Stablecoin Remittance Corridor 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.

Linear two-step chain for stablecoin remittance corridor economics analysis. Step 1 models the all-in cost of a USDC-based corridor: on-ramp fee, chain/gas fee, off-ramp/local-rail fee, FX spread, and pre-funding float savings vs correspondent banking. It also computes gross/net cost in bps and %, savings vs a traditional MTO, and break-even send amount. Step 2 benchmarks total cost against the World Bank RPW Q1 2026 snapshot for the same origin-destination corridor and the SDG 10.c 3% target. Both steps always run. Rail-agnostic; defaults from the Felix/Circle USDC corridor (US to MX). No personal data is processed.

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

Chain Stages · 2 Steps · Linear

1 ROOT node

Stablecoin Corridor Economics Model art-250-model-stablecoin-corridor-economics

Models USDC corridor all-in cost: on-ramp fee, chain gas fee, off-ramp/local-rail fee, FX spread, pre-funding float savings. Returns gross/net cost in bps and %, savings vs traditional MTO benchmark, and break-even send amount. Rail-agnostic. Passes gross_cost_pct to corridor benchmarking.

MCP Call · model_stablecoin_corridor_economics

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "model_stablecoin_corridor_economics",
    "arguments": {
      "send_amount_usd": 1000,
      "on_ramp_fee_pct": 0.5,
      "chain_fee_usd": 0.01,
      "off_ramp_fee_pct": 0.3,
      "fx_spread_pct": 0.2,
      "float_savings_rate_pct": 4.0,
      "float_days": 0,
      "correspondent_cost_pct": 6.0
    }
  },
  "id": 1
}

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2 TERMINAL node

Corridor Cost Comparator (World Bank RPW) art-249-compare-corridor-cost

Benchmarks total cost (fee % + FX margin %) against World Bank RPW Q1 2026 snapshot for the origin-destination corridor, SmaRT global average (6.36%), and SDG 10.c 3% target. Returns meets_sdg_target, vs_rpw_benchmark, cost_at_200_usd, and cost_at_500_usd. Final stage.

MCP Call · compare_corridor_cost

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "compare_corridor_cost",
    "arguments": {
      "from_country": "US",
      "to_country": "MX",
      "send_amount": 1000,
      "provider_fee": 10.01,
      "fx_rate_used": 17.15,
      "fx_rate_mid": 17.20,
      "service_name": "Felix-USDC-all-in"
    }
  },
  "id": 2
}

Question: Treasury wants US to Mexico payouts on a stablecoin rail. What does a 1,000 dollar transfer really cost? Run the AINumbers MCP tool `run_chain` with {"chain":"stablecoin-remittance-corridor-economics"} and read `art-250-model-stablecoin-corridor-economics.net_cost_pct`. Re-run with `inputs` for `art-250-model-stablecoin-corridor-economics`, reusing the values that result echoed, with `off_ramp_fee_pct` set to 4. 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/stablecoin-remittance-corridor-economics.html

Stablecoin Remittance Corridor Economics

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