LaunchDarkly Local MCP Server: Setup for Claude, Cursor and Other Apps

• Lists your feature flags

  Lists the feature flags in a project.

  Try: “List the feature flags in my web project.”

  Network · list-feature-flags

• Shows one flag

  Gets the details of a feature flag.

  Try: “Show me the new-checkout flag.”

  Network · get-feature-flag

• Shows a flag's status in each environment

  Returns the status of a flag across environments.

  Try: “Is new-checkout on in production and staging?”

  Network · get-flag-status-across-environments

• Creates a feature flag

  Creates a new feature flag.

  Try: “Create a boolean flag called dark-mode.”

  Write · create-feature-flag

• Updates a flag

  Changes a flag, for example to turn it on or off or to edit its targeting.

  Try: “Turn on dark-mode for 10 percent of users in staging.”

  Write · update-feature-flag

• Deletes a flag

  Deletes a feature flag.

  Try: “Delete the old-banner flag.”

  Delete · delete-feature-flag

• Lists the environments in a project

  Lists the environments of a project.

  Try: “What environments does my web project have?”

  Network · get-environments

• Shows recent changes in the audit log

  Lists audit log entries.

  Try: “Who changed flags this week?”

  Network · get-audit-log-entries

• Lists repositories with flag references

  Lists the code repositories that reference your flags.

  Try: “Which repos use LaunchDarkly flags?”

  Network · get-code-references

• Lists experiments

  Gets the experiments in a project.

  Try: “List my running experiments.”

  Network · list-experiments

• Lists experiments in every environment

  Gets experiments across any environment.

  Try: “List experiments in all environments.”

  Network · list-experiments-any-environment

• Shows one experiment

  Gets one experiment.

  Try: “Show the checkout experiment.”

  Network · get-experiment

• Creates an experiment

  Creates a new experiment.

  Try: “Create an experiment on the new-checkout flag.”

  Write · create-experiment

• Updates an experiment

  Patches an experiment.

  Try: “Rename that experiment.”

  Write · update-experiment

• Starts a new experiment iteration

  Creates an iteration. The README marks this deprecated.

  Try: “Create a new iteration.”

  Write · create-experiment-iteration

• Lists metrics

  Lists the metrics in a project.

  Try: “List my conversion metrics.”

  Network · list-metrics

• Shows one metric

  Gets one metric.

  Try: “Show the signup metric.”

  Network · get-metric

• Creates a metric

  Creates a new metric.

  Try: “Create a metric for completed checkouts.”

  Write · create-metric

• Updates a metric

  Updates an existing metric.

  Try: “Rename the signup metric.”

  Write · update-metric

• Lists AI Configs

  Lists AI Configs in a project.

  Try: “List my AI Configs.”

  Network · list-ai-configs

• Shows one AI Config

  Gets an AI Config.

  Try: “Show the support-bot AI Config.”

  Network · get-ai-config

• Creates an AI Config

  Creates a new AI Config.

  Try: “Create an AI Config for the summary bot.”

  Write · create-ai-config

• Updates an AI Config

  Updates an AI Config.

  Try: “Update the description of that AI Config.”

  Write · update-ai-config

• Deletes an AI Config

  Deletes an AI Config.

  Try: “Delete the test AI Config.”

  Delete · delete-ai-config

• Shows who gets which AI Config

  Shows an AI Config's targeting.

  Try: “Who is targeted by the support-bot config?”

  Network · get-ai-config-targeting

• Changes AI Config targeting

  Updates an AI Config's targeting.

  Try: “Send 20 percent of users to variation B.”

  Write · update-ai-config-targeting

• Shows one variation

  Gets an AI Config variation.

  Try: “Show variation B.”

  Network · get-ai-config-variation

• Adds a variation

  Creates an AI Config variation.

  Try: “Add a new variation with a shorter prompt.”

  Write · create-ai-config-variation

• Edits a variation

  Updates an AI Config variation.

  Try: “Change the model in variation B.”

  Write · update-ai-config-variation

• Deletes a variation

  Deletes an AI Config variation.

  Try: “Delete variation C.”

  Delete · delete-ai-config-variation

Watch out for

• It can delete flags and AI Configs

  Delete tools remove flags, AI Configs and their variations. Start the server with `--scope read`, or use a reader token, if you only want to look.

• A flag update can change what real users see

  Updating a flag or its targeting can turn features on or off in production. Ask for a review of the change before you approve it.

• The token sits in your config file

  The README puts the API key in the command arguments. Keep the file private, or load it from an environment variable where your app supports that.

• Use a patched Node.js version

  The README lists minimum Node.js versions, 22.23.4, 24.22.1 or 26.12.1, to protect the connection to LaunchDarkly.

Security advisories