Agent Orchestra, the Tool Builder, AI Eval, a streaming AI Help chat, and the full prompt-engineering knowledge base. The free single-prompt composer lives at prompt.phbeks.com.
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Prompt Composer Pro is a professional-grade prompt engineering toolkit for developers and teams building production AI applications. Compose multi-agent workflows, budget your context window, build and validate tool definitions, run AI evals, and browse the full prompt engineering knowledge base — all in one place.
Compose orchestrator/worker, sequential, parallel, debate, or handoff multi-agent patterns. Export runnable Python or TypeScript scaffolding.
Budget the context window like RAM: per-source allocation, eviction triggers, compaction, and handoff rules. Export a spec or code scaffold.
Build and validate Anthropic, OpenAI, and Gemini function-calling tool definitions with strict-mode JSON schemas. Export ready-to-use JSON.
Spellcheck, rewrite, code-check, or score any prompt against a rubric using your own API key. Supports Claude, GPT-4, and Gemini.
A streaming chat helpdesk that knows this app and prompt engineering deeply. Answers cite their sources, powered by your own API key.
Foundations, single-prompt techniques, orchestration patterns, escalation rules, and primary sources — the written field guide to prompt engineering.