{
  "tool_id": "art-705-bond-ladder-builder",
  "kernel_id": "art-705-bond-ladder-builder",
  "display_name": "Bond Ladder Builder",
  "tool_version": "1.0.0",
  "mandate_type": "analytics_mandate",
  "purpose": "Builds a target-weight bond ladder from a total notional split across maturity rungs and reports rung-by-rung and portfolio risk analytics: each rung's price, Macaulay and modified duration, DV01 and convexity (the same formulas as compute_bond_duration, compute_dv01 and compute_convexity applied at each rung's notional), plus the target_weight-weighted portfolio aggregates. Every reinvestment assumption is named in plain sentences in the output: hold_to_maturity (cash held at 0%) or roll_to_longest_rung (coupons and maturing principal reinvested at the longest rung's yield), and rung target weights must sum to 1 within 1e-9 or the tool refuses, naming the sum. Exclusions: no credit spread, no call features, flat yield per rung, no live data.",
  "control_description": "Builds a target-weight bond ladder from a total notional split across maturity rungs and reports rung-by-rung and portfolio risk analytics: each rung's price, Macaulay and modified duration, DV01 and convexity (the same formulas as compute_bond_duration, compute_dv01 and compute_convexity applied at each rung's notional), plus the target_weight-weighted portfolio aggregates. Every reinvestment assumption is named in plain sentences in the output: hold_to_maturity (cash held at 0%) or roll_to_longest_rung (coupons and maturing principal reinvested at the longest rung's yield), and rung target weights must sum to 1 within 1e-9 or the tool refuses, naming the sum. Exclusions: no credit spread, no call features, flat yield per rung, no live data.",
  "declared_inputs": [],
  "declared_outputs": [],
  "kernel_digest": "sha256:970caa8ad9d2832a8a9eb606726654fa1529c9669bee6a67cd0042ed88929bdb",
  "trust_label": "independently verified: zkVM execution proof (risc0/groth16-bn254)",
  "data_vintage": "2026-10-16",
  "last_validated": "2026-10-16",
  "conformance_fixtures_vendored": true,
  "compute_proof_ready": "ready",
  "wave": 124,
  "source_url": "https://ainumbers.co/chaingraph/art-705-bond-ladder-builder.html",
  "generated_at": "2026-10-17T03:30:28.848Z"
}