> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sumvin.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sumvin Platform API

> What Sumvin is and what you can build with it

Sumvin is the orchestration layer for identity-anchored money. The Platform API gives you four products — <Tooltip headline="Sigil" tip="Sumvin's portable, KYC-verified identity — Proof of Personhood." cta="Glossary →" href="/glossary">Sigil</Tooltip> for verified identity, <Tooltip headline="Errand" tip="An agent's scope-bound tasking run: Intent → Authorization → Vigilance." cta="Glossary →" href="/glossary">Errand</Tooltip> for agent tasking, <Tooltip headline="Envoy" tip="The money agent that acts on a user's behalf." cta="Glossary →" href="/glossary">Envoy</Tooltip> the money agent, and <Tooltip headline="Atomic Money" tip="Sumvin's payments umbrella: ramps, card issuing, x402, and payment links." cta="Glossary →" href="/glossary">Atomic Money</Tooltip> for payments — on top of user accounts, multi-chain wallets, <Tooltip headline="KYC" tip="Know Your Customer — identity verification that feeds attestation claims onto credentials." cta="Glossary →" href="/glossary">KYC</Tooltip> verification, and configurable onboarding, so you build without owning the infrastructure.

## What You Can Build

| Domain                  | Capabilities                                                                                                                                                                              |
| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Accounts & Identity** | User registration, multi-provider auth, phone verification, KYC                                                                                                                           |
| **Wallets**             | <Tooltip headline="EOA" tip="Externally Owned Account — a single-keypair Ethereum address." cta="Glossary →" href="/glossary">EOA</Tooltip> and Safe (multisig) wallets across EVM chains |
| **Assets**              | Multi-chain asset balances and portfolio tracking                                                                                                                                         |
| **Onboarding**          | Step-based flows with per-platform configuration                                                                                                                                          |

## How It Fits Together

Users sign up through your app. The Platform API creates their account, runs them through a configurable onboarding flow (phone verification, KYC, wallet setup), and provisions a Safe smart account wallet as their on-chain identity anchor. From there, your app can manage wallets, query balances, and use the Sumvin Identity Service to issue verifiable credentials to third parties.

<Info>
  Looking to verify Sumvin identity credentials (<Tooltip headline="PINT" tip="Purchase Intent — an EIP-712 signed message authorising specific scopes and actions." cta="Glossary →" href="/glossary">PINT</Tooltip>s, <Tooltip headline="JWT" tip="JSON Web Token — the SIS-issued credential a verifier receives." cta="Glossary →" href="/glossary">JWT</Tooltip>s) as a merchant or service provider? See the [Verifier Guide](/merchant/overview).
</Info>

## Who This Is For

| You are...                                               | Start here                                                                                                                    |
| -------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------- |
| An **app developer** integrating Sumvin                  | [Quickstart](/quickstart) to make your first API call, then the [Guides](/guides/onboarding) for onboarding, KYC, and wallets |
| Building **Sigil identity flows** (Stamped Mandates)     | [Identity & PINTs](/identity/overview) for creating and managing reusable credentials                                         |
| A **merchant or service provider** verifying credentials | [Verifier Guide](/merchant/overview) for JWT and PINT signature validation                                                    |

## Next Steps

**The Platform API is not a wrapper. It's the substrate — and once a user exists inside it, every downstream primitive becomes addressable.**

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Make your first API call in under 5 minutes
  </Card>

  <Card title="Authentication" icon="key" href="/authentication">
    Set up API authentication
  </Card>

  <Card title="Identity & PINTs" icon="fingerprint" href="/identity/overview">
    Understand Sumvin ID and reusable identity
  </Card>

  <Card title="Verifier Guide" icon="shield-check" href="/merchant/overview">
    Verify Sumvin credentials as a merchant
  </Card>
</CardGroup>