Exponential
Exponential.fi is a DeFi company (backed by Paradigm and Norwest Venture Partners) behind YO Protocol — a cross-chain "Yield Optimizer" that automatically allocates deposits across the best-performing liquidity pools on multiple blockchains to deliver the highest risk-adjusted yield, using Exponential.fi's own Risk Ratings to balance risk and reward. yoVaults are ERC-4626 tokenized vaults (yoUSD, yoETH, yoBTC, yoEUR, yoGOLD, yoSOL and more) with ERC-7540-style async redemption, all routed through the single yoGateway entry point. The developer surface spans a public read API (api.yo.xyz), a first-party TypeScript SDK/React kit/CLI (@yo-protocol/*), official agent skills and a Base MCP plugin, and the YO Risk Graph — a paid, agent-facing DeFi risk-intelligence API monetized per-call via the x402 USDC micropayment standard on Base.
Exponential publishes 2 APIs on the APIs.io network: YO Protocol API and YO Risk Graph API. Tagged areas include Company, DeFi, Decentralized Finance, Yield, and Yield Optimizer.
Exponential’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, CLI, authentication, and 21 more developer resources.
API Rating
APIs
YO Protocol API
Public read API for YO Protocol. Fetch current vault snapshots (TVL, yield, underlying pools, allocation), pending redeem status, historical yield/TVL time series, and per-user ...
YO Risk Graph API
The YO Risk Graph (Exponential.fi Risk Ratings) as HTTP APIs — a free public Vault Exposure endpoint plus a paid Agent API for risk grading and dependency mapping across pools, ...
MCP Servers
exponential-mcp.yml
MCP SERVERArazzo Workflows
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ARAZZOYO Risk Graph triage
Learn the graph schema, find an entity, read its risk grade and rationale, then map its 1-hop dependencies. Every step settles an x402 micropayment.
ARAZZOYO vault snapshot and user position
Read a vault's current snapshot, yield and TVL history, and a user's pending redemptions.
ARAZZOFinOps
Exponential Finops
FINOPSResources
Get Started 2
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 8
Pagination, idempotency, versioning, errors, and events
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Build 4
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API