How to connect Blocknative to Hermes Agent
Connect Blocknative to Hermes with ClawLink: paste your Blocknative key once and 10 tools work from chat. No MCP server to run, nothing stored on your machine.
BlocknativeAPI KEYMCPBlocknative provides real-time mempool monitoring and transaction management tools for public blockchains.. Once connected, Hermes Agent can read and act on Blocknative from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent Blocknative 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 Blocknative setup: pair once in the browser and your always-on Hermes agent can act on Blocknative 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 Blocknative.
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 Blocknative
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with Blocknative?"
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 Blocknative in the ClawLink dashboard — paste your Blocknative API key once.
Verify the connection by asking Hermes:
Pull the relevant data from Blocknative, summarize it in plain English, and point out anything that needs attention.
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 Blocknative is connected in the dashboard, that agent calls the same 10 Blocknative tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Blocknative MCP for Hermes
Looking for a Blocknative MCP server for Hermes Agent? ClawLink connects Blocknative to Hermes Agent and exposes 10 Blocknative tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw Blocknative integration works the same way.
What the Hermes Agent Blocknative integration can do
10 Blocknative tools are ready for Hermes Agent once the account is connected.
All 10 Blocknative tools for Hermes
| Tool | What it does |
|---|---|
Get gas distribution blocknative_get_gas_distribution | Retrieve the current mempool gas price distribution breakdown |
Get gas oracles blocknative_get_gas_oracles | Retrieve metadata on supported gas oracles per chain |
Get gas prices blocknative_get_gas_prices | Fetch gas price estimates for specific inclusion probabilities |
Get supported chains blocknative_get_supported_chains | Retrieve supported chains metadata |
Prediction API basefee estimates blocknative_prediction_api_basefee_estimates | Get real-time gas fee predictions for Ethereum mainnet's next 5 blocks |
Subscribe multichain blocknative_subscribe_multichain | Generate WebSocket connection details to subscribe to real-time blockchain events (transactions |
Subscribe transaction hash blocknative_subscribe_transaction_hash | Subscribe to transaction state change events of an Ethereum transaction hash |
Unsubscribe multichain blocknative_unsubscribe_multichain | Unsubscribe from events across multiple chains using the Multichain SDK |
Unsubscribe transaction hash blocknative_unsubscribe_transaction_hash | Unsubscribe from transaction state change events for an Ethereum transaction hash |
Configure filters blocknative_configure_filters | Configure filters and ABI decoding for Ethereum mempool transactions |
Try it: find the Blocknative tool you need
Browse the 10 Blocknative tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Pull the relevant data from Blocknative, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Blocknative, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Blocknative, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Blocknative, 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 Blocknative working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Blocknative API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Blocknative 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 Blocknative. | 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 Blocknative actions to the runtime in a format your agent can reliably use. | 10 tools for Blocknative are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Blocknative 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 Blocknative in the browser, and the 10 tools above work from chat. There is no SDK and no config file, and the Blocknative 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 Blocknative
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 Blocknative 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 Blocknative tools
Blocknative 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 Blocknative 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.
Blocknative 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 Blocknative 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 Blocknative integration?
Yes. ClawLink is the fastest way to connect Hermes to Blocknative: link your Blocknative account once in the browser and Hermes Agent can call the Blocknative API through 10 ready-made tools — no custom code or token handling.
How do I connect Blocknative 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 Blocknative in the dashboard and Hermes can use it from the next message — no config files, and the Blocknative key you paste is stored server-side instead of in your environment.
How long does it take to connect Blocknative to Hermes Agent?
About two minutes. Sign in, click Connect next to Blocknative in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring Blocknative 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 Blocknative working from chat.
Hermes paired but still can't use Blocknative
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.
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