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DeFi Monitor

DeFi Monitor queries tracked liquidity pools, lending protocols, and staking positions via RPC calls to monitor health metrics like TVL, yield rates, and liquidation risk. Use this skill to receive alerts when yields shift significantly, pool liquidity drops substantially, or positions approach danger thresholds, with findings logged to track protocol changes over time.

View source Repository: aeon

Install in Claude Code

Copy

git clone --depth 1 https://github.com/aaronjmars/aeon /tmp/defi-monitor && cp -r /tmp/defi-monitor/skills/defi-monitor ~/.claude/skills/defi-monitor

Then start a new Claude Code session; the skill loads automatically.

Definition

SKILL.md

> **${var}** — Position label to check. If empty, checks all watched positions.

If `${var}` is set, only check the position with that label.


## Config

This skill reads watched contracts and positions from `memory/on-chain-watches.yml`. If the file doesn't exist yet, create it or skip this skill.

```yaml
# memory/on-chain-watches.yml
watches:
  - label: My Wallet
    address: "0x1234...abcd"
    chain: ethereum
    rpc_url: https://eth.llamarpc.com
    type: wallet
    threshold: 0.1  # ETH — alert on balance changes above this

  - label: Uniswap Pool
    address: "0xabcd...5678"
    chain: ethereum
    rpc_url: https://eth.llamarpc.com
    type: contract
```

---

Read memory/MEMORY.md and memory/on-chain-watches.yml for watched contracts and positions.
Read the last 2 days of memory/logs/ to track changes over time.

Steps:
1. For each DeFi position in on-chain-watches.yml (type: pool or position):
   - Query the contract for current state using eth_call:
     ```bash
     # Example: read slot0 from a Uniswap-style pool
     curl -s -X POST "${rpc_url}" \
       -H "Content-Type: application/json" \
       -d '{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"'"$address"'","data":"'"$calldata"'"},"latest"],"id":1}'
     ```
   - For known protocols, query standard view functions:
     - Liquidity pools: totalSupply, reserves, current tick/price
     - Lending: supplyRate, borrowRate, utilization
     - Staking: earned rewards, APR
2. Compare current values against last logged values.
3. Flag anything noteworthy:
   - Yield rate change > 20%
   - Pool TVL drop > 10%
   - Position approaching liquidation
   - Impermanent loss exceeding threshold
4. Format and send via `./notify`:
   ```
   *DeFi Monitor — ${today}*

   *Pool/Protocol Label* (chain)
   TVL: $X | APR: Y%
   Your position: details
   Change since last check: summary
   ```
5. Log findings to memory/logs/${today}.md.
## Sandbox note

The sandbox may block outbound curl. Use **WebFetch** as a fallback for any URL fetch. For auth-required APIs, use the pre-fetch/post-process pattern (see CLAUDE.md).

If no DeFi positions configured, log "DEFI_MONITOR_OK" and end.