Developer Tools · Review
ActiveVaults.fyi Review 2026: A Unified DeFi Yield API
Vaults.fyi is an API and SDK for finding DeFi yield strategies, preparing transactions, and tracking portfolios across protocols. It can simplify integrations, but fees and independent security assessments are not published here.
By the DappsAtlas editorial team · Updated
DappsAtlas score
7.2/10
Good
Our verdict on Vaults Protocol
7.2/10Vaults.fyi is best suited to wallet teams, analytics developers, and AI-agent builders that want a single integration for yield data, transactions, and portfolio tracking. Its main strength is the breadth of functions and protocol coverage offered through one API, with SDKs for TypeScript and Python. The key caveats are that fees and plan limits are not specified here, Solana/SVM support is in beta, and no independent security assessment is published. The service can simplify integration, but it does not remove risks in the underlying DeFi protocols.
Score breakdown
How Vaults Protocol scores
- Security
- n/a
- Ease of use
- 7.0/10
- Fees
- n/a
- Features
- 8.0/10
Scores run from 0 to 10 and are based only on facts we could verify. Where information was missing we mark the score n/a rather than guess.
What is Vaults Protocol?
Vaults.fyi is a developer API and SDK for accessing DeFi yield strategies across protocols. It combines vault discovery, market data, transaction preparation, and portfolio tracking for teams building wallets, analytics tools, and AI agents. Its documentation describes coverage of more than 1,000 strategies across 80+ protocols and 20+ EVM networks, with Solana/SVM coverage in beta.
The service can reduce the need to build and maintain a separate integration for each supported protocol. It provides ready-to-sign transaction payloads and says these are non-custodial, but users still interact with the underlying vaults and bear their associated risks. API prices, plan limits, and an independent security assessment are not published here.
How Vaults Protocol works
Vaults.fyi aggregates yield-strategy data from supported protocols into a common API. Developers can browse vaults and compare information such as APY, TVL, and fees, rather than building a separate integration for each protocol. The service says this data is sourced hourly from onchain contracts, and it also provides a Reputation Score for additional context.
For transactions, the API prepares payloads for actions such as depositing, redeeming, and claiming. The payloads are ready for a wallet or app to sign and submit; Vaults.fyi says the flow is non-custodial and does not use intermediary contracts. Portfolio endpoints help an integrating app track positions and PnL. The underlying vault and protocol still determine the user's financial and smart-contract risks.
6 features
Key features
01
Vault discovery
Browse yield opportunities across more than 1,000 strategies, with filters for network, protocol, asset, and APY.
02
Yield and market data
Access standardized APY, TVL, and fee data, plus a Reputation Score. The service says it sources this data hourly from onchain contracts.
03
Transaction preparation
Prepare ready-to-sign deposit, redeem, and claim payloads for hundreds of vaults without an intermediary contract.
04
Portfolio tracking
Follow wallet positions, PnL, and idle assets, and identify yield options that match wallet holdings.
05
Developer SDKs
Use TypeScript or Python SDKs to connect an app to Vaults.fyi's API.
06
Agent integrations
Build autonomous workflows using the MCP server or x402 pay-per-request option.
Pros and cons
What we like
- One integration provides access to yield data across many protocols and strategies.
- Supports discovery, transaction preparation, and portfolio tracking in the same API.
- Offers TypeScript and Python SDKs.
- Transaction payloads are described as non-custodial and do not use intermediary contracts.
- Includes tools for AI and agent workflows, including MCP and x402 options.
Watch out for
- Fees and API plan limits are not specified here; users need to check the Plans & Billing area before integrating.
- The API adds a dependency on Vaults.fyi for yield data and transaction preparation.
- Vaults.fyi does not publish an audit or detailed security assessment in its documentation.
- Yield strategies carry the risks of their underlying protocols, including smart-contract and asset risks.
- Solana/SVM coverage is still in beta.
Vaults Protocol fees
Vaults.fyi does not specify API prices or plan limits here. It offers API access and has a Plans & Billing area; check those details before integrating, since costs and access limits can affect a product's operating budget.
Is Vaults Protocol safe?
Vaults.fyi describes its transaction flows as non-custodial: it prepares payloads for signing and says it does not route transactions through intermediary contracts. That does not eliminate the risks of the underlying vaults, protocols, tokens, or any application that integrates the API.
Vaults.fyi does not publish an audit or detailed security assessment in its documentation. Teams should review the payloads and permissions in their own integration and assess the security of each underlying protocol. API availability and data quality are also operational dependencies. Regulatory status is not stated.
5 steps
How to get started with Vaults Protocol
- 1
Create an account and obtain an API key.
- 2
Install the TypeScript or Python SDK and initialize its client with the key.
- 3
Use the API or SDK to browse vault data, filtering by network, protocol, asset, or APY.
- 4
Prepare deposit, redeem, or claim payloads through the transaction endpoints, then have the user or app handle signing.
- 5
Use portfolio endpoints to track positions and PnL in your product.
Who Vaults Protocol is for
Vaults.fyi is for developers building wallets, dashboards, portfolio tools, or AI agents that need standardized access to DeFi yield opportunities. It is less suited to individuals seeking a standalone investment product: the service is an integration layer, and users still need to assess each underlying vault and protocol.
Vaults Protocol FAQs
What is Vaults.fyi?
Vaults.fyi provides a unified API for DeFi yield data, transaction preparation, and portfolio tracking. It is aimed at teams building wallets, analytics products, and AI agents rather than at end users looking for a standalone vault.
Which networks and protocols does Vaults.fyi support?
The service says it covers more than 1,000 yield strategies across 80+ protocols and 20+ EVM networks. Solana/SVM vault coverage is listed as beta.
Does Vaults.fyi custody crypto or execute transactions?
Vaults.fyi provides ready-to-sign deposit, redeem, and claim payloads. Its documentation says these flows are non-custodial and use no intermediary contracts, so the user or integrating app handles signing and execution.
How much does Vaults.fyi cost?
The documentation describes API access and a Plans & Billing section, but does not specify prices or plan limits here. Check the current billing details before building around the service.
Is Vaults.fyi audited and safe to use?
Vaults.fyi does not publish an audit or detailed security assessment in its documentation. Using its tools also does not remove the smart-contract, market, or operational risks of the underlying DeFi protocols.
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How we checked
Sources
No public sources were recorded for this review.
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