# Block402

> Bitcoin + Ethereum RPC for AI agents. 44 tools. x402 payments in USDC on Base mainnet.

- name: xyz.block402/block402
- version: 0.1.1
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 83/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/xyz.block402%2Fblock402
- tools: https://api.protogrid.dev/v1/servers/xyz.block402%2Fblock402/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "block402": {
      "type": "http",
      "url": "https://api.block402.xyz/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 97
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-91% +updated-10d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 83/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 93 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 44 of 44 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- warn `tools.token_cost`: about 12,013 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 75 (weight 15)

- warn `stability.changes`: 44 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 44, about 12,013 tokens to load them all
- tool set hash: 7474fdbfd8251ec2959165feef8d1578
- tools last changed: 2026-10-07T02:42:12.929Z
- badge: [![protogrid quality](https://protogrid.dev/badge/xyz.block402/block402.svg)](https://protogrid.dev/servers/xyz.block402/block402)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-07 `ethereum_eth_getBlockReceipts` changed (description)
  - before: Read eth_getBlockReceipts from Ethereum (eip155:1). Costs 0.010000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_getBlockReceipts from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_getLogs` changed (description)
  - before: Read eth_getLogs from Ethereum (eip155:1). Costs 0.010000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_getLogs from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_getProof` changed (description)
  - before: Read eth_getProof from Ethereum (eip155:1). Costs 0.010000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_getProof from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_createAccessList` changed (description)
  - before: Read eth_createAccessList from Ethereum (eip155:1). Costs 0.010000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_createAccessList from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_estimateGas` changed (description)
  - before: Read eth_estimateGas from Ethereum (eip155:1). Costs 0.010000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_estimateGas from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_call` changed (description)
  - before: Read eth_call from Ethereum (eip155:1). Costs 0.010000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_call from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_feeHistory` changed (description)
  - before: Read eth_feeHistory from Ethereum (eip155:1). Costs 0.005000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_feeHistory from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_getRawTransactionByHash` changed (description)
  - before: Read eth_getRawTransactionByHash from Ethereum (eip155:1). Costs 0.005000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_getRawTransactionByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_getTransactionReceipt` changed (description)
  - before: Read eth_getTransactionReceipt from Ethereum (eip155:1). Costs 0.005000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_getTransactionReceipt from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- 2026-10-07 `ethereum_eth_getTransactionByHash` changed (description)
  - before: Read eth_getTransactionByHash from Ethereum (eip155:1). Costs 0.005000 test USDC on eip155:84532. Preserve the private idempotencyKey for retries.
  - after: Read eth_getTransactionByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.

Full history: https://api.protogrid.dev/v1/servers/xyz.block402%2Fblock402/changes

## Remotes

- https://api.block402.xyz/mcp (streamable-http, auth none, reachable true, uptime30d 0.9137931)

## Packages

_none_

## Tools (44)

- `bitcoin_getbestblockhash`: Read getbestblockhash from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `bitcoin_getblock`: Read getblock from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `bitcoin_getblockcount`: Read getblockcount from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `bitcoin_getblockhash`: Read getblockhash from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `bitcoin_getblockheader`: Read getblockheader from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `bitcoin_getrawtransaction`: Read getrawtransaction from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `bitcoin_gettxout`: Read gettxout from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_blobBaseFee`: Read eth_blobBaseFee from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_blockNumber`: Read eth_blockNumber from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_call`: Read eth_call from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_chainId`: Read eth_chainId from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_createAccessList`: Read eth_createAccessList from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_estimateGas`: Read eth_estimateGas from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_feeHistory`: Read eth_feeHistory from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_gasPrice`: Read eth_gasPrice from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getBalance`: Read eth_getBalance from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getBlockByHash`: Read eth_getBlockByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getBlockByNumber`: Read eth_getBlockByNumber from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getBlockReceipts`: Read eth_getBlockReceipts from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getBlockTransactionCountByHash`: Read eth_getBlockTransactionCountByHash from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getBlockTransactionCountByNumber`: Read eth_getBlockTransactionCountByNumber from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getCode`: Read eth_getCode from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getLogs`: Read eth_getLogs from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getProof`: Read eth_getProof from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getRawTransactionByBlockHashAndIndex`: Read eth_getRawTransactionByBlockHashAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getRawTransactionByBlockNumberAndIndex`: Read eth_getRawTransactionByBlockNumberAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getRawTransactionByHash`: Read eth_getRawTransactionByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getStorageAt`: Read eth_getStorageAt from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getTransactionByBlockHashAndIndex`: Read eth_getTransactionByBlockHashAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getTransactionByBlockNumberAndIndex`: Read eth_getTransactionByBlockNumberAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getTransactionByHash`: Read eth_getTransactionByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getTransactionCount`: Read eth_getTransactionCount from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getTransactionReceipt`: Read eth_getTransactionReceipt from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getUncleByBlockHashAndIndex`: Read eth_getUncleByBlockHashAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getUncleByBlockNumberAndIndex`: Read eth_getUncleByBlockNumberAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getUncleCountByBlockHash`: Read eth_getUncleCountByBlockHash from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_getUncleCountByBlockNumber`: Read eth_getUncleCountByBlockNumber from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_maxPriorityFeePerGas`: Read eth_maxPriorityFeePerGas from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_eth_syncing`: Read eth_syncing from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_net_listening`: Read net_listening from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_net_peerCount`: Read net_peerCount from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_net_version`: Read net_version from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_web3_clientVersion`: Read web3_clientVersion from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
- `ethereum_web3_sha3`: Read web3_sha3 from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.