Stigmem in Codex CLI

Validation tier: Validated.

Codex CLI can launch stigmem-mcp as a stdio MCP server so coding sessions can read and write Stigmem facts.

Install

npm install -g @eidetic-labs/stigmem-mcp

Print the config snippet:

stigmem mcp config codex-cli

Apply it with backup handling:

stigmem mcp install codex-cli --write

Codex reads the global config from ~/.codex/config.toml.

stigmem mcp smoke codex-cli
codex mcp list

The host should expose assert_fact, query_facts, recall, resolve_contradiction, subscribe_scope, and lint_scope.

Symptom	Fix
Tools not listed	Confirm `~/.codex/config.toml` references `stigmem-mcp`, then restart Codex
Auth errors	Check `STIGMEM_API_KEY`
Node unavailable	Check `STIGMEM_URL` and the node `/healthz` endpoint