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Use one API key to access data APIs across finance, technology, places, text, and more.

Search Crossref’s deposited scholarly metadata and retrieve records by DOI or other publication identifiers.

An unauthenticated HTTP API for querying World Bank country and development-indicator time series.

Run an open-source object-relational database with SQL, extensible types, indexing, replication, and JSON support.

Retrieve current conditions, forecasts, history and location data through one weather-focused REST API.

A Java DSL for sending REST requests from tests and asserting response status and data.

Search palette ideas by theme or hex value and export the colours

Retrieve stock history and filing data as JSON

A Python command-line toolkit for authoring and running declarative chaos experiments against configured systems.

Define and validate data and configuration with a language that combines values and constraints.

Format source files with a consistent, opinionated printer that supports common web and configuration languages.

Write programmable configuration with validation and generate JSON, YAML, and other output formats.

Query relational, JSON, geospatial, text, and time-series data through one distributed SQL database.

Connect Shopify product and business data to maintained structured-data markup.

Convert tables and JSON with explicit parsing controls

Review and edit a table before exporting another format

Apple expense tracking with a free starter budget and recurring-entry controls

Turn a known web page URL into Markdown or structured content for search and language-model workflows.

Run command-line or Node.js accessibility checks against web pages and local HTML.

Format and lint web-project files with a shared command-line toolchain.

Display system and hardware information in a customizable terminal summary.

Fetch free latest or historical exchange-rate data from a public REST API without an API key.

Turn addresses into coordinates, or coordinates into place details, through a REST API.

Add static type checking and compiler configuration to a JavaScript project.