---
title: "CSDR Cash-Penalty Calculator"
method: POST
path: "/v1/tools/calculate_csdr_penalty"
tags: ["TODO_TAGS_REVIEW", "TODO_AP2_EXPORT_REVIEW"]
---

# CSDR Cash-Penalty Calculator

`POST /v1/tools/calculate_csdr_penalty`

## Request

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

Flagship. Computes the CSDR cash penalty for a settlement fail: selects the asset-class daily rate (incl. Oct-2025 RTS increases: equities 1 bp/day, SSA bonds 0.50 bp/day, non-SSA bonds 0.50 bp/day), applies fail duration and reference price/notional, credits partial settlement, and projects forward penalty exposure over an open-fails set.

**Tool URL:** https://ainumbers.co/chaingraph/art-78-csdr-penalty-calculator.html

## Request body

- object
  - `fail` unknown
  - `open_fails` unknown
  - `rate_table_version` unknown

## Response `200`

Successful tool execution result

- object
  - `asset_class` string
  - `batch_detail` string
  - `batch_total_exposure` integer
  - `daily_rate_bps` integer
  - `fail_days` integer
  - `note` string
  - `notional` integer
  - `partial_credit` integer
  - `partial_settled_pct` integer
  - `penalty_amount` integer
  - `penalty_type` string
  - `rate_table_version` string
  - `reference` object
    - `note` string
    - `regulation` string
    - `rts` string
  - `reference_price` integer

---

[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)