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 ikenga-hq/ikenga-pkgs --skill studio-block-authorgit clone --depth 1 https://github.com/ikenga-hq/ikenga-pkgsWrote 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/ikenga-hq/ikenga-pkgs/studio-block-author)<a href="https://agentmods.dev/skills/ikenga-hq/ikenga-pkgs/studio-block-author"><img src="https://agentmods.dev/badge/skills/ikenga-hq/ikenga-pkgs/studio-block-author/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/ikenga-hq/ikenga-pkgs/studio-block-author"><img src="https://agentmods.dev/badge/skills/ikenga-hq/ikenga-pkgs/studio-block-author.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 | $0.00043 | $0.00455 |
| Opus 5 | $0.00022 | $0.00228 |
| Sonnet 5 | $0.00009 | $0.00091 |
| Haiku 4.5 | $0.00004 | $0.00046 |
Grade A, and why
studio-block-author 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 9d 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
studio-block-author
Scaffold a new reusable block atom.
What it does
- Asks for the block's
kind(hook / beat / transition / narration_pattern / anchor_pack / sfx / music_preset / cta / sketch),id, name, and parameters. - Writes a schema-valid
block.json(validated againstBlockSchemafrom@ikenga/studio-schema) with:id,kind,name,description,template_path,parameters[],default_renderer,tags[],metadata{}.
- Writes the template:
- HyperFrames blocks →
index.html(the HF CLI hard-requiresindex.htmlas the composition entry; G-39). Minimal but real: a titled scene with adata-durationattribute and the block's parameters referenced as{{name}}placeholders / CSS vars. - Sketch blocks (
kind: 'sketch') → a minimal valid.excalidrawJSON scene.BlockSchema.default_rendereracceptsexcalidrawdirectly since WP-32/G-68; targeting older schemas, setdefault_renderer: 'auto'and carrymetadata.renderer_hint: 'excalidraw'instead (both forms remain valid).
- HyperFrames blocks →
- Registers via MCP
block.create_custom, which writes into<project>/blocks/custom/<id>/.
Template rules (G-39)
- HF entry file is
index.html— nevercontent.htmlortemplate.html. data-duration(ms) on the scene element drives timing.- Keep it minimal but renderable — a real HF input, not a polished design.
Usage
/studio-block-author
# → kind? id? params? → block.json + index.html (or .excalidraw) → block.create_custom
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.
- 9d ago First seen · 32 lines · 43 tokens per session scan A 45416ace6041
studio-block-author is a skill published in the GitHub repository ikenga-hq/ikenga-pkgs (0 stars, last pushed 2d ago), licensed Apache-2.0. It adds 43 tokens to every session and 455 once invoked, about $0.0002 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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