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

# Bijection

> One governed model over the systems your business already runs on.

Bijection is a governed operational workspace. It captures the systems you already run
on at an immutable published basis, expresses that world as one model declared in
code, and makes every change to it a planned, reviewable, recorded action.

The platform is domain-neutral. A **model directory** — objects, links,
functions, actions, connectors, dashboards, automations, and Workshops — is the
complete production composition input. Swapping that directory yields a different
operational product with no change to the platform itself.

## Three product interfaces

<CardGroup cols={3}>
  <Card title="eclipse" icon="orbit" href="/cli/eclipse">
    Requests Eclipse deployment lifecycle and authors signed product changes.
    No live-world or infrastructure credentials.
  </Card>

  <Card title="atelier" icon="boxes" href="/cli/atelier">
    Governed human and agent operations over the same public HTTP API the web
    app uses. No direct database, storage, or connector authority.
  </Card>

  <Card title="axiom" icon="sparkles" href="/cli/axiom">
    Chat, Agent Runs, evaluation, and AI evidence. No Action execution or
    direct world authority.
  </Card>
</CardGroup>

The platform map is: **Eclipse delivers. Atelier represents and governs the
world. Axiom reasons over it. Only Atelier Actions change it.** `eclipse`,
`atelier`, and `axiom` are separate public CLI/SDK products. Mothership is
deployment-internal and Panopticon is local-development-only.

## The two contracts everything else follows from

<AccordionGroup>
  <Accordion title="Every read resolves at a published basis">
    Declared source datasets are captured and read only at an immutable
    published basis. There is no live, federated, or query-time source read.
    Freshness comes from capturing more often — never from reading around the
    basis. See [Capture](/concepts/capture).
  </Accordion>

  <Accordion title="Actions are the only governed mutation">
    A plan is stateless and shows exactly what will change. Execution is the only
    thing that mutates, and it writes an append-only fact carrying the bounded
    decision evidence the action declared. See [Actions](/concepts/actions).
  </Accordion>
</AccordionGroup>

## Where to go next

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Six steps from signing in to your first governed decision.
  </Card>

  <Card title="Architecture" icon="network" href="/concepts/architecture">
    What runs, what owns what, and where the boundaries are drawn.
  </Card>
</CardGroup>