From the archive · Monday, September 7, 2026

PostHog AI (Max), Hex Notebook Agent & three more new AI tools

A real past issue of Signal Brief — read the first 3 of 5 tools now, no email, no card.

Signal Brief

Five AI tools to answer your own data questions, run research on autopilot, and mine org knowledge — no analyst or researcher required.

1.

PostHog AI (Max)

An AI copilot inside PostHog that answers plain-English questions and builds dashboards, surveys, alerts, and feature flags from your product data.

Why it matters for PMs: Eliminates the analytics bottleneck — validate feature hypotheses and spin up experiments yourself instead of queuing tickets for the data team.

posthog.com
2.

Hex Notebook Agent

Hex's new agentic notebook writes SQL, builds charts, and chains multi-step analyses from natural-language prompts, with reviewable cell-by-cell diffs.

Why it matters for PMs: Turns roadmap questions into shareable, decision-ready analyses in minutes — and outputs become interactive data apps stakeholders can explore themselves.

hex.tech
3.

Marvin

An AI-native customer insights platform that runs AI-moderated interviews, synthesizes findings, and serves cited answers from a central research repository.

Why it matters for PMs: Grounds prioritization debates in evidence — query every past interview and support ticket for cited answers before committing your next quarter.

heymarvin.com

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