# Workers Dolerite Base Onchain Tools Base Onchain Tools MCP server

Source: https://glimind.com/server/mcp-registry%2Fdev.workers.dolerite.base-onchain-tools%2Fbase-onchain-tools
Registry id: `mcp-registry/dev.workers.dolerite.base-onchain-tools/base-onchain-tools`
Status: live (checked 2026-10-27T07:12:03.519Z)

## Measurements (30 days)

- Uptime: 100%
- Checks: 4962
- Outages (90 days): 0

## Install

```json
{
  "mcpServers": {
    "workers-dolerite-base-onchain-tools-base": {
      "type": "http",
      "url": "https://base-onchain-tools.dolerite.workers.dev/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http workers-dolerite-base-onchain-tools-base https://base-onchain-tools.dolerite.workers.dev/mcp
```

## Tools (12)

- `base_address_check`: Pre-flight check on a Base mainnet address before you pay it: contract vs EOA, ETH and USDC balances, outbound tx count, and warnings about whether funds sent t
- `base_allowance`: ERC-20 allowance on Base: how much a spender may pull from an owner, whether it is an unlimited approval, the owner balance, and how much is actually spendable 
- `base_contract_audit`: What an UNVERIFIED Base contract can actually do — the case where block explorers show you nothing. Disassembles the deployed bytecode with a PUSH-aware opcode 
- `base_contract_type`: Identify what a Base contract actually is: ERC-20, ERC-721 or ERC-1155 via ERC-165, plus proxy detection across EIP-1967, EIP-1822 and the legacy ZeppelinOS slo
- `base_demo`: Free. Returns a complete, live contract audit of Base USDC — the same output shape as the paid audit tool, with the address fixed. Call this first to see what t
- `base_gas`: Live Base mainnet gas oracle: current gas price, base fee, recent base fee trend, priority fee percentiles, and the estimated cost of a plain ERC-20 transfer in
- `base_portfolio`: ETH and USDC balances for up to 20 Base addresses in a single call, with per-address funded flags and totals. One request instead of forty RPC round trips. Cost
- `base_price`: ETH/USD and BTC/USD read live from Chainlink's on-chain price feeds on Base, with the feed's own description, decimals, update timestamp, age in seconds and a s
- `base_simulate_transfer`: Will this token payment actually go through, and if not exactly why. Simulates the transfer without spending gas, decodes the real revert reason (Error(string),
- `base_token`: ERC-20 token metadata on Base mainnet: name, symbol, decimals and total supply, read straight from the contract. Costs $0.001 per call, paid in USDC over x402 o
- `base_token_price`: USD price for ANY token on Base, not just the two assets Chainlink covers. Discovers every Uniswap V3 pool against WETH and USDC across all four fee tiers, read
- `base_tx_check`: Confirm a Base mainnet transaction: success or reverted, block, confirmations and finality, gas used, and every ERC-20 transfer it moved with USDC amounts decod

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