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.

40.6/100 thin Agent 69/100 agent native Full breakdown ↓
scored 2026-07-20 · rubric v0.4
2 APIs 1 MCP Servers 0 Features
CompanyDeFiDecentralized FinanceYieldYield OptimizerVaultsERC-4626Cross-chainBlockchainCryptoRiskRisk RatingsAgentsx402Web3

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 40.6/100 · thin
Contract Quality 10.4 / 25
Developer Ergonomics 15.2 / 20
Commercial Clarity 3.7 / 20
Operational Transparency 2.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 69/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/exponential: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

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 SERVER

Arazzo Workflows

_Index

ARAZZO

YO 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.

ARAZZO

YO vault snapshot and user position

Read a vault's current snapshot, yield and TVL history, and a user's pending redemptions.

ARAZZO

FinOps

Resources

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

Scroll for all 8

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

Source (apis.yml)

apis.yml Raw ↑
aid: exponential
name: Exponential
description: 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.
url: https://raw.githubusercontent.com/api-evangelist/exponential/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
- paradigm
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- DeFi
- Decentralized Finance
- Yield
- Yield Optimizer
- Vaults
- ERC-4626
- Cross-chain
- Blockchain
- Crypto
- Risk
- Risk Ratings
- Agents
- x402
- Web3
image: https://raw.githubusercontent.com/api-evangelist/exponential/refs/heads/main/apis.yml
apis:
- name: YO Protocol API
  description: 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 deposit/withdraw history, pending redemptions and
    P&L. No API key required.
  humanURL: https://docs.yo.xyz/integrations/api
  baseURL: https://api.yo.xyz
  tags:
  - Vaults
  - Yield
  - DeFi
  properties:
  - type: OpenAPI
    url: openapi/exponential-protocol-openapi.yml
  - type: Overlay
    url: overlays/exponential-protocol-overlay.yaml
- name: YO Risk Graph API
  description: 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, assets, protocols and chains, monetized per-call
    via x402 USDC micropayments on Base.
  humanURL: https://docs.yo.xyz/yo-risk-graph/agent-api
  baseURL: https://risk.yo.xyz
  tags:
  - Risk
  - Agents
  - x402
  properties:
  - type: OpenAPI
    url: openapi/exponential-risk-graph-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/exponential-domain-security.yml
- type: AgenticAccess
  url: agentic-access/exponential-agentic-access.yml
- type: Website
  url: https://exponential.fi
- type: DeveloperPortal
  url: https://docs.yo.xyz
- type: Documentation
  url: https://docs.yo.xyz
- type: APIReference
  url: https://docs.yo.xyz/integrations/api
- type: GettingStarted
  url: https://docs.yo.xyz/integrations/integration-guides/sdk/getting-started/quickstart
- type: Blog
  url: https://docs.yo.xyz/welcome-to-yo/what-is-yo
- type: GitHubOrganization
  url: https://github.com/yoprotocol
- type: Security
  url: https://docs.yo.xyz/protocol/security-framework
- type: Pricing
  url: https://docs.yo.xyz/yo-risk-graph/agent-api
- type: Packages
  url: packages/exponential-packages.yml
- type: SDKs
  url: packages/exponential-packages.yml
- type: CLI
  url: cli/exponential-cli.yml
- type: Components
  url: components/exponential-components.yml
- type: MCPServer
  url: mcp/exponential-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/exponential-llms.txt
- type: WellKnown
  url: well-known/exponential-well-known.yml
- type: Authentication
  url: authentication/exponential-authentication.yml
- type: Conventions
  url: conventions/exponential-conventions.yml
- type: ErrorCatalog
  url: errors/exponential-problem-types.yml
- type: Lifecycle
  url: lifecycle/exponential-lifecycle.yml
- type: Conformance
  url: conformance/exponential-conformance.yml
- type: DataModel
  url: data-model/exponential-data-model.yml
- type: FinOps
  url: finops/exponential-finops.yml
- type: Arazzo
  name: YO vault snapshot and user position
  url: arazzo/exponential-vault-snapshot.yml
- type: Arazzo
  name: YO Risk Graph triage
  url: arazzo/exponential-risk-graph-triage.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence