Promptles is a scenario-based game for GTM engineers, PMs, designers, and enthusiasts shipping with AI agents — anyone who prompts Claude Code, Cursor, Replit Agents, or similar tools without a traditional software engineering background. You're handed real engineering tickets — debugging stack traces, refactoring across files, designing auth flows — and write the prompt you'd actually send. Each prompt is graded by Claude on the criteria a senior engineer would care about, and the expert prompt sits next to yours so you can read the gap.

Does Promptles use Claude?

Yes. Every prompt you write is graded by Claude Haiku 4.5, against a mix of deterministic pattern checks and AI-evaluated criteria. The Anthropic API is called server-side; players never need their own API key.

Do I need an Anthropic API key?

No. Promptles handles all AI calls server-side. Sign in once with your email and start playing — there's no key to paste, no provider to configure.

Is there a free tier?

Yes. The free tier includes the foundational scenarios, today's daily challenge, and pattern-based grading. Paid tiers (Solo, Lifetime, Team) add full AI grading, every scenario, and the daily archive.

How is Promptles different from other prompt engineering tutorials?

Most prompting tutorials teach you to write a single perfect prompt. Promptles grades multi-turn conversations: you write a prompt, see what Claude actually replies, then write the follow-up that fixes what's still wrong. The whole chain is graded, because that's what real software engineering work looks like.

Is Promptles useful for GTM engineers?

Yes — GTM engineers are a core audience. Building sales, marketing, and RevOps automation, internal tools, integrations, and AI agents means writing a lot of prompts to Claude Code, Cursor, Replit Agents, and similar tools. Promptles teaches the prompting rigor that gets reliable output the first time, so the integrations and agents you ship don't break the next morning. The vocabulary deck includes a dedicated GTM & Business Tools section covering the SaaS platforms, data models, and business concepts you'll be automating.

Can my team use Promptles?

Yes. The Team plan adds per-seat AI quotas and lets admins author custom scenarios for the team's codebase using AI assistance. Each member keeps their own progress and playbook; team-authored content shows up alongside the core library.

Context

Scope the Query

Filter the search; don't pull your whole inbox or database.

Inboxes and databases are huge. Don't ask the agent to read everything and sort it out, it will paginate forever or summarize the wrong things. Hand it the search instead: the filters, operators, date range, sender, label, or status that narrows thousands of items down to the handful you actually mean. A precise query means the agent reads real, relevant data instead of drowning in the whole archive.

Where you'll practice this

2 Promptles scenarios teach this principle directly. Each one drops you into a real engineering ticket and asks you to write the prompt you'd send to Claude Code.

Search, Don't Scrape Your Inbox
Your Gmail MCP server is connected. A teammate tried 'read my email and tell me what's important' and Claude started pulling thousands of messages, paginated for a long time, and handed back a summary dominated by newsletters and receipts. What you actually need is small and…
Filter the Database
Your Notion MCP server is connected, and your team's Projects database has about 600 rows going back three years. You asked 'which projects are at risk?' and Claude read the entire database, ran long, and mixed archived and finished projects into the answer. You don't want all…

Scope the Query

Where you'll practice this

Search, Don't Scrape Your Inbox

Filter the Database

Other principles in Context

Declare the Tools You Need

Describe Before You Prescribe

Describe the Data Shape

Explain the Integration Point

Keep Memory Reusable

Map to Real Components