What is LightWeightChartsMCP AGENTS.md?

Project instructions for LightWeightChartsMCP, a server that lets coding agents search reference material for TradingView Lightweight Charts, a JavaScript charting library.

Use them when installing, building, running, indexing, linting, testing, or understanding the architecture of LightWeightChartsMCP.

They give agents the project's setup, build, run, lint, and test commands so work follows the repository's actual procedures.

LightWeightChartsMCP AGENTS.md — Instructions file by TheFractalyst

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/thefractalyst/lightweightchartsmcp/agents-md

Clone the repo

git clone --depth 1 https://github.com/TheFractalyst/LightWeightChartsMCP

Made for: Codex, OpenCode.

Per session 642 This file is loaded in full into every session.

When invoked 642 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.

Model	Per session	Once invoked
Fable 5	$0.00642	$0.00642
Opus 5	$0.00321	$0.00321
Sonnet 5	$0.00128	$0.00128
Haiku 4.5	$0.00064	$0.00064

Measured 2d ago against content hash 299a77af6d89, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

LightWeightChartsMCP AGENTS.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 2d 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.

AGENTS.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

LightWeightChartsMCP - Agent Instructions

Overview

TradingView Lightweight Charts reference documentation MCP server with ~730 entries covering all 5 versions (3.8, 4.0, 4.1, 4.2, 5.0) plus tutorials and framework integrations.

Commands

Setup

pip install -e ".[dev]"

Build database (auto-builds on first run, or manually)

lwcmcp build

Run server

lwcmcp                                 # stdio (default)
lwcmcp --transport sse --port 8080     # SSE (HTTP)

Index database from pipeline

python pipeline/merge_and_index.py --reset

Lint

ruff check . --line-length 120

Test

pytest tests/ -v

Architecture

FastMCP 3.4 with FileSystemProvider for auto-discovery
ChromaDB vector store (cosine, all-MiniLM-L6-v2, 384-dim)
3 composable lifespans: db | model | cache
Circuit breaker on validator and ChromaDB
Hot cache for fast lookups
Response capping at 80KB
Error masking (no internal details leaked)
Regex-based JS/TS validator (no Node.js runtime required)

Tools (6)

+--------------+-----------+------------------------------------------+
| Tool         | Type      | Description                              |
+--------------+-----------+------------------------------------------+
| lwc_lookup   | read-only | Exact name lookup with fuzzy fallback    |
| lwc_search   | read-only | Semantic search across all entries       |
| lwc_browse   | read-only | List namespace members                   |
| lwc_validate | read-write| Validate JS/TS for Lightweight Charts    |
| lwc_repair   | read-write| Fix common Lightweight Charts issues     |
| lwc_scaffold | read-write| Generate chart template (7 kinds)        |
+--------------+-----------+------------------------------------------+

Data Pipeline

pipeline/scrape_lwc.py - Direct HTTP scraper for Lightweight Charts docs (github.io)
pipeline/merge_and_index.py - Merge + index into ChromaDB

Read the full file on GitHub · 78 lines

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.

2d ago First seen · 78 lines · 642 tokens per session scan A 299a77af6d89

Subscribe to this mod's changes

LightWeightChartsMCP AGENTS.md is an instructions file published in the GitHub repository TheFractalyst/LightWeightChartsMCP (2 stars, last pushed 1mo ago), licensed MIT. It adds 642 tokens to every session, about $0.0032 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.

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

LightWeightChartsMCP AGENTS.md