A repeatable end-to-end check for an aidemo engine change, rendering a bundled example into a video and checking the output files.

Use it after engine changes or when asked to verify that the example still renders, with either a real or local mock AI service.

It catches failures across the full rendering process instead of checking only one code component.

How tandryukha/aidemo configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to tandryukha/aidemo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/tandryukha/aidemo/main/.claude/skills/verify/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/tandryukha/aidemo

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/tandryukha/aidemo/verify/github.svg)](https://agentmods.dev/skills/tandryukha/aidemo/verify)

Your own site

<a href="https://agentmods.dev/skills/tandryukha/aidemo/verify"><img src="https://agentmods.dev/badge/skills/tandryukha/aidemo/verify/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/tandryukha/aidemo/verify"><img src="https://agentmods.dev/badge/skills/tandryukha/aidemo/verify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 164 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,026 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00164	$0.01026
Opus 5.5	$0.00066	$0.00410
Sonnet 5.5	$0.00033	$0.00205
Haiku 4.5	$0.00016	$0.00103

Measured 1mo ago against content hash 1d5903c87700, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

verify scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sf http://localhost:8787 >/dev/null && echo up

.claude/skills/verify/SKILL.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.

verify — e2e smoke test for engine changes

Your job: prove a change to the engine still renders the self-contained fixture end-to-end. Be terse; surface only failures + a final status.

Phases

Typecheck (always):
```
npm run typecheck
```

Fixture server (background; it's a plain static server on :8787):

node examples/local-demo/serve.mjs &
curl -sf http://localhost:8787 >/dev/null && echo up

Full e2e (needs OPENAI_API_KEY in .env, or OPENAI_BASE_URL pointing at a local OpenAI-compatible server — check with node bin/aidemo.mjs doctor first; it reports the resolved endpoint):
```
node bin/aidemo.mjs render examples/local-demo --headless
```
If neither is available, prefer the offline full e2e — the bundled mock serves both endpoints locally, so every stage still runs, with zero API spend (say which path you used in the report):
```
node test/mock-openai.mjs &            # mock TTS+STT on :8790
OPENAI_API_KEY= OPENAI_BASE_URL=http://127.0.0.1:8790/v1 \
  node bin/aidemo.mjs render examples/local-demo --headless
```
(Narration is sine tones and captions are placeholder words — fine for verifying the pipeline, useless for judging output quality.) Last resort: probe (selectors) + record + compose against previously generated audio//generated/ artifacts if present (captions --offline can regenerate caption cues from an existing voice.json without network).
Inspect the output — existence is not enough:
```
ffprobe -v error -show_entries format=duration -show_entries stream=codec_type \
  -of default=nw=1 examples/local-demo/output/final-demo.mp4
```
Expect one video + one audio stream and a plausible duration (the fixture is ~30–60 s). A suspiciously tiny file or missing audio stream is a failure.
Stage-scoped iteration — if the change touches one stage, re-run just it (voice, record, captions, compose, or probe for selector work) instead of a full re-render; each stage is independently re-runnable.

Read the full file on GitHub · 92 lines

Changes

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.

1mo ago Changed · +2 lines 1d5903c87700
1mo ago First seen · 90 lines · 164 tokens per session scan A f2ecc3bbeaa6

Subscribe to this mod's changes

verify is a skill published in the GitHub repository tandryukha/aidemo (20 stars, last pushed 7d ago), licensed MIT. It adds 164 tokens to every session and 1,026 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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aidemo: Skill for Claude Code