session on Opus 5.5. 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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