# How to connect API Ninjas to OpenClaw (paste one key, 128 tools) > Connect API Ninjas to OpenClaw with ClawLink: paste your API Ninjas key once and 128 tools work from chat. No MCP server to run, nothing stored on your machine. Web version: https://claw-link.dev/openclaw/api-ninjas The usual route to API Ninjas access for OpenClaw is an MCP server you configure and keep running, plus your own OAuth app or API keys. ClawLink gives OpenClaw a more practical API Ninjas setup: install one ClawHub skill, connect API Ninjas in the browser, and OpenClaw can call real API Ninjas actions from any chat surface with no auth, token refresh, or tool wiring to build yourself. **Start here:** install the ClawLink plugin (`openclaw plugins install clawhub:clawlink-plugin`), pair it in the browser, then connect the app in the ClawLink dashboard. The interactive install prompt is on the web version of this page: https://claw-link.dev/openclaw/api-ninjas ## Setup It takes three steps to connect OpenClaw to API Ninjas. 1. **Install ClawLink** — add the plugin to OpenClaw once. 2. **Connect API Ninjas** — one-click OAuth in the ClawLink dashboard. 3. **Use it from chat** — ask OpenClaw in plain English. **Alternative for any agent (no plugin needed):** if the OpenClaw plugin route isn't available or doesn't work, any AI agent with shell access can use the ClawLink CLI instead: ```bash npx -y @useclawlink/cli login # sign in via browser — no API key to paste npx -y @useclawlink/cli connect api-ninjas # connect API Ninjas (browser OAuth) npx -y @useclawlink/cli actions api-ninjas # list available actions npx -y @useclawlink/cli run api-ninjas --input '' # execute (add --confirm for writes) ``` ### Install by command The setup prompt above does all of this in one paste. By hand, it is one install command plus a browser approval: ```bash openclaw plugins install clawhub:clawlink-plugin ``` Then ask OpenClaw to set up ClawLink. It starts browser pairing and prints an approval link — open it, approve the device, return to the chat, and say `done`. Finally, connect API Ninjas in the [ClawLink dashboard](https://claw-link.dev/dashboard) — paste your API Ninjas API key once. Verify the connection by asking OpenClaw: > Use API Ninjas to analyze sentiment and walk me through the result in plain English. ### Using a different agent? The OpenClaw plugin is one client of ClawLink's MCP server. Claude Code, Cursor, Codex, or any agent that can run a shell command pairs with the same ClawLink account through the CLI: ```bash npx -y @useclawlink/cli login ``` `login` opens the same browser approval and stores a credential locally. Once API Ninjas is connected in the dashboard, that agent calls the same 128 API Ninjas tools over MCP. Full setup for MCP clients and shell agents: [connect apps to any AI agent](https://claw-link.dev/learn/connect-apps-to-any-ai-agent). ## API Ninjas MCP for OpenClaw Looking for a API Ninjas MCP server for OpenClaw? ClawLink connects API Ninjas to OpenClaw and exposes 128 API Ninjas tools your agent can call over [MCP](https://claw-link.dev/learn/what-is-an-mcp-server), with [hosted auth](https://claw-link.dev/learn/oauth-for-ai-agents) and nothing to run or maintain yourself. Using Hermes instead? The [Hermes API Ninjas integration](https://claw-link.dev/hermes/api-ninjas) works the same way. ## What the OpenClaw API Ninjas integration can do 128 API Ninjas tools are ready for OpenClaw once the account is connected. The 30 below are the ones people reach for most; your agent can call all 128. ### 30 of 128 API Ninjas tools for OpenClaw | Tool | What it does | |---|---| | **Analyze sentiment** `api_ninjas_analyze_sentiment` | Analyze the sentiment of text | | **Barcode generate** `api_ninjas_barcode_generate` | Generate a barcode image for specified text | | **Bin lookup** `api_ninjas_bin_lookup` | Look up bank information from a Bank Identification Number | | **Bitcoin** `api_ninjas_bitcoin` | Retrieve the latest Bitcoin price and 24-hour market data | | **Calculate calories burned** `api_ninjas_calculate_calories_burned` | Calculate calories burned for an activity based on duration and body weight | | **Calculate mortgage** `api_ninjas_calculate_mortgage` | Calculate mortgage payments and breakdowns | | **Calculate sales tax** `api_ninjas_calculate_sales_tax` | Calculate sales tax for a purchase amount at a US location | | **Check domain** `api_ninjas_check_domain` | Check domain availability and retrieve registration information | | **Get counter** `api_ninjas_get_counter` | Get and optionally increment a persistent counter | | **Check is public holiday** `api_ninjas_check_is_public_holiday` | Check if a specific date is a public holiday in a given country | | **Check is working day** `api_ninjas_check_is_working_day` | Check if a date is a working day in a specific country | | **Check spelling** `api_ninjas_check_spelling` | Check spelling and get corrections for text | | **Commodity price** `api_ninjas_commodity_price` | Get real-time commodity prices from major exchanges (CME, NYMEX, COMEX) | | **Compute text similarity** `api_ninjas_compute_text_similarity` | Compute semantic similarity between two texts | | **Convert currency** `api_ninjas_convert_currency` | Convert between currencies using current exchange rates | | **Convert unit** `api_ninjas_convert_unit` | Convert between measurement units across different categories | | **Crypto price** `api_ninjas_crypto_price` | Get the current real-time price for a cryptocurrency trading pair | | **Detect text language** `api_ninjas_detect_text_language` | Detect the language of input text | | **Disposable email checker** `api_ninjas_disposable_email_checker` | Check whether an email address is from a disposable email provider | | **Dns lookup** `api_ninjas_dns_lookup` | Retrieve DNS records for a specified domain | | **Earnings calendar** `api_ninjas_earnings_calendar` | Fetches historical earnings data (EPS and revenue - actual vs | | **Earnings call transcript** `api_ninjas_earnings_call_transcript` | Retrieve the full earnings call transcript for a publicly traded company | | **Etf info** `api_ninjas_etf_info` | Retrieve detailed information about an Exchange-Traded Fund (ETF) by its ticker symbol | | **Extract webpage content** `api_ninjas_extract_webpage_content` | Extract main content and metadata from a webpage | | **Filter profanity** `api_ninjas_filter_profanity` | Detect and censor profanity in text | | **Find ev charging stations** `api_ninjas_find_ev_charging_stations` | Find electric vehicle charging stations near a specified location | | **Generate lorem ipsum** `api_ninjas_generate_lorem_ipsum` | Generate Lorem Ipsum placeholder text | | **Generate password** `api_ninjas_generate_password` | Generate secure random passwords with configurable length and character types | | **Generate qr code** `api_ninjas_generate_qr_code` | Generate QR code images for encoding data | | **Generate random user** `api_ninjas_generate_random_user` | Generate fake random user profiles with realistic data | ## Example prompts **Analyze Sentiment** > Use API Ninjas to analyze sentiment and walk me through the result in plain English. **Barcode Generate** > Use API Ninjas to barcode generate and walk me through the result in plain English. **Bin Lookup** > Use API Ninjas to bin lookup and walk me through the result in plain English. **Bitcoin** > Use API Ninjas to bitcoin and walk me through the result in plain English. ## ClawLink vs. building it yourself The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for OpenClaw. That is fine if you want to build and maintain the integration yourself. Most teams just want API Ninjas working from chat. | | Manual | ClawLink | |---|---|---| | **Credential handling** | Collect, validate, store, and rotate the API Ninjas API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected API Ninjas account becomes available to the agent without you building credential management. | | **Ongoing maintenance** | You own refresh logic, permission debugging, environment config, and every provider-specific edge case for API Ninjas. | ClawLink handles the repetitive integration plumbing so your team can focus on the workflow instead of the infrastructure. | | **Agent usability** | You still need to expose the right API Ninjas actions to the runtime in a format your agent can reliably use. | 128 tools for API Ninjas are already exposed through ClawLink, so the agent can read and act from chat immediately. | ## ClawLink vs. Composio Composio also exposes API Ninjas to AI agents. It is developer infrastructure: Python and TypeScript SDKs, an MCP server, and a catalog past 1,000 apps, aimed at teams shipping agent products. ClawLink is built for OpenClaw users instead. You install the plugin once, connect API Ninjas in the browser, and the 128 tools above work from chat. There is no SDK and no config file, and the API Ninjas key you paste at setup is stored server-side rather than kept in your environment. Choosing between them? Read the full [Composio alternatives](https://claw-link.dev/hub/composio-alternatives) comparison. ### OpenClaw installed the API Ninjas skill but can't call the tools The ClawHub skill teaches OpenClaw about API Ninjas, but the calls run through the ClawLink plugin and your connected account. Make sure API Ninjas is connected in the dashboard, then start a fresh chat so OpenClaw reloads the tool catalog. If OpenClaw runs as a persistent gateway, restart it so the new tools register. ### Connection succeeds but no tools appear Reconnect API Ninjas from the dashboard, then start a fresh chat if the runtime still has the old tool catalog loaded. ### "Tool schema not loaded yet" error when calling API Ninjas tools API Ninjas tool schemas load on demand the first time a tool runs and are cached after that, so this error usually clears on its own: wait a few seconds and retry the same request. If every API Ninjas call keeps failing with it in a fresh chat, reconnect from the dashboard, and contact support if it still persists — that pattern points to a configuration problem on our side, not something you can fix by reconnecting again. ### API Ninjas returns 403 or "permission denied" on one action while others work Two usual causes. The connected account may not have access to the specific workspace, inbox, store, or project in the request — check that first. If access looks right, the agent may have sent a placeholder value (like "YOUR_ID" or an example id from documentation) instead of a real one: ask it to run a list or search tool first, then retry the action with a real id from those results. Most failures at this stage are one of these two, not ClawLink bugs. ### API key setup works but results look incomplete Double-check that the API key for API Ninjas has the right scopes or account access. A valid key can still be too limited for some reads or writes. ### Is there a OpenClaw API Ninjas integration? Yes. ClawLink is the fastest way to connect OpenClaw to API Ninjas: link your API Ninjas account once in the browser and OpenClaw can call the API Ninjas API through 128 ready-made tools — no custom code or token handling. ### How do I add API Ninjas to OpenClaw with ClawLink? Paste the setup prompt from this page into OpenClaw. It installs the ClawLink API Ninjas skill from ClawHub, then you click Connect in the dashboard to authorize API Ninjas. OpenClaw calls the tools from the next message — no config files, and the API Ninjas key you paste is stored server-side instead of in your environment. ### How long does it take to connect API Ninjas to OpenClaw? About two minutes. Sign in, click Connect next to API Ninjas in the dashboard, authenticate, and OpenClaw can use it from the next chat message. ### Why use ClawLink instead of wiring API Ninjas up myself? The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for OpenClaw. That is fine if you want to build and maintain the integration yourself. Most teams just want API Ninjas working from chat. ### OpenClaw installed the API Ninjas skill but can't call the tools The ClawHub skill teaches OpenClaw about API Ninjas, but the calls run through the ClawLink plugin and your connected account. Make sure API Ninjas is connected in the dashboard, then start a fresh chat so OpenClaw reloads the tool catalog. If OpenClaw runs as a persistent gateway, restart it so the new tools register. ## Related - [GitHub](https://claw-link.dev/openclaw/github) — Manage repositories, issues, pull requests, and workflows - [PagerDuty](https://claw-link.dev/openclaw/pagerduty) — Manage incidents, on-call schedules, and services - [Connect SafetyCulture](https://claw-link.dev/openclaw/safetyculture) — SafetyCulture (formerly iAuditor) is a workplace operations platform that enables teams to conduct digital inspections, manage audits, track issues, schedule tasks, and maintain compliance through mobile and web applications.