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

# Decisions

> The load-bearing choices, why they were made, and what they cost.

Each record is one decision that the rest of the code leans on. They are
written once and not edited after: a decision that changes gets a new record
that says which one it replaces.

| #                                                 | Decision                                                        |
| ------------------------------------------------- | --------------------------------------------------------------- |
| [0001](/decisions/0001-ui-is-an-api-client)       | The web app is a client of the public API                       |
| [0002](/decisions/0002-renditions-are-urls)       | Content-addressed storage; renditions are a function of the URL |
| [0003](/decisions/0003-one-core-two-doors)        | One core, with REST and MCP as adapters                         |
| [0004](/decisions/0004-postgres-and-nothing-else) | Postgres and a bucket, and nothing else                         |
| [0005](/decisions/0005-agents-propose)            | What an agent writes is a proposal                              |
| [0006](/decisions/0006-grants-and-free-sso)       | Grants that add up and reach down; single sign-on is free       |
| [0007](/decisions/0007-lifecycle-at-delivery)     | Expiry is a date, enforced where bytes leave                    |
| [0008](/decisions/0008-migrations-on-start)       | Migrations are only added, and run on start                     |
| [0009](/decisions/0009-agpl-and-ee)               | AGPLv3 core, `ee/` reserved (replaced by 0011)                  |
| [0010](/decisions/0010-frozen-v1)                 | v1 is frozen by a test, not a promise in prose                  |
| [0011](/decisions/0011-elastic-license)           | Elastic License 2.0: free to use, not to resell as a service    |