24fec62d7f
Forked clean from public hackathon repo (Starfire-AgentTeam, BSL 1.1) with full rebrand to Molecule AI under github.com/Molecule-AI/molecule-monorepo. Brand: Starfire → Molecule AI. Slug: starfire / agent-molecule → molecule. Env vars: STARFIRE_* → MOLECULE_*. Go module: github.com/agent-molecule/platform → github.com/Molecule-AI/molecule-monorepo/platform. Python packages: starfire_plugin → molecule_plugin, starfire_agent → molecule_agent. DB: agentmolecule → molecule. History truncated; see public repo for prior commits and contributor attribution. Verified green: go test -race ./... (platform), pytest (workspace-template 1129 + sdk 132), vitest (canvas 352), build (mcp). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
131 lines
4.4 KiB
Markdown
131 lines
4.4 KiB
Markdown
# Communication Rules
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The hierarchy IS the topology. There is no manual connection wiring — communication is derived automatically from the parent/child structure.
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## The Rules
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| Direction | Allowed? | Example |
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|-----------|----------|---------|
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| Sibling <-> sibling | Yes | Marketing <-> Developer PM |
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| Parent -> child (PM delegates down) | Yes | Developer PM -> Frontend Agent |
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| Child -> parent (report up to PM) | Yes | Frontend Agent -> Developer PM |
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| Skip levels (grandchild -> grandparent) | No | Frontend Agent -> Business Core |
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| Cross-team (different parents) | No | Frontend Agent -> Operations |
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## Visual Example
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```
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Business Core
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+-- Marketing <--can talk--> Developer PM
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+-- Developer PM <--can talk--> Operations
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| +-- Frontend <--can talk--> Backend
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| +-- Backend <--can talk--> QA PM
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| +-- QA PM
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| +-- Auto Test <--can talk--> Manual Review
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| +-- Manual Review
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+-- Operations
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```
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- Developer PM can talk to Marketing and Operations (siblings) AND down to Frontend, Backend, QA PM (its children)
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- Frontend can only talk to Backend and QA PM (siblings) and up to Developer PM (its parent)
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- Frontend **cannot** talk to Marketing, Business Core, or Operations
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- Auto Test can only talk to Manual Review (sibling) and up to QA PM (its parent)
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## Access Check
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The platform validates every discovery request with a hierarchy check:
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```go
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func CanCommunicate(callerID, targetID string) bool {
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caller := db.GetWorkspace(callerID)
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target := db.GetWorkspace(targetID)
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// siblings — same parent (including root-level where both have no parent)
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if caller.ParentID != nil && target.ParentID != nil &&
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*caller.ParentID == *target.ParentID {
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return true
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}
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// root-level siblings — both have no parent
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if caller.ParentID == nil && target.ParentID == nil {
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return true
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}
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// parent talking to child
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if caller.ID == target.ParentID {
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return true
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}
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// child talking up to parent
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if target.ID == caller.ParentID {
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return true
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}
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return false
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}
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```
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`GET /registry/discover/:id` reads the caller's identity from the `X-Workspace-ID` header, runs `CanCommunicate()`, and returns **403 Forbidden** if the caller isn't allowed.
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## Peer Discovery
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Instead of a connections table, the platform derives reachable workspaces from the hierarchy:
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```
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GET /registry/:id/peers
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```
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Returns: siblings + children + parent (all workspaces this one can communicate with).
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```python
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async def get_reachable_workspaces(workspace_id: str) -> list:
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ws = db.GetWorkspace(workspace_id)
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reachable = []
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# siblings — same parent
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if ws.parent_id:
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siblings = db.GetChildren(ws.parent_id)
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reachable += [s for s in siblings if s.id != workspace_id]
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# children — own sub-workspaces
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children = db.GetChildren(workspace_id)
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reachable += children
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# parent — can talk up
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if ws.parent_id:
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parent = db.GetWorkspace(ws.parent_id)
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reachable.append(parent)
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return reachable
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```
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## What This Replaces
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The hierarchy-based model removes several components:
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| Removed | Replaced by |
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|---------|-------------|
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| `workspace_connections` table | `parent_id` on `workspaces` table |
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| `CONNECTION_CREATED` / `CONNECTION_REMOVED` events | `WORKSPACE_EXPANDED` / `WORKSPACE_COLLAPSED` events |
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| `/topology/connect` endpoint | Nesting via drag-into on canvas |
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| Canvas edge drawing UI | Edges auto-rendered from hierarchy |
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| Workspace whitelist table | `CanCommunicate()` hierarchy check |
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| Bundle connection definitions | Bundle `sub_workspaces` array |
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## Canvas Behavior
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- **No edge drawing.** Users don't wire workspaces — they **nest** them
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- Edges render **automatically** from parent/child relationships
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- The visual is a true **org chart**, not a flowchart
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- Dragging a workspace **inside** another workspace nests it as a sub-workspace
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## Why This Is Better
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The org chart IS the access control policy. Simpler schema, simpler security, simpler canvas. No configuration drift between "who should talk to whom" and "who can talk to whom."
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## Related Docs
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- [Team Expansion](../agent-runtime/team-expansion.md) — How nesting works
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- [System Prompt Structure](../agent-runtime/system-prompt-structure.md) — How peer capabilities are injected
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- [A2A Protocol](./a2a-protocol.md) — Discovery flow
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- [Platform API](./platform-api.md) — Endpoint reference
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