Borrowing it
Nothing to install: this file belongs to Kemetra/Seshat-BI. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Kemetra/Seshat-BI/main/.claude/skills/showcase-build/SKILL.mdgit clone --depth 1 https://github.com/Kemetra/Seshat-BIWrote 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/kemetra/seshat-bi/showcase-build)<a href="https://agentmods.dev/skills/kemetra/seshat-bi/showcase-build"><img src="https://agentmods.dev/badge/skills/kemetra/seshat-bi/showcase-build/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/kemetra/seshat-bi/showcase-build"><img src="https://agentmods.dev/badge/skills/kemetra/seshat-bi/showcase-build.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 | $0.00240 | $0.02944 |
| Opus 5 | $0.00120 | $0.01472 |
| Sonnet 5 | $0.00048 | $0.00589 |
| Haiku 4.5 | $0.00024 | $0.00294 |
Grade A, and why
showcase-build 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 10d 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 — 220 lines — stays where its author put it; the contents beside it link to each section on GitHub.
showcase-build
- Roadmap feature / spec:
specs/127-showcase-build/(Shareable Seshat Proof / Showcase Bundle). - Authority category: Product Module /
artifact-writing(docs/architecture/product-modules.md). - Delivery shape: a read-only skill over a reusable library function
(
src/seshat/showcase/build.py), per the ratified Option B decision (docs/roadmap/decisions/cli-verbs-vs-skill-driven.md, 2026-07-07). No new top-level CLI verb is added --seshat.cli._DISPATCHhas noshowcasekey, and importingseshat.showcaseadds no network/driver import (mirrors the B1/B3 lazy-import guard).
A "shareable proof" is a single offline folder that answers "what has Seshat governed here, and can I trust it?" -- the readiness spine, the evidence, the blockers, the approvals, and the metric lineage together, a truthful badge (never a fabricated score), and a disclosure manifest stating exactly what is included, redacted, omitted, and unavailable. This skill is the COMPOSER: it fills the bundle from surfaces that already ship (the Explorer projection, the Passport, the disclosure scanner); it originates no readiness truth of its own.
Module contract (the filled F024 declaration)
- Authority category: Product Module
- Capability level:
artifact-writing(exactly one) - Product layer:
6(delivery/handoff rendering, sibling of the F013 handoff pack and the F026/F028 read-only lenses) - Owner: the analyst or maintainer requesting the proof
- Status: Authored
What it does (one line)
Composes the already-committed readiness projection, an evidence-derived badge, and a four-category disclosure manifest into one offline HTML bundle, running the fail-closed disclosure scan over the FULL composed body before ever writing a file.
Core Authority it READS
seshat.explorer.build.build_explorer_projection-- stages, evidence states (available/missing/deferred), blockers, approvals, next actions, metric lineage, and input-defect entries.seshat.passport(verify_passport) -- ONLY when two snapshot paths are supplied, to compute the optional before/after section.seshat.disclosure.scan_disclosure-- the shared fail-closed scanner, run over the full composed bundle body (not merely the base projection).seshat.cli.guards.resolve_local_output-- the contained-output guard.
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.
- 10d ago First seen · 220 lines · 240 tokens per session scan A eb74608cd93a
showcase-build is a skill published in the GitHub repository Kemetra/Seshat-BI (2 stars, last pushed yesterday), licensed Apache-2.0. It adds 240 tokens to every session and 2,944 once invoked, about $0.0012 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 2026-08-31.
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