langflow-components

Coding rules for creating custom Langflow components, which are reusable building blocks in visual AI workflows. They describe the required class, input, and output structure.

In plain words
What is it for?
Use them when implementing or reviewing Python components for the Langflow factory project.
Why use it?
They reduce mistakes when adding components that need to work correctly inside Langflow.

Cursor rule for Cursor

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 rules/empreiteiro/langflow-factory/langflow-components
Clone the repo
git clone --depth 1 https://github.com/Empreiteiro/langflow-factory

Made for: Cursor.

Per session 1,974 This file is loaded in full into every session.
When invoked 1,974 The same file — it is already loaded in full.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.01974 $0.01974
Opus 5 $0.00987 $0.00987
Sonnet 5 $0.00395 $0.00395
Haiku 4.5 $0.00197 $0.00197

Measured 2d ago against content hash bfee865d081d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

langflow-components 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 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

response = requests.post(
.cursor/rules/langflow-components.mdc · 289 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 289 lines · 1,974 tokens per session scan A bfee865d081d

Subscribe to this mod's changes

langflow-components is a cursor rule published in the GitHub repository Empreiteiro/langflow-factory (64 stars, last pushed 6d ago), with no licence file. It adds 1,974 tokens to every session, about $0.0099 per session on Opus 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.