Kiro

Auto-wired

Setup detects Kiro and writes both an MCP entry (~/.kiro/settings/mcp.json) and a steering rule (~/.kiro/steering/sigil.md).

Setup

sigil init
sigil doctor

Manual config

~/.kiro/settings/mcp.json

{
  "mcpServers": {
    "sigil": {
      "command": "/Users/you/.sigil/bin/sigil-mcp",
      "args": []
    }
  }
}

Use sigil register --print for the correct path on your machine.

Steering rule

Kiro’s steering files are the right home for memory instructions — they’re loaded consistently rather than depending on a system prompt you can’t see.

~/.kiro/steering/sigil.md

# Memory (Sigil)

Sigil is a persistent memory shared with every other AI agent on this machine.

- Call `prime` at the start of every session.
- Before answering about this project, past decisions, or the user's
  preferences, call `search`.
- When the user shares a preference, decision, or constraint, call
  `remember` with a short self-contained statement.
- Pass `cwd` on `search`, `remember`, and `ingest` so memory attaches to
  the right project.
- To read a stored document in full: `list_documents` then `get_document`.

Setup writes a version of this automatically. Edit it to taste — it’s yours.

Available tools

Kiro gets all thirteen MCP tools. The ones that matter most in a Kiro session:

Tool
prime	Load standing context at session start
search	Facts by natural-language query
search_entity	People, projects, services by name
traverse_graph	Walk relations outward from an entity
remember	Save atomic facts
ingest	Store a document whole

Spec-driven workflows

Kiro’s spec workflow is a good fit for ingest. When a spec is finalized, store it:

sigil ingest ./.kiro/specs/payments-v2/design.md

The full text is retained and facts are extracted from it — so a later question about the design gets an atomic answer, and get_document gets the source when you need the whole thing.

Troubleshooting

sigil connect --clients kiro
sigil doctor --deep

Restart Kiro after registering; it reads mcp.json at startup.

If tools are available but never called, strengthen the steering rule — particularly the “before answering” line.