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Lantern

Developers: what changed

API changes, breaking changes and upgrade notes.

4 of 4 releases have notes for this audience. Atom feed · JSON Feed

2026

2.1.0: Templates

Start a board from a template, and save your own.

Added

  • POST /v1/boards accepts template_id. GET /v1/templates lists the built-in and workspace templates.

2.0.1

Fixes workspace invites that went to the wrong email address.

Fixed

  • POST /v1/workspaces/{id}/members used a cached recipient for requests sent within the same second. Fixed; no API change.

2.0.0: Workspaces

Group boards into workspaces with their own members and billing. API v1 routes marked deprecated are removed.

Breaking

  • Removed GET /v1/cards?board= (deprecated since 1.3.0). Use GET /v1/boards/{id}/cards.
  • Tokens are now scoped to a workspace. Existing tokens keep working and are attached to your personal workspace.

Added

  • workspaces resource and workspace_id on boards.

Upgrade check for scripts that list cards:

// before (removed)
fetch("/v1/cards?board=" + id)
// after
fetch(`/v1/boards/${id}/cards?limit=250`)

1.5.1

A security fix for card links shared outside a board. Update recommended.

Security

  • Share tokens are 128-bit random values. Old 48-bit share links keep working for 14 days, then stop.