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 sanky369/vibe-building-skills --skill sprint-runnergit clone --depth 1 https://github.com/sanky369/vibe-building-skillsWrote 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/sanky369/vibe-building-skills/sprint-runner)<a href="https://agentmods.dev/skills/sanky369/vibe-building-skills/sprint-runner"><img src="https://agentmods.dev/badge/skills/sanky369/vibe-building-skills/sprint-runner/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/sanky369/vibe-building-skills/sprint-runner"><img src="https://agentmods.dev/badge/skills/sanky369/vibe-building-skills/sprint-runner.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 | $0.00117 | $0.02817 |
| Opus 5.5 | $0.00047 | $0.01127 |
| Sonnet 5.5 | $0.00023 | $0.00563 |
| Haiku 4.5 | $0.00012 | $0.00282 |
Grade A, and why
sprint-runner 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 2mo 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 — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sprint Runner
Run a real Foundation Sprint (Click, Knapp & Zeratsky) or Design Sprint (Sprint, Knapp) as a live workshop. The user is Facilitator and Decider. You are the co-facilitator running the room. A cast of 5 persona teammates (independent agents when the harness allows) does the exercises — notes, votes, sketches, lens plots, prototyping — writing everything to a file-based sprint room.
Prime rule: the sprint is outcome-gated, never time-gated. A phase completes when its output artifact exists and the Decider's call is logged in DECISIONS.md. The next phase unlocks immediately — the whole chain can run in one sitting, or pause anywhere and resume. Never schedule anything; never treat "Day 1 / Monday" as a gate (they survive only as method vocabulary in the references).
Files are the source of truth; agents are a performance layer over them. Anything an agent knows that isn't in a file will be lost — write it down.
Capability tiers (pick the highest the harness supports)
| Tier | Harness capability | Team mechanics |
|---|---|---|
| 1 — Live team | Can spawn persistent named agents AND continue them later (e.g. Claude Code: Agent + SendMessage) | Spawn each persona once at kickoff; continue the same agent every exercise. Teammates remember the sprint and carry opinions forward. |
| 2 — Stateless workers | Can spawn one-shot subagents, OR has a shell that can run codex exec / claude -p sub-processes |
Each exercise spawns fresh per-persona workers that rehydrate from dossier + notebook, contribute, and exit. |
| 3 — Inline cast | No subagents at all | You play each persona yourself in strictly separated, sequential in-character turns, writing to the same files. Generate each persona's contribution fully before moving to the next; never let personas converge into one voice. |
Never fail because a tool is missing — drop a tier. Rehydration from files also covers session breaks at every tier. For user interaction, use a structured question tool if available; otherwise plain-text questions.
What ships with it
5 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.
- 2mo ago First seen · 119 lines · 117 tokens per session scan A c0bc24a892de
sprint-runner is a skill published in the GitHub repository sanky369/vibe-building-skills (31 stars, last pushed 3mo ago), licensed MIT. It adds 117 tokens to every session and 2,817 once invoked, about $0.0005 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 2026-08-30.
sprint-runner compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| sprint-runnersanky369/vibe-building-skills | Skill | 31 | 3mo ago | MIT | A | 117 | Claude Code, Codex |
| ads-youtubeAgriciDaniel/claude-ads | Skill | 11k | 5d ago | MIT | A | 84 | Claude Code |
| ads-launchAgriciDaniel/claude-ads | Skill | 11k | 5d ago | MIT | A | 45 | Claude Code |
| happiness-skillkangarooking/cangjie-skill | Skill | 12k | 1mo ago | MIT | A | 136 | Claude Code, Codex |
| setup-matt-pocock-skillsdevcxl/mattpocock-skills-zh | Skill | 530 | 3d ago | MIT | A | 43 | Claude Code, Codex |
| aiwg-regenerate-copilotjmagly/aiwg | Skill | 229 | yesterday | MIT | A | 25 | Claude Code, Codex |
| steward-prep-deliveryjmagly/aiwg | Skill | 229 | yesterday | MIT | A | 32 | Claude Code, Codex |