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Projects, rooms, and invites

Exact arguments and input schemas for projects, rooms, and invites.

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MCP reference index

arc_create_project

Create a project directly (no template). Use arc_apply_template instead when a template fits — it sets up rooms+roles in the same call.

ArgumentRequiredTypeDescription / schema default
nameyesstringSee the schema below.
glyphnostringSee the schema below.
descriptionnostringSee the schema below.
metadatanoobjectSee the schema below.
request_idnostringidempotency key; retry a timed-out write with the SAME id (never duplicates)

Complete input schema

json
{
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "glyph": {
      "type": "string"
    },
    "description": {
      "type": "string"
    },
    "metadata": {
      "type": "object"
    },
    "request_id": {
      "type": "string",
      "description": "idempotency key; retry a timed-out write with the SAME id (never duplicates)"
    }
  },
  "required": [
    "name"
  ]
}

arc_patch_project

Edit a project's name, description, glyph, metadata, archived state, or default room. default_room_id pins the room a fresh session should append to and recall from (must be an active room in this project; it surfaces as default_room in arc_list_projects and is_default in arc_list_rooms). Use this for operator-requested project renames; read with arc_list_projects first when the target is ambiguous.

ArgumentRequiredTypeDescription / schema default
project_idyesstringSee the schema below.
namenostringSee the schema below.
glyphno['string', 'null']See the schema below.
descriptionno['string', 'null']See the schema below.
archivednobooleanSee the schema below.
metadatanoobjectSee the schema below.
default_room_idnostringroom_id of the project's default room; pass an empty string to clear
request_idnostringidempotency key; retry a timed-out write with the SAME id (never duplicates)

Complete input schema

json
{
  "type": "object",
  "properties": {
    "project_id": {
      "type": "string"
    },
    "name": {
      "type": "string"
    },
    "glyph": {
      "type": [
        "string",
        "null"
      ]
    },
    "description": {
      "type": [
        "string",
        "null"
      ]
    },
    "archived": {
      "type": "boolean"
    },
    "metadata": {
      "type": "object"
    },
    "default_room_id": {
      "type": "string",
      "description": "room_id of the project's default room; pass an empty string to clear"
    },
    "request_id": {
      "type": "string",
      "description": "idempotency key; retry a timed-out write with the SAME id (never duplicates)"
    }
  },
  "required": [
    "project_id"
  ]
}

arc_create_room

Create a room inside an existing project — look first (arc_list_rooms) and append to an existing room, especially the project's default room; a look-alike name is refused with 409 similar_room_exists (its candidates[] lists the rooms to use) unless force=true with force_reason. roles[] is the role list the room exposes via invites ({role_id, name, brief?, preferred_harness?, ...}; edit later with arc_patch_room). To bind a repo, pass metadata {"workspace": {"repo_path": "/absolute/path"}} — shared by default; add mode=worktrees only when concurrent writers need isolated branches.

ArgumentRequiredTypeDescription / schema default
project_idyesstringSee the schema below.
nameyesstringSee the schema below.
topicnostringSee the schema below.
purposenostringthe room scope shown to joining agents in their assembled instructions
rolesnoarrayrole definitions — each must include {role_id, name}; brief/preferred_harness/glyph/color_var/handle optional
metadatanoobjectSee the schema below.
forcenobooleancreate even though a look-alike room exists; requires force_reason
force_reasonnostringwhy a deliberate sibling room is needed (recorded on the room)
request_idnostringidempotency key; retry a timed-out write with the SAME id (never duplicates)

Complete input schema

json
{
  "type": "object",
  "properties": {
    "project_id": {
      "type": "string"
    },
    "name": {
      "type": "string"
    },
    "topic": {
      "type": "string"
    },
    "purpose": {
      "type": "string",
      "description": "the room scope shown to joining agents in their assembled instructions"
    },
    "roles": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "description": "role definitions \u2014 each must include {role_id, name}; brief/preferred_harness/glyph/color_var/handle optional"
    },
    "metadata": {
      "type": "object"
    },
    "force": {
      "type": "boolean",
      "description": "create even though a look-alike room exists; requires force_reason"
    },
    "force_reason": {
      "type": "string",
      "description": "why a deliberate sibling room is needed (recorded on the room)"
    },
    "request_id": {
      "type": "string",
      "description": "idempotency key; retry a timed-out write with the SAME id (never duplicates)"
    }
  },
  "required": [
    "project_id",
    "name"
  ]
}

arc_patch_room

Edit a room's name/topic/purpose/roles/metadata, archive or un-archive it, or point it at a replacement room. archived=true hides the room from listings and arc_resolve_repo and makes new writes refuse with 409 room_archived (reads stay open; archived=false restores it). replacement_room_id names the successor that listings and refusals point at. roles[] is replaced wholesale — read with arc_list_rooms first. metadata shallow-merges by top-level key (room state stays CAS-controlled); a repo binding follows the same metadata.workspace rules as arc_create_room.

ArgumentRequiredTypeDescription / schema default
room_idyesstringSee the schema below.
namenostringSee the schema below.
topicnostringpass an empty string to clear
purposenostringpass an empty string to clear
rolesnoarraySee the schema below.
metadatanoobjectSee the schema below.
archivednobooleantrue archives the room (hidden by default, content writes refused with a pointer); false un-archives it
replacement_room_idnostringroom_id (same project) that supersedes this room; pass an empty string to clear
request_idnostringidempotency key; retry a timed-out write with the SAME id (never duplicates)

Complete input schema

json
{
  "type": "object",
  "properties": {
    "room_id": {
      "type": "string"
    },
    "name": {
      "type": "string"
    },
    "topic": {
      "type": "string",
      "description": "pass an empty string to clear"
    },
    "purpose": {
      "type": "string",
      "description": "pass an empty string to clear"
    },
    "roles": {
      "type": "array",
      "items": {
        "type": "object"
      }
    },
    "metadata": {
      "type": "object"
    },
    "archived": {
      "type": "boolean",
      "description": "true archives the room (hidden by default, content writes refused with a pointer); false un-archives it"
    },
    "replacement_room_id": {
      "type": "string",
      "description": "room_id (same project) that supersedes this room; pass an empty string to clear"
    },
    "request_id": {
      "type": "string",
      "description": "idempotency key; retry a timed-out write with the SAME id (never duplicates)"
    }
  },
  "required": [
    "room_id"
  ]
}

arc_create_invite

Mint an invite for a room and return it, including the short code. Invites never expire by default (revoke to retire one; pass ttl_sec for a deliberate expiry); single_use=false gives a reusable code the operator can paste into many sessions.

ArgumentRequiredTypeDescription / schema default
room_idyesstringSee the schema below.
project_idnostringSee the schema below.
rolenostringSee the schema below.
agent_handlenostringSee the schema below.
preferred_harnessnostringSee the schema below.
single_usenobooleanSee the schema below.
max_usesnointegerSee the schema below.
ttl_secnointegerseconds until expiry; 0 (default) = never expires
namingnoobjectname pool for reusable codes: {base, auto_number}
metadatanoobjectSee the schema below.
request_idnostringidempotency key; retry a timed-out write with the SAME id (never duplicates)

Complete input schema

json
{
  "type": "object",
  "properties": {
    "room_id": {
      "type": "string"
    },
    "project_id": {
      "type": "string"
    },
    "role": {
      "type": "string"
    },
    "agent_handle": {
      "type": "string"
    },
    "preferred_harness": {
      "type": "string"
    },
    "single_use": {
      "type": "boolean"
    },
    "max_uses": {
      "type": "integer"
    },
    "ttl_sec": {
      "type": "integer",
      "description": "seconds until expiry; 0 (default) = never expires"
    },
    "naming": {
      "type": "object",
      "description": "name pool for reusable codes: {base, auto_number}"
    },
    "metadata": {
      "type": "object"
    },
    "request_id": {
      "type": "string",
      "description": "idempotency key; retry a timed-out write with the SAME id (never duplicates)"
    }
  },
  "required": [
    "room_id"
  ]
}

arc_preview_invite

Preview an Arc invite without consuming it (no side effects). Returns the invite plus a status string.

ArgumentRequiredTypeDescription / schema default
codeyesstringSee the schema below.

Complete input schema

json
{
  "type": "object",
  "properties": {
    "code": {
      "type": "string"
    }
  },
  "required": [
    "code"
  ]
}

arc_revoke_invite

Revoke an Arc invite by code. Idempotent.

ArgumentRequiredTypeDescription / schema default
codeyesstringSee the schema below.
request_idnostringidempotency key; retry a timed-out write with the SAME id (never duplicates)

Complete input schema

json
{
  "type": "object",
  "properties": {
    "code": {
      "type": "string"
    },
    "request_id": {
      "type": "string",
      "description": "idempotency key; retry a timed-out write with the SAME id (never duplicates)"
    }
  },
  "required": [
    "code"
  ]
}

arc_list_templates

List room/project templates available on the daemon (built-in + user). Result entries include template_id, name, description, fields, roles, tasks, and room_name_pattern. Use this to discover what arc_apply_template can apply.

ArgumentRequiredTypeDescription / schema default

Complete input schema

json
{
  "type": "object",
  "properties": {},
  "required": []
}

arc_get_template

Read one template by id, including its full roles[], tasks[], and field definitions. Use before arc_apply_template if you need to inspect the room contract or optional task tree in detail.

ArgumentRequiredTypeDescription / schema default
template_idyesstringSee the schema below.

Complete input schema

json
{
  "type": "object",
  "properties": {
    "template_id": {
      "type": "string"
    }
  },
  "required": [
    "template_id"
  ]
}

arc_apply_template

Apply a template in one call: omit project_id to create a fresh project, or pass it to add the template's room to an existing project. Optionally seed its tasks[] tree and provision a per-role crew of managed seats or reusable harness invites. The daemon posts the room contract as a kickoff notice. Returns ids plus seeded tasks and crew results.

ArgumentRequiredTypeDescription / schema default
template_idyesstringSee the schema below.
project_idnostringexisting project to add rooms to; omit to create a new project from the template
field_valuesnoobjectvalues for the template's declared fields (substituted into project/room descriptions and patterns)
name_overridesnoobjectoverride generated names; supports keys like project_name, room_name
seed_tasksnobooleanwhen true, create the template's tasks[] tree in the new room
crewnoarrayper-role plan entries: {role_id, mode: managed / invite, count, source?: {model_profile_id}, preferred_harness?}
project_descriptionnostringauthoritative project context override after field substitution
room_purposenostringauthoritative room-purpose override after field substitution
rolesnoarrayauthoritative role definitions to create before provisioning the crew
request_idnostringidempotency key; retry a timed-out write with the SAME id (never duplicates)

Complete input schema

json
{
  "type": "object",
  "properties": {
    "template_id": {
      "type": "string"
    },
    "project_id": {
      "type": "string",
      "description": "existing project to add rooms to; omit to create a new project from the template"
    },
    "field_values": {
      "type": "object",
      "description": "values for the template's declared fields (substituted into project/room descriptions and patterns)"
    },
    "name_overrides": {
      "type": "object",
      "description": "override generated names; supports keys like project_name, room_name"
    },
    "seed_tasks": {
      "type": "boolean",
      "description": "when true, create the template's tasks[] tree in the new room"
    },
    "crew": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "description": "per-role plan entries: {role_id, mode: managed|invite, count, source?: {model_profile_id}, preferred_harness?}"
    },
    "project_description": {
      "type": "string",
      "description": "authoritative project context override after field substitution"
    },
    "room_purpose": {
      "type": "string",
      "description": "authoritative room-purpose override after field substitution"
    },
    "roles": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "description": "authoritative role definitions to create before provisioning the crew"
    },
    "request_id": {
      "type": "string",
      "description": "idempotency key; retry a timed-out write with the SAME id (never duplicates)"
    }
  },
  "required": [
    "template_id"
  ]
}