Exponential website screenshot

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 5 APIs on the APIs.io network, including Agent API, History API, Performance API, and 2 more. 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 22 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.7/100 developing ▬ flat Agent 32/100 agent ready saas Full breakdown ↓
scored 2026-08-30 · rubric v0.17.2
2 APIs 1 MCP Servers
CompanyDeFiDecentralized FinanceYieldYield OptimizerVaultERC-4626Cross-chainBlockchainCryptoRiskRisk RatingsAgentsx402Web3

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-30 · rubric v0.17.2
Composite quality — 40.7/100 · developing
Contract Quality 10.7 / 25
Developer Ergonomics 14.8 / 20
Access Clarity 3.7 / 20
Operational Transparency 1.7 / 13
Contract Governance 2.2 / 12
Discoverability 7.6 / 10
Agent readiness — 32/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 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 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 4 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Surface 0 / 5
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 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Exponential Agent API

The Agent API from Exponential — 4 operation(s) for agent.

Exponential History API

The History API from Exponential — 1 operation(s) for history.

Exponential Performance API

The Performance API from Exponential — 1 operation(s) for performance.

Exponential Public API

The Public API from Exponential — 1 operation(s) for public.

Exponential Vault API

The Vault API from Exponential — 5 operation(s) for vault.

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Yo Protocol Agent API

OPEN COLLECTION

Yo Protocol Agent History API

OPEN COLLECTION

Yo Protocol Agent Performance API

OPEN COLLECTION

Yo Protocol Agent Public API

OPEN COLLECTION

Yo Protocol Agent Vault API

OPEN COLLECTION

Arazzo Workflows 2

Multi-step API workflows described with the Arazzo specification.

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Exponential MCP Server

MCP SERVER

FinOps 1

Cost, billing, and metering signals for API financial operations.

Exponential Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Exponential Authentication

none/payment-gated · 3 schemes

SECURITY

Exponential Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Exponential Agentic Access

12 operations

12 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 MCPServer
MCPServer
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Components
Components
 Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 Arazzo
Arazzo
 Arazzo
Arazzo

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 CLI
CLI

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Security
Security
 Authentication
Authentication

Commercial 2

Pricing, plans, and the legal terms of use

Pricing
Pricing
 FinOps
FinOps

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

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
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- DeFi
- Decentralized Finance
- Yield
- Yield Optimizer
- Vault
- ERC-4626
- Cross-chain
- Blockchain
- Crypto
- Risk
- Risk Ratings
- Agents
- x402
- Web3
tags_raw:
- 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:
- aid: exponential:exponential-agent-api
  name: Exponential Agent API
  description: The Agent API from Exponential — 4 operation(s) for agent.
  humanURL: https://docs.yo.xyz/integrations/api
  baseURL: https://api.yo.xyz
  tags:
  - Agents
  tags_raw:
  - Agent
  properties:
  - type: OpenAPI
    url: openapi/exponential-agent-api-openapi.yml
- aid: exponential:exponential-history-api
  name: Exponential History API
  description: The History API from Exponential — 1 operation(s) for history.
  humanURL: https://docs.yo.xyz/integrations/api
  baseURL: https://api.yo.xyz
  tags:
  - History
  properties:
  - type: OpenAPI
    url: openapi/exponential-history-api-openapi.yml
- aid: exponential:exponential-performance-api
  name: Exponential Performance API
  description: The Performance API from Exponential — 1 operation(s) for performance.
  humanURL: https://docs.yo.xyz/integrations/api
  baseURL: https://api.yo.xyz
  tags:
  - Performance
  properties:
  - type: OpenAPI
    url: openapi/exponential-performance-api-openapi.yml
- aid: exponential:exponential-public-api
  name: Exponential Public API
  description: The Public API from Exponential — 1 operation(s) for public.
  humanURL: https://docs.yo.xyz/integrations/api
  baseURL: https://api.yo.xyz
  tags:
  - Public
  properties:
  - type: OpenAPI
    url: openapi/exponential-public-api-openapi.yml
- aid: exponential:exponential-vault-api
  name: Exponential Vault API
  description: The Vault API from Exponential — 5 operation(s) for vault.
  humanURL: https://docs.yo.xyz/integrations/api
  baseURL: https://api.yo.xyz
  tags:
  - Vault
  properties:
  - type: OpenAPI
    url: openapi/exponential-vault-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/exponential-protocol-overlay.yaml
- 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

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