Reference

Use this index to find an endpoint quickly. For a deep, click-through view of every operation with built-in Try it, jump straight to the /playground — it loads the live OpenAPI spec and is the canonical reference at request granularity.

Endpoint groups

Group	Base path	Doc
Wallets	/v1/wallets/{address}/...	Walkthrough · Transfer history · Balances · Token transfers · Blockchain data
Prices	/v1/prices/...	Walkthrough · By symbol · Methodology
FX	/v1/fx/...	Rates · Monthly average · Currencies
Screening	/v1/screen/...	Walkthrough · Overview · Modes · Risk scores
DeFi	/v1/wallets/{address}/defi-positions, /v1/defi/refresh	DeFi guide
ABI	/v1/abi/...	ABI lookup
Chains	/v1/chains/{chain}/...	Blockchain data · Chain IDs
Webhooks	/v1/webhooks/...	Overview · Verify · Events
Status / health	/v1/status/..., /v1/health/...	Coverage · Chains

Quick links

Topic	Doc
Quick start (5 min)	/quickstart
Authentication	/authentication
Rate limits	/rate-limits
Errors	/errors
Credits & billing	/credits
SDKs (TypeScript / Python / Java)	/sdks
Changelog	/changelog

Conventions

• Base URL: https://api.cryptachain.com
• Auth: X-API-Key: csk_{tier}_{32hex} header on every request
• Versioning: every public endpoint is under /v1/. Breaking changes go to /v2/; deprecations carry a six-month overlap window. See the changelog.
• Pagination: cursor-based on every list endpoint — pass back the response cursor until hasMore is false. Max page size is 1000.
• Timestamps: ISO 8601 UTC strings everywhere. Internally stored at sub-second precision; surfaced with second precision on transfer feeds, minute precision on price feeds.
• Addresses: lower-cased on storage for EVM chains; case-sensitive for Bitcoin / TRON / Solana. Request input is normalised — pass either case for EVM.
• Numbers: amounts are decimal strings (not float) to avoid precision loss on uint256 values. USD valuations are floats (precision is sufficient for fiat).

Interactive reference

Every operation in the OpenAPI spec is browsable with built-in Try it at /playground. The spec is auto-generated from the live API on every deploy.

Raw OpenAPI JSON: https://api.cryptachain.com/v3/api-docs. Feed that to openapi-generator if you want an SDK in a language we do not officially support.