All comparisons

Scalar vs. Leed

Scalar earns its fans: an open-source, OpenAPI-native reference that renders beautifully, ships a real API client and playground, and stays fast. If your job is turning a spec into a stunning interactive reference, it's excellent. But that's where it stops — Scalar is centered on the API reference, not the guides and product docs around it, and not on turning readers into pipeline. Leed covers the whole product, is free to start with unlimited users, and adds reader-level analytics and lead capture Scalar has at no tier.

Choose Scalar if

You want a beautiful, modern, open-source interactive API reference and client for your OpenAPI spec — with a playground developers actually enjoy, free to self-host.

Choose Leed if

Your docs are the whole product — and a growth channel — guides and product docs around the spec, reader-level analytics, lead capture, and nurturing, free to start with unlimited users and no per-seat bill.

Feature by feature

Where the platforms diverge.

Leed
Scalar
Docs & authoring
Free tier to start publishing
Unlimited users — no per-seat pricing
Basic
AI-powered authoring
Real-time collaborative editing
Scheduled page publishing
AI agents & MCP
Docs MCP — serve your docs to AI agents
Operator MCP — manage docs with your own Claude
MCP tool-call analytics — what agents ask your docs
WebMCP — in-browser agent tools
A2A AgentCard — agent discovery
The growth engine — a category of one
Native lead capture & nurturing in docs
Closed per-reader funnel (full consumption view)
Reader-level analytics (scroll depth, identity)
Auto release notes from Jira, GitHub & more
Multi-channel + social distribution
Beyond docs — your whole site
Built-in recommendation engine
Site-wide auto-linking to canonical pages
Streaming media hosting + auto-transcription
Video, audio & menu engagement analytics
No-loss attribution with hidden UTMs
The difference

The growth engine Scalar leaves outside the reference.

01

The whole product, not just the reference

Scalar renders your OpenAPI spec into a beautiful interactive reference and client. But most of what readers need lives outside the spec — getting-started guides, tutorials, concepts, product docs, release notes. Leed covers all of it in one place, free to start with unlimited users, so the reference isn't the whole story.

02

Analytics that name the reader

Scalar's dashboard reports usage for billing, not who read what. Leed's scroll-depth and click tracking is tied to reader identity — you see which accounts read which pages, not just an aggregate count against a gorgeous reference and playground.

03

Docs that capture pipeline instead of ending at the reader

Scalar's experience ends when the reader closes the tab. Leed adds native lead capture, a closed per-reader consumption funnel, and nurturing — so engaged readers become identified, tracked pipeline. Capture is free; you pay only when you're ready to act, never per seat and never on traffic.

Start free. See what your docs are worth.

Bring your existing docs — unlimited users, your own domain, no card. Capture leads free; pay only when you're ready to email and nurture them.