KingPrompt review
Prompt builder and template directory for developers working with frontier models
By Noahlast updated
KingPrompt screenshots & video
What is KingPrompt?
KingPrompt is a prompt engineering workbench and directory at kingprom.pt. It provides template customization, a modular Studio builder with system persona, constraints, few-shot examples, and context stack sections, an AGENTS.md optimizer, a catalog of Cursor-native SKILL.md workflows, and a directory of models and AI tools with token and use-case notes.
KingPrompt is a web-based prompt engineering workbench with Express and Studio modes for building structured prompts. It includes 23 preset templates for coding, refactoring, debugging, documentation, system prompts, and voice agents, plus model-specific syntax profiles for Claude, GPT, Gemini, DeepSeek, Grok, and Llama. It also hosts a searchable directory of frontier models, agents, and developer tools, with a browser-based vault for saved prompts.
Standout feature: Compiles structured inputs into model-specific syntax with token count and per-model cost preview
Biggest weakness: Saved prompts live only in browser LocalStorage, so there is no account sync or backup across devices, and free directory listing requires adding a dofollow badge to the submitter site footer.
KingPrompt: pros and cons
Pros
- Express and Studio modes cover quick templates and structured builds with persona, constraints, and few-shot examples
- Model-specific syntax profiles for Claude, GPT, Gemini, Grok, DeepSeek, and Llama
- Built-in AGENTS.md optimizer and catalog of 77 Cursor-native skills
- Core workbench is usable without payment and exports to markdown
Cons
- No dedicated pricing or docs page found, only directory submission terms
- Vault has no cloud sync, clearing browser data removes saved prompts
- Free directory submission is gated on manual review and a mandatory footer badge
KingPrompt pricing
Free tier · paid from $19 one-time
| Plan | Price | Notes |
|---|---|---|
| Community | Free | |
| Platform Contributor | $19 once |
What reviewers say
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