/api-ninjas

name: api-ninjas
description: |
  API Ninjas integration. Manage Organizations, Users, Goals, Filters. Use when the user wants to interact with API Ninjas data.
compatibility: Requires network access and a valid Membrane account (Free tier supported).
license: MIT
homepage: https://getmembrane.com
repository: https://github.com/membranedev/application-skills
metadata:
  author: membrane
  version: "1.0"
  categories: ""

API Ninjas

API Ninjas provides a collection of APIs for developers to quickly integrate various functionalities into their applications. It's used by developers who need access to data or services like weather information, text analysis, or image processing without building them from scratch.

Official docs: https://api-ninjas.com/documentation

API Ninjas Overview

• **API**
• **API Usage**
• **Subscription**
• **Subscription Usage**
• **Pricing**
• **Authentication**

Working with API Ninjas

This skill uses the Membrane CLI to interact with API Ninjas. Membrane handles authentication and credentials refresh automatically — so you can focus on the integration logic rather than auth plumbing.

Install the CLI

Install the Membrane CLI so you can run `membrane` from the terminal:

npm install -g @membranehq/cli@latest

Authentication

membrane login --tenant --clientName=<agentType>

This will either open a browser for authentication or print an authorization URL to the console, depending on whether interactive mode is available.

**Headless environments:** The command will print an authorization URL. Ask the user to open it in a browser. When they see a code after completing login, finish with:

membrane login complete <code>

Add `--json` to any command for machine-readable JSON output.

**Agent Types** : claude, openclaw, codex, warp, windsurf, etc. Those will be used to adjust tooling to be used best with your harness

Connecting to API Ninjas

Use `membrane connection ensure` to find or create a connection by app URL or domain:

membrane connection ensure "https://api-ninjas.com/" --json

The user completes authentication in the browser. The output contains the new connection id.

This is the fastest way to get a connection. The URL is normalized to a domain and matched against known apps. If no app is found, one is created and a connector is built automatically.

If the returned connection has `state: "READY"`, skip to **Step 2**.

1b. Wait for the connection to be ready

If the connection is in `BUILDING` state, poll until it's ready:

npx @membranehq/cli connection get <id> --wait --json

The `--wait` flag long-polls (up to `--timeout` seconds, default 30) until the state changes. Keep polling until `state` is no longer `BUILDING`.

The resulting state tells you what to do next:

• **`READY`** — connection is fully set up. Skip to **Step 2**.
• **`CLIENT_ACTION_REQUIRED`** — the user or agent needs to do something. The `clientAction` object describes the required action:
• `clientAction.type` — the kind of action needed:
• `"connect"` — user needs to authenticate (OAuth, API key, etc.). This covers initial authentication and re-authentication for disconnected connections.
• `"provide-input"` — more information is needed (e.g. which app to connect to).
• `clientAction.description` — human-readable explanation of what's needed.
• `clientAction.uiUrl` (optional) — URL to a pre-built UI where the user can complete the action. Show this to the user when present.
• `clientAction.agentInstructions` (optional) — instructions for the AI agent on how to proceed programmatically.

After the user completes the action (e.g. authenticates in the browser), poll again with `membrane connection get <id> --json` to check if the state moved to `READY`.

• **`CONFIGURATION_ERROR`** or **`SETUP_FAILED`** — something went wrong. Check the `error` field for details.

Searching for actions

Search using a natural language description of what you want to do:

membrane action list --connectionId=CONNECTION_ID --intent "QUERY" --limit 10 --json

You should always search for actions in the context of a specific connection.

Each result includes `id`, `name`, `description`, `inputSchema` (what parameters the action accepts), and `outputSchema` (what it returns).

Popular actions

| Name | Key | Description | | --- | --- | --- | | Lookup IP Address | lookup-ip-address | Returns location information (country, region, timezone) for an IP address. | | Compare Text Similarity | compare-text-similarity | Computes similarity score between two pieces of text using NLP machine learning models. | | Lookup Domain WHOIS | lookup-domain-whois | Retrieves domain registration information including registrar, creation date, expiration date, and name servers. | | Validate Email | validate-email | Validates an email address and returns metadata including whether it is valid, has MX records, and if it's a disposab... | | Geocode City | geocode-city | Converts a city name to latitude and longitude coordinates. | | Get Jokes | get-jokes | Returns random funny jokes. | | Get Joke of the Day | get-joke-of-the-day | Returns a single joke for the current day. | | Analyze Sentiment | analyze-sentiment | Returns sentiment analysis score and overall sentiment (POSITIVE, WEAK_POSITIVE, NEGATIVE, WEAK_NEGATIVE, or NEUTRAL)... | | Get Quotes | get-quotes | Returns high-quality quotes with advanced filtering by categories, author, and work. | | Get Random Quotes | get-random-quotes | Returns random high-quality quotes with advanced filtering. | | Get Weather | get-weather | Get current weather data including temperature, humidity, wind speed, and sunrise/sunset times by coordinates. | | Get Nutrition Info | get-nutrition-info | Extracts nutrition information from freeform text using natural language processing. | | Get Quote of the Day | get-quote-of-the-day | Returns a single aphoristic quo