---
title: "Halt + Staleness Collateral Haircut"
method: POST
path: "/v1/tools/compute_stock_token_collateral_haircut"
tags: ["TODO_TAGS_REVIEW"]
---

# Halt + Staleness Collateral Haircut

`POST /v1/tools/compute_stock_token_collateral_haircut`

## Request

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

Layers a feed-staleness, sequencer-downtime, and underlying-halt haircut on top of a base repo haircut for Robinhood Chain stock tokens posted as collateral. 46 percent of first-week stock-token transfers settled outside NYSE hours, and the docs name Chainlink staleness checks plus Arbitrum sequencer-uptime validation as required practice. Downstream of check_tokenized_collateral_eligibility and calculate_repo_haircut in the collateral-haircut chain. Returns a liquidation-risk classification: normal, elevated, or blocked. Zero network, zero PII.

**Tool URL:** https://ainumbers.co/chaingraph/art-320-rhc-collateral-haircut.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `base_haircut` unknown
  - `current_time` unknown
  - `feed_round` unknown
  - `position_value` unknown
  - `sequencer_uptime` unknown
  - `underlying_market_state` unknown

## Response `200`

Successful tool execution result

- object
  - `adjusted_collateral_value` integer
  - `base_haircut` number
  - `extra_haircut` integer
  - `feed_stale` boolean
  - `final_haircut` number
  - `liquidation_risk` string
  - `sequencer_down_grace_expired` boolean
  - `sequencer_down_within_grace` boolean
  - `underlying_halted` boolean
  - `verdict` string

---

[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)