# How to connect Customjs to OpenClaw (paste one key, 5 tools) > Connect Customjs to OpenClaw with ClawLink: paste your Customjs key once and 5 tools work from chat. No MCP server to run, nothing stored on your machine. Web version: https://claw-link.dev/openclaw/customjs The usual route to Customjs 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 Customjs setup: install one ClawHub skill, connect Customjs in the browser, and OpenClaw can call real Customjs actions from any chat surface with no auth, token refresh, or tool wiring to build yourself. ## Setup It takes three steps to connect OpenClaw to Customjs. 1. **Install ClawLink** — add the plugin to OpenClaw once. 2. **Connect Customjs** — one-click OAuth in the ClawLink dashboard. 3. **Use it from chat** — ask OpenClaw in plain English. **Paste this into OpenClaw to set up ClawLink:** > I want to connect my apps to OpenClaw through ClawLink. > Please install the ClawLink plugin from ClawHub and enable it: `openclaw plugins install clawhub:clawlink-plugin` > When it is installed, tell me and stop. After I reply, give me the ClawLink pairing link. Setup notes, if you need them: https://claw-link.dev/skill.md **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 customjs # connect Customjs (browser OAuth) npx -y @useclawlink/cli actions customjs # list available actions npx -y @useclawlink/cli run customjs --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 Customjs in the [ClawLink dashboard](https://claw-link.dev/dashboard) — paste your Customjs API key once. Verify the connection by asking OpenClaw: > Use Customjs to authenticate api key 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 Customjs is connected in the dashboard, that agent calls the same 5 Customjs 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). ## Customjs MCP for OpenClaw Looking for a Customjs MCP server for OpenClaw? ClawLink connects Customjs to OpenClaw and exposes 5 Customjs 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 Customjs integration](https://claw-link.dev/hermes/customjs) works the same way. ## What the OpenClaw Customjs integration can do 5 Customjs tools are ready for OpenClaw once the account is connected. ### All 5 Customjs tools for OpenClaw | Tool | What it does | |---|---| | **Authenticate API key** `customjs_authenticate_api_key` | Authenticate and validate a CustomJS API key | | **Convert HTML to PDF** `customjs_convert_html_to_pdf` | Convert HTML content to a PDF document | | **Convert HTML to png** `customjs_convert_html_to_png` | Convert HTML string to PNG image | | **Merge pdfs** `customjs_merge_pdfs` | Merge multiple PDF files from URLs into a single PDF document | | **Run puppeteer script** `customjs_run_puppeteer_script` | Execute a Puppeteer script in a headless browser and capture a screenshot | ## Example prompts **Authenticate Api Key** > Use Customjs to authenticate api key and walk me through the result in plain English. **Convert Html To Pdf** > Use Customjs to convert html to pdf and walk me through the result in plain English. **Convert Html To Png** > Use Customjs to convert html to png and walk me through the result in plain English. **Merge Pdfs** > Use Customjs to merge pdfs 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 Customjs working from chat. | | Manual | ClawLink | |---|---|---| | **Credential handling** | Collect, validate, store, and rotate the Customjs API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Customjs 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 Customjs. | 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 Customjs actions to the runtime in a format your agent can reliably use. | 5 tools for Customjs are already exposed through ClawLink, so the agent can read and act from chat immediately. | ## ClawLink vs. Composio Composio also exposes Customjs 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 Customjs in the browser, and the 5 tools above work from chat. There is no SDK and no config file, and the Customjs 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 Customjs skill but can't call the tools The ClawHub skill teaches OpenClaw about Customjs, but the calls run through the ClawLink plugin and your connected account. Make sure Customjs 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 Customjs 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 Customjs tools Customjs 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 Customjs 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. ### Customjs 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 Customjs has the right scopes or account access. A valid key can still be too limited for some reads or writes. ### Is there a OpenClaw Customjs integration? Yes. ClawLink is the fastest way to connect OpenClaw to Customjs: link your Customjs account once in the browser and OpenClaw can call the Customjs API through 5 ready-made tools — no custom code or token handling. ### How do I add Customjs to OpenClaw with ClawLink? Paste the setup prompt from this page into OpenClaw. It installs the ClawLink Customjs skill from ClawHub, then you click Connect in the dashboard to authorize Customjs. OpenClaw calls the tools from the next message — no config files, and the Customjs key you paste is stored server-side instead of in your environment. ### How long does it take to connect Customjs to OpenClaw? About two minutes. Sign in, click Connect next to Customjs in the dashboard, authenticate, and OpenClaw can use it from the next chat message. ### Why use ClawLink instead of wiring Customjs 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 Customjs working from chat. ### OpenClaw installed the Customjs skill but can't call the tools The ClawHub skill teaches OpenClaw about Customjs, but the calls run through the ClawLink plugin and your connected account. Make sure Customjs 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 - [OpenClaw SafetyCulture integration](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.