Deterministic tools for AI agents.
Deterministic tools for AI agents.
More reliable than AI inference. A lightweight utility API suite for developers and AI agents.
{
"mcpServers": {
"thousand-api": {
"url": "https://mcp.thousand-api.com/mcp",
"headers": { "x-api-key": "your-api-key" }
}
}
}What AI agents struggle with—done reliably
Three pillars that connect agents to the outside world without guesswork.
Live data
FX rates, IP geolocation, holidays—facts, not guesses.
Side effects
QR codes and generated assets agents cannot produce on their own.
Deterministic math
Distance, time zones, business days, JSON validation—same input, same output.
Use cases
Hand agents MCP tools for work that breaks when left to inference
AI assistant
Scheduling for AI assistants
Meeting times and reminders drift when agents infer business days, time zones, or cron schedules.
Related tools
- Holiday & Business Day
- Cron Parser
AI marketing
Prep work for AI writers and marketers
Outlines and competitor research suffer when meta tags and post timing are guessed.
Related tools
- Page Meta / OGP
- QR Code Generator
- Holiday & Business Day
Cursor / Claude dev
Precise utilities for AI engineers
JSON, cron, and URLs in generated code introduce subtle spec mistakes.
Related tools
- JSON Validator
- Cron Parser
- URL Redirect Resolver
Chatbot
External sensors for chatbots
Bots lack live locale, link targets, and final URLs for short links.
Related tools
- IP Geolocation
- Page Meta / OGP
- QR Code Generator
- URL Redirect Resolver
MCP Tools
Reliable utility MCP tools for AI agents and developers
51 MCP tools available
Date & Calendar
8 toolsAnswer 'Is tomorrow a business day?' and 'When does this Cron run?' reliably
- Holiday & Business Day
- Timezone Conversion
- Cron Parser
- Current DateTime
- + 4 more
Text & String
9 toolsRegex testing, case conversion, and Japanese text conversion
- Regex Tester
- String Case Converter
- Template Engine
- Japanese Converter
- + 5 more
Convert & Format
10 toolsFormat conversions for AI-generated data with zero tokens
- YAML↔JSON
- CSV↔JSON
- Markdown→HTML
- Unit Conversion
- + 6 more
Data Processing
6 toolsExtract values from large JSON, validate schemas, compute statistics
- JSONPath Query
- JSON Schema Validator
- Stats Calculator
- Exchange Rate
- + 2 more
Network & Infra
7 toolsGet URL safety, DNS records, and IP geolocation in real time
- Page Meta / OGP
- DNS Lookup
- URL Health Check
- IP Geolocation
- + 3 more
Security & Auth
5 toolsGenerate hashes, decode JWTs, and create random strings reliably
- Hash Generation
- JWT Decode
- Random String
- + 2 more
Developer Utilities
6 toolsDistance, coordinates, color tools, and version comparison with deterministic results
- Distance Calculator
- Coordinate Conversion
- Color Palette
- Version Compare
- + 2 more
Tool names, endpoints, parameters, and response examples are in the
documentation →Works as an MCP server
Connect directly to Claude or Cursor. Copy the config and your AI agent can call Thousand API tools right away.
Supported clients
- Claude
- Cursor
- Other MCP-compatible tools
{
"mcpServers": {
"thousand-api": {
"url": "https://mcp.thousand-api.com/mcp",
"headers": { "x-api-key": "your-api-key" }
}
}
}Pricing
Start free. Upgrade as you scale.
Free
Free
Trial and light personal use
- MCP server connection
- REST API access
- API keys1
- Monthly requests1,000
- Email support
- Priority support
Starter
¥480/mo
Everyday personal use
- MCP server connection
- REST API access
- API keys5
- Monthly requests10,000
- Email support
- Priority support
Pro
¥1,980/mo
Power users and small teams
- MCP server connection
- REST API access
- API keys20
- Monthly requests100,000
- Email support
- Priority support