Who it is for
Fintechs, neobanks and exchanges putting customer balances to work; payment companies holding float; and treasuries earning on their own reserves. Two integration guides walk the common shapes end to end — a treasury portfolio and a neobank or exchange customer portfolio.What you can hold
Four categories currently, all reached through the same endpoints. Tokenized funds cover tokenized treasury and money-market exposure such as Invesco Short Duration US Government Securities and Janus Henderson Anemoy Treasury. Structured credit covers the Janus Henderson Anemoy AAA CLO fund alongside Figure PRIME and AUTO. Institutional credit is available through Maple, and onchain lending through curated vaults on Aave, Morpho and Kamino. Stocks and fixed income products are coming soon. The catalog is live and is updated often with new products. Yield sources describes yield sources, rate semantics, NAV freshness and liquidity terms.GET /v2/public/yield-sources returns the public catalog; sources available to your
organization may differ.
What comes with the API
- Risk. The Ground Risk Engine takes absolute or velocity-based rules on APY, liquidity and utilization, and what should happen when one triggers. Portfolio Wallets and MicroVaults carry it; gTokens do not.
- Reporting. Yield and activity accounting are generated for you and readable from
both the dashboard and the API —
accounting activity,
yield period summaries and
computed yield. Each is scoped by
walletId, so figures resolve to an individual end user and not only to the organization total. - Custody. Every implementation is non-custodial. Signing keys stay with your organization or your users; Ground never holds them. Security covers the signing model, wallet types per chain and the independent review.
- Chains. Ground handles routing and bridging across supported chains, so you do not need to move assets off the chain you are already on.
Choose an implementation
Ground exposes the same yield sources through three implementations. The right one depends on your stack.MicroVaults are in private preview for enabled sandbox organizations on Ethereum Sepolia.
Production and Ethereum mainnet are not yet supported.
Reach the API
Sign up for the Ground Dashboard to create an organization and issue an API key. Self-serve production access supports up to two Portfolio Wallets and $100 in cumulative withdrawals. Contact Ground for full production access.ethereum_sepolia and may expose a
smaller yield-source catalog than production.
API Conventions covers authentication,
pagination, idempotency, rate limits, and error handling.
API reference
Each implementation has a separate API reference tab. Endpoints are grouped by resource and can be called against sandbox with your own key when your organization has access.Portfolio Wallet API
Wallets, deposits, withdrawals, approvals, accounting, and webhooks.
MicroVault API
Vaults, strategies, fees, shareholders, redemptions, and performance.
gToken API
Yield sources, direct access allowlists, fee wrappers, and webhooks.
Start building
Use Agentic Installation to choose a product by balance ownership and signer, then validate a full sandbox round trip with your coding agent.Quickstart
Create a sandbox wallet, fund it, and track a withdrawal.
Yield sources
The catalog behind every implementation, and how to build a strategy from it.
Operating in production
- Supported chains — where deposits and payouts settle.
- Webhooks and polling — how to follow state you do not control synchronously.
- Custody model — who can move funds, and what Ground can and cannot do.
- Changelog — API and documentation changes.