Borrowing it
Nothing to install: this file belongs to xh/hoist-core. 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/xh/hoist-core/develop/CLAUDE.mdgit clone --depth 1 https://github.com/xh/hoist-coreWrote 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/instructions/xh/hoist-core/claude-md)<a href="https://agentmods.dev/instructions/xh/hoist-core/claude-md"><img src="https://agentmods.dev/badge/instructions/xh/hoist-core/claude-md/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/instructions/xh/hoist-core/claude-md"><img src="https://agentmods.dev/badge/instructions/xh/hoist-core/claude-md.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 | $0.05285 | $0.05285 |
| Opus 5.5 | $0.02114 | $0.02114 |
| Sonnet 5.5 | $0.01057 | $0.01057 |
| Haiku 4.5 | $0.00528 | $0.00528 |
Grade A, and why
hoist-core CLAUDE.md 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 10d 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.
crafting raw `curl` calls to the GitHub API. How it starts
The opening of the file, as written. The whole thing — 419 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to AI coding assistants — including Claude Code, GitHub Copilot, and similar tools — when working with code in this repository.
Project Overview
Hoist-core is the server-side component of the Hoist web application development toolkit, built
by Extremely Heavy Industries (xh.io). Its primary product is a Grails 8 plugin (not a
standalone app) published as io.xh:hoist-core and consumed by Grails application projects. The
repo also publishes two companion artifacts at the same version: hoist-core-test (the test-support/
subproject, Spock test support for apps) and hoist-core-mcp (the mcp/ subproject, an MCP
server for AI agents). The client-side counterpart is
hoist-react.
- Language: Groovy 5 / Java 21
- Framework: Grails 8.0 (Spring Boot 4.1, Hibernate 5, GORM)
- Clustering: Hazelcast 5.7 for distributed caching, pub/sub, and multi-instance coordination
- Package root:
io.xh.hoist
Hoist Developer Tools and Documentation
IMPORTANT: Do not guess at hoist-core APIs, service patterns, or framework conventions. Hoist-core ships a dedicated MCP server that provides structured access to all framework documentation and Groovy/Java symbol information. You MUST use these tools before modifying or extending hoist-core code to understand existing architecture, configuration patterns, and common pitfalls. The feature docs and concept docs are the authoritative reference for how Hoist Core works -- skipping them risks producing code that conflicts with established patterns or misses built-in functionality.
The MCP server is configured via .mcp.json and is very likely already available. Use the
following tools:
hoist-core-search-docs-- Search all docs by keyword (e.g."BaseService lifecycle","authentication OAuth","clustering Hazelcast")hoist-core-list-docs-- List all available documentation, grouped by categoryhoist-core-search-symbols-- Search for Groovy/Java classes, interfaces, traits, enums, and members of key framework classes (e.g."Cache","createTimer")hoist-core-get-symbol-- Get detailed type info for a specific symbol (signature, Groovydoc, inheritance, annotations)hoist-core-get-members-- List all properties and methods of a class or interface
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.
- 10d ago Changed · +17 lines · +195 tokens per session a283724e29f0
- 14d ago Changed · +4 lines · +65 tokens per session f87297c5d53f
- 28d ago Changed 940b9e7c4203
- 1mo ago Changed · +7 lines · +148 tokens per session 1438d1c5bc17
- 2mo ago First seen · 391 lines · 4,877 tokens per session scan A 1a994a495432
hoist-core CLAUDE.md is an instructions file published in the GitHub repository xh/hoist-core (13 stars, last pushed yesterday), licensed Apache-2.0. It adds 5,285 tokens to every session, about $0.0211 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 2026-08-30.
hoist-core CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| hoist-core CLAUDE.mdxh/hoist-core | Instructions file | 13 | yesterday | Apache-2.0 | A | 5,285 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode ai-customization.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 1,907 | GitHub Copilot |