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Professor Sausages — On-chain

R0· no sign-in

EVM gas, Chainlink prices, token-safety, swap quotes, ENS, OFAC & NFT via x402.

v1.0.1 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality79good
Trust79of 100
Uptime, 30 days96%
Latency p50426 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "sausage-onchain": {
      "type": "http",
      "url": "https://x402.professorsausages.com/mcp/onchain"
    }
  }
}
claude mcp add --transport http sausage-onchain https://x402.professorsausages.com/mcp/onchain
[mcp_servers.sausage-onchain]
url = "https://x402.professorsausages.com/mcp/onchain"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sausage-onchain": {
      "type": "remote",
      "url": "https://x402.professorsausages.com/mcp/onchain",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "sausage-onchain": {
      "type": "http",
      "url": "https://x402.professorsausages.com/mcp/onchain"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=sausage-onchain&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8veDQwMi5wcm9mZXNzb3JzYXVzYWdlcy5jb20vbWNwL29uY2hhaW4ifQ%3D%3D"
}
{
  "servers": {
    "sausage-onchain": {
      "type": "http",
      "url": "https://x402.professorsausages.com/mcp/onchain"
    }
  }
}
{
  "mcpServers": {
    "sausage-onchain": {
      "httpUrl": "https://x402.professorsausages.com/mcp/onchain"
    }
  }
}
extensions:
  "sausage-onchain":
    enabled: true
    name: "sausage-onchain"
    type: streamable_http
    uri: "https://x402.professorsausages.com/mcp/onchain"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene71 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: find_data (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); request_data (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); spot_price (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
  • pass
    tools.token_costabout 3,003 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

12 tools, about 3,003 tokens to load them all · tool set 1282787fb2e9 · checked 2026-10-20 21:18 UTC

Tool changes

No 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.

Trust 79 / 100

no-repository
provenance55
liveness98
freshness85
hygiene80

+dns-namespace +website +reachable +uptime-96% ~updated-67d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://x402.professorsausages.com/mcp/onchain streamable-httpnoneyes96%426 ms2025-06-182026-10-20

Tools (12)

address_screenScreen 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, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
chain_infoCanonical 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_addEthereumChain object; view='search' finds chains by name or symbol; view='l2s' lists a parent chain's L2s. Paid: call without x_payment to receive this call's exact terms (amount, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
ens_resolveResolve 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='avatar' dereferences the avatar to an image URL. Paid: call without x_payment to receive this call's exact terms (amount, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
find_dataDescribe 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 returns matching endpoints with method, URL, price, and how to call them. Free.
gas_compareRank 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), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
gas_priceBid-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 fee naive estimators miss. Paid: call without x_payment to receive this call's exact terms (amount, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
nft_scam_checkDeterministic 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. Paid: call without x_payment to receive this call's exact terms (amount, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
pricingEvery 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_dataThe 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 want to hear back. Free.
spot_priceLive 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 terms (amount, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
swap_quoteIndicative 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, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.
token_safetyHeuristic 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 (amount, asset, network), sign them, then call again with x_payment. The free `pricing` tool lists every price at once.

Schemas: list_tools.

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More from com.professorsausages

Official server.json
{
  "name": "com.professorsausages/sausage-onchain",
  "title": "Professor Sausages — On-chain",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://x402.professorsausages.com/mcp/onchain",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.1",
  "websiteUrl": "https://x402.professorsausages.com/mcp",
  "description": "EVM gas, Chainlink prices, token-safety, swap quotes, ENS, OFAC & NFT via x402."
}