All servers · Agent payments (x402) · Payments & accounting

Plumb Data Exchange

io.github.Mlcharle518/plumb-data-exchange · v1.1.0

Measured by MCP Station

Description written by the publisher, not verified

Verified table jobs and RPC-free payment verification (Base/Ethereum). Pay per call via x402.

Connect

claude mcp add --transport http plumb-data-exchange https://numba2witcheese.tail7d8d44.ts.net:10000/pde-mcp

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

Tools as reported by the server

• 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 Ripple's validator list:
• 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). Holders of the exchange's on-ledger ProvenPayer credential get more: pass xrplProof (see credential_status).
• 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 of them were, nothing
• 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 with verify_payment. P
• 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. Signed answer with s
• credential_status
  Free. The exchange's on-ledger ProvenPayer credential (XLS-70): issued to an XRPL account after 2 settled, Plumb-proven payments to the house; readable by any seller with ledger_entry. Returns the account's standing, the issued credential (with the CredentialCreate hash, provable with plumb-xrpl), h
• prove_xrpl_transaction
  Prove any XRP Ledger transaction without trusting a server: validator-list quorum, hash links, rebuilt tx tree. Returns full fields, metadata (balances, escrows, channels, credentials as of the tx), quorum evidence and a signed receipt. Unvalidated tx keeps your payment.
• get_job
  Free. Status and (once verified) the result of a paid job, using the accessToken its paid call returned.

Tool changes

• 2026-10-21: convert_to_csv, deduplicate, reconcile, verify_payment, try_verify_payment, get_verification, watch_verification, verify_payments_batch, get_verifications, check_x402_receipt, what_should_i_build, credential_status
• 2026-10-20: convert_to_csv, deduplicate, reconcile, verify_payment, try_verify_payment, get_verification, watch_verification, verify_payments_batch, get_verifications, check_x402_receipt, what_should_i_build, credential_status
• 2026-10-16: convert_to_csv, deduplicate, reconcile, verify_payment, try_verify_payment, get_verification, watch_verification, verify_payments_batch, get_verifications, check_x402_receipt, what_should_i_build, get_job

Website · JSON · Text for agents · Registry updated 2026-10-07