# Parity

> Parity is an application platform for teams whose code is written by agents. Every agent gets its own sandbox running the whole stack; staging and production run the same manifest. Every page is also available as Markdown at its URL plus .md.

- [Overview](https://docs.parity.ninja): An application platform for teams whose code is written by agents. Every agent gets its own sandbox running your whole stack; staging and production run the same manifest.
- [Install](https://docs.parity.ninja/install): Install the parity CLI on Linux, macOS or Windows, and verify the download.
- [Quickstart](https://docs.parity.ninja/quickstart): From a repository to a running sandbox of your app in five commands.
- [Agents](https://docs.parity.ninja/guides/agents): Give each coding agent its own sandbox, a token scoped to it, and a signed record of what it did.
- [Migrate from Compose](https://docs.parity.ninja/guides/migrate-from-compose): Turn a docker-compose.yml into a parity.yaml, key by key.
- [Sandboxes](https://docs.parity.ninja/concepts/sandboxes): A short-lived copy of the whole application, with its own built-ins, credentials, network and lifetime.
- [Builds](https://docs.parity.ninja/concepts/builds): One build per commit. Its release rolls the same images out to each environment, through fixed stages in each.
- [Steps and approvals](https://docs.parity.ninja/concepts/steps): Jobs form a graph of steps inside each rollout phase, ordered by depends_on, with block steps that wait for a person in your environments.
- [Releases and promote](https://docs.parity.ninja/concepts/promote): Each build moves across your environments through the release steps in parity.yaml: promote, block, wait, run and group.
- [Manifest](https://docs.parity.ninja/manifest): parity.yaml: one file that describes the application for every sandbox, staging and production.
- [Built-ins](https://docs.parity.ninja/manifest/builtins): Postgres, Redis, S3 storage, email, ClickHouse, OIDC sign-in and certificates, provisioned per sandbox and per environment.
- [Services](https://docs.parity.ninja/manifest/services): Long-running processes: image or build, command, ports, health, public hosts, resources and the develop loop.
- [Environment variables](https://docs.parity.ninja/manifest/env): Literals, references, generated values, secrets and shared groups.
- [Jobs](https://docs.parity.ninja/manifest/jobs): Your own commands, run on rollout steps, on a schedule or on demand.
- [Externals](https://docs.parity.ninja/manifest/externals): The egress allowlist: the third-party hosts each service and build may reach.
- [Environments](https://docs.parity.ninja/manifest/environments): The environments you declare, the labels release steps pick them by, and how they differ from the base file that sandboxes run.
- [Advanced](https://docs.parity.ninja/manifest/advanced): Sandbox limits, splitting the manifest across files, the Kubernetes escape hatch and importing from Score.
- [CLI](https://docs.parity.ninja/reference/cli): Every parity command and flag.
- [MCP](https://docs.parity.ninja/reference/mcp): The Parity MCP server: one tool per API call, for coding agents.
- [API](https://docs.parity.ninja/reference/api): Every endpoint of the Parity API, with the permission each one needs.
- [Errors](https://docs.parity.ninja/reference/errors): Every API error is an RFC 9457 problem with a stable code to branch on.
- [Permissions](https://docs.parity.ninja/security/permissions): Three roles, named permissions, and agents that never have more access than the person they act for.
- [Organizations and members](https://docs.parity.ninja/security/organizations): Create an organization, invite people with a role, and control who keeps access.
- [SSO and SCIM](https://docs.parity.ninja/security/sso): Sign people in through your organization's identity provider, provision them with SCIM, and map IdP groups to roles.
- [Security model](https://docs.parity.ninja/security/model): How Parity isolates tenants and sandboxes, controls egress, handles secrets and records what people and agents did.