FabTally Chain
On-chain monitoring reads: ENS/Basename expiry, gas, token unlocks & Chainlink oracle health.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport http fabtally-chain 'https://chain.fabtally.com/mcp'{
"mcpServers": {
"fabtally-chain": {
"type": "http",
"url": "https://chain.fabtally.com/mcp"
}
}
}Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
FabTally Chain — MCP server
On-chain monitoring reads an AI agent or dev polls per-call. Fronts the Chain HTTP API at **https://chain.fabtally.com**. Holds no private key.
Tools (all paid; a call with no payment returns the decoded x402 402 challenge)
| Tool | Price | What it does |
|---|---|---|
ens_expiry | $0.001 | Resolve an ENS .eth / Basename .base.eth name's registration expiry on-chain — expiry date, days-left, 90-day grace status, release date, current owner. Args: name. |
gas | $0.001 | Current gas for a chain via public RPC — base fee + suggested priority + max fee (gwei) at the latest block; optional at/below-threshold boolean. Args: chain, below_gwei?. |
token_unlocks | $0.003 | Next token vesting/unlock event(s) from DefiLlama's public emissions data — date, amount, % of max supply. Cleanly says so when there's no public schedule. Args: token (symbol/name/address), chain?. |
oracle_health | $0.003 | Chainlink price-feed health — last-update age, latest answer, round monotonicity, stale flag vs heartbeat, optional deviation vs a reference. Args: feed_address, chain, heartbeat_seconds?, reference?. |
Every tool also accepts an optional x_payment (base64 x402 payload) that is
forwarded as the X-PAYMENT header to settle the call and return the real result.
Humans can instead prepay by card and use an X-FabTally-Key credit key against
the HTTP API.
Transports
- stdio (portable):
npx fabtally-chain-mcp(bin:fabtally-chain-mcp) - streamable-http (hosted):
https://chain.fabtally.com/mcp
Config: FABTALLY_CHAIN_BASE (default https://chain.fabtally.com).
Read-only, keyless, stateless, descriptive market-data/utility reads. Operated by Sunstone Soft (fabtally.com). Not financial advice, not a signal, not a prediction. The stateful "alert me when …" delivery is a separate product (the FabTally Alerts Telegram bot).
Frequently asked questions
What is FabTally Chain?
On-chain monitoring reads: ENS/Basename expiry, gas, token unlocks & Chainlink oracle health.
How do I install FabTally Chain?
It runs as a remote server. In Claude Code: claude mcp add --transport http fabtally-chain 'https://chain.fabtally.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does FabTally Chain need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is FabTally Chain open source?
Yes. Its code is on GitHub under the MIT license.
Who maintains FabTally Chain?
It is published by zvmzaretsky. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.