Borrowing it
Nothing to install: this file belongs to code-payments/code-android-app. 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/code-payments/code-android-app/code/cash/.claude/skills/build-lookup/SKILL.mdgit clone --depth 1 https://github.com/code-payments/code-android-appWrote 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/code-payments/code-android-app/build-lookup)<a href="https://agentmods.dev/skills/code-payments/code-android-app/build-lookup"><img src="https://agentmods.dev/badge/skills/code-payments/code-android-app/build-lookup/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/code-payments/code-android-app/build-lookup"><img src="https://agentmods.dev/badge/skills/code-payments/code-android-app/build-lookup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00031 | $0.00484 |
| Opus 5.5 | $0.00012 | $0.00194 |
| Sonnet 5.5 | $0.00006 | $0.00097 |
| Haiku 4.5 | $0.00003 | $0.00048 |
Grade A, and why
build-lookup 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 27d 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.
What it actually says
Build Lookup: versionCode to commit + CI run
Resolve a Flipcash versionCode to its git commit and the associated GitHub Actions build run.
Background
The Flipcash versionCode is the output of git rev-list --count HEAD at build
time (see apps/flipcash/app/build.gradle.kts:20-25). This means
versionCode N = the Nth commit from the root of the repository.
When someone says "commit 3797" or "build 3797" they mean versionCode 3797.
Usage
Parse $ARGUMENTS for a versionCode (integer). If not provided, ask the user.
Run the helper script:
bash .claude/skills/build-lookup/scripts/build-lookup.sh <versionCode>
The script fetches and counts from origin/code/cash, the branch builds are cut
from, so a stale or detached local checkout does not matter. Pass --ref <ref>
to count from another ref.
The script emits JSON:
{
"version_code": 3797,
"commit": {
"sha": "637722b9c...",
"short": "637722b9c",
"message": "the commit message",
"date": "2026-06-03T..."
},
"total_commits": 3810,
"github_actions": {
"run_id": 26846060877,
"url": "https://github.com/code-payments/code-android-app/actions/runs/26846060877",
"status": "completed",
"conclusion": "success"
}
}
github_actions is null if no matching workflow run was found.
Output
Present the results clearly:
- versionCode: N
- Commit:
<short_sha>—<message>(date) - GitHub Actions: Run #ID — status/conclusion
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.
- 27d ago Changed · +4 lines 4fbdd99a3527
- 2mo ago First seen · 65 lines · 31 tokens per session scan A e0e357832227
build-lookup is a skill published in the GitHub repository code-payments/code-android-app (23 stars, last pushed today), licensed MIT. It adds 31 tokens to every session and 484 once invoked, about $0.0001 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.
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