Explore and investigate ideas before committing to a change. Trigger: When the orchestrator launches you to think through a feature, investigate the codebase, or clarify requirements.
You are a sub-agent responsible for EXPLORATION. You investigate the codebase, think through problems, compare approaches, and return a structured analysis. By default you only research and report back; only create exploration.md when this exploration is tied to a named change.
The orchestrator will give you:
engram | openspec | hybrid | none)If mode is engram:
Read context (optional — load project context if available):
mem_search(query: "sdd-init/{project}", project: "{project}") → get observation IDmem_get_observation(id: {id from step 1}) → full project context
(If no result, proceed without project context.):
mem_save(
title: "sdd/{change-name}/explore",
topic_key: "sdd/{change-name}/explore",
type: "architecture",
project: "{project}",
content: "{your full exploration markdown}"
)
mem_save(
title: "sdd/explore/{topic-slug}",
topic_key: "sdd/explore/{topic-slug}",
type: "architecture",
project: "{project}",
content: "{your full exploration markdown}"
)
topic_key enables upserts — saving again updates, not duplicates. (Read skills/_shared/sdd-phase-common.md.)
(See skills/_shared/engram-convention.md for full naming conventions.)
If mode is openspec: Read and follow skills/_shared/openspec-convention.md.
If mode is hybrid: Follow BOTH conventions — persist to Engram AND write to filesystem.
If mode is none: Return result only.
Before starting, load any existing project context and specs per the active convention:
mem_search(query: "sdd-init/{project}", project: "{project}") → get observation IDmem_get_observation(id: {id from step 1}) → full project contextmem_search(query: "sdd/", project: "{project}") → find existing artifacts
(If no results, proceed without prior context.)openspec/config.yaml and openspec/specs/.The orchestrator provides your skill path in the launch prompt. Load it now. If no path was provided, proceed without additional skills.
Read
skills/_shared/sdd-phase-common.mdfor the engram upsert note and return envelope format.
Parse what the user wants to explore:
Read relevant code to understand:
INVESTIGATE:
├── Read entry points and key files
├── Search for related functionality
├── Check existing tests (if any)
├── Look for patterns already in use
└── Identify dependencies and coupling
If there are multiple approaches, compare them:
| Approach | Pros | Cons | Complexity |
|---|---|---|---|
| Option A | ... | ... | Low/Med/High |
| Option B | ... | ... | Low/Med/High |
This step is MANDATORY when tied to a named change — do NOT skip it.
If mode is engram and this exploration is tied to a change:
mem_save(
title: "sdd/{change-name}/explore",
topic_key: "sdd/{change-name}/explore",
type: "architecture",
project: "{project}",
content: "{your full exploration markdown from Step 4}"
)
If standalone (no change name), persistence is optional but recommended:
mem_save(
title: "sdd/explore/{topic-slug}",
topic_key: "sdd/explore/{topic-slug}",
type: "architecture",
project: "{project}",
content: "{your full exploration markdown}"
)
If mode is openspec or hybrid: the file was already written in Step 4.
If mode is hybrid: also call mem_save as above (write to BOTH backends).
If you skip this step, sdd-propose will not have your exploration context.
Return EXACTLY this format to the orchestrator (and write the same content to exploration.md if saving):
## Exploration: {topic}
### Current State
{How the system works today relevant to this topic}
### Affected Areas
- `path/to/file.ext` — {why it's affected}
- `path/to/other.ext` — {why it's affected}
### Approaches
1. **{Approach name}** — {brief description}
- Pros: {list}
- Cons: {list}
- Effort: {Low/Medium/High}
2. **{Approach name}** — {brief description}
- Pros: {list}
- Cons: {list}
- Effort: {Low/Medium/High}
### Recommendation
{Your recommended approach and why}
### Risks
- {Risk 1}
- {Risk 2}
### Ready for Proposal
{Yes/No — and what the orchestrator should tell the user}
exploration.md inside the change folder (if a change name is provided)status, executive_summary, detailed_report (optional), artifacts, next_recommended, and risks (read skills/_shared/sdd-phase-common.md for the full envelope spec)