leanplugins.dev

$ curl leanplugins.dev

One function. One price. No subscription.

Small, sharp tools for developers and the agents they build. Send your data in, get a result out, pay for the call. Every plugin is extracted from a stack that runs every day — not from a pitch deck.

Browse the shelf llms.txt for agents

On the shelf

Finance & Trading

Market structure and backtests on the candles you bring.

coming soon

SMC Structure Detector

OHLC candles in, market structure out: swing highs and lows, breaks of structure and changes of character, fair value gaps, order blocks and resting liquidity — as JSON, for any symbol and timeframe you bring.

POST /smc/structure
{ "candles": [[t, o, h, l, c], …],
  "detail": "summary" }

planned

Backtest in R

Your entries, stops and targets on your candles, minute by minute. Results in R multiples: profit factor, expectancy, max drawdown, R distribution.

Data & Marketing

What AI crawlers and search bots see on your site, and what they actually do there.

live

Data Detective

GEO audits that show what AI crawlers see on a web page: robots.txt, server response and readable text per crawler.

datadetective.app →

planned

Log File Analyzer

Your access log in, a bot report out: which AI crawlers and search bots come, how often, and where they hit 403s and rate limits. Processed in memory; IP addresses are never returned.

Utility & Security

Small jobs every agent pipeline needs, done once and done right.

planned

Page to Markdown

A URL or HTML in, clean Markdown out: no navigation, scripts or ads, so your agent spends its context on content. Optional rendering for single-page apps. Respects robots.txt.

exploring

Prompt Injection Guard

Untrusted text in, a risk score and findings out: hidden instructions, injected commands and data leaks, flagged before the text reaches your model. Your agent decides what to do with it.

How it works

  1. Call the endpoint. Plain HTTPS, JSON in, JSON out. No SDK, no dashboard.
  2. No key? You get the price. Paid endpoints answer 402 Payment Required with what the call costs.
  3. Pay per call. API keys during the beta (ask for early access); agent-native payments (x402, USDC) are on the roadmap.
  4. Keep your data. You bring the candles, logs or pages. We compute and return; we don't resell your data.

Principles

Analytics, not advice

The trading tools describe the data you send. They don't tell you what to trade: no signals, no recommendations, no financial advice.

One thing, done well

A plugin is one function with one price. If it needs a manual, it's two plugins.

Honest numbers

Results report what's there, including what you hoped not to see. A profit factor below 1 is a result, too; so is a page that AI crawlers can't read.