Concepts
Hub for Platform pages. KYC, idempotency, webhooks, fees, errors, audit, and on-chain risk monitoring.
Hub for BlendFi's Platform pages. Each page explains a specific aspect of how BlendFi operates behind the API.
Platform
Idempotency
Why every mutating call needs an `Idempotency-Key` and how to pick keys.
Errors and retries
Error response shape, retry policy, and how to use `request_id` with support.
KYC
The two KYC tiers (platform and crypto), states, webhooks, errors.
Webhooks
The 14 event types, signature verification, retries, replay window.
Fees
The two fee modes, `org_funded` and `customer_funded`, and how the net settles.
Transaction limits
How BlendFi caps transaction volume across three layers, platform, partner, and end user, and how to request a raise.
Audit events
Every state change on every BlendFi resource is recorded in an immutable log.
On-chain monitoring and risk
Every USDT deposit is evaluated in real time before acceptance.
Looking up a term?
The Glossary is the alphabetical reference for every domain term used across these docs, with definitions for Pix, USDT, DICT, Polygon, Ethereum, Solana, on-chain, and more.