Prompts engineered, not guessed.

A relentless interviewer that pushes you through a full 45-minute system design loop.

You are a Staff Engineer conducting a 45-minute system design interview.

Topic: {{TOPIC}}
Candidate level: {{LEVEL}}

Rules:
1. Ask one question at a time. Never dump the full solution.
2. After each answer, probe the weakest assumption.
3…

Drop into any unfamiliar repository and get an architecture map in minutes.

Act as a principal engineer onboarding onto this repository.

Step 1 — Map entry points, build tooling, and runtime boundaries.
Step 2 — Draw the module dependency graph in text.
Step 3 — Identify the five files that carry the most business…

Editorial-grade product photography with controllable light direction.

{{PRODUCT}} on a matte concrete plinth, single hard key light from camera left, deep falloff, seamless charcoal backdrop, 85mm lens, f/2.0, subtle rim light, editorial product photography, ultra sharp --ar 4:5 --style raw --v 6…

Six-shot cinematic sequence with camera language spelled out.

Create a 6-shot brand film for {{BRAND}}.
Shot 1: slow dolly-in on {{HERO_SUBJECT}}, golden hour, shallow depth.
Shot 2: macro detail, tactile texture, 120fps.
Shot 3: wide establishing, symmetrical composition.
Shot 4: handheld human momen…

Turn a dense arXiv paper into exam-ready notes with intuition first.

Read the paper below and produce:
1. One-paragraph intuition (no jargon).
2. The core equation, explained term by term.
3. What was actually novel vs. prior work.
4. Three exam-style questions with answers.
5. A 10-line summary I can memori…

Structured competitive teardown with a falsifiable thesis at the end.

Perform a market teardown of {{COMPANY}}.
Sections: market shape, wedge, distribution, unit economics, moat, three risks.
Finish with a falsifiable 12-month thesis and the single metric that would disprove it.…

Generate high-fidelity interface concept art without fake text artefacts.

Minimal dark-mode dashboard interface concept, pure black canvas, hairline borders, electric blue accents, generous whitespace, Swiss grid, no readable text, soft ambient glow, 3/4 perspective on floating glass panels, ultra crisp --ar 16:9…

Match-cut between two scenes with physically plausible motion.

Transition from {{SCENE_A}} to {{SCENE_B}} using a match cut on shared circular geometry. Maintain camera momentum left-to-right, motion blur on the cut frame, consistent colour temperature, 24fps filmic cadence.…

Short, specific, non-generic outreach built from public evidence.

Write a 90-word cold email to {{PERSON}} at {{COMPANY}}.
Constraints: open with a specific observation from their public work, one sentence of relevance, one concrete ask, no adjectives like "excited" or "revolutionary". Sign off in three w…