How to connect beaconcha.in to Hermes Agent
Connect beaconcha.in to Hermes with ClawLink: paste your beaconcha.in key once and 37 tools work from chat. No MCP server to run, nothing stored on your machine.
beaconcha.inAPI KEYMCPBeaconchain is a platform providing real-time data and analytics for the Ethereum 2.0 Beacon Chain, offering insights into validators, blocks, and network performance.. Once connected, Hermes Agent can read and act on beaconcha.in from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent beaconcha.in 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 beaconcha.in setup: pair once in the browser and your always-on Hermes agent can act on beaconcha.in 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 beaconcha.in.
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 beaconcha.in
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with beaconcha.in?"
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 beaconcha.in in the ClawLink dashboard — paste your beaconcha.in API key once.
Verify the connection by asking Hermes:
Pull the relevant data from beaconcha.in, 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 beaconcha.in is connected in the dashboard, that agent calls the same 37 beaconcha.in tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
beaconcha.in MCP for Hermes
Looking for a beaconcha.in MCP server for Hermes Agent? ClawLink connects beaconcha.in to Hermes Agent and exposes 37 beaconcha.in tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw beaconcha.in integration works the same way.
What the Hermes Agent beaconcha.in integration can do
37 beaconcha.in tools are ready for Hermes Agent once the account is connected. The 30 below are the ones people reach for most; your agent can call all 37.
30 of 37 beaconcha.in tools for Hermes
| Tool | What it does |
|---|---|
Get chart beaconchain_get_chart | Retrieve chart visualizations from beaconcha.in as PNG images |
Get epoch beaconchain_get_epoch | Retrieve aggregate metrics and status for a beacon chain epoch |
Get eth store daily beaconchain_get_eth_store_daily | Retrieve ETH.Store daily aggregate metrics for Ethereum validators |
Get eth1 deposits by tx hash beaconchain_get_eth1_deposits_by_tx_hash | Retrieve all beacon chain validator deposit events associated with a specific execution-layer |
Get execution address erc20 tokens beaconchain_get_execution_address_erc20_tokens | Retrieve a paginated list of ERC-20 token balances for a specific Ethereum address |
Get execution block beaconchain_get_execution_block | Retrieve one or more execution-layer blocks by block number from the Ethereum Beacon Chain |
Get execution produced blocks beaconchain_get_execution_produced_blocks | Retrieve execution-layer blocks attributed to one or more producers |
Get latest state beaconchain_get_latest_state | Retrieve the latest known Ethereum Beacon Chain network state |
Get network performance beaconchain_get_network_performance | Retrieve aggregated network performance metrics for the Ethereum Beacon Chain |
Get node health beaconchain_get_node_health | Check the health status of the beaconcha.in explorer service |
Get queues beaconchain_get_queues | Retrieve current queue metrics for Ethereum Beacon Chain validators |
Get rocketpool validator beaconchain_get_rocketpool_validator | Retrieve Rocket Pool-specific metadata for validators including minipool status, node fee |
Get slot beaconchain_get_slot | Retrieve detailed information about an Ethereum Beacon Chain slot |
Get slot attestations beaconchain_get_slot_attestations | Retrieve all attestations included in the beacon block for a specific slot |
Get slot attester slashings beaconchain_get_slot_attester_slashings | Retrieve all attester slashing operations included in the beacon block for a specific slot |
Get slot proposer slashings beaconchain_get_slot_proposer_slashings | Retrieve all proposer slashing operations included in the beacon block for a specific slot |
Get slot voluntary exits beaconchain_get_slot_voluntary_exits | Retrieve all voluntary exit operations included in the beacon block for a specific slot |
Get sync committee beaconchain_get_sync_committee | Retrieve the sync committee membership for a given sync period |
Get validator beaconchain_get_validator | Retrieve detailed information about an Ethereum Beacon Chain validator |
Get validator attestation efficiency beaconchain_get_validator_attestation_efficiency | Retrieve normalized attestation inclusion effectiveness for one or more validators |
Get validator attestations beaconchain_get_validator_attestations | Retrieve attestations observed for one or more validators within a bounded epoch window |
Get validator balance history beaconchain_get_validator_balance_history | Retrieve per-epoch balance history for one or more Ethereum Beacon Chain validators |
Get validator bls changes beaconchain_get_validator_bls_changes | Retrieve on-chain BLS-to-execution credential change messages (EIP-4881) for validators |
Get validator consensus rewards beaconchain_get_validator_consensus_rewards | Retrieve consensus-layer rewards for one or more validators over multiple lookback windows |
Get validator daily stats beaconchain_get_validator_daily_stats | Retrieve per-day statistics for a single Ethereum Beacon Chain validator by index |
Get validator deposits beaconchain_get_validator_deposits | Retrieve execution-layer deposit events for one or more validators |
Get validator execution rewards beaconchain_get_validator_execution_rewards | Retrieve execution-layer rewards (priority fees and MEV payments) for one or more validators |
Get validator income history beaconchain_get_validator_income_history | Retrieve a per-epoch income breakdown for one or more validators |
Get validator leaderboard beaconchain_get_validator_leaderboard | Retrieve the current top 100 validators ranked by 7-day consensus-layer rewards |
Get validator proposals beaconchain_get_validator_proposals | Retrieve beacon chain blocks proposed by one or more validators within a bounded epoch window |
Try it: find the beaconcha.in tool you need
Browse the 30 beaconcha.in 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 beaconcha.in, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from beaconcha.in, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from beaconcha.in, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from beaconcha.in, 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 beaconcha.in working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the beaconcha.in API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected beaconcha.in 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 beaconcha.in. | 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 beaconcha.in actions to the runtime in a format your agent can reliably use. | 37 tools for beaconcha.in are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes beaconcha.in 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 beaconcha.in in the browser, and the 37 tools above work from chat. There is no SDK and no config file, and the beaconcha.in 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 beaconcha.in
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 beaconcha.in 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 beaconcha.in tools
beaconcha.in 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 beaconcha.in 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.
beaconcha.in 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 beaconcha.in 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 beaconcha.in integration?
Yes. ClawLink is the fastest way to connect Hermes to beaconcha.in: link your beaconcha.in account once in the browser and Hermes Agent can call the beaconcha.in API through 37 ready-made tools — no custom code or token handling.
How do I connect beaconcha.in 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 beaconcha.in in the dashboard and Hermes can use it from the next message — no config files, and the beaconcha.in key you paste is stored server-side instead of in your environment.
How long does it take to connect beaconcha.in to Hermes Agent?
About two minutes. Sign in, click Connect next to beaconcha.in in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring beaconcha.in 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 beaconcha.in working from chat.
Hermes paired but still can't use beaconcha.in
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.
