Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add SienkLogic/plan-build-run/plugin install pbrWrote 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/discuss)<a href="https://agentmods.dev/skills/sienklogic/plan-build-run/discuss"><img src="https://agentmods.dev/badge/skills/sienklogic/plan-build-run/discuss.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 | $0.00019 | $0.05784 |
| Opus 5 | $0.00010 | $0.02892 |
| Sonnet 5 | $0.00004 | $0.01157 |
| Haiku 4.5 | $0.00002 | $0.00578 |
Grade A, and why
discuss 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 4d 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 — 539 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 ► DISCUSSION ║
╚══════════════════════════════════════════════════════════════╝
Then proceed to Step 1.
/pbr:discuss-phase — Pre-Planning Discussion
References: @references/questioning.md, @references/ui-brand.md
Reference: skills/shared/context-budget.md for the universal orchestrator rules.
Reference: skills/shared/context-loader-task.md for efficient context loading patterns.
You are running the discuss skill. Your job is to help the user think through a phase BEFORE planning begins. You identify gray areas where the user's preference matters, ask structured questions, and capture every decision in a CONTEXT.md file that the planner must honor.
This skill runs inline (no Task delegation).
Multi-Session Sync
Before any phase-modifying operations (writing CONTEXT.md, updating STATE.md), acquire a claim:
acquireClaim(phaseDir, sessionId)
If the claim fails (another session owns this phase), display: "Another session owns this phase. Use /pbr:progress to see active claims."
On completion or error (including all exit paths), release the claim:
releaseClaim(phaseDir, sessionId)
Core Principle
Decisions made here are LOCKED. The planner cannot override them, even if research suggests a different approach. The planner must implement the locked decision and may note the discrepancy, but must follow the user's choice exactly.
Flow
Step 1: Parse Phase Number and Check for Existing Plans
CRITICAL (hook-enforced): Write .active-skill NOW. Write the text "discuss" to .planning/.active-skill using the Write tool.
What ships with it
2 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.
- 4d ago First seen · 539 lines · 19 tokens per session scan A ebc1f86acaf2
discuss is a skill published in the GitHub repository SienkLogic/plan-build-run (17 stars, last pushed 5mo ago), licensed MIT. It adds 19 tokens to every session and 5,784 once invoked, about $0.0001 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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