--- title: "API Documentation" description: "Fystack helps Web3 projects, fintechs & stablecoin issuers automate digital asset workflows across multiple chains at scale: secure, compliant, self-hosted." url: https://docs.fystack.io last_updated: 2026-10-15 --- > ## Documentation index > Fetch the complete documentation index at: https://docs.fystack.io/llms.txt > Use it to discover all available pages before exploring further. # API Documentation Use the Fystack API to create and manage secure MPC wallets, authorize transactions and integrate advanced wallet features like transaction policies and multi-approval flows, all without ever touching a private key. Our API is designed for developers who want enterprise-grade security with plug-and-play simplicity. Get started in minutes using our RESTful endpoints or one of our fully featured SDKs. [Quickstart](https://docs.fystack.io/quickstart.md) [Explore SDKs](https://docs.fystack.io/sdks.md) [Build with AI](https://docs.fystack.io/building-with-ai.md) ## Guides - [Authentication](https://docs.fystack.io/authentication.md): Learn how to authenticate your API requests. - [Pagination](https://docs.fystack.io/pagination.md): Understand how to work with paginated responses. - [Errors](https://docs.fystack.io/errors.md): Read about the different types of errors returned by the API. - [Webhooks](https://docs.fystack.io/webhooks.md): Learn how to programmatically configure webhooks for your app. ## APIs - [Workspace](https://docs.fystack.io/product/workspace.md): Isolated environments for managing wallets, users, transactions, and settings. - [Network Management](https://docs.fystack.io/product/network.md): Configure network settings and monitor network health. - [Asset Management](https://docs.fystack.io/product/asset-management.md): Every asset configured for your workspace, with its contract address and status. - [User Management](https://docs.fystack.io/product/user-management.md): Add members, assign roles, and update permissions. - [Approval Group](https://docs.fystack.io/product/approval-group.md): Choose who signs off on sensitive actions and how many signatures are required. - [Security & 2FA](https://docs.fystack.io/product/security.md): Secure your account with Passkey and TOTP two-factor authentication. - [Withdrawal](https://docs.fystack.io/product/withdrawal.md): Send funds with address risk screening, category tagging, and approval queues. - [Address Book](https://docs.fystack.io/product/address-book.md): Save counterparty addresses across chains for withdrawals, sweeps, and policies. - [Web3 Sign](https://docs.fystack.io/product/web3-sign.md): Review and approve Web3 signing requests in the dashboard. - [Gas Station](https://docs.fystack.io/product/gas-station.md): Keep wallets funded with gas from a shared multi-chain Gas Tank. - [Automation & Sweep](https://docs.fystack.io/product/automation.md): Sweep funds between wallets automatically with sweep tasks. - [Policies](https://docs.fystack.io/product/policies.md): Automatically allow, block, or route sensitive actions through approval. - [Alerts](https://docs.fystack.io/product/alerts.md): Get real-time wallet activity alerts in channels like Telegram. - [API Keys](https://docs.fystack.io/api-keys.md): Get the HMAC secret or generate an Ed25519 key pair to sign API requests. - [Wallets](https://docs.fystack.io/wallets.md): Create and manage secure wallets for digital assets with standard and MPC options. - [Transfers](https://docs.fystack.io/withdrawals.md): Initiate and manage transfers from your wallets. - [Web3 Sign](https://docs.fystack.io/web3-sign.md): Sign messages, typed data, and transactions with Fystack wallets. - [Webhooks](https://docs.fystack.io/webhooks.md): Receive events from Fystack and verify webhook payloads. - [Pay](https://docs.fystack.io/checkout.md): Create checkouts and accept crypto payments from your users. - [Networks](https://docs.fystack.io/networks.md): Retrieve supported blockchain networks and rescan transactions. - [Assets](https://docs.fystack.io/assets.md): Query supported assets and add or remove them from wallets. - [Workspaces](https://docs.fystack.io/workspaces.md): Retrieve workspace statistics, balances, and analytics. - [Policies](https://docs.fystack.io/policies.md): Create, validate, and manage programmable policy rules. ## APIs - [Workspace](https://docs.fystack.io/product/workspace.md): Isolated environments for managing wallets, users, transactions, and settings. - [Network Management](https://docs.fystack.io/product/network.md): Configure network settings and monitor network health. - [Asset Management](https://docs.fystack.io/product/asset-management.md): Every asset configured for your workspace, with its contract address and status. - [User Management](https://docs.fystack.io/product/user-management.md): Add members, assign roles, and update permissions. - [Approval Group](https://docs.fystack.io/product/approval-group.md): Choose who signs off on sensitive actions and how many signatures are required. - [Security & 2FA](https://docs.fystack.io/product/security.md): Secure your account with Passkey and TOTP two-factor authentication. - [Withdrawal](https://docs.fystack.io/product/withdrawal.md): Send funds with address risk screening, category tagging, and approval queues. - [Address Book](https://docs.fystack.io/product/address-book.md): Save counterparty addresses across chains for withdrawals, sweeps, and policies. - [Web3 Sign](https://docs.fystack.io/product/web3-sign.md): Review and approve Web3 signing requests in the dashboard. - [Gas Station](https://docs.fystack.io/product/gas-station.md): Keep wallets funded with gas from a shared multi-chain Gas Tank. - [Automation & Sweep](https://docs.fystack.io/product/automation.md): Sweep funds between wallets automatically with sweep tasks. - [Policies](https://docs.fystack.io/product/policies.md): Automatically allow, block, or route sensitive actions through approval. - [Alerts](https://docs.fystack.io/product/alerts.md): Get real-time wallet activity alerts in channels like Telegram. - [API Keys](https://docs.fystack.io/api-keys.md): Get the HMAC secret or generate an Ed25519 key pair to sign API requests. - [Wallets](https://docs.fystack.io/wallets.md): Create and manage secure wallets for digital assets with standard and MPC options. - [Transfers](https://docs.fystack.io/withdrawals.md): Initiate and manage transfers from your wallets. - [Web3 Sign](https://docs.fystack.io/web3-sign.md): Sign messages, typed data, and transactions with Fystack wallets. - [Webhooks](https://docs.fystack.io/webhooks.md): Receive events from Fystack and verify webhook payloads. - [Pay](https://docs.fystack.io/checkout.md): Create checkouts and accept crypto payments from your users. - [Networks](https://docs.fystack.io/networks.md): Retrieve supported blockchain networks and rescan transactions. - [Assets](https://docs.fystack.io/assets.md): Query supported assets and add or remove them from wallets. - [Workspaces](https://docs.fystack.io/workspaces.md): Retrieve workspace statistics, balances, and analytics. - [Policies](https://docs.fystack.io/policies.md): Create, validate, and manage programmable policy rules.