Overview
pumaDB is a hosted memory service for AI agents. It provides a simple MCP (Model Context Protocol) server and REST API so agents can store and retrieve JSON records—preferences, project context, task state, and more—without setting up a database or vector store. It's designed for developers who want durable, reviewable memory with minimal setup.
Chrome Goldmine is a curated research database of 9,656 expired Chrome extensions. It includes revenue estimates, rebuild difficulty scores, competitor analysis, and a step-by-step action plan. Delivered as an interactive Notion database plus CSV export, it's a one-time purchase aimed at indie hackers and solo founders looking for profitable rebuild opportunities.
Feature Comparison
| Feature | pumaDB | Chrome Goldmine |
|---|---|---|
| Primary Purpose | Durable memory storage for AI agents | Curated database of expired Chrome extensions |
| Target Audience | AI developers, agent builders | Indie hackers, solo SaaS founders, vibe coders |
| Core Offering | Hosted MCP server + REST API | Notion database + CSV of 9,656 extensions |
| Setup Complexity | Minimal – add MCP server URL or use API key | Instant download via Gumroad |
| Data Storage | 20 tables, 1,000 rows/table, 25 MB total | Static dataset in Notion + CSV |
| Pricing Model | Free tier with limits; paid plans likely | One-time payment $23.20 |
| Updates | Real-time writes/reads via API | Quarterly updates |
| Safety/Versioning | Version history, rate limits, natural edits | Not applicable |
| Integration | MCP (Codex, ChatGPT, Claude) + REST | Notion workspace + CSV (manual import) |
Pricing
pumaDB offers a free tier with 20 tables, 1,000 rows per table, and 25 MB total storage. Rate limits are 30 writes per minute and 60 reads per minute per key. Paid plans are likely for higher limits, but specific pricing is not detailed on the website.
Chrome Goldmine is a one-time purchase at $23.20 (launch discount from $29). This includes lifetime access, quarterly updates, and a 30-day money-back guarantee. No subscription or recurring fees.
Pros and Cons
pumaDB
Pros:
- No database setup or infrastructure management needed
- Works with popular AI agents via MCP (ChatGPT, Claude, Codex)
- Built-in version history and safety rails
- Supports both agent-facing (MCP) and server-side (REST) use
- Natural language memory updates
Cons:
- Limited free tier (1,000 rows, 25 MB)
- Not designed for non-developers or static data analysis
- No offline or local deployment option mentioned
- Rate limits may be restrictive for high-volume apps
Chrome Goldmine
Pros:
- Massive curated dataset (9,656 extensions) with revenue estimates
- One-time payment, no recurring costs
- Includes competitor analysis and rebuild difficulty scores
- Instant download and lifetime updates
- 30-day money-back guarantee
Cons:
- Static dataset – not a live service or API
- Requires Notion or CSV tools to use effectively
- Revenue estimates are projections, not guarantees
- No built-in memory or agent integration
- Limited to Chrome extension niche
Verdict
pumaDB is ideal for developers building AI agents that need persistent, lightweight memory without infrastructure overhead. Chrome Goldmine is perfect for indie makers seeking validated, profitable rebuild ideas from expired Chrome extensions. Choose pumaDB if you need agent memory; choose Chrome Goldmine if you need market research for your next extension project.
Chrome Goldmine
pumaDB