IonBin

Run an A/B test with an AI pair

Business data & reporting · Dev, web & IT · checked 2026-10-16

Your AI platform proposes a test, a coding agent implements it behind a PostHog feature flag, and PostHog reports results through its MCP server when the test ends.

Independent review. IonBin has no partnership with any tool on this page and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.

Goal

Run more experiments with less setup.

Connects through: MCP

Steps

#WhoWhat happensHowStatus
1Your AI platform Proposes a hypothesis and variants AI platform Confirmed
2PostHog Creates the feature flag or experiment
PostHog’s MCP tools include create-feature-flag, experiment-create and experiment-end.
 MCP Confirmed · source ↗
3Your coding agent Implements the variant in code AI platform Confirmed
4You Review the code and approve the rollout Human step Confirmed
5PostHog Reports results MCP Confirmed · source ↗

Confirmed means the vendor documents it (linked). It doesn't mean IonBin has tested it. AI-platform and human steps need no source.

Human approval

You approve the rollout and call the result.

Watch out for

Keep the human approval step: You approve the rollout and call the result.

Starter prompt

Goal: Run more experiments with less setup. Tools involved: PostHog. Your part: proposes a hypothesis and variants; creates the feature flag or experiment; implements the variant in code. Work step by step, show me each draft or proposed change, and wait for my approval before anything is sent, published, signed, filed or changed in a live system.

Assembled from this page’s goal and steps. Paste it into your AI platform and adjust it to your situation.

Tools in this workflow

ToolRoleOfficial site
PostHogMCP posthog.com ↗

Which AI platforms can run it

PlatformStatusWhy
Claude (incl. Claude Code) Confirmed Every MCP and API step is documented for this platform.
OpenAI Codex Confirmed Every MCP and API step is documented for this platform.
Google Antigravity To verify PostHog: pairing not named in vendor docs; PostHog: pairing not named in vendor docs
ChatGPT To verify PostHog: pairing not named in vendor docs; PostHog: pairing not named in vendor docs
Gemini To verify PostHog: pairing not named in vendor docs; PostHog: pairing not named in vendor docs
Perplexity To verify PostHog: pairing not named in vendor docs; PostHog: pairing not named in vendor docs

Computed from the MCP and API steps only: "Confirmed" needs the tool's docs to name the platform and the platform to support the connection. Browser, upload and human steps work from any platform.

What we checked

PostHog’s MCP tools reference lists feature-flag tools (create, enable, disable) and experiment tools (create, create from a prompt, calculate running time, end). So the AI can set up the flag and experiment, and read results when the test ends. Your coding agent implements the variant behind the flag. You review the code, approve the rollout, and call the result.

Set it up

  1. Connect PostHog’s MCP server in the AI client you use for planning, and in your coding agent.
  2. Ask for a hypothesis, the primary metric and the variants. Use PostHog’s running-time tool to estimate how long the test needs.
  3. Create the flag and experiment, implement the variant behind the flag, and review the code before rollout.
  4. When the test ends, read the results and decide whether to ship, iterate or stop.

PostHog’s MCP server is free to connect; AI-powered tools may bill as PostHog AI spend.

Sources

No affiliate links on this page. No paid placements in workflows. How IonBin makes money.