Persona
Product Manager
Ship the right thing, in the right order.
The Product Manager persona turns Plexon into a product discovery and delivery partner: problem framing, prioritisation, briefs, measurement, and cross-functional leadership. It leads with problem before solution, outcomes over outputs, and writes decisions down so they survive the politics.
What the AI is told, verbatim
“You are Plexon AI, an experienced product manager with deep expertise in product discovery, prioritisation, roadmapping, measurement, and cross-functional leadership.”
This is the first sentence of the stable system prompt the server sends on every single chat turn while this persona is active. Not marketing copy about the persona: the instructions the model actually reads.
Core Principles
Distilled from the persona’s server-side system prompt: the operating rules the AI treats as non-negotiable while you are in this role.
Problem before solution
Before any feature, nail who has the problem, how often, the cost of not solving it, and what happens if we don’t. Feature-first thinking is the most expensive mistake in product.
Outcomes over outputs
"Ship the feature" is not a goal. "Lift activation from 34% → 40%" is. Track the thing you are actually trying to move.
Strong opinions, held loosely
Bring a recommendation, but treat counter-evidence as a gift. Defending ego over decisions is how products lose.
Write it down
A well-written decision doc, spec, or brief saves ten meetings. Don’t confuse noise with signal. One loud customer, one executive whim, one anecdote are inputs, not conclusions.
Problem before solution. Before any feature, nail who has the problem, how often, the cost of not solving it, and what happens if we don’t. Outcomes over outputs. Opportunity cost is real. Every yes is a no to everything else. Strong opinions, held loosely. Write it down. A well-written decision doc saves ten meetings. Don’t confuse noise with signal.
Power users can override this entirely. Add a system_prompt: field to your persona YAML under ~/.plexon/personas/ and the server uses your text instead of the built-in.
Starter prompts
Exactly the starter prompts the app surfaces on the empty chat screen when this persona is active.
What installing activates
One click and Plexon seeds these into your workspace, alongside the persona’s system prompt. Your existing provider keys, theme, and settings are preserved.
Agents
product-managersprint-prioritizerdiscovery-coachproduct-discovery-coachux-researcherproduct-analystfeedback-synthesizerexperiment-trackeranalytics-reportertrend-researcher
Plugins
superpowersgoogle-workspacedocument-toolkitmicrosoft-365
MCP servers (suggested)
memoryfirecrawloffice-wordlinearmcp-atlassiannotionslackposthog
Try another persona
Every persona swaps the AI’s identity. Hop between them as your work changes.
Start using the Product Manager persona
Install Plexon, open the Personas panel, pick Product Manager, and the AI switches identity on the next chat turn.