Tempo Fee-Sponsorship & Gas-AMM Economics

Note (dated 2026-08-04): a chain composes independent computations performed in an analytical order. No step's output is carried into the next step by the execution model; each step computes from its own declared inputs. This is true of every chain on this site, including chains whose per-step copy below reads as a data handoff.

Model Tempo's enshrined-AMM gas cost paid in any major stablecoin plus server-paid fee sponsorship, vs card/SWIFT/ACH baselines. Distinct from Arc Paymaster: Tempo has no native gas token and uses an enshrined AMM, not ERC-4337.

OpenChainGraph · 2 Steps treasury mandate Hash-Anchored §4 chain_depth:2 Client-Side · Zero PII

Chain Stages · 2 Steps

1 ROOT · D0 node

Tempo Payment Economics art-35-tempo-payments-business-case

volume, corridor mix, baseline fees feed Stage 2 gas economics

MCP Call · model_tempo_payment_economics

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "model_tempo_payment_economics",
    "arguments": {}
  },
  "id": 1
}

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2 TERMINAL · D2 node

Tempo Gas Economics art-107-tempo-gas-economics

Exports composite gas-economics artifact (blended gas cost, sponsorship break-even, per-tx saving) — final stage

MCP Call · model_tempo_gas_economics

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "model_tempo_gas_economics",
    "arguments": {}
  },
  "id": 1
}

Export Artifacts

Download the §4 chain definition artifact (hash-anchored composite JSON) or the §13.11 W3C Verifiable Credentials view. Both derive from the chain definition — no new hash is minted. Available after hash computation.

Question: If we sponsor gas on every payment, at what monthly volume does sponsorship stop paying for itself? Run the AINumbers MCP tool `run_chain` with {"chain":"tempo-gas-economics"} and read `art-107-tempo-gas-economics.sponsorship_breakeven_tx`. Re-run with `inputs` for `art-107-tempo-gas-economics`, reusing the values that result echoed, with `server_paid_pct` set to 100. Compare the same field. Verify: call `verify_execution_hash` (https://mcp.ainumbers.co/mcp) with `claimed_hash` set to `composite_execution_hash` and the full `composite_artifact`. Ledger, for a human re-check: https://ledger.ainumbers.co/ PII rule: send synthetic or anonymised inputs only. The MCP server runs these kernels and logs no payloads. Chain page: https://ainumbers.co/chaingraph/chains/tempo-gas-economics.html

Tempo Fee-Sponsorship & Gas-AMM Economics

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