# FabTally Chain (remote · chain.fabtally.com)

On-chain monitoring reads: ENS/Basename expiry, gas, token unlocks & Chainlink oracle health.

- Trust score: 62/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `chain.fabtally.com`: 62/100 (this document), [markdown](https://verifymcp.io/servers/zvmzaretsky-fabtally-chain/chain.md), [page](https://verifymcp.io/servers/zvmzaretsky-fabtally-chain/chain)

## Channel facts

- Endpoint: `https://chain.fabtally.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 64/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 900 tokens (~225/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http zvmzaretsky-fabtally-chain https://chain.fabtally.com/mcp
```

### Codex

```toml
[mcp_servers.zvmzaretsky-fabtally-chain]
url = "https://chain.fabtally.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "zvmzaretsky-fabtally-chain": {
      "type": "remote",
      "url": "https://chain.fabtally.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add zvmzaretsky-fabtally-chain --url https://chain.fabtally.com/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  zvmzaretsky-fabtally-chain:
    url: "https://chain.fabtally.com/mcp"
```

### Other

```json
{
  "mcpServers": {
    "zvmzaretsky-fabtally-chain": {
      "type": "http",
      "url": "https://chain.fabtally.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 61, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-01 (score 61)

First indexed and scored.

## MCP tools (4)

### `ens_expiry` (~192 tokens)

ENS / Basename expiry lookup (paid $0.001)

PAID $0.001 (x402, USDC on Base). Resolve an ENS .eth or Basename .base.eth name's registration expiry ON-CHAIN (public RPC). Returns expiry date, days-left, whether it's in the 90-day grace period, the release date it becomes registrable again, and the current owner. Read-only, descriptive. Args: name. Without payment returns the x402 challenge; pass x_payment to settle.

Input parameters:

- `name` (string, required): Full ENS name ending in .eth (e.g. vitalik.eth) or .base.eth (e.g. jesse.base.eth).
- `x_payment` (string): x402 payment payload (base64) for this PAID read. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price c…

### `gas` (~212 tokens)

Current gas for a chain (paid $0.001)

PAID $0.001 (x402, USDC on Base). Current gas for a chain via public RPC: base fee + suggested priority + suggested max fee (gwei) at the latest block. If below_gwei is set, also returns whether the base fee is at/below your threshold right now. Read-only. Args: chain (ethereum|base|arbitrum|polygon|bsc|optimism), below_gwei (optional). Without payment returns the x402 challenge; pass x_payment to settle.

Input parameters:

- `below_gwei` (number): Optional threshold: return a boolean of whether base fee is at/below this many gwei now.
- `chain` (string, required): Chain to read gas for.
- `x_payment` (string): x402 payment payload (base64) for this PAID read. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price c…

### `token_unlocks` (~226 tokens)

Next token vesting/unlock event(s) (paid $0.003)

PAID $0.003 (x402, USDC on Base). Next token vesting/unlock event(s) from DefiLlama's PUBLIC emissions dataset: upcoming unlock date(s), token amount, and % of max supply, with a human description. Cleanly says so when a token has no public unlock schedule. Read-only, descriptive — NOT a price signal. Args: token (symbol, protocol name, or contract address), chain (optional, for address lookup). Without payment returns the x402 challenge; pass x_payment to settle.

Input parameters:

- `chain` (string): Chain of the contract address (only used when token is an address).
- `token` (string, required): Token symbol (e.g. ARB), protocol name (e.g. arbitrum), or contract address.
- `x_payment` (string): x402 payment payload (base64) for this PAID read. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price c…

### `oracle_health` (~270 tokens)

Chainlink price-feed health (paid $0.003)

PAID $0.003 (x402, USDC on Base). Chainlink price-feed health via public RPC: last-update age, latest answer (scaled by decimals), round monotonicity (is the answer current?), a stale flag vs the heartbeat, optional deviation vs a reference price, and per-factor flags. Read-only, descriptive. Args: feed_address, chain, heartbeat_seconds (optional), reference (optional). Without payment returns the x402 challenge; pass x_payment.

Input parameters:

- `chain` (string, required): Chain the feed is deployed on.
- `feed_address` (string, required): Chainlink aggregator/proxy address (0x…40-hex), e.g. ETH/USD 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419.
- `heartbeat_seconds` (number): The feed's heartbeat in seconds for a precise stale check (optional).
- `reference` (number): A reference price to compute deviation % against (optional).
- `x_payment` (string): x402 payment payload (base64) for this PAID read. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price c…

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/zvmzaretsky-fabtally-chain/chain#diagnostics

## Score history

- 2026-08-03: 62
- 2026-08-02: 61
- 2026-08-01: 61

## Links

- Remote endpoint: https://chain.fabtally.com/mcp
- Repository: https://github.com/zvmzaretsky/fabtally-chain-mcp
- Website: https://chain.fabtally.com/
- Changelog RSS feed: https://verifymcp.io/servers/zvmzaretsky-fabtally-chain/chain/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/zvmzaretsky-fabtally-chain/chain/changelog.json
- HTML version of this page: https://verifymcp.io/servers/zvmzaretsky-fabtally-chain/chain