Plumb Data Exchange

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "plumb-data-exchange": {
      "type": "http",
      "url": "https://numba2witcheese.tail7d8d44.ts.net:10000/pde-mcp"
    }
  }
}

12 tools

• convert_to_csv

  Convert a table to CSV without changing any value; verified by round-trip. Costs $0.05 USDC (x402).

• deduplicate

  Remove duplicate rows by exact key, keeping the first or last, and report conflicting columns per group. Costs $0.05 USDC (x402).

• reconcile

  Compare two versions of a table by key: rows added, removed and changed (with the changed columns). Costs $0.05 USDC (x402).

• verify_payment

  Verify an on-chain payment without trusting any RPC: did this tx transfer at least this amount of a token (default USDC) to this payee, optionally from this payer? Proven by Plumb (Base via proof-backed L1 checkpoints, Ethereum via a light client, XRP Ledger via a quorum of…

• try_verify_payment

  Free: the same verification as verify_payment, limited to 3 NEW claims per client per day (asking again about a claim already checked is always free).

• get_verification

  Free. Current state of a verification by checkId; re-checks it once its retry or challenge time has passed.

• watch_verification

  Free for a PAID check: add a callback (https) that receives signed events when requiredLevel is reached, when the answer changes, when it becomes final, or when checking gives up. The service re-checks on its own.

• verify_payments_batch

  Verify up to 25 payments in one call for $0.25 ($0.05 when every claim is on the XRP Ledger) USDC (x402): give `claims` (same fields as verify_payment) or `csv` (header: chain,txHash,payee,token,minAmountRaw,payer,logIndex,invoiceId). Claims already checked cost nothing; if all…

• get_verifications

  Free. Up to 50 checks at once (re-checked when due), as rows; format "csv" adds a reconciliation CSV.

• check_x402_receipt

  Free. Cross-check a seller's signed x402 offer + receipt (offer-and-receipt extension): verifies the signatures (official x402 functions; pin the seller with sellerAddress for EIP-712 or sellerJwk for JWS), checks offer and receipt agree, and returns the exact `claim` to prove…

• what_should_i_build

  What should I build? x402 agent demand by category from public chain data (Base USDC + XRPL), with fake demand removed (testers, sellers paying themselves, loops; wallet fleets counted as one buyer) and gaps ranked (repeat buyers per seller). Rolling 7 days, refreshed every 2 h…

• get_job

  Free. Status and (once verified) the result of a paid job, using the accessToken its paid call returned.

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