The short version
x402 Bazaar Search
By Coinbase
Browse a marketplace of pay-per-use APIs for everything from weather to sentiment analysis.
Prompt Master
By Nidhin JS
Turn a rough idea into a ready-to-paste prompt tuned for the AI tool you're using.
What each one does
x402 Bazaar Search
- Searches a marketplace of paid APIs by keyword (e.g. 'weather', 'sentiment analysis')
- Browses all available services and shows pricing information
- Checks what an API costs and what payment methods it accepts
- Filters results by price, network, or payment type
- Displays service details including input/output schemas
Prompt Master
- Writes a single copy-and-paste prompt tailored to a named AI tool
- Fixes or tightens a prompt you already wrote
- Adapts a prompt that worked in one tool so it works in another
- Covers chat, image, video, voice, research, and automation tools
- Asks no more than three questions when key details are missing
When to pick each one
Reach for x402 Bazaar Search when…
- You need an external service (weather data, analytics, specialized APIs) but don't know what's available
- You're exploring what paid APIs exist for a specific task
- You want to see pricing for a service before deciding to use it
- You're looking for a fallback solution when standard tools don't cover your needs
Reach for Prompt Master when…
- You need a Midjourney or image prompt and keep getting the wrong look
- Your ChatGPT or Claude prompt gives vague results and you want it sharper
- You're asking an AI website builder or agent to build something and want it right first time
- You want to reuse a good prompt in a different AI tool
Quick facts
| x402 Bazaar Search | Prompt Master | |
|---|---|---|
| Made by | Coinbase | Nidhin JS |
| Category | AI Tools | AI Tools |
| Source | View ↗ | View ↗ |
| Detail page | Open | Open |