How to connect CoinMarketCap to Hermes Agent
Connect CoinMarketCap to Hermes with ClawLink: paste your CoinMarketCap key once and 9 tools work from chat. No MCP server to run, nothing stored on your machine.
CoinMarketCapAPI KEYMCPCoinMarketCap provides a comprehensive cryptocurrency market data API, offering real-time and historical data on cryptocurrencies and exchanges.. Once connected, Hermes Agent can read and act on CoinMarketCap from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent CoinMarketCap access start with registering your own OAuth app or pasting API keys into env files, then leave the token refresh and tool wiring to you. ClawLink gives Hermes a more practical CoinMarketCap setup: pair once in the browser and your always-on Hermes agent can act on CoinMarketCap for you, reading and doing real work on your behalf with no auth, token refresh, or tool wiring to build yourself.
Setup
It takes three steps to connect Hermes to CoinMarketCap.
1Install and pair
Install the ClawLink plugin, then pair Hermes with a one-time browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable- 2
Connect CoinMarketCap
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with CoinMarketCap?"
Install by command
The prompt above walks Hermes through this. By hand, it is four commands and a browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable
hermes clawlink begin # prints an approval link — open it and approve
hermes clawlink finish # after approving in the browser
hermes clawlink testThen connect CoinMarketCap in the ClawLink dashboard — paste your CoinMarketCap API key once.
Verify the connection by asking Hermes:
Use CoinMarketCap to cryptocurrency listings latest and walk me through the result in plain English.
Using a different agent?
The Hermes 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 CoinMarketCap is connected in the dashboard, that agent calls the same 9 CoinMarketCap tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
CoinMarketCap MCP for Hermes
Looking for a CoinMarketCap MCP server for Hermes Agent? ClawLink connects CoinMarketCap to Hermes Agent and exposes 9 CoinMarketCap tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw CoinMarketCap integration works the same way.
What the Hermes Agent CoinMarketCap integration can do
9 CoinMarketCap tools are ready for Hermes Agent once the account is connected.
All 9 CoinMarketCap tools for Hermes
| Tool | What it does |
|---|---|
Cryptocurrency listings latest coinmarketcap_cryptocurrency_listings_latest | Fetch the latest cryptocurrency market listings from CoinMarketCap |
Cryptocurrency map coinmarketcap_cryptocurrency_map | Retrieve a mapping of all cryptocurrencies, including their unique IDs, symbols, and names |
Cryptocurrency quotes latest coinmarketcap_cryptocurrency_quotes_latest | Get the latest aggregated global market quotes for one or more cryptocurrencies |
Get cryptocurrency info coinmarketcap_get_cryptocurrency_info | Fetch metadata (description, logo, URLs) for one or more cryptocurrencies |
Get exchange info coinmarketcap_get_exchange_info | Get detailed metadata for one or more exchanges |
Get key info coinmarketcap_get_key_info | Retrieve your CoinMarketCap API key details, rate limits, and usage statistics |
Global metrics quotes latest coinmarketcap_global_metrics_quotes_latest | Obtain the latest global cryptocurrency market metrics (market cap, volume, dominance) |
Partner map coinmarketcap_partner_map | Retrieve a mapping of all CoinMarketCap partners with their unique IDs, names, and slugs |
Tools price conversion coinmarketcap_tools_price_conversion | Convert an amount from one cryptocurrency or fiat currency into another |
Try it: find the CoinMarketCap tool you need
Browse the 9 CoinMarketCap tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Use CoinMarketCap to cryptocurrency listings latest and walk me through the result in plain English.
Use CoinMarketCap to cryptocurrency map and walk me through the result in plain English.
Use CoinMarketCap to cryptocurrency quotes latest and walk me through the result in plain English.
Pull the relevant data from CoinMarketCap, 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 Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want CoinMarketCap working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the CoinMarketCap API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected CoinMarketCap 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 CoinMarketCap. | 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 CoinMarketCap actions to the runtime in a format your agent can reliably use. | 9 tools for CoinMarketCap are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes CoinMarketCap 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 Hermes Agent users instead. You install the plugin once, connect CoinMarketCap in the browser, and the 9 tools above work from chat. There is no SDK and no config file, and the CoinMarketCap 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
Hermes paired but still can't use CoinMarketCap
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
Connection succeeds but no tools appear
Reconnect CoinMarketCap 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 CoinMarketCap tools
CoinMarketCap 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 CoinMarketCap 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.
CoinMarketCap 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 CoinMarketCap has the right scopes or account access. A valid key can still be too limited for some reads or writes.
FAQ
Is there a Hermes Agent CoinMarketCap integration?
Yes. ClawLink is the fastest way to connect Hermes to CoinMarketCap: link your CoinMarketCap account once in the browser and Hermes Agent can call the CoinMarketCap API through 9 ready-made tools — no custom code or token handling.
How do I connect CoinMarketCap to Hermes with ClawLink?
Install the plugin with hermes plugins install ClawLink-HQ/hermes-plugin --enable, then pair once: run hermes clawlink begin, approve the link in your browser, and run hermes clawlink finish. Connect CoinMarketCap in the dashboard and Hermes can use it from the next message — no config files, and the CoinMarketCap key you paste is stored server-side instead of in your environment.
How long does it take to connect CoinMarketCap to Hermes Agent?
About two minutes. Sign in, click Connect next to CoinMarketCap in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring CoinMarketCap up myself?
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want CoinMarketCap working from chat.
Hermes paired but still can't use CoinMarketCap
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
