Search / dev.workers.dolerite.base-onchain-tools/base-onchain-tools
protogridR0· no sign-inBase mainnet analysis: contract audits, transfer simulation, token pricing. Paid via x402.
v1.0.0 · active · website · descriptor JSON · versions
{
"mcpServers": {
"base-onchain-tools": {
"type": "http",
"url": "https://base-onchain-tools.dolerite.workers.dev/mcp"
}
}
}claude mcp add --transport http base-onchain-tools https://base-onchain-tools.dolerite.workers.dev/mcp[mcp_servers.base-onchain-tools]
url = "https://base-onchain-tools.dolerite.workers.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"base-onchain-tools": {
"type": "remote",
"url": "https://base-onchain-tools.dolerite.workers.dev/mcp",
"enabled": true
}
}
}{
"mcpServers": {
"base-onchain-tools": {
"type": "http",
"url": "https://base-onchain-tools.dolerite.workers.dev/mcp"
}
},
"deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=base-onchain-tools&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYmFzZS1vbmNoYWluLXRvb2xzLmRvbGVyaXRlLndvcmtlcnMuZGV2L21jcCJ9"
}{
"servers": {
"base-onchain-tools": {
"type": "http",
"url": "https://base-onchain-tools.dolerite.workers.dev/mcp"
}
}
}{
"mcpServers": {
"base-onchain-tools": {
"httpUrl": "https://base-onchain-tools.dolerite.workers.dev/mcp"
}
}
}extensions:
"base-onchain-tools":
enabled: true
name: "base-onchain-tools"
type: streamable_http
uri: "https://base-onchain-tools.dolerite.workers.dev/mcp"
timeout: 300
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28protocol.statelessonly applies to 2026-07-28 serversprotocol.transportstreamable HTTPprotocol.list_ttlonly applies to 2026-07-28 serversauth.prm, auth.as_metadata, auth.cimdno remote uses OAuthauth.secret_in_urlno templated URLtools.descriptionsevery tool has a descriptiontools.description_lengthdescriptions are concisetools.schemasevery tool has an object input schematools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky onestools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: base_gas (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); base_simulate_transfer (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); base_contract_audit (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …tools.token_costabout 1,714 tokens to load every tooltools.api_dumptools are not a one-to-one API dumpstability.changesno tool changes in 30 daysstability.rug_pullno tool changed its meaning under the same namedeps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI packageNo tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.
Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.
+dns-namespace +website +reachable +uptime-97% ~updated-60d-ago -no-repository
Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.
| remote | auth | reachable | uptime 30d | p50 | protocol | last ok |
|---|---|---|---|---|---|---|
https://base-onchain-tools.dolerite.workers.dev/mcp streamable-http | none | yes | 97% | 793 ms | 2025-06-18 | 2026-10-20 |
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 there can actually be moved. Costs $0.002 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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 right now. Defaults to USDC. Costs $0.001 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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 walk (a naive byte scan reports SELFDESTRUCT on contracts that cannot self-destruct), strips the Solidity metadata trailer, recovers the function selectors from the dispatch table and names them against a keccak-derived signature database, then reports admin powers (mint, blacklist, freeze, pause, trading switches, adjustable fees, upgrade hooks), dangerous opcodes (DELEGATECALL, SELFDESTRUCT, CALLCODE, CREATE2), which token standards it really implements, and whether it supports EIP-3009 so it can be paid gaslessly over x402 at all. Proxies are detected and followed, because a forwarder's own bytecode tells you nothing. Costs $0.04 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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 slot with the current implementation address. Costs $0.002 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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 the paid tools return before spending anything. |
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 ETH. Costs $0.001 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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. Costs $0.003 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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 staleness flag. Costs $0.001 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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), Panic codes translated to English, or a custom error selector), and separately reports balance and allowance blockers. Understands that a caller with no ETH is fine for gasless EIP-3009 or a sponsored relayer. Costs $0.008 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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, reads sqrtPriceX96 and does the Q96 fixed-point maths, prices off the deepest pool, ignores deployed-but-never-traded pools, and cross-checks the remaining ones to flag thin or manipulated liquidity. Costs $0.006 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
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 decoded. Costs $0.002 per call, paid in USDC over x402 on Base. Calling this tool returns the payment requirements; failed calls are never billed. |
Schemas: list_tools.
{
"name": "dev.workers.dolerite.base-onchain-tools/base-onchain-tools",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://base-onchain-tools.dolerite.workers.dev/mcp",
"type": "streamable-http"
}
],
"version": "1.0.0",
"websiteUrl": "https://base-onchain-tools.dolerite.workers.dev",
"description": "Base mainnet analysis: contract audits, transfer simulation, token pricing. Paid via x402."
}