{
  "tool_id": "art-549-g20-corridor-cost-gap",
  "tool_version": "1.0.0",
  "display_name": "G20/FSB Corridor Cost-Gap Calculator",
  "mcp_name": "check_g20_corridor_cost_gap",
  "mandate_type": "risk_parameter",
  "wave": 90,
  "gpu": false,
  "url": "https://ainumbers.co/chaingraph/art-549-g20-corridor-cost-gap.html",
  "description": "Recomputes a caller-declared cross-border payment corridor's cost gap against the hardcoded G20/FSB roadmap targets: retail cross-border payments end-2027 (no more than 1% global average, no more than 3% any corridor) and remittances 2030 (no more than 3% global average, no more than 5% any corridor). The caller supplies the corridor's observed total-cost percentage (as integer basis points), sourced from World Bank Remittance Prices Worldwide (RPW, methodology Q325) or elsewhere; this kernel never vendors RPW's own corridor cost table, only the published target arithmetic. Zero live FX/rate calls. These are transparency and benchmarking targets, not an enforceable deadline against any single firm -- not a compliance-gate. Not the US Reg E remittance disclosure recompute (see art-reg-e-remittance-disclosure-check for that).",
  "input_schema_ref": "chaingraph/art-549-g20-corridor-cost-gap.html#manifest",
  "consumes": [],
  "feeds": [],
  "status": "live",
  "conformance_fixtures": true,
  "compute_capability": "server",
  "compute_images": [
    {
      "system": "sha256-source",
      "image_id": "sha256:466123f62f6e6d1ee5414ed2b8d39004b3677e2cac5a9934c3c146bb1568975d",
      "valid_from": "2026-07-10"
    },
    {
      "system": "risc0",
      "image_id": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
      "valid_from": "2026-08-04"
    }
  ],
  "compute_proof_ready": "ready",
  "deferred_reason": "New shard; awaiting the async GPU proving queue (S18 steady-state).",
  "export_capability": [
    "json"
  ],
  "compute_proof": {
    "type": "ZkVmReceipt",
    "system": "risc0",
    "receiptFormat": "groth16-bn254",
    "imageId": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
    "seal": "LKN04sn+e8RIBaiPLvtkWYB5qDAzEUTK4TPMfZWYEZ0la1QIYFDxN+XK/+RAZ0jWf6+N0D78IkQKIByvZ3/o0gsQiNExC8KLH7+2d+ZmFJU77KSwy21bfBvnsWlg097KDixaVFuuAyeWCxNQXzPgXmk6IQVz8K/K79+h+PK6iHYSjiOErdU5rgiuBI3YMySy9Xv4+aXsSZVxyV1VvnqRexzBDGCkc84EPdzAHzLenCCuxezUVorWJIGySlpZs51YLRs1PhYdc0XgeVHNcyxzIwFIeOICWH2q4yzEmzYGd9QrONtBZtD91XDyYNOH43pT1WKERh0xzRtIbYtKDcVEeQ==",
    "journal": {
      "chaingraph_version": "0.4.0",
      "kernel_digest": "sha256:466123f62f6e6d1ee5414ed2b8d39004b3677e2cac5a9934c3c146bb1568975d",
      "output": {
        "as_of": "2026-08-01",
        "corridor_pair": {
          "receive_country": "MX",
          "send_country": "US"
        },
        "gap_bps": -50,
        "gap_pct_display": "-0.50%",
        "meets_target": true,
        "note": "Deterministic recompute of a caller-declared corridor's cost gap against the hardcoded G20/FSB roadmap target for the declared year. Zero live FX/rate calls; the caller supplies the observed cost, sourced from World Bank RPW or elsewhere, and this kernel never embeds or vendors RPW's own corridor cost table. Targets are transparency/benchmarking figures, not an enforceable deadline against any single firm.",
        "observed_cost_bps": 250,
        "observed_cost_display": "2.50%",
        "rationale": [
          "Corridor US→MX, observed cost 2.50% on the USD 200 RPW basket, checked against the 2027 target (\"G20/FSB 2027 retail target: ≤1% global avg / ≤3% any corridor\").",
          "gap_pct = observed 2.50% - target 3.00% (any-corridor ceiling) = -0.50%. Corridor meets the target.",
          "Global-average target for this year (1.00%) is reported for context only -- it describes the overall market average, not this single corridor, and is not itself checkable from one corridor's observed cost.",
          "These are G20/FSB roadmap targets, not an enforceable deadline against any single firm. This is a transparency/benchmarking recompute, not a compliance-gate verdict.",
          "Corridor cost table sourced by the caller from World Bank Remittance Prices Worldwide (RPW) (methodology Q325, https://remittanceprices.worldbank.org/methodology) or elsewhere; this kernel does not embed or vendor RPW's own corridor cost data."
        ],
        "rejected_inputs": [],
        "rpw_methodology": {
          "name": "World Bank Remittance Prices Worldwide (RPW)",
          "url": "https://remittanceprices.worldbank.org/methodology",
          "version": "Q325"
        },
        "send_amount_basis": "USD_200",
        "target_any_corridor_bps": 300,
        "target_any_corridor_display": "3.00%",
        "target_basis": "G20/FSB 2027 retail target: ≤1% global avg / ≤3% any corridor",
        "target_global_avg_bps": 100,
        "target_global_avg_display": "1.00%",
        "target_scope": "retail cross-border payments",
        "target_year": 2027
      }
    }
  }
}