---
title: "Basel 2023-vs-2026 Capital-Delta Comparator"
method: POST
path: "/v1/tools/compare_basel_2023_vs_2026"
tags: ["TODO_TAGS_REVIEW", "TODO_AP2_EXPORT_REVIEW"]
---

# Basel 2023-vs-2026 Capital-Delta Comparator

`POST /v1/tools/compare_basel_2023_vs_2026`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/compare_basel_2023_vs_2026`
- Auth: none declared

Runs the same portfolio through the 2023 Basel III Endgame NPR risk-weight framework and the 2026 reproposal (2026-03-19, three NPRs) framework, then reports the RWA and minimum-capital delta -- the 'reproduce the $87.7bn relief story on OUR book' tool. Representative credit-risk asset-class risk-weight buckets plus a simplified operational-risk SMA business-indicator coefficient, NOT an exhaustive regulatory table. rule_status:'proposed' -- final rule expected ~Q4 2026, re-pin WU pre-authorized at finalization. References compute_rwa_erba_2026 (art-355) and compute_oprisk_sma_2026 (art-356) by tool_id for future chain wiring.

**Tool URL:** https://ainumbers.co/chaingraph/art-357-basel-2023-vs-2026-capital-delta-comparator.html

## Request body

- object
  - `business_indicator` unknown, required
  - `exposures` unknown[], required
    - unknown

## Response `200`

Successful tool execution result

- object
  - `business_indicator` integer
  - `constants_version` string
  - `credit_rwa_2023` integer
  - `credit_rwa_2026` integer
  - `delta_capital` integer
  - `delta_capital_pct` number
  - `delta_rwa` integer
  - `direction` string
  - `disambiguation` string
  - `op_capital_2023` integer
  - `op_capital_2026` integer
  - `op_rwa_2023` integer
  - `op_rwa_2026` integer
  - `portfolio_summary` object[]
    - `amount` integer
    - `asset_class` string
    - `rw_2023` number
    - `rw_2026` number
    - `rwa_2023` integer
    - `rwa_2026` integer
  - `referenced_tool_ids` object
    - `erba_2026` string
    - `oprisk_sma_2026` string
  - `rule_status` string
  - `source` string
  - `total_capital_2023` integer
  - `total_capital_2026` integer
  - `total_rwa_2023` integer
  - `total_rwa_2026` integer
  - `unrecognized_asset_class` boolean

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)