GSD Pi is a command-line coding agent and project workflow system that plans, implements, verifies, and tracks software work through milestones, tasks, Git worktrees, and stored project notes. It is for developers who want structured, longer-running agent sessions using different model providers. The catalogue entries extend GSD Pi with skills and agents.
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 open-gsd/gsd-pi --skill spike-wrap-upgit clone --depth 1 https://github.com/open-gsd/gsd-piWrote 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/open-gsd/gsd-pi/spike-wrap-up)<a href="https://agentmods.dev/skills/open-gsd/gsd-pi/spike-wrap-up"><img src="https://agentmods.dev/badge/skills/open-gsd/gsd-pi/spike-wrap-up/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/open-gsd/gsd-pi/spike-wrap-up"><img src="https://agentmods.dev/badge/skills/open-gsd/gsd-pi/spike-wrap-up.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 24 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Agent Snooping · line 68 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00102 | $0.01662 |
| Opus 5 | $0.00051 | $0.00831 |
| Sonnet 5 | $0.00020 | $0.00332 |
| Haiku 4.5 | $0.00010 | $0.00166 |
Grade A, and why
spike-wrap-up 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 6d 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 — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GSD already watches .agents/skills/ (and .claude/skills/ as a legacy compat path) at both user and project levels — see src/resources/extensions/gsd/skill-discovery.ts. Any skill written there is picked up on the next session without further wiring. This skill is the bridge from "spike done" to "skill available."
Invocation points:
- End of Phase 3 (synthesize) in
/gsd start spike— prompt suggests running this skill - User has a spike directory and wants to harvest it
- Pre-existing
RECOMMENDATION.mdthat deserves a permanent home
<core_principle> NOT EVERY SPIKE DESERVES A SKILL. If the recommendation was "don't do X," there may be no reusable guidance. Ask the user first; exit without writing if the answer is no.
PROJECT-LOCAL, NOT USER-GLOBAL. Write to .agents/skills/ in the project root, not ~/.agents/skills/. The skill encodes project-specific choices that should not leak into unrelated projects.
DESCRIPTION IS THE DISCOVERABILITY SIGNAL. The description field in frontmatter is the primary signal the agent uses to judge relevance and decide whether to load the skill — it is a heuristic, not a deterministic trigger. Write it as keywords the future agent will plausibly encounter, not a summary.
</core_principle>
Step 1: Find the spike
- List directories under
.gsd/workflows/spikes/— sort by mtime, newest first. - If multiple exist, ask the user which to wrap up. Default: the most recent.
- If none exist, tell the user and stop. This skill requires a completed spike.
Read the core files:
<spike>/SCOPE.md— the question that was asked<spike>/research/*.md— the angles investigated<spike>/RECOMMENDATION.md— the conclusion
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.
- 6d ago First seen · 139 lines · 102 tokens per session scan A 9b4bc8b0dcb5
spike-wrap-up is a skill published in the GitHub repository open-gsd/gsd-pi (1,214 stars, last pushed today), licensed MIT. It adds 102 tokens to every session and 1,662 once invoked, about $0.0005 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.
Other skills, from other repositories
gsd-mempalace-capture
File a phase artifact into MemPalace; mirror decision facts into its temporal KG.
gsd-quick
Execute a quick task with GSD guarantees (atomic commits, state tracking) but skip optional agents.
gsd-complete-milestone
Archive completed milestone and prepare for next version.
gsd-quick-batch
Batch several /gsd:quick-shaped tasks together — planned, dispatched, and merged as one run.
gsd-review-backlog
Review and promote backlog items to active milestone.
gsd-map-codebase
Analyze codebase with parallel mapper agents to produce .planning/codebase/ documents.