Block402
REMOTE · API.BLOCK402.XYZ · SCANNED OCT 7
Bitcoin + Ethereum RPC for AI agents. 44 tools. x402 required; Base Sepolia test USDC.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability80
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 4673 tokens (~99/item across 47 items; 44 tools + 3 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management10
- Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage83
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 50% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 44 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 46 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Block402 MCP server?
Block402 is a hosted endpoint at https://api.block402.xyz/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · api.block402.xyz
claude mcp add --transport http xyz-block402-block402 'https://api.block402.xyz/mcp'
{
"mcpServers": {
"xyz-block402-block402": {
"url": "https://api.block402.xyz/mcp"
}
}
} {
"servers": {
"xyz-block402-block402": {
"type": "http",
"url": "https://api.block402.xyz/mcp"
}
}
} [mcp_servers.xyz-block402-block402] url = "https://api.block402.xyz/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"xyz-block402-block402": {
"type": "remote",
"url": "https://api.block402.xyz/mcp",
"enabled": true
}
}
} openclaw mcp add xyz-block402-block402 --url 'https://api.block402.xyz/mcp' --transport streamable-http
mcp_servers:
xyz-block402-block402:
url: "https://api.block402.xyz/mcp" {
"McpServers": {
"xyz-block402-block402": {
"Transport": "http",
"Url": "https://api.block402.xyz/mcp"
}
}
} assistant mcp add xyz-block402-block402 -t streamable-http -u 'https://api.block402.xyz/mcp'
{
"mcpServers": {
"xyz-block402-block402": {
"type": "http",
"url": "https://api.block402.xyz/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 7 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 6 Oct 26 +2
- Judged manipulation: unverified → pass ▲ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “bitcoin_getbestblockhash” rewrote its description, which is the text the model reads security
- Tool “bitcoin_getblock” rewrote its description, which is the text the model reads security
- Tool “bitcoin_getblockcount” rewrote its description, which is the text the model reads security
- Tool “bitcoin_getblockhash” rewrote its description, which is the text the model reads security
- Tool “bitcoin_getblockheader” rewrote its description, which is the text the model reads security
- Tool “bitcoin_getrawtransaction” rewrote its description, which is the text the model reads security
- Tool “bitcoin_gettxout” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_blobBaseFee” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_blockNumber” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_call” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_chainId” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_createAccessList” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_estimateGas” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_feeHistory” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_gasPrice” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getBalance” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getBlockByHash” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getBlockByNumber” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getBlockReceipts” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getBlockTransactionCountByHash” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getBlockTransactionCountByNumber” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getCode” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getLogs” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getProof” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getRawTransactionByBlockHashAndIndex” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getRawTransactionByBlockNumberAndIndex” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getRawTransactionByHash” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getStorageAt” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getTransactionByBlockHashAndIndex” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getTransactionByBlockNumberAndIndex” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getTransactionByHash” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getTransactionCount” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getTransactionReceipt” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getUncleByBlockHashAndIndex” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getUncleByBlockNumberAndIndex” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getUncleCountByBlockHash” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_getUncleCountByBlockNumber” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_maxPriorityFeePerGas” rewrote its description, which is the text the model reads security
- Tool “ethereum_eth_syncing” rewrote its description, which is the text the model reads security
- Tool “ethereum_net_listening” rewrote its description, which is the text the model reads security
- Tool “ethereum_net_peerCount” rewrote its description, which is the text the model reads security
- Tool “ethereum_net_version” rewrote its description, which is the text the model reads security
- Tool “ethereum_web3_clientVersion” rewrote its description, which is the text the model reads security
- Tool “ethereum_web3_sha3” rewrote its description, which is the text the model reads security
- Stability: unverified → 0.07 ▲ functional
- 4 Oct 26 65
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 8 Oct 2026 · Probed https://api.block402.xyz/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=block402.xyz | CN=WE1,O=Google Trust Services,C=US | 22 Sept 2026 | 21 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 5168a459d1ad82f40e87e30fffe77549 |
| SANs: block402.xyz, *.block402.xyz | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of api.block402.xyz. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| xyz. | present | 3599, 18130 | 8, 8 | Verified |
| block402.xyz. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.block402.xyz/mcp | Verified | 200 | |
| http (plaintext) | http://api.block402.xyz/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
bitcoin_getbestblockhash ~113
Read getbestblockhash from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
bitcoin_getblock ~109
Read getblock from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
bitcoin_getblockcount ~111
Read getblockcount from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
bitcoin_getblockhash ~111
Read getblockhash from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
bitcoin_getblockheader ~111
Read getblockheader from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
bitcoin_getrawtransaction ~111
Read getrawtransaction from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
bitcoin_gettxout ~111
Read gettxout from Bitcoin (bip122:000000000019d6689c085ae165831e93). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_blobBaseFee ~100
Read eth_blobBaseFee from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_blockNumber ~98
Read eth_blockNumber from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_call ~94
Read eth_call from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_chainId ~98
Read eth_chainId from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_createAccessList ~98
Read eth_createAccessList from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_estimateGas ~98
Read eth_estimateGas from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_feeHistory ~96
Read eth_feeHistory from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_gasPrice ~100
Read eth_gasPrice from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getBalance ~96
Read eth_getBalance from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getBlockByHash ~102
Read eth_getBlockByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getBlockByNumber ~102
Read eth_getBlockByNumber from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getBlockReceipts ~102
Read eth_getBlockReceipts from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getBlockTransactionCountByHash ~106
Read eth_getBlockTransactionCountByHash from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getBlockTransactionCountByNumber ~106
Read eth_getBlockTransactionCountByNumber from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getCode ~96
Read eth_getCode from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getLogs ~98
Read eth_getLogs from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getProof ~96
Read eth_getProof from Ethereum (eip155:1). Costs 0.010000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getRawTransactionByBlockHashAndIndex ~110
Read eth_getRawTransactionByBlockHashAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getRawTransactionByBlockNumberAndIndex ~110
Read eth_getRawTransactionByBlockNumberAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getRawTransactionByHash ~104
Read eth_getRawTransactionByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getStorageAt ~98
Read eth_getStorageAt from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getTransactionByBlockHashAndIndex ~108
Read eth_getTransactionByBlockHashAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getTransactionByBlockNumberAndIndex ~108
Read eth_getTransactionByBlockNumberAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getTransactionByHash ~102
Read eth_getTransactionByHash from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getTransactionCount ~98
Read eth_getTransactionCount from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | – | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getTransactionReceipt ~100
Read eth_getTransactionReceipt from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getUncleByBlockHashAndIndex ~110
Read eth_getUncleByBlockHashAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getUncleByBlockNumberAndIndex ~110
Read eth_getUncleByBlockNumberAndIndex from Ethereum (eip155:1). Costs 0.005000 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getUncleCountByBlockHash ~108
Read eth_getUncleCountByBlockHash from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_getUncleCountByBlockNumber ~108
Read eth_getUncleCountByBlockNumber from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_maxPriorityFeePerGas ~104
Read eth_maxPriorityFeePerGas from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_eth_syncing ~98
Read eth_syncing from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_net_listening ~98
Read net_listening from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_net_peerCount ~98
Read net_peerCount from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_net_version ~96
Read net_version from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_web3_clientVersion ~100
Read web3_clientVersion from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
ethereum_web3_sha3 ~100
Read web3_sha3 from Ethereum (eip155:1). Costs 0.002500 USDC on Base mainnet (eip155:8453). Preserve the private idempotencyKey for retries.
| Name | Type | Req | Description |
|---|---|---|---|
| idempotencyKey | string | yes | Private random 32-byte lowercase hex recovery key. Persist before payment and reuse only for retries of this same method and params. Never publish it. |
| params | array | yes | – |
No output schema declared.
No examples provided.
What is the Block402 MCP server?
Block402 is an MCP server listed in the public MCP registry as xyz.block402/block402. Bitcoin + Ethereum RPC for AI agents. 44 tools. x402 required; Base Sepolia test USDC. This page covers its hosted endpoint (https://api.block402.xyz/mcp).
Is the Block402 MCP server safe to use?
Block402 scores 68 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Block402 MCP server expose?
Block402 exposes 44 tools: bitcoin_getblockcount, bitcoin_getbestblockhash, bitcoin_getblockhash, bitcoin_getblockheader, bitcoin_getblock, and 39 more. Their descriptions and schemas cost roughly 4,531 tokens of context every time the server is loaded.
Does the Block402 MCP server require authentication?
No. We connected to Block402 without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Block402 MCP server still maintained?
Block402 is still listed as active in the MCP registry. We last reached this channel on 7 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.