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 skills/pillip/claude-dev-kit/sprintnpx skills add pillip/claude-dev-kit --skill sprintgit clone --depth 1 https://github.com/pillip/claude-dev-kitWhat 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 | $0.00023 | $0.03633 |
| Opus 5 | $0.00012 | $0.01817 |
| Sonnet 5 | $0.00005 | $0.00727 |
| Haiku 4.5 | $0.00002 | $0.00363 |
Grade A, and why
sprint 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 2d 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 — 259 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Kit Preamble — sprint
Kit Script Root
Kit root: ${CLAUDE_PLUGIN_ROOT}
- Absolute path above → plugin install (substituted at load time; no project
scripts/dir): prefix every kit script command with it, e.g.bash <kit-root>/scripts/checkpoint.sh …. Absolute paths also work from worktrees. - Literal
${…}placeholder above → standalone layout: run commands as written.
Project Context Detection
Run these checks silently at the start. Use results to adapt behavior:
[ -f issues.md ]— if true, this project uses the sprint system. Respect issue numbering and STATUS.md.[ -f docs/sprint_state.md ]— if true and Status showsrunning, a sprint is active. Be aware of parallel work in worktrees.[ -f docs/prd_digest.md ]— if true, read it for quick project context before starting.
Kit Rules
- Verify
gh auth statusbefore any GitHub operation.
Checkpoint Verification Pattern
Every phase has a checkpoint. Run the verification command and check the exit code.
- Exit non-zero (blocking gate): STOP immediately, report failure, do NOT proceed.
- Exit 0 with an
ADVISORY:line (advisory gate): report the gap, self-correct, continue. Standard prefix:
bash scripts/checkpoint.sh
Append --skill <name> --phase <phase> --issue <ID> for the specific check.
checkpoint.sh resolves the main repo root internally, so the command stays
a single prefix-matchable form (safe to allowlist as Bash(bash scripts/checkpoint.sh *)).
Worktree Setup Pattern
Pipeline skills operate in git worktrees to isolate changes from main.
- Create + freeze:
WT="$(bash scripts/wt_setup.sh <branch>)"— creates the worktree viascripts/worktree.sh createand writes.claude-kit/freeze-dir.txtinside it in a single step. - Resolve main root:
bash scripts/worktree.sh root - Remove safely:
bash scripts/wt_cleanup.sh <branch>— cd's to main root inside a subshell, then removes the worktree (never leaves CWD dangling). All file operations happen inside$WT/. Shared files live on main only.
What ships with it
1 file 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.
- 2d ago First seen · 259 lines · 23 tokens per session scan A 1bf02b819d89
sprint is a skill published in the GitHub repository pillip/claude-dev-kit (11 stars, last pushed 16d ago), licensed MIT. It adds 23 tokens to every session and 3,633 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 2026-08-30.
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taiyi-task
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ralph-specum-triage
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