How to connect Marketstack to OpenClaw
Connect Marketstack to OpenClaw with ClawLink: paste your Marketstack key once and 19 tools work from chat. No MCP server to run, nothing stored on your machine.
MarketstackAPI KEYMCPStock Data Real-Time, Intraday & Historical Market Data API providing access to 125,000+ tickers across 72+ stock exchanges worldwide.. Once connected, OpenClaw can read and act on Marketstack from chat — pairing, token refresh, and tool wiring handled for you.
The usual route to Marketstack 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 Marketstack setup: install one ClawHub skill, connect Marketstack in the browser, and OpenClaw can call real Marketstack 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 Marketstack.
1Install the plugin
Paste the setup prompt into OpenClaw, or install from the terminal and ask OpenClaw to pair:
openclaw plugins install clawhub:clawlink-plugin- 2
Connect Marketstack
Paste your API key in the dashboard.
- 3
Use it from chat
Ask OpenClaw: "What can you do with Marketstack?"
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:
openclaw plugins install clawhub:clawlink-pluginThen 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 Marketstack in the ClawLink dashboard — paste your Marketstack API key once.
Verify the connection by asking OpenClaw:
Pull the relevant data from Marketstack, summarize it in plain English, and point out anything that needs attention.
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:
npx -y @useclawlink/cli loginlogin opens the same browser approval and stores a credential locally. Once Marketstack is connected in the dashboard, that agent calls the same 19 Marketstack tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Marketstack MCP for OpenClaw
Looking for a Marketstack MCP server for OpenClaw? ClawLink connects Marketstack to OpenClaw and exposes 19 Marketstack tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using Hermes instead? The Hermes Marketstack integration works the same way.
What the OpenClaw Marketstack integration can do
19 Marketstack tools are ready for OpenClaw once the account is connected.
All 19 Marketstack tools for OpenClaw
| Tool | What it does |
|---|---|
Get dividends marketstack_get_dividends | Retrieve stock dividend data for one or more ticker symbols from Marketstack API |
Get eod marketstack_get_eod | Retrieve end-of-day (EOD) stock data for one or multiple ticker symbols |
Get exchange marketstack_get_exchange | Retrieve detailed information for a specific stock exchange by its MIC (Market Identifier Code) |
Get exchange intraday marketstack_get_exchange_intraday | Retrieve intraday stock data for symbols on a specific stock exchange (by MIC) at a chosen |
Get exchange intraday date marketstack_get_exchange_intraday_date | Retrieve intraday stock data for symbols on a specific stock exchange (by MIC) for a specific |
Get exchange intraday latest marketstack_get_exchange_intraday_latest | Retrieve the latest available intraday data for symbols on a specific stock exchange (by MIC) |
Get intraday marketstack_get_intraday | Retrieve intraday (real-time and historical) stock data for one or multiple ticker symbols at a |
Get intraday date marketstack_get_intraday_date | Retrieve intraday stock data for one or multiple ticker symbols on a specific date |
Get intraday latest marketstack_get_intraday_latest | Retrieve the latest available intraday data point(s) for one or multiple ticker symbols |
Get splits marketstack_get_splits | Retrieve stock split data for one or more stock symbols from Marketstack |
Get stock price marketstack_get_stock_price | Retrieve the real-time (last known) stock price for a ticker symbol |
Get ticker eod marketstack_get_ticker_eod | Retrieve end-of-day stock price data for a specific ticker symbol |
Get ticker eod latest marketstack_get_ticker_eod_latest | Retrieve end-of-day (EOD) stock data for the latest available date for a specific ticker |
Get ticker info marketstack_get_ticker_info | Retrieve detailed information about stock tickers including exchange, sector, and industry data |
Get ticker intraday marketstack_get_ticker_intraday | Retrieve intraday stock data for a single ticker symbol at a chosen interval |
Get ticker intraday latest marketstack_get_ticker_intraday_latest | Retrieve the latest available intraday bar for a single ticker symbol, including real-time |
List currencies marketstack_list_currencies | Retrieve a list of all supported currencies from the Marketstack API |
List exchanges marketstack_list_exchanges | Retrieve information about supported stock exchanges |
List tickers marketstack_list_tickers | Get a list of all supported stock tickers |
Try it: find the Marketstack tool you need
Browse the 19 Marketstack tools
Click any tool to see exactly what OpenClaw can do and copy a ready-to-use prompt.
Example prompts
Pull the relevant data from Marketstack, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Marketstack, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Marketstack, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Marketstack, summarize it in plain English, and point out anything that needs attention.
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 Marketstack working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Marketstack API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Marketstack 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 Marketstack. | 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 Marketstack actions to the runtime in a format your agent can reliably use. | 19 tools for Marketstack are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Marketstack 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 Marketstack in the browser, and the 19 tools above work from chat. There is no SDK and no config file, and the Marketstack key you paste at setup is stored server-side rather than kept in your environment. Choosing between them? Read the full Composio alternatives comparison.
Troubleshooting
OpenClaw installed the Marketstack skill but can't call the tools
The ClawHub skill teaches OpenClaw about Marketstack, but the calls run through the ClawLink plugin and your connected account. Make sure Marketstack 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 Marketstack 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 Marketstack tools
Marketstack 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 Marketstack 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.
Marketstack 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 Marketstack has the right scopes or account access. A valid key can still be too limited for some reads or writes.
FAQ
Is there a OpenClaw Marketstack integration?
Yes. ClawLink is the fastest way to connect OpenClaw to Marketstack: link your Marketstack account once in the browser and OpenClaw can call the Marketstack API through 19 ready-made tools — no custom code or token handling.
How do I add Marketstack to OpenClaw with ClawLink?
Paste the setup prompt from this page into OpenClaw. It installs the ClawLink Marketstack skill from ClawHub, then you click Connect in the dashboard to authorize Marketstack. OpenClaw calls the tools from the next message — no config files, and the Marketstack key you paste is stored server-side instead of in your environment.
How long does it take to connect Marketstack to OpenClaw?
About two minutes. Sign in, click Connect next to Marketstack in the dashboard, authenticate, and OpenClaw can use it from the next chat message.
Why use ClawLink instead of wiring Marketstack 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 Marketstack working from chat.
OpenClaw installed the Marketstack skill but can't call the tools
The ClawHub skill teaches OpenClaw about Marketstack, but the calls run through the ClawLink plugin and your connected account. Make sure Marketstack 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.
