---
title: "Large Exposures Limit Check"
method: POST
path: "/v1/tools/compute_large_exposures_limit"
tags: ["TODO_TAGS_REVIEW", "TODO_AP2_EXPORT_REVIEW"]
---

# Large Exposures Limit Check

`POST /v1/tools/compute_large_exposures_limit`

## Request

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

Basel III large exposures framework (BCBS 283) and U.S. single-counterparty credit limits (Regulation YY, 12 CFR 252 Subpart H) limit check: aggregates each counterparty's gross exposure net of eligible credit-risk-mitigation, rolls connected/economically-interdependent counterparties into one group exposure, then checks the group against Tier 1 capital under the general 25% limit or the tighter 15% GSIB-to-GSIB limit. Emits a breach-list artifact of every group exceeding its applicable limit. Deterministic point-in-time calculation from caller-supplied exposure, CRM, and capital figures for a single reporting date.

**Tool URL:** https://ainumbers.co/chaingraph/art-425-large-exposures-limit-check.html

## Request body

- object
  - `caller_is_gsib` boolean, required
  - `counterparties` object[], required: type not evidenced by kernel source
    - `connected_group_id` unknown
  - `tier1_capital_musd` number

## Response `200`

Successful tool execution result

- object
  - `breach_list` unknown[]
    - unknown
  - `caller_is_gsib` boolean
  - `counterparties` object[]
    - `connected_group_id` string
    - `counterparty_id` string
    - `counterparty_name` string
    - `is_gsib` boolean
    - `net_exposure_total_musd` integer
  - `groups` object[]
    - `applicable_limit_musd` integer
    - `applicable_limit_pct` integer
    - `breached` boolean
    - `exposure_pct_of_tier1` integer
    - `group_id` string
    - `gsib_to_gsib` boolean
    - `is_connected_group` boolean
    - `member_counterparty_ids` string[]
    - `net_exposure_total_musd` integer
  - `note` string
  - `regulatory_basis` string
  - `tier1_capital_musd` 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)