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json-lsp CLAUDE.md

json-lsp CLAUDE.md is an instructions file for coding agents from zircote/json-lsp. It costs 201 tokens per session, scanned A, original, MIT.

A project instruction file for a Claude Code plugin that adds JSON support through a language server, automated checks, and formatting hooks. It documents setup, important files, and coding conventions.

In plain words
What is it for?
Use it when setting up or modifying the JSON language-server configuration, hooks, setup command, plugin metadata, or JSON files.
Why use it?
It gives coding agents the project context and rules needed to change the plugin consistently.

Instructions file

not rated 2 25d ago A scan 201 tokens original MIT
View the source file zircote/json-lsp
Install

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.

agentmods
npx agentmods add instructions/zircote/json-lsp/claude-md
Clone the repo
git clone --depth 1 https://github.com/zircote/json-lsp

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.

agentmods badge for json-lsp CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/zircote/json-lsp/claude-md.svg)](https://agentmods.dev/instructions/zircote/json-lsp/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/zircote/json-lsp/claude-md"><img src="https://agentmods.dev/badge/instructions/zircote/json-lsp/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 201 This file is loaded in full into every session.
When invoked 201 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00201 $0.00201
Opus 5 $0.00101 $0.00101
Sonnet 5 $0.00040 $0.00040
Haiku 4.5 $0.00020 $0.00020

Measured 4d ago against content hash ee0afeaddad0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

json-lsp CLAUDE.md 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 4d 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.

CLAUDE.md · 34 lines

What it actually says

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

A Claude Code plugin providing JSON development support through vscode-json-language-server integration and automated hooks for validation and formatting.

Setup

Run /setup to install all required tools, or manually:

npm install -g vscode-langservers-extracted prettier
brew install jq

Key Files

File Purpose
.lsp.json vscode-json-language-server configuration
hooks/hooks.json Automated development hooks
hooks/scripts/json-hooks.sh Hook dispatcher script
commands/setup.md /setup command definition
.claude-plugin/plugin.json Plugin metadata

Conventions

  • Prefer minimal diffs
  • Keep hooks fast
  • Use 2-space indentation for JSON files
  • Prefer explicit JSON over JSONC comments when possible
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.

  1. 4d ago First seen · 34 lines · 201 tokens per session scan A ee0afeaddad0

Subscribe to this mod's changes

json-lsp CLAUDE.md is an instructions file published in the GitHub repository zircote/json-lsp (2 stars, last pushed 25d ago), licensed MIT. It adds 201 tokens to every session, about $0.0010 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.

claude-code-plugincode-qualityjsonlspschema
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