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 ArcBlock/agent-skills --skill blocklet-convertergit clone --depth 1 https://github.com/ArcBlock/agent-skillsWrote 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/arcblock/agent-skills/blocklet-converter)<a href="https://agentmods.dev/skills/arcblock/agent-skills/blocklet-converter"><img src="https://agentmods.dev/badge/skills/arcblock/agent-skills/blocklet-converter.svg" alt="Measured on agentmods" 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 | $0.01108 |
| Opus 5 | $0.00022 | $0.00554 |
| Sonnet 5 | $0.00009 | $0.00222 |
| Haiku 4.5 | $0.00004 | $0.00111 |
Grade A, and why
blocklet-converter 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 8d 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 — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blocklet Converter
Converts static web projects and Next.js applications into ArcBlock blocklets with proper configuration and validation.
Parameters
did (required): Pre-generated blocklet DID (format: z8ia...)
Example: "Convert this project to blocklet using DID z8ia4e5vAeDsQEE2P26bQqz9oWR1Lxg9qUMaV"
If missing or invalid, exit immediately with error message: "Blocklet DID parameter is required."
Workflow
1. Project Analysis
Skip directories: node_modules/, .pnpm/, .yarn/, .cache/, .turbo/, bower_components/
Verify Web Application Exists
Check for ANY of:
package.jsonwith web-related dependenciesindex.htmlin root,public/, orsrc/or common locations- Web framework config (
vite.config.*,webpack.config.*,next.config.*, etc.)
If none found → EXIT with error message: "No web application detected."
Detect Project Type
Check package.json dependencies for:
- Next.js:
nextin dependencies → Next.js project - Backend frameworks: express, koa, fastify, nest, etc. → EXIT with error: "Only static webapp and next.js projects are supported."
- Otherwise → Static webapp
Extract & Emit Metadata (Early)
Immediately after confirming project type, extract metadata from package.json:
title: Human-friendly project name suitable for public display (e.g.,my-cool-app→My Cool App)description: A clear, non-technical description for end users. If package.json description is too technical, rewrite it to be user-friendly.
Emit using the protocol below, then continue with the workflow:
<<<BLOCKLET_PROJECT>>>
{"title": "...", "description": "..."}
<<<END_BLOCKLET_PROJECT>>>
Build (if build script exists)
bun install && bun run build
If either fails → EXIT with error output.
Locate Output Directory
For Next.js projects: Output directory is always .next — skip detection.
For static webapps: Find index.html in: dist/ → build/ → out/ → public/ → ./, or any other common locations. If not found → EXIT with error message: "No index.html entry point found."
What ships with it
8 files 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.
- 8d ago First seen · 152 lines · 43 tokens per session scan A f2b92567285c
blocklet-converter is a skill published in the GitHub repository ArcBlock/agent-skills (5 stars, last pushed yesterday), licensed MIT. It adds 43 tokens to every session and 1,108 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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