Factories > Factory configuration

Factory definition syntax

Look up every file and key in a factory definition: factory.yaml, agents, automations, runners, and skills.

Every factory is defined by files: a factory.yaml plus directories of agents, automations, and runners, versioned in a Git repository. The files are the source of truth — when they change, Warp updates the factory to match. This page describes every file and key in a definition.

Definition files are YAML and Markdown. Keys are case-sensitive.

Where the definition lives

You choose who hosts the definition repository when you create a factory:

Warp-managed (default) - Warp hosts the repository for you. You edit the factory in the Warp Factories web app, and every change is validated, committed to the files, and applied in one step. You never interact with the repository directly, and the definition can’t end up in an invalid state.
GitHub - The definition lives in a repository you own. The repository is the only way to change the factory: the web app shows the configuration read-only and links back to the files. Open a pull request, and any change merged to the production branch (main by default) updates the factory. See Pull request checks.

Both modes use the same files, so everything on this page applies to either. You can also link a GitHub repository to a Warp-managed factory later.

Definition files describe how the factory is configured, not what it is doing: work items, runs, and metrics live in the web app and are never written to the files.

Directory structure

Each resource takes its name from its path: agents/reviewer/agent.md defines an agent named reviewer.

factory.yaml
agents/
  foreman/
    agent.md
    skills/
      incident-triage/
        SKILL.md
  reviewer/
    agent.md
automations/
  labeled-issue/
    automation.md
runners/
  linux-build.yaml
skills/
  repository-conventions/
    SKILL.md

Only factory.yaml and at least one agent are required. For a complete working definition, see the example below.

`factory.yaml`

The factory’s root document. It names the factory, scopes it to repositories, and sets the execution defaults every agent inherits.

schemaVersion: v1alpha1
name: payments-factory
repositories:
  - owner: acme
    name: payments-service
agentDefaults:
  model: auto

`schemaVersion`

Required. The definition schema version. The only supported value is v1alpha1.

`name`

Required. The factory’s name.

`description`

Optional. What the factory is for.

`alias`

Optional. The handle used to @-mention the factory on connected platforms like Slack and Linear. Up to 60 characters: letters, numbers, spaces, ., _, and -. Must be unique across your workspace (compared case-insensitively).

`credentialStrategy`

Optional. Whose credentials the factory’s runs execute with: EXECUTOR (the principal executing the run, the default) or CREATOR (the user who created the run). Agents can override it per role.

`repositories`

Required. The GitHub repositories the factory works in, as owner and name pairs.

repositories:
  - owner: acme
    name: payments-service
  - owner: acme
    name: payments-docs

`secrets`

Optional. Names of managed secrets granted to every agent in the factory, in addition to anything individual agents declare.

`mcpServers`

Optional. MCP servers granted to every agent, keyed by the name the agent sees. Each entry references a Warp-managed MCP server by warpId.

mcpServers:
  sentry:
    warpId: SENTRY_MCP_SERVER_ID

`cloudProviders`

Optional. Cloud-provider identity federation for agent runs. gcp accepts projectNumber (quote it so YAML keeps it a string), workloadIdentityFederationPoolId, workloadIdentityFederationProviderId, and an optional serviceAccountEmail. aws accepts roleArn.

cloudProviders:
  aws:
    roleArn: arn:aws:iam::123456789012:role/warp-factory

`integrations`

Optional. The integration providers attached to the factory. type accepts slack, linear, or jira. Declare at most one issue tracker: linear and jira are mutually exclusive, and omitting a tracker is also valid. GitHub is not declared here; repository access comes from repositories and the connected GitHub App.

integrations:
  - type: slack
  - type: linear

`agentDefaults`

Required. The execution defaults every agent inherits. Declare exactly one of model or harness; the other keys are optional. An agent that sets one of these keys for itself overrides the default.

agentDefaults:
  model: auto
  runner: linux-build
  environmentId: PAYMENTS_ENVIRONMENT_ID

`agentDefaults.model`

The model runs execute with, as a model_id from model choice for agents. model is shorthand for running on the Warp Agent harness:

model: auto

is equivalent to:

harness:
  type: oz
  model: auto

model and harness are mutually exclusive everywhere they appear.

`agentDefaults.harness`

The harness and model runs execute with. Use the harness form to run a third-party harness or to set advanced options. type accepts oz, claude (alias claude-code), codex, or gemini; see supported harnesses.

harness:
  type: codex
  model: gpt-5.3-codex
  reasoningLevel: high
  auth:
    source: managedSecret
    secretName: CODEX_API_KEY

For a third-party harness, auth sets where credentials come from: source: managedSecret reads the managed secret named by secretName, and source: workerEnvironment reads them from your self-hosted worker’s environment (and requires a self-hosted workerHost). The oz harness supplies its own credentials and takes no auth or reasoningLevel.

`agentDefaults.runner`

The name of a runner defined under runners/ that provides the compute for runs.

`agentDefaults.environmentId`

The ID of an existing environment runs execute in.

`agentDefaults.secrets`

Managed secrets for agents that don’t declare their own. An agent that declares secrets replaces this list rather than adding to it; factory-wide secrets always apply.

`agentDefaults.mcpServers`

MCP servers for agents that don’t declare their own, in the same form as mcpServers. Like secrets, an agent that declares its own map replaces this one, and factory-wide servers always apply.

`agentDefaults.workerHost`

Where runs execute: warp for Warp-hosted compute, or the ID of a connected self-hosted worker.

`agents/<name>/agent.md`

One file per agent. The YAML frontmatter configures how the agent runs, and the Markdown body is the agent’s prompt: the durable instructions for its role. The agent’s name comes from its directory.

---
description: Reviews factory-produced pull requests
agentType: REVIEW
---

Review each pull request against the repository's standards. Request
changes when tests are missing; never approve your own edits.

The frontmatter accepts:

description - Optional. What the agent does.
agentType - Optional. The agent’s role.
credentialStrategy - Optional. Overrides the factory-level credentialStrategy for this agent’s runs.
model or harness, runner, environmentId, secrets, mcpServers, workerHost - Optional. The same keys as agentDefaults; a key declared here overrides the default for this agent.

`agentType`

The agent’s role: CUSTOM (the default), FOREMAN (alias MAIN), TRIAGE, SPEC, IMPLEMENT, REVIEW, or VERIFY. Every definition declares exactly one foreman — the factory’s entry point and the default target for automations. See Factory agents for what each role does.

`automations/<name>/automation.md`

One file per automation. The frontmatter declares when runs start and how they execute, and the Markdown body is the prompt each run starts with. The automation’s name comes from its directory.

---
agent: foreman
triggers:
  - provider: github
    event: issue_labeled
    filter:
      repos: [acme/payments-service]
      labels: [factory-ready]
---

Review the labeled issue and decide the next required stage. Return
unresolved product questions to a human.

`enabled`

Optional. Turns the automation on or off. Defaults to true.

`agent`

Optional. The name of the agent that handles this automation’s runs. Defaults to the foreman.

`triggers`

Required. One or more events that start runs. Each trigger declares a provider and an event, an optional filter, and, for schedules, a schedule.

The providers and their events:

github - issue_created, issue_labeled, issue_assigned, issue_mentioned, pull_request_opened, pull_request_closed, pull_request_merged, pull_request_labeled, pull_request_assigned, pull_request_mentioned, pull_request_ready, pull_request_reopened, pull_request_synchronized, pull_request_review_requested, pull_request_review_submitted, push, check_suite_completed, check_run_rerequested, check_suite_rerequested, workflow_run_completed
linear - issue_created, issue_labeled, issue_assigned, issue_state_changed, comment_created, agent_session_created
jira - issue_created, issue_labeled, status_changed, agent_session_created
slack - app_mention, message_posted, message_dm, message_im, message_mpim, member_joined_channel, reaction_added
schedule - cron_fired
factory - work_item_stage_changed

Slack, Linear, and Jira triggers require the matching integration to be connected. GitHub triggers work through the factory’s repositories.

`triggers[].filter`

Optional. Narrows which events start runs. The keys a filter accepts depend on the provider and event: for example repos, labels, and authors for GitHub events, or channels, users, and keywords for Slack messages. Filter keys combine with AND, an omitted key matches everything, and each key takes a list that matches any of its values (or an in/not_in object to include or exclude). Slack and Linear filters take names (channels, users, teams, projects, states), and Warp resolves them to IDs when it applies the change.

`triggers[].schedule`

Declares a cron schedule inline on a schedule / cron_fired trigger: a five-field cron expression or a descriptor like @daily or @every 1h, always interpreted in UTC. An optional name distinguishes multiple schedules on one automation.

triggers:
  - provider: schedule
    event: cron_fired
    schedule:
      name: weekday-mornings
      cron: "0 9 * * 1-5"

Execution overrides

An automation may also declare model or harness, runner, environmentId, secrets, mcpServers, and workerHost (the same keys as agentDefaults) to override the target agent’s settings for the runs it starts.

`runners/<name>.yaml`

Optional. Each file defines a runner: the compute a run executes on. The runner’s name comes from the file name, and agents and automations select it by that name. See cloud agent runners for how runners behave.

description: Linux runner for payments builds and tests
setupCommands:
  - corepack enable
instanceShape:
  vcpus: 4
  memoryGb: 8
platform:
  os: linux
  arch: x86_64
  linux:
    dockerImage: ubuntu:22.04

`setupCommands`

Optional. Shell commands run in order while the sandbox is prepared.

`instanceShape`

Optional. The compute size, as vcpus and memoryGb. Omit it to take the workspace default.

`platform`

The operating system and architecture. os is linux (the default) or macos, and arch is x86_64 (the default on Linux) or aarch64 (the only option on macOS). Linux runners require linux.dockerImage, the container image the sandbox boots, so every Linux runner declares a platform section. macOS runners accept an optional mac.version ("14", "15", "26", or "27"; quote it, and it defaults to "26").

Skills

A skill is a directory containing a SKILL.md, not a YAML key. Skills under skills/ are available to every agent in the factory; skills under agents/<name>/skills/ are available only to that agent. See Skills for agents.

Example factory definition

A complete, working definition: one repository, a foreman, an automation triggered by a GitHub label, and a Linux runner. PAYMENTS_ENVIRONMENT_ID and SENTRY_MCP_SERVER_ID stand in for the IDs of an existing environment and MCP server.

schemaVersion: v1alpha1
name: payments-factory
description: Processes approved work for the payments service
alias: payments
repositories:
  - owner: acme
    name: payments-service
agentDefaults:
  model: auto
  runner: linux-build
  environmentId: PAYMENTS_ENVIRONMENT_ID

---
description: Routes approved payments work through the factory
agentType: FOREMAN
secrets:
  - SENTRY_AUTH_TOKEN
mcpServers:
  sentry:
    warpId: SENTRY_MCP_SERVER_ID
---

Own each work item from intake through human handoff.

Confirm the request is ready before dispatching implementation. Require
repository validation and independent review before marking work complete.

---
enabled: true
agent: foreman
triggers:
  - provider: github
    event: issue_labeled
    filter:
      repos: [acme/payments-service]
      labels: [factory-ready]
---

Review the labeled issue and decide the next required stage. Preserve the
issue's acceptance criteria and return unresolved product questions to a human.

description: Linux runner for payments builds and tests
setupCommands:
  - corepack enable
instanceShape:
  vcpus: 4
  memoryGb: 8
platform:
  os: linux
  arch: x86_64
  linux:
    dockerImage: ubuntu:22.04

Pull request checks for GitHub-backed factories

When your definition lives in GitHub, Warp validates every change before it takes effect:

Every pull request that targets the production branch gets a warp/factory-config check. The check annotates invalid fields and unresolvable references with the file and line that caused them, and summarizes what the change would apply.
When a change lands on the production branch, Warp applies it as a whole. A definition that fails validation never partially applies: the factory keeps running on its last valid definition until the branch is fixed.

Warp-managed factories skip all of this. Every edit in the web app is validated when you save it, so the definition can’t become invalid.

Machine-readable schema

Warp publishes the definition schema as JSON Schema documents, generated from the same parser that validates your files. Fetch the supported versions from https://app.warp.dev/api/v1/factory-files/schemas and the v1alpha1 documents from https://app.warp.dev/api/v1/factory-files/schemas/v1alpha1. Both endpoints are unauthenticated, so editors and agents can validate a definition without a Warp login.