GadgetHumans API Hub — 24 Free MCP Tools Server

24 free MCP tools for AI agents — weather, crypto, search, DNS, QR codes, passwords, UUIDs, hashes, math, currency, geocoding, affiliate product search. Free tier: 100 requests/day. Pro: $2.99/mo.

GitHub

Documentation

🧠 Memory Vault — Don't Let Your Agent Wake Up Amnesic

Every AI agent forgets everything between sessions. Memory Vault fixes that.

Persistent cross-session memory for any MCP-compatible agent — Claude Code, Cursor, Windsurf, Codex CLI, Copilot, and 100+ more. Plus 45 utility tools.

✨ Why Memory Vault?

AI agents have a fundamental limitation: they're born with amnesia. Every new session is a blank slate. They forget:

✅ What you asked them to do
✅ What they learned about your project
✅ What config/credentials they set up
✅ What they already told another tool

Memory Vault is the first MCP server that gives agents permanent memory. Store once, recall forever. No more "I already told you this."

# Agent says: "I don't remember our previous conversation"
# With Memory Vault: "I remember — here's what we discussed last session"

🚀 Quick Start (5 seconds)

Option A: Hosted endpoint (no install)

# Add to your MCP client config:
{
  "mcpServers": {
    "memory-vault": {
      "url": "https://api.gadgethumans.com/mcp"
    }
  }
}

Option B: Local via uvx

uvx gadgethumans-api-hub-mcp

Option C: Install

pip install gadgethumans-api-hub-mcp

That's it. 46 MCP tools. Instant memory.

🧠 The Memory Vault (Killer Feature)

Tool	What it does
`agent_memory`	Store/recall/delete persistent data by key. Agents remember across sessions forever.
`memory_search`	Full-text search across everything you've stored.
`memory_list`	Browse all stored keys by category.
`agent_profile`	View your vault stats, usage, and upgrade options.

How it works

Session 1: Agent stores "project_config" → KV saves it forever
    ↓
Session 2 (days later): Agent recalls "project_config" → instant retrieval
    ↓
Session 100: Agent still remembers. Never forgets.

Data never expires. Stored in Cloudflare KV (99.99% durability). Only accessible by your agent.

🛠 45 Utility Tools — Everything Else

Category	Tools
🔐 Security	QR codes, password generator, UUIDs, hash (MD5/SHA256/SHA512), Base64, NanoID, ULID
💰 Finance	Crypto prices (Binance), currency exchange, mortgage calc, loan calc, investment calc, tax bracket, VAT calc, salary calc, compound interest
🌤️ Weather	Current weather, 7-day forecast, geocode, reverse geocode, air quality
🌐 Web	OG metadata, URL analyzer, RSS parser, meta scrape, link checker, page size, HTTP headers
📡 Network	DNS lookup, reverse DNS, DNSSEC, SSL check, WHOIS, domain age, CDN detect, port check, IP geolocation
📝 Text	Slugify, case convert, truncate, reverse, shuffle, padding, wrap, indent, remove accents, stopword removal, binary/base conversion
🎨 Colors	Hex↔RGB↔HSL↔HSV↔CMYK, color palette, contrast check, color harmony, color blindness sim
📊 Data	CSV↔JSON, JSON↔XML↔YAML, TOML↔JSON, INI↔JSON, TSV↔JSON, diff, merge, flatten, sort, filter, dedupe
🔢 Math	Fibonacci, prime check, factorial, GCD/LCM, percentage, stats, matrix ops, correlation, quadratic solver, geometry
🏥 Health	BMI, BMR, TDEE, body fat, calorie burn, macro calc, water intake, heart rate zones, VO₂ max
📖 Readability	Flesch-Kincaid, Gunning Fog, SMOG, ARI, Dale-Chall, FORCAST, Linsear Write, clarity score
💻 Code	Complexity analysis, stats, beautify, indent check, comment strip, bracket matching, language detection, TODO finder, SQL format
🔄 Conversions	Speed, area, volume, pressure, temperature (all units), time, angle, energy, data rate, pixels, bytes
🔓 Ciphers	Atbash, Caesar, ROT13, Vigenère, Morse code, NATO phonetic, Base32, Base85
🌍 Reference	Countries, currencies, languages, HTML entities, HTTP codes, MIME types, emoji list, ASCII table, paper sizes, chemical elements, keyboard layouts
📅 Dates	Business days, age calculator, week number, season, timezone conversion
🏃 Fitness	BMI, BMR, TDEE, body fat, ideal weight, calorie burn, macro calc, water intake, sleep calc, pace calc

Plus 300+ REST endpoints via the call_api proxy tool.

💰 Pricing

Tier	Price	Requests/day	Memory
🆓 Free	$0	100	✅ Persistent
⭐ Pro	$2.99/mo	500	✅ Unlimited
🏢 Enterprise	$9.99/mo	Unlimited	✅ Unlimited

👉 Subscribe to Pro →

🔧 REST API (no MCP needed)

# Free — no API key
curl "https://api.gadgethumans.com/qr?text=hello%20world"
curl "https://api.gadgethumans.com/password?length=24"
curl "https://api.gadgethumans.com/weather?city=London"
curl "https://api.gadgethumans.com/crypto?symbol=bitcoin"
curl "https://api.gadgethumans.com/dns?domain=example.com"

All 300+ endpoints at api.gadgethumans.com

🏗️ Architecture

┌─────────────┐     ┌──────────────────────────┐     ┌──────────────┐
│  AI Agent   │────→│  Memory Vault MCP        │────→│  Cloudflare  │
│ (Claude,    │     │  api.gadgethumans.com/mcp│     │  Worker + KV │
│  Cursor,    │     │                          │     │              │
│  Codex, etc)│     │  ┌────────────────────┐  │     │  ┌────────┐  │
│             │     │  │ agent_memory       │  │────→│  │  KV    │  │
│             │     │  │ memory_search      │  │     │  │ Store  │  │
│             │     │  │ memory_list        │  │     │  └────────┘  │
│             │     │  │ 45 utility tools   │  │     │              │
│             │     │  │ call_api (300+ )   │  │     │  ┌────────┐  │
│             │     │  └────────────────────┘  │     │  │REST API│  │
└─────────────┘     └──────────────────────────┘     │  │ 300+   │  │
                                                     │  │ routes │  │
                                                     │  └────────┘  │
                                                     └──────────────┘

📦 Links

Resource	Link
MCP Endpoint	`https://api.gadgethumans.com/mcp`
PyPI Package	`gadgethumans-api-hub-mcp`
Install	`pip install gadgethumans-api-hub-mcp` or `uvx gadgethumans-api-hub-mcp`
MCP Registry	`com.gadgethumans.api/api-hub`
Glama	glama.ai/mcp/servers/scotia1973-bot/api-hub
Smithery	smithery.ai/server/scotia1973/api-hub2
Subscribe	api.gadgethumans.com/mcp-subscribe
API Gateway	api.gadgethumans.com
Website	gadgethumans.com

🤝 Compatibility

Works with any MCP-compatible client:

Claude Desktop / Claude Code
Cursor
Windsurf
Codex CLI
GitHub Copilot
Continue.dev
Cline
OpenAI Responses API
Any MCP host

📝 License

MIT — do what you want. Built with ⚡ by Gadget Humans.

Star this repo if Memory Vault helped your agent remember something important. ⭐