Changelog

All notable changes to the CryptaChain API are documented here. Format follows keepachangelog.com.

[Unreleased] - 2026-05-16

OpenAPI specification — operation descriptions

Every one of the API's 341 handler methods now ships with a description on its @Operation annotation in addition to the existing summary. The description is a 2-3 sentence note grounded in the method body and immediate service-layer behaviour, covering what the operation does, what it returns, and which preconditions or side effects matter to callers.
The generated OpenAPI spec at https://api.cryptachain.com/v3/api-docs now exposes those descriptions on every operationId. Tools that consume the spec (Postman/Insomnia import, codegen, AI agents that index the API) will start surfacing the longer prose alongside the short summary.
Spectral linting in CI was upgraded: operation-summary and operation-description are now both enforced as error, preventing future controllers from shipping with placeholder or missing docs.
Path / query parameters across the admin and billing surfaces also gained @Parameter(description=…) annotations where the meaning wasn't obvious from the name (e.g. stateCode on the US-nexus endpoints, entityType on the audit log endpoint).
No request/response shapes changed — this is a pure documentation update.

Core API

Compliance Screening

Sanctions screening (OFAC SDN, EU Consolidated, UN Security Council, UK HMT, OpenSanctions)
Threat intelligence database (darknet markets, mixers, ransomware, scams)
Entity attribution database (exchange identification, VASP labeling)
Fast screening mode (~20ms synchronous) and Full mode (async heuristics)
Risk scores (0-100) with severity levels (LOW/MEDIUM/HIGH/CRITICAL)

Pricing

Fair market value via VWAP methodology aggregated across multiple centralized spot markets
Historical price data back to 2011
36 fiat currencies (31 ECB + 5 USD-pegged)
FX daily rates and monthly averages (IAS 21 compliant)
1-minute precision pricing for timestamp lookups

Developer Portal

Infrastructure

SDKs