Professor Sausages — On-chain is a remote MCP server that gives an AI agent 12 tools, among them address_screen, chain_info, ens_resolve. It answers at https://x402.professorsausages.com/mcp/onchain over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.
EVM gas, Chainlink prices, token-safety, swap quotes, ENS, OFAC & NFT via x402.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
address_screen | Screen a crypto address against the full live OFAC SDN list, segmented by chain. Returns a verdict with the matching SDN entries as evidence — never a silent all-clear. Paid: call without x_payment to receive this call's exact terms (amount Inputs: chain, address, x_payment |
chain_info | Canonical record for an EVM chain — name, native currency, explorers, liveness-scored public RPCs. view='rpcs' returns only the ranked, eth_chainId-probed RPC list; view='wallet_config' returns a ready-to-submit EIP-3085 wallet_addEthereumC Inputs: chain_id, view, q, parent, x_payment |
ens_resolve | Resolve an ENS name to an address, or an address to its forward-verified primary name — direction is detected from the input. view='profile' returns the full identity card (multichain addresses, text records, contenthash, avatar); view='ava Inputs: query, view, keys, x_payment |
find_data | Describe the data you need in plain language (e.g. 'Apple risk factors 2023', 'is this token a honeypot', 'is this email deliverable', 'read this page'). Searches this server's datasets first, then the whole Professor Sausages catalog, and Inputs: task |
gas_compare | Rank every supported chain by all-in USD transaction cost — the 'where should I send this' routing decision, with the OP-stack L1 data fee included. Paid: call without x_payment to receive this call's exact terms (amount, asset, network), s Inputs: tx_type, gas, speed, x_payment |
gas_price | Bid-ready EIP-1559 fees (slow/standard/fast maxFeePerGas + maxPriorityFeePerGas, tx-ready wei) for one chain, read live from public RPCs. Pass tx_type to get the USD cost of that specific transaction instead, including the OP-stack L1 data Inputs: chain, tx_type, gas, speed, x_payment |
nft_scam_check | Deterministic scam checklist with a verdict and evidence (spam flags, copymint collisions, holder concentration). Pass a collection contract to check the collection, or a wallet to check that wallet's whole scam exposure holding by holding. Inputs: contract, wallet, chain, x_payment |
pricing | Every endpoint this server fronts, with its exact per-call USD price (x402, USDC on Base) and a one-line summary, read live from the route table. Free. |
request_data | The suggestion box: ask for data we don't have (a pre-2015 filing, an uncovered ticker, an unsupported chain, a whole dataset). Requests feed the nightly ingestion queue — filings are usually available within ~24h. Include contact if you wa Inputs: description, use_case, contact |
spot_price | Live Chainlink on-chain spot price for an asset (latestRoundData, with round metadata). Pass `to` as well to cross-convert two assets via their USD feeds, with both legs reported. Paid: call without x_payment to receive this call's exact te Inputs: asset, to, amount, chain, x_payment |
swap_quote | Indicative UniswapV2 swap quote from live on-chain reserves: amount out, execution price, and price impact — what the trade will actually cost before you sign it. Paid: call without x_payment to receive this call's exact terms (amount, asse Inputs: chain, token_in, token_out, amount, x_payment |
token_safety | Heuristic token safety check: follows the proxy and scans the bytecode that actually runs, plus ownership and transfer restrictions. Returns a verdict with per-rule evidence. Paid: call without x_payment to receive this call's exact terms ( Inputs: chain, address, x_payment |
Every block below points at https://x402.professorsausages.com/mcp/onchain. Pick your client and copy.
claude mcp add --transport http professor-sausages-on-chain https://x402.professorsausages.com/mcp/onchain
{
"mcpServers": {
"professor-sausages-on-chain": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://x402.professorsausages.com/mcp/onchain"]
}
}
}{
"mcpServers": {
"professor-sausages-on-chain": {
"url": "https://x402.professorsausages.com/mcp/onchain"
}
}
}{
"servers": {
"professor-sausages-on-chain": {
"type": "http",
"url": "https://x402.professorsausages.com/mcp/onchain"
}
}
}{
"context_servers": {
"professor-sausages-on-chain": {
"url": "https://x402.professorsausages.com/mcp/onchain"
}
}
}{
"mcpServers": {
"professor-sausages-on-chain": {
"serverUrl": "https://x402.professorsausages.com/mcp/onchain"
}
}
}{
"mcpServers": {
"professor-sausages-on-chain": {
"url": "https://x402.professorsausages.com/mcp/onchain"
}
}
}name: Professor Sausages — On-chain
version: 0.0.1
schema: v1
mcpServers:
- name: Professor Sausages — On-chain
type: streamable-http
url: https://x402.professorsausages.com/mcp/onchain{
"mcpServers": {
"professor-sausages-on-chain": {
"httpUrl": "https://x402.professorsausages.com/mcp/onchain"
}
}
}{
"mcpServers": {
"professor-sausages-on-chain": {
"type": "http",
"url": "https://x402.professorsausages.com/mcp/onchain"
}
}
}{
"mcpServers": {
"professor-sausages-on-chain": {
"url": "https://x402.professorsausages.com/mcp/onchain"
}
}
}goose://extension?url=https%3A%2F%2Fx402.professorsausages.com%2Fmcp%2Fonchain&type=streamable_http&id=professor-sausages-on-chain&name=Professor%20Sausages%20%E2%80%94%20On-chain
It answered our last check on 18 October 2026 in 303 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by professorsausages.com and served from x402.professorsausages.com, the vendor's own domain: https://x402.professorsausages.com/mcp/onchain.
12, as returned by the server's own tools/list on 31 August 2026: address_screen, chain_info, ens_resolve, find_data, gas_compare, gas_price, nft_scam_check, pricing, and 4 more.
It answered our last check on 18 October 2026 in 303 ms. Over 10 checks since 5 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://x402.professorsausages.com/mcp/onchain. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: com.professorsausages. Endpoint host: x402.professorsausages.com. ARD identifier: urn:air:com.professorsausages:mcp:sausage-onchain.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.