413 endpoints. 36 domains. Structured references that Claude reads on demand — no hallucination, no guessing, no looking it up yourself.
Free tier includes 22 endpoints across Contacts, Opportunities & Auth
From setup to your first API call
Clone the repo and run the setup script. Claude Code gets the full HL API reference system — 413 endpoints ready to query.
Set up a Private Integration Token or create an OAuth Marketplace app. We walk you through every step with screenshots.
"Upsert a contact." "Book an appointment." "Search opportunities." Claude finds the exact endpoint, parameters, and examples instantly.
Correct API calls on the first try. No hallucination, no debugging wrong endpoints, no wasted time reading docs.
There's a reason Claude finds the right endpoint every time
Claude doesn't load 400 endpoints into context. Our proprietary reference architecture means it finds exactly the endpoint it needs — instantly, every time, with zero wasted tokens.
Every endpoint is documented with the exact method, path, parameters, realistic request/response examples, error codes, and gotchas we've learned the hard way. Claude reads facts, not guesses.
One folder, one setup. Install the free tier in seconds. When you upgrade, the new domains plug right in — no reconfiguration, no conflicts. It just works.
Guardrails that prevent costly mistakes before they happen — from destructive commands to missing API headers
Blocks rm -rf, git reset --hard, DROP TABLE, and other commands that can't be undone.
Blocks force pushes and direct pushes to main or master branches.
Scans for API keys, tokens, and passwords before they get written to files.
Reminds developers to read a file before editing it, preventing blind changes.
Catches HL API calls missing the required Version: 2021-07-28 header.
Blocks writes to .env, .env.local, and .env.production files.
Detects bulk API operations and warns about the 100 req/10s HL rate limit.
Suggests /contacts/upsert over /contacts/ create to prevent duplicates.
Warns when HL API calls are missing the required locationId parameter.
413 endpoints across every major HighLevel domain
Three types of builders who need the full HL API at their fingertips
Building custom integrations for HL sub-accounts. You need every endpoint at your fingertips.
Creating marketplace apps or white-label tools on top of HighLevel. The OAuth guide alone is worth it.
Using Claude Code to build faster. Give your AI the complete API reference so it stops guessing.
Pay once. Use forever. Upgrade when you need more.
No credit card required
One-time purchase · Lifetime access
One-time purchase · Requires Pro · Lifetime access
All sales are final — no refunds on digital products. Terms of Service
No subscriptions. No recurring fees. Structured references that keep getting better.
Pull the latest from GitHub. As HL releases new API versions, the references get updated.
Found a missing endpoint or a gotcha? PRs welcome. The skill system improves from real usage.
It's markdown files in a folder. No SaaS subscription, no vendor lock-in. You own it.
Start with 22 free endpoints. Upgrade when you need more.