diff --git a/src/templates/case-template.md b/src/templates/case-template.md
index 2996eb77..14a3575a 100644
--- a/src/templates/case-template.md
+++ b/src/templates/case-template.md
@@ -357,6 +357,90 @@ Instead: Fix the issue, verify, then complete. For time-aware loops: generate mo
 
 ---
 
+## Spawn1337: Autonomous Agent Spawning
+
+You can spawn autonomous child agents to handle subtasks in parallel. Each agent runs in its own Claude session with full capabilities.
+
+### How to Spawn an Agent
+
+1. **Write a task spec file** (anywhere in your working directory):
+
+```markdown
+---
+agentId: my-agent-001
+name: My Research Agent
+type: explore
+priority: normal
+maxTokens: 150000
+maxCost: 0.50
+timeoutMinutes: 15
+canModifyParentFiles: false
+contextFiles: [src/auth.ts, src/types.ts]
+completionPhrase: RESEARCH_DONE
+outputFormat: structured
+---
+
+Your task instructions here. Be specific about what you want the agent to do
+and what output format you expect.
+```
+
+2. **Output the spawn tag** to trigger the orchestrator:
+
+```
+<spawn1337>path/to/task-spec.md</spawn1337>
+```
+
+The orchestrator will read the file, create the agent's workspace, and start a new Claude session.
+
+### Task Spec Fields
+
+| Field | Required | Default | Description |
+|-------|----------|---------|-------------|
+| `agentId` | Yes | - | Unique identifier for the agent |
+| `name` | Yes | - | Human-readable name |
+| `type` | No | `general` | `explore\|implement\|test\|review\|refactor\|research\|generate\|fix\|general` |
+| `priority` | No | `normal` | `low\|normal\|high\|critical` |
+| `maxTokens` | No | 150000 | Token budget |
+| `maxCost` | No | 0.50 | Cost budget in USD |
+| `timeoutMinutes` | No | 30 | Max runtime (max: 120) |
+| `canModifyParentFiles` | No | `false` | Whether agent can edit parent project files |
+| `contextFiles` | No | `[]` | Files to symlink into agent workspace |
+| `dependsOn` | No | `[]` | Agent IDs that must complete first |
+| `completionPhrase` | No | `AGENT_DONE` | Phrase agent outputs when finished |
+| `outputFormat` | No | `structured` | `markdown\|json\|code\|structured\|freeform` |
+
+### Monitoring and Communication
+
+```
+<spawn1337-status agentId="my-agent-001"/>
+```
+Query an agent's current status and progress.
+
+```
+<spawn1337-message agentId="my-agent-001">
+Please also check the error handling in auth.ts
+</spawn1337-message>
+```
+Send a message to a running agent (written to its comms directory).
+
+```
+<spawn1337-cancel agentId="my-agent-001"/>
+```
+Cancel a running agent (graceful shutdown).
+
+### Resource Limits
+
+- Max concurrent agents: 5
+- Max spawn depth: 3 (agents can spawn children)
+- Budget warning at 80%, shutdown at 100%, force kill at 110%
+- Default timeout: 30 min, max: 120 min
+
+### Agent Results
+
+When an agent completes, its result is written to `spawn-comms/result.md` in its workspace. The orchestrator notifies you via SSE events. Results include YAML frontmatter with status, summary, and files changed.
+
+---
+
 ## Code Standards
 
 ### Before Writing