How to connect Zerobounce to Hermes Agent
Connect Zerobounce to Hermes with ClawLink: paste your Zerobounce key once and 20 tools work from chat. No MCP server to run, nothing stored on your machine.
ZerobounceAPI KEYMCPZeroBounce is an email validation and deliverability platform that helps businesses improve email marketing performance by identifying and removing invalid or risky email addresses.. Once connected, Hermes Agent can read and act on Zerobounce from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent Zerobounce 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 Zerobounce setup: pair once in the browser and your always-on Hermes agent can act on Zerobounce 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 Zerobounce.
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 Zerobounce
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with Zerobounce?"
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 Zerobounce in the ClawLink dashboard — paste your Zerobounce API key once.
Verify the connection by asking Hermes:
Use Zerobounce to activity data 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 Zerobounce is connected in the dashboard, that agent calls the same 20 Zerobounce tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Zerobounce MCP for Hermes
Looking for a Zerobounce MCP server for Hermes Agent? ClawLink connects Zerobounce to Hermes Agent and exposes 20 Zerobounce tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw Zerobounce integration works the same way.
What the Hermes Agent Zerobounce integration can do
20 Zerobounce tools are ready for Hermes Agent once the account is connected. The 17 below are the ones people reach for most; your agent can call all 20.
17 of 20 Zerobounce tools for Hermes
| Tool | What it does |
|---|---|
Activity data zerobounce_activity_data | Get activity data (opens, clicks, etc.) for a given email |
AI scoring single zerobounce_ai_scoring_single | Score a single email address using ZeroBounce AI |
Batch validate emails zerobounce_batch_validate_emails | Validate a batch of email addresses in real time |
Domain search file status zerobounce_domain_search_file_status | Get the processing status of a file submitted for bulk domain search |
Domain search get file zerobounce_domain_search_get_file | Download the results file for a completed bulk domain search job |
Domain search single zerobounce_domain_search_single | Identify common email address formats for a given domain |
Email finder file status zerobounce_email_finder_file_status | Get the processing status of a file submitted for bulk email finding |
Get API usage zerobounce_get_api_usage | Retrieve API usage statistics for a given period |
Get credit balance zerobounce_get_credit_balance | Retrieve your current ZeroBounce email validation credit balance |
Get email finder file zerobounce_get_email_finder_file | Download the results file for a completed bulk email finder job |
List filters zerobounce_list_filters | Retrieve all email addresses and domains in your allowlist and blocklist filters |
Validate email zerobounce_validate_email | Validate a single email address in real time |
Allow block list zerobounce_allow_block_list | Manage allowlist and blocklist for email validation |
Domain search send file zerobounce_domain_search_send_file | Upload a file for bulk domain search |
Email finder send file zerobounce_email_finder_send_file | Upload a file for bulk email finding |
List evaluator zerobounce_list_evaluator | Evaluate the quality of an email list |
Send file zerobounce_send_file | Upload a file for bulk email validation |
Try it: find the Zerobounce tool you need
Browse the 17 Zerobounce tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Use Zerobounce to activity data and walk me through the result in plain English.
Use Zerobounce to ai scoring single and walk me through the result in plain English.
Use Zerobounce to batch validate emails and walk me through the result in plain English.
Search Zerobounce for what I need, summarize the results, and tell me the next best action.
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 Zerobounce working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Zerobounce API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Zerobounce 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 Zerobounce. | 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 Zerobounce actions to the runtime in a format your agent can reliably use. | 20 tools for Zerobounce are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Zerobounce 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 Zerobounce in the browser, and the 20 tools above work from chat. There is no SDK and no config file, and the Zerobounce 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 Zerobounce
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 Zerobounce 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 Zerobounce tools
Zerobounce 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 Zerobounce 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.
Zerobounce 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 Zerobounce 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 Zerobounce integration?
Yes. ClawLink is the fastest way to connect Hermes to Zerobounce: link your Zerobounce account once in the browser and Hermes Agent can call the Zerobounce API through 20 ready-made tools — no custom code or token handling.
How do I connect Zerobounce 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 Zerobounce in the dashboard and Hermes can use it from the next message — no config files, and the Zerobounce key you paste is stored server-side instead of in your environment.
How long does it take to connect Zerobounce to Hermes Agent?
About two minutes. Sign in, click Connect next to Zerobounce in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring Zerobounce 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 Zerobounce working from chat.
Hermes paired but still can't use Zerobounce
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.
