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

# Developer Overview

> Build AI-operable workflows on IXO: SDKs, APIs, and paths from shared state to Qi cooperation and agents.

<Tip>
  **Build lens:** you are wiring **real-world workflows** where agents and services act on **verifiable** entities, claims, and evidence—not only on generic LLM context. This hub lists SDKs, APIs, and guides for that stack.
</Tip>

**IXO** anchors what is true on-chain and in linked services (domains, claims, credentials). **Qi** (the **Qi Intelligent Cooperating System**) is where people and agents **cooperate** on that truth—via Matrix, oracle and agent services, and automation. Most projects still implement **state first** (protocol, claims, indexing), then add **cooperation** (Matrix, Agentic Oracles, SDKs). Read [Introduction](/introduction), [What you can build](/guides/what-you-can-build), [Core concepts](/core-concepts), and [Qi: cooperation on verified workflows](/articles/qi-intelligent-cooperating-system) for the full model.

## Choose your starting point

<CardGroup>
  <Card title="SDKs and tools" icon="toolbox" href="/sdk-reference/index">
    Browse TypeScript SDKs and deployable gateway tools, including the IXO MultiClient SDK, IXO Matrix Client SDK, and IXO USSD gateway
  </Card>

  <Card title="API reference" icon="server" href="/api-reference/index">
    REST, RPC, GraphQL, and service API interfaces for IXO Protocol and application services
  </Card>

  <Card title="Authentication" icon="key" href="/guides/dev/authentication">
    Set up credentials, session keys, and authorization to connect to IXO services
  </Card>

  <Card title="Networks and endpoints" icon="network-wired" href="/reference/networks-and-endpoints">
    Mainnet and testnet connection details, chain IDs, and base URLs
  </Card>

  <Card title="Authentication matrix" icon="table" href="/reference/authentication-matrix">
    Which headers and credentials apply to each API surface
  </Card>

  <Card title="Glossary" icon="book" href="/reference/glossary">
    IXO vocabulary with links to detailed guides and articles
  </Card>

  <Card title="Qi and Agentic Oracles" icon="sparkles" href="/articles/qi-intelligent-cooperating-system">
    Human–agent cooperation, oracles, and agent tooling over verified workflows
  </Card>
</CardGroup>

## Build specific capabilities

<CardGroup>
  <Card title="Digital twins" icon="cube" href="/guides/digital-twins">
    Create and manage entity domains for real-world systems, assets, and organisations
  </Card>

  <Card title="Claims and verification" icon="file-check" href="/guides/dev/ixo-claims">
    Submit and verify impact claims with evidence using IXO Protocol claims modules
  </Card>

  <Card title="Digital MRV" icon="chart-line" href="/guides/digital-mrv">
    Set up digital measurement, reporting, and verification workflows
  </Card>

  <Card title="Agentic Oracles" icon="brain" href="/guides/ixo-oracles-architecture">
    Build AI-powered oracle services for verification, evaluation, and automation
  </Card>

  <Card title="Domain settings" icon="sliders" href="/guides/dev/domain-settings">
    Configure entity domain permissions, services, and linked resources
  </Card>

  <Card title="Model Context Protocol (MCP)" icon="plug" href="/mcp/model-context-protocol">
    Connect AI tools to IXO services through MCP servers
  </Card>
</CardGroup>

## Core concepts

<AccordionGroup>
  <Accordion title="IXO Protocol" icon="cube">
    The IXO Protocol is a Cosmos SDK blockchain for coordinating, financing, and verifying real-world impacts. Core modules cover entity management, claims, tokens, bonds, and smart accounts. [Read the protocol overview](/protocols/ixo-protocol).
  </Accordion>

  <Accordion title="Domains and digital twins" icon="diagram-project">
    Domains are on-chain representations of real-world entities — organisations, projects, assets, and devices. Each domain has a Decentralized Identifier (DID), controllers, services, and a linked IXO Matrix data room. [Learn about digital twins](/guides/digital-twins).
  </Accordion>

  <Accordion title="IXO Matrix" icon="database">
    IXO Matrix is the encrypted data and communication layer. Applications use it for secure data rooms, evidence storage, and messaging linked to on-chain state. [Read the Matrix overview](/articles/ixo-matrix).
  </Accordion>

  <Accordion title="Agentic Oracles" icon="brain">
    Agentic Oracles are AI-powered services that process impact claims, validate evidence, and write verifiable attestations to the IXO Protocol. [Learn about Agentic Oracles](/articles/agentic-oracles).
  </Accordion>
</AccordionGroup>

## Developer resources

* [IXO open-source repositories](https://github.com/ixofoundation) — source code for SDKs, gateway tools, and reference implementations
* [Developer community](https://ixofoundation.slack.com/archives/C04UERAUHQT) — questions, discussions, and support
* [Product and SDK map](/reference/product-and-sdk-map) — canonical list of products, SDKs, and their package identifiers