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Run this skill to migrate from PostHog to Confidence: 
npx skills add spotify/confidence-ai-plugins --skill migrate-posthog
The installer works with Claude Code, Cursor, Codex, Gemini CLI, and other AI assistants, and asks which one to install to. You can also install the full Confidence plugin with your assistant’s own plugin manager. The kit moves your feature flags and multivariate flags to Confidence, then rewrites your application code from the PostHog SDK to the Confidence SDK. See the migrations overview for how migration kits work.

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Before You Begin

To run this migration kit, you need:
  • The Confidence plugin installed in your AI assistant
  • The PostHog MCP server, authenticated with your PostHog account. For example, in Claude Code: 
    claude mcp add posthog --transport http --url "https://mcp-eu.posthog.com/mcp"
  • The Confidence Flags MCP server, authenticated with your account
  • The Confidence Documentation MCP server, used during code transformation

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Run the Migration

Invoke the kit with the /confidence:migrate-posthog command in your AI assistant.
1

Plan the flag migration

Run /confidence:migrate-posthog plan flag. The kit scans your PostHog feature flags, asks you to choose a Confidence client and entity, and writes a migration plan file.
2

Review the plan

The plan lists every flag with its targeting conditions and rollout percentages, and marks anything that can’t migrate automatically. Plan files are resumable, so you can pause and continue later.
3

Execute the flag migration

Run /confidence:migrate-posthog execute <plan-file>. The kit recreates each flag in Confidence with its targeting rules intact.
4

Plan and execute the code migration

Run /confidence:migrate-posthog plan code, review the plan, then execute it. If your app already uses OpenFeature, the kit swaps the registered provider and leaves call sites unchanged. Otherwise it rewrites each PostHog SDK call to the Confidence SDK, creating one pull request per flag.

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What Gets Migrated

PostHogConfidence
Feature flagFlag with matching targeting rules
Multivariate flagVariant assignments within a single rule, with percentage splits
distinct_id bucketingEntity field of your choice, such as user_id
Group-based bucketingGroup entity reference
Targeting conditionsCriteria and expression rules
Rollout percentageRollout percentage on the targeting rule

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Known Limitations

The kit flags these PostHog features for manual review because Confidence doesn’t support them:
  • The icontains substring operator
  • The is_not_set condition
  • Cohort targeting

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Analyze Historical Experiments

The migration kit moves your flags and code, not your historical experiment results. To re-analyze experiments that ran on PostHog, import their assignment data into your data warehouse and follow the Analyze a Past Experiment quickstart.

Migrations Overview

How migration kits work and how to install the plugin

Use AI with Confidence

Set up the Confidence MCP servers for your AI assistant

Analyze a Past Experiment

Re-analyze experiments that ran on another platform

SDK Integration

Integrate Confidence SDKs into your application