onchain-audit
On-chain data and contract security analysis. Includes Binance API and Bitget API for audit, token info, wallet, and contract analysis. CLAWBOT decides which to use based on context.
What this skill does
# On-chain Audit — Contract & On-chain Analysis
Two data sources; CLAWBOT chooses based on context.
Binance and Bitget data can be cross-verified.
---
## 1. Binance API (onchain)
`POST https://crab-skill.opsat.io/api/onchain/*` (requires Crab signature)
Fields: `address` + `chainName` (uppercase: `BSC`/`ETHEREUM`/`BASE`/`SOLANA`)
| Endpoint | Description |
|----------|-------------|
| `/api/onchain/audit` | Contract security audit (Binance + Bitget dual-source) |
| `/api/onchain/token-info` | Token metadata and market dynamics |
| `/api/onchain/wallet` | Wallet positions (BSC/BASE/SOLANA only) |
| `/api/onchain/token-search` | Token search (requires `keyword` instead of `address`) |
---
## 2. Bitget API (onchain-2)
`POST https://crab-skill.opsat.io/api/onchain-2/*` (requires Crab signature)
Fields: `chain` + `contract` (lowercase: `bnb`/`eth`/`base`/`sol`)
> Note: field names and chain format differ from Binance endpoints.
| Endpoint | Description |
|----------|-------------|
| `/api/onchain-2/token-info` | Token details (symbol, name, market cap, etc.) |
| `/api/onchain-2/token-price` | Token price summary |
| `/api/onchain-2/tx-info` | Token transaction statistics |
| `/api/onchain-2/liquidity` | Liquidity pool info |
| `/api/onchain-2/security-audit` | Security audit (risk/warn/low checks) |
---
---
## 3. Onchain Explorer API (explorer)
`POST https://crab-skill.opsat.io/api/explorer/*` (requires Crab signature)
See `API_EXPLORER.md` for full parameter and response details.
### 3a. Contract ABI / Source Code
**Endpoint**: `/api/explorer/contract`
Fields: `chain` (`ETH` or `BSC`) + `address`
| Key field | Description |
|-----------|-------------|
| `verified` | Contract is open-source and verified on Etherscan |
| `contractName` | Contract name |
| `compilerVersion` | Solidity compiler version |
| `optimizationUsed` | Whether optimization was enabled |
| `abi` | Contract ABI array |
| `sourceCode` | Source code (string, or object for multi-file) |
| `licenseType` | License type |
| `proxy` | Is this a proxy contract |
| `implementation` | Implementation address (proxy only) |
Returns `{ verified: false }` for unverified contracts.
### 3b. Token Transfer History
**Endpoint**: `/api/explorer/token-history`
Fields: `chain` (`ETH` / `BSC` / `SOL`) + `address` + optional pagination/filter
- **ETH/BSC**: pagination via `outPageKey` / `inPageKey`; each record has `hash`, `from`, `to`, `value`, `asset`, `category`, `blockNum`, `blockTimestamp`
- **SOL**: filter by `type` (SWAP/TRANSFER/BURN/...) and `source` (JUPITER/RAYDIUM/...); paginate via `before`; each record has `signature`, `timestamp`, `type`, `source`, `fee`, `nativeTransfers`, `tokenTransfers`, `events`
### 3c. SOL Address Overview
**Endpoint**: `/api/explorer/sol-address`
Fields: `address` + optional `txLimit` (default 10)
Returns: native SOL balance (lamports + USD), SPL token list, recent transfer records.
---
## Fallback Behavior
| Scenario | Behavior |
|---------------------------------|---------------------------------------------|
| Unknown contract chain | Skip audit |
| No token search results | Skip token search |
| Wallet chain not supported | Skip wallet query |
| Contract not verified (explorer)| Note as unverified, skip ABI/source display |
| Explorer upstream unavailable | Skip, continue with other sources |
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