# Vesper Finance

**Canonical:** https://apis.io/providers/vesper/  
**Website:** https://vesper.finance/  
**APIs profiled:** 6

Vesper Finance is a DeFi yield aggregator that enables users to deposit assets into managed pools where yield strategies automatically optimize returns across decentralized finance protocols. The platform provides REST APIs for querying pool performance metrics, APY data, strategy information, VSP token statistics, and historical value-locked data across Ethereum, Polygon, Avalanche, and Optimism.

## Kin Score — 32.9 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 32.9).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 59.3 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

## Agent readiness — 24.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Free · Open access — onboarding: open, pricing: free, trial: no (confidence: medium).

## APIs (6)

- **Vesper Contracts API Reference** — Smart contract interface reference for Vesper pools, strategies, PoolAccountant, PoolRewards, and related on-chain components enabling direct DeFi integration via Web3.
- **Vesper Subgraph API** — GraphQL subgraph for querying Vesper Finance on-chain events, pool history, strategy performance, and token metrics via The Graph protocol.
- **Vesper Finance Pools API** — Vesper Grow Pool data and metadata
- **Vesper Finance Rates API** — APY, APR, and lending rate data
- **Vesper Finance TVL API** — Total value locked metrics
- **Vesper Finance VSP API** — VSP token statistics and staking data

## Agentic access (1)

- **Vesper Agentic Access** — 6 operations

## Security (1)

- **Vesper Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Plans**

## Tags

DeFi, Yield Aggregator, Liquidity Pools, APY, Staking, VSP Token, Ethereum, Polygon, Avalanche, Optimism

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/vesper/). Scores are computed from the provider's own public artifacts under a published rubric.