desplega-ai/agent-swarm/user-management

User Management

Manage the swarm's user registry — creating, updating, resolving, and listing users. Users link human identities across platforms (Slack, GitHub, GitLab, Linear, email) so the swarm can track who requested work.

Migration note (2026-05): the old top-level identity fields (slackUserId, linearUserId, githubUsername, gitlabUsername) and the fuzzy name lookup were removed in lockstep with the user-identity refactor. Use the new {kind, externalId} shape instead. Old payloads now fail Zod validation at runtime — there is no compatibility shim.

When to Create Users

Create a new user when:

• An unknown Slack user sends a message to the swarm (resolve-user with {kind: "slack", externalId: "<U_X>"} returns no match)
• An unknown GitHub user opens an issue or PR that triggers a task
• An unknown GitLab user creates an issue or MR
• An unknown Linear user is assigned to or creates a synced issue
• A human explicitly asks to be registered

Do NOT create duplicate users. Always call resolve-user first — by {kind, externalId} AND, when you have it, by email — to check if the person already exists under a different platform identity.

Tools

Two MCP tools handle user management:

resolve-user — Find an existing user

Looks up a user by an (kind, externalId) pair OR by email (primary or alias). Use this BEFORE creating a new user. Caller MUST supply either (kind + externalId) OR email — empty input is rejected.

# Lookup by platform identity
resolve-user with:
  kind: "slack"
  externalId: "U12345"
 
# OR
resolve-user with:
  kind: "github"
  externalId: "octocat"
 
# OR
resolve-user with:
  kind: "gitlab"
  externalId: "octocat"
 
# OR
resolve-user with:
  kind: "linear"
  externalId: "uuid-from-linear"
 
# OR lookup by email (primary or alias)
resolve-user with:
  email: "user@example.com"

Email lookup is case-insensitive and checks the primary email column AND every entry in emailAliases.

manage-user — CRUD operations

Identities are managed via a declarative identities: [{kind, externalId}, ...] array:

• On create: every entry in identities is linked (each emits identity_added).
• On update: identities is treated as the full desired set. Helper computes a diff against the user's current identities — adds emit identity_added, removes emit identity_removed. Omit the field entirely to leave identities untouched.

# Create a new user
manage-user with:
  action: "create"
  name: "Jane Doe"                            # Required
  email: "jane@company.com"                   # Optional
  role: "engineering lead"                    # Optional, free-form
  identities:                                 # Optional
    - kind: "slack"
      externalId: "U12345"
    - kind: "github"
      externalId: "janedoe"
    - kind: "linear"
      externalId: "uuid-from-linear"
  emailAliases: ["jane.doe@company.com"]      # Optional
  timezone: "America/New_York"                # Optional
  notes: "Prefers async communication"        # Optional
  dailyBudgetUsd: 25.0                        # Optional — null/omitted = unlimited
  status: "active"                            # Optional — "invited" | "active" | "suspended"
 
# List all users
manage-user with:
  action: "list"
 
# Get a specific user
manage-user with:
  action: "get"
  userId: "<uuid>"
 
# Update a user (declarative — pass the FULL desired set for `identities`)
manage-user with:
  action: "update"
  userId: "<uuid>"
  identities:                                 # FULL desired set; diff is applied
    - kind: "slack"
      externalId: "U12345"
    - kind: "github"
      externalId: "janedoe-new"               # renamed → identity_added + identity_removed
  emailAliases: ["jane.doe@company.com", "jd@example.com"]   # emits email_added/email_removed per delta
 
# Delete a user
manage-user with:
  action: "delete"
  userId: "<uuid>"

Workflow: New Slack User

1. Receive a message from an unknown Slack user (e.g., external ID U_NEW123).
2. Call resolve-user with {kind: "slack", externalId: "U_NEW123"} — returns null.
3. Get the user's Slack profile (name, email) via slack-read or from the message metadata.
4. Call resolve-user with {email: "<their-email>"} — check if they exist under a different platform.
5. If found: call manage-user with action: "update", passing the user's FULL identity set including the new Slack entry.
6. If not found: call manage-user with action: "create", including name, email, and identities: [{kind: "slack", externalId: "U_NEW123"}].

Workflow: New GitHub User

1. Receive a webhook from an unknown GitHub user (e.g., login octocat).
2. Call resolve-user with {kind: "github", externalId: "octocat"} — returns null.
3. Call manage-user with action: "create", including at minimum name and identities: [{kind: "github", externalId: "octocat"}].
4. If you know their email (from the webhook payload), include it.

Workflow: Linking Identities

When you discover a known user is also active on another platform:

1. Call resolve-user to find them by their known identity.
2. Call manage-user with action: "update", passing the FULL desired identities set (existing + the new one).

Example: You know "Jane" by Slack ID, and discover her GitHub login:

resolve-user kind: "slack" externalId: "U_JANE"
→ returns user with id "abc-123" (identities currently: [{kind: "slack", externalId: "U_JANE"}])
 
manage-user action: "update" userId: "abc-123"
  identities:
    - kind: "slack"
      externalId: "U_JANE"
    - kind: "github"
      externalId: "janedoe"
→ adds GitHub identity (emit identity_added). Slack identity unchanged.

Important Notes

• manage-user is lead-only — workers cannot use it for any action (the lead check happens before action dispatch). Workers must use resolve-user for lookups.
• The (kind, externalId) PK on user_external_ids means the same identifier cannot be linked to two different users — a re-link to a different user surfaces as a PK collision (the operator can investigate via the People page merge flow).
• Deleting a user clears requestedByUserId on all their associated tasks (sets to null).
• Email aliases are case-insensitive for resolution. Editing them via manage-user update emits email_added / email_removed events per delta.
• The preferredChannel field defaults to "slack" and can be "slack", "email", "github", "gitlab", or any custom string.
• dailyBudgetUsd is null = unlimited.
• status lifecycle: invited → active → suspended. The CHECK constraint rejects other values.