---
title: "SWIFT / ISO 20022 PQC Readiness Checker"
method: POST
path: "/v1/tools/check_iso20022_pqc_readiness"
tags: ["TODO_TAGS_REVIEW", "TODO_AP2_EXPORT_REVIEW"]
---

# SWIFT / ISO 20022 PQC Readiness Checker

`POST /v1/tools/check_iso20022_pqc_readiness`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/check_iso20022_pqc_readiness`
- Auth: none declared

Scores SWIFT/ISO 20022 PQC readiness with BAH signature-bloat sizing per the BIS Project Leap Phase 2 model (ML-DSA ~12.9x RSA payload at BAH level). Models new message sizes against current limits and flags size breaches. Reuses HNDL priority from tool 500.

**Tool URL:** https://ainumbers.co/chaingraph/art-87-iso20022-pqc-readiness-checker.html

## Request body

- object
  - `hndl_priority_ref` string: type not evidenced by kernel source
  - `messaging` unknown
  - `pqc_algorithm` string: type not evidenced by kernel source

## Response `200`

Successful tool execution result

- object
  - `affected_message_types` unknown[]
    - unknown
  - `algorithm_refs` object
    - `bah_wrapper_bytes` integer
    - `ml_dsa_sizes` object
      - `ML-DSA-44` integer
      - `ML-DSA-65` integer
      - `ML-DSA-87` integer
    - `pqc_algorithm` string
  - `bis_leap_bloat_factor` number
  - `bis_leap_ref` string
  - `bloat_factor` number
  - `current_sig_bytes` integer
  - `hndl_priority_ref` string
  - `new_message_size_bytes` integer
  - `new_sig_bytes` integer
  - `note` string
  - `readiness_score` integer
  - `reference_version` string
  - `size_breach` 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)