LaunchDarkly

At a glance

Set these per environment. See Connect an integration.

Variable	Required	Description
`LAUNCHDARKLY_API_TOKEN`	Yes	LaunchDarkly personal or service access token (sent raw in the Authorization header, no prefix) Docs.

Sign in to LaunchDarkly: Use an existing account or start a trial at https://app.launchdarkly.com. A project with a couple of test flags is enough to exercise all tools.
Create an access token: Go to Organization settings → Authorization (https://app.launchdarkly.com/settings/authorization) and create a personal or service access token. A Reader role token is enough for the read tools; toggling flags needs Writer access to the relevant projects.
Set the environment variable: Add the token to your .env as LAUNCHDARKLY_API_TOKEN=…
Verify access: Run List Projects, then List Feature Flags with a project key.

The Authorization header contains the raw token with no Bearer prefix
Toggle Feature Flag uses LaunchDarkly’s semantic patch format: Content-Type ‘application/json; domain-model=launchdarkly.semanticpatch’ with an instructions array
EU and Federal instances use different hosts (app.eu.launchdarkly.com, app.launchdarkly.us); these tools target the commercial instance at app.launchdarkly.com

Tool	Access	Description
List Projects	Read	List projects in the LaunchDarkly account
List Feature Flags	Read	List feature flags in a project, optionally scoped to one environment
Get Feature Flag	Read	Get a feature flag including its variations and per-environment configuration
List Environments	Read	List environments in a LaunchDarkly project
Toggle Feature Flag	Write	Turn a feature flag on or off in one environment using a semantic patch instruction

List the feature flags in my LaunchDarkly project and group them by whether they are archived or tagged as temporary.
Get my LaunchDarkly flag and tell me whether it is on in production and what the default variation is.