paseo/public-docs/hub/configuration/hub-yml.md

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Hub configuration reference	Canonical Hub resource, workflow, agent, expression, and prompt fields.	Configuration reference	71	Hub

Hub configuration reference

Hub accepts YAML in this layout:

.paseo/
├── hub.yml
└── workflows/
    ├── <workflow>.yml
    └── partials/
        └── <partial>.md

Only direct .yml children of .paseo/workflows/ are workflows. Each file contains one trigger and its ordered steps. There is no manifest, includes, uses, reusable step, workflow call, or inheritance.

hub.yml

.paseo/hub.yml contains named project resources. Names are map keys and are not repeated inside each object.

environments:
  paseo:
    kind: daemon
    daemon: laptop
    cwd: /Users/you/code/paseo
  hub:
    kind: daemon
    daemon: devbox
    cwd: /workspace/hub

agents:
  codex-safe:
    provider: codex
    model: gpt-5.5
    thinkingOptionId: xhigh
    options:
      sandbox_workspace_write:
        writable_roots: [/var/cache/npm]
        network_access: false
  claude:
    provider: claude
    mode: bypassPermissions

The only top-level keys are environments and agents. A triggers key is rejected with a migration error.

Environments

Field	Required	Notes
kind	yes	daemon, fly, or docker; workflow steps must select a daemon environment.
daemon	daemon only	Registered daemon slug, resolved when the revision activates.
cwd	daemon only	Absolute working directory on the daemon.
image	fly/docker	Image name.
worktree	no	branch-off, checkout-branch, or checkout-pr target.

For worktree, use newBranch and optional base with branch-off, branch with checkout-branch, or positive prNumber with checkout-pr.

environments:
  review:
    kind: daemon
    daemon: build-server
    cwd: /workspace/project
    worktree:
      mode: branch-off
      newBranch: paseo/review
      base: origin/main

An environment is a complete named object. A step selects its name; objects are not inherited, merged, or partially overridden.

Named agents

Each agent is one complete provider configuration:

Field	Required	Notes
provider	yes	Provider ID.
model	no	Provider model ID.
mode	no	Paseo mode ID.
thinkingOptionId	no	Provider thinking option.
options	no	JSON-safe provider-native options, preserving names and nesting.

A named selection preserves the complete object, including structured options. Named agents have no parent, patch, or per-step override.

Hub passes model, mode, thinkingOptionId, and options to the Paseo daemon without renaming or flattening provider fields. The selected daemon validates them against its current provider schema; Hub does not translate provider-native options.

Workflow files

.paseo/workflows/review.yml:

name: review
on: manual.run
max_runtime: 2h
filters:
  from_users: [automation]
inputs:
  repo:
    type: string
    required: true
    choices: [paseo, hub]
steps:
  - id: inspect
    environment: ${{ paseo.inputs.repo }}
    max_runtime: 30m
    idle_timeout: 5m
    agent: codex-safe
    prompt:
      - text: ${{ paseo.prompt }}

Field	Required	Notes
name	yes	Workflow name, unique across the bundle.
on	yes	Provider event such as manual.run or discord.mention.
max_runtime	yes	Hard limit for the complete run, up to 24h.
filters	yes	Provider resource filters and the sender allowlist.
inputs	no	Typed invocation headers.
values	no	Named expressions.
steps	yes	One or more ordered inline steps.

Inputs and values

Inputs have type: string | number | boolean, plus optional required, default, and choices. required and default cannot be combined. Finite choices are required when an input can choose authority such as an environment or named agent.

Values bind expressions:

values:
  selected_environment: ${{ steps.classify.outputs.environment }}
  selected_agent: ${{ steps.classify.outputs.agent }}

Expressions may read declared paseo.inputs, earlier steps.<id>.outputs, and values. The grammar supports paths, JSON literals, parentheses, !, ==, !=, &&, ||, and ??.

An environment or dynamic named-agent expression must have a finite set of possible string results at activation. Every result must name a configured resource. Runtime selection never falls back to another environment or agent.

Steps

Field	Required	Notes
id	yes	Unique within the workflow.
environment	yes	Literal environment name or finite expression resolving to one.
max_runtime	yes	Step hard limit.
idle_timeout	yes	Idle limit no longer than max_runtime.
agent	yes	Named agent, finite expression selecting a named agent, or complete static inline agent.
prompt	yes	Ordered text and include blocks.
if	no	Expression deciding whether the step runs.
env	no	Environment variables from connection values.
output.schema	no	JSON Schema for structured step output.
allow_outputs	no	Provider output capabilities with optional max and required.
auto_archive	no	Archive the agent after the step ends.
github	no	Explicit GitHub authority for this step.

An inline agent is static and complete:

agent:
  provider: codex
  model: gpt-5.5
  options:
    approval_policy: never
    sandbox_mode: read-only

An expression-valued agent selects a named agent. Dynamic provider fields inside an inline object are rejected.

Prompt semantics

prompt:
  - include: partials/review.md
  - text: |
      <user-prompt>
      ${{ paseo.prompt }}
      </user-prompt>

${{ paseo.prompt }} is the normalized request after the provider marker and declared leading key=value inputs are removed. It is not rewritten or augmented with event context.

${{ paseo.context }} opts that step into provider context materialization and renders the result as JSON in the prompt. It is available only in prompt text. Hub does not inject it unless the workflow authors that expression.

Includes resolve relative to .paseo/workflows/, so shared partials use partials/<name>.md. Missing files, absolute or traversing paths, symlinks, content mismatches, and files outside the partial tree are rejected.

Output capabilities

Authority stays on the step that uses it:

allow_outputs:
  - type: discord.reply
    max: 1
    required: true

Slack workflows use slack.reply; Discord workflows use discord.reply. The declaration grants hub.reply, and the prompt must tell the agent to call it. GitHub has no reply output; use an explicit github block.

Every step receives hub.finish_execution. The prompt must tell the agent when to call it; Hub does not append completion or reply instructions. If output.schema is present, hub.finish_execution requires an output value that matches the schema. If an allow_outputs entry is required: true, the agent must emit that output before finishing. max defaults to 1.

Migrating a monolithic file

Keep environments in hub.yml, convert the environment list to a named map, and move each former trigger into its own .paseo/workflows/<name>.yml file. Move shared prompt files to .paseo/workflows/partials/. Define complete named agent configurations under agents and replace dynamic provider fields with finite named-agent selection.

Hub does not read TOML or a monolithic triggers section, and the CLI does not rewrite either format.

See Workflows for complete routing examples.