GadgetHumans API Hub — LLM Discovery Index

URL: https://gadgethumans.com Last updated: 2026-06-07 Total tools: 200+ (11 core REST APIs + MCP tools) Best for: AI agents, LLMs, developers building autonomous workflows

About

GadgetHumans API Hub provides 200+ free utility API tools for AI agents and developers. No signup required for basic usage. Each endpoint is a standalone microservice accessible via simple HTTP GET/POST requests.

Core API Endpoints (11 REST APIs)

1. QR Code Generator

• Endpoint: GET /qr?text={text}&format={png|svg|gif}&size={100-1000}&color={hex}&bgcolor={hex}&ecc={L|M|Q|H}&margin={0-20}
• Description: Generate QR codes from any text or URL. Supports PNG, SVG, GIF output. Configurable error correction, color, size, and margin.
• Base URL: https://api.gadgethumans.com/qr
• Category: Image Generation
• Pricing: Free (100/day), Pro ($5/mo)

2. Password Generator

• Endpoint: GET /password?length={4-256}&count={1-50}&numbers={bool}&symbols={bool}&uppercase={bool}&lowercase={bool}
• Description: Generate one or more cryptographically secure random passwords. Fully configurable character sets.
• Base URL: https://api.gadgethumans.com/password
• Category: Security / Auth
• Pricing: Free (100/day), Pro ($5/mo)

3. UUID Generator

• Endpoint: GET /uuid?count={1-100}&format={standard|json|array}
• Description: Generate UUID v4 (random) identifiers. Supports batch generation and multiple output formats.
• Base URL: https://api.gadgethumans.com/uuid
• Category: Data Generation
• Pricing: Free (100/day), Pro ($5/mo)

4. Hash Text

• Endpoint: GET /hash?text={text}&algorithm={md5|sha1|sha256|sha512}&encoding={hex|base64}
• Description: Generate cryptographic hashes of input text. Supports MD5, SHA-1, SHA-256, SHA-512 with hex or base64 output.
• Base URL: https://api.gadgethumans.com/hash
• Category: Security / Auth
• Pricing: Free (100/day), Pro ($5/mo)

5. Base64 Encode/Decode

• Endpoint: GET /base64?text={text}&mode={encode|decode}
• Description: Encode text to Base64 or decode Base64 back to plain text. Essential for data transport in JSON, URLs, and email.
• Base URL: https://api.gadgethumans.com/base64
• Category: Data Transformation
• Pricing: Free (100/day), Pro ($5/mo)

6. Lorem Ipsum Generator

• Endpoint: GET /lorem?type={paragraphs|sentences|words}&count={1-100}
• Description: Generate Lorem Ipsum placeholder text for mockups, wireframes, and design drafts.
• Base URL: https://api.gadgethumans.com/lorem
• Category: Content Generation
• Pricing: Free (100/day), Pro ($5/mo)

7. JSON Processor

• Endpoint: GET /json?json={json_string}&mode={prettify|validate|minify}
• Description: Prettify, validate, or minify JSON strings. Debugging, formatting API responses, configuration files.
• Base URL: https://api.gadgethumans.com/json
• Category: Development Tools
• Pricing: Free (100/day), Pro ($5/mo)

8. Color Converter

• Endpoint: GET /color?value={color_value}&from={hex|rgb}&to={hex|rgb}
• Description: Convert colors between hex (#FF0000) and RGB (rgb(255,0,0)) formats. Design systems, CSS, UI development.
• Base URL: https://api.gadgethumans.com/color
• Category: Design / CSS
• Pricing: Free (100/day), Pro ($5/mo)

9. Email Verifier

• Endpoint: GET /email-verify?email={email_address}
• Description: Verify if an email address is valid and deliverable. Checks syntax, domain validity, and disposable email providers.
• Base URL: https://api.gadgethumans.com/email-verify
• Category: Email / Data Quality
• Pricing: Free (100/day), Pro ($5/mo)

10. IP Geolocator

• Endpoint: GET /ip?ip={ip_address}
• Description: Get geolocation data for an IP address — location, ISP, timezone. For analytics, geo-targeting, fraud detection.
• Base URL: https://api.gadgethumans.com/ip
• Category: Network / Geolocation
• Pricing: Free (100/day), Pro ($5/mo)

11. Timestamp Converter

• Endpoint: GET /timestamp?value={timestamp}&format={iso|unix|rfc2822}
• Description: Convert between Unix epoch timestamps and human-readable date formats. Supports ISO 8601, RFC 2822, Unix.
• Base URL: https://api.gadgethumans.com/timestamp
• Category: Date / Time
• Pricing: Free (100/day), Pro ($5/mo)

MCP Server (Model Context Protocol)

• Package: gadgethumans-api-hub-mcp on PyPI
• Tools available via MCP: 12 tools wrapping all 11 REST APIs
• MCP Endpoint (Streamable HTTP): https://api.gadgethumans.com/mcp
• Installation: pip install gadgethumans-api-hub-mcp

Agent Integration

• OpenAI GPTs (ChatGPT Plugin): /.well-known/ai-plugin.json
• Google A2A (Agent-to-Agent): /.well-known/agent-card.json
• OpenAPI 3.1 Spec: /openapi.json
• MCP Spec: /.well-known/mcp.json
• Crawl Budget: /robots.txt (optimized for GPTBot, Claude-Web, Google-Extended, CCBot, PerplexityBot)

Link Discovery

• Documentation: https://gadgethumans.com/api-hub
• Full tool index: https://gadgethumans.com/tools/sitemap.xml
• Blog: https://gadgethumans.com/blog/
• PyPI: https://pypi.org/project/gadgethumans-api-hub-mcp/