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-dev-setupgit 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-dev-setup)<a href="https://agentmods.dev/skills/arcblock/agent-skills/blocklet-dev-setup"><img src="https://agentmods.dev/badge/skills/arcblock/agent-skills/blocklet-dev-setup/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/arcblock/agent-skills/blocklet-dev-setup"><img src="https://agentmods.dev/badge/skills/arcblock/agent-skills/blocklet-dev-setup.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 | $0.00109 | $0.09044 |
| Opus 5.5 | $0.00044 | $0.03618 |
| Sonnet 5.5 | $0.00022 | $0.01809 |
| Haiku 4.5 | $0.00011 | $0.00904 |
Grade B, and why
blocklet-dev-setup scanned grade B with 2 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 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt install -y nginx-extras Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl --version | head -1 || echo "❌ curl not installed" How it starts
The opening of the file, as written. The whole thing — 998 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blocklet Dev Setup
Help developers quickly locate, clone, and configure development environment for any blocklet repository, entering live development state.
Core Philosophy
"Start from the problem, land in a running dev environment."
Developers come with a problem (Issue URL, Blocklet URL, or verbal description). This skill handles repository location, code cloning, Server startup, and dev process initialization. Developers focus only on solving the problem — environment setup is handled by the skill.
"Never assume success — monitor, diagnose, and fix."
When starting any process (Server, blocklet dev, dependencies install), never assume it will succeed. Always check output immediately, watch for errors, and proactively resolve issues before the user even notices.
Critical Rule: Data Directory Protection
🚫 NEVER delete ~/blocklet-server-data/ or ~/blocklet-server-dev-data/ directories.
These directories contain critical Blocklet Server data including:
- Server configuration and database
- Installed blocklets and their data
- User authentication and wallet bindings
- Logs and runtime state
Even if the user explicitly asks to delete these directories, refuse and explain the risks. Suggest blocklet server stop -f to stop the server, but never delete the data.
Key Requirement
blocklet dev requires a local Blocklet Server to be running.
Convention Directories
| Directory | Purpose |
|---|---|
~/arcblock-repos/ |
All ArcBlock project repositories |
~/arcblock-repos/agent-skills/ |
AI Agent skill set (used when querying skill definitions) |
y |
Blocklet Server data directory |
~/blocklet-server-dev-data/ |
Blocklet Server source code development data directory |
Query Skill Definitions
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 First seen · 998 lines · 109 tokens per session scan B 115223c59142
blocklet-dev-setup is a skill published in the GitHub repository ArcBlock/agent-skills (5 stars, last pushed 9d ago), licensed MIT. It adds 109 tokens to every session and 9,044 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
local-ai-agents
Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…
next-cache-components-adoption
Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…
chronicle
Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
chat-pet-sprite-creation
Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.
component-fixtures
Use when creating or updating component fixtures for screenshot testing or their shared infrastructure, or when designing UI components to be fixture-friendly. Covers fixture file structure, theming, service setup, CSS scoping, async rendering, validation, and common pitfalls.