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retrieve-memory

Agents & models

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Updated 10-15 20:34

About this skill

Retrieve Memory

Default rule: if you cannot cite a source-of-truth file/doc/ADR from the repo, consult memories first, then proceed. The memory model is documented in [[mem.concept.doctrine.memory-model]].

Tool preference

If your harness supports MCP tools and doctrine's MCP server is connected (you see memory_search, memory_retrieve, memory_show, memory_list in your tool list), prefer these MCP tools over the CLI. They return machine-parseable JSON text in the MCP content block without spawning a shell, and memory_show enriches results with resolved backlinks.

Progressive disclosure (MCP pattern)

  1. memory_search — scope-constrained discovery first. Always supply at least one selector (path, glob, tag, type, or free-text query). Metadata only, no bodies. Rows include a held_back_on_retrieve flag — do not treat high-risk memories as consumable knowledge.
    • Find vs browse. Free text is floored: only memories with lexical or exact-key evidence for the query come back; selectors alone browse every scope match, severity first. Either way you get one page (20 by default); page on with offset = next_offset (CLI: --page).
    • Empty is an answer. An empty free-text result means "no match", not "empty corpus" — reword with the memory's likely terms, or drop the query and browse by scope.
  2. memory_retrieve — safe context recall for candidates identified in step 1. Trust holdback enforced; low-trust high-severity memories are suppressed automatically.
  3. memory_show — full inspection only when you need the complete picture. Use view: summary for token efficiency. Held-back memories carry a warning; do not consume them as knowledge.
  4. memory_list — browse/index only. Prefer scoped memory_search.

When MCP tools are not available (e.g. in a plain shell environment), fall back to the doctrine memory CLI commands described below.

Two surfaces

  • doctrine memory retrieve — see doctrine memory retrieve --help for the data-not-instruction framing and the non-bypassable trust holdback.
  • doctrine memory search — ranked rows that keep risk visible (holdback-exempt). Use it to discover and triage, including the risky memories retrieve hides.
  • doctrine memory show <UID|KEY> — read one memory's full body.

Graph traversal

  • doctrine memory backlinks <REF> — discover reverse edges: which memories point to this one. Use when you land on a memory and need to know what depends on it.
  • doctrine memory retrieve --expand N — expand the result graph by N hops along [[relation]] edges. Each hop pulls in directly-connected memories. Use for context when a single memory is too narrow.
  • --lifespan filter (on retrieve and search) — restrict to memories with a lifespan at or above the given threshold. identity returns everything; semantic filters out episodic/working; procedural excludes working. Use to suppress transient noise in a deep dive.

When the question is not memory-shaped

doctrine memory search reaches only the memory corpus. For a "where does this live / what is the right way here?" question whose answer may be an ADR, spec, slice, RFC, or backlog item, use doctrine search <query> instead — one ranked query over the entity corpus. It is entities-only, and its default kind set omits policies and standards; lib:reference/using-doctrine.md gives the scope and how to widen it.

Procedure (fast → thorough)

  1. Scoped query first. Run doctrine memory retrieve scoped to the concrete files you expect to read or edit, plus the command context you are about to run (ask --help for flags; lib:reference/using-doctrine.md for the verb model). Glob-scoped memories still match path scopes — no separate flag needed. Scope probes are OR'd; type/status are AND hard filters, so do not over-filter unless certain.

  2. Tune the surface. See doctrine memory retrieve --help for --limit and --min-trust (raises, never lowers, the default trust floor).

  3. Inspect risk. If search shows risky or held-back memories relevant to the task, show them and judge — do not act blind to what retrieve withheld.

  4. Make connections. After retrieving, check the relations on key memories and follow edges to related knowledge: memory show <REF> renders relation rows; memory backlinks <REF> surfaces reverse edges; memory retrieve --expand 1 pulls the immediate graph neighbourhood. A memory in isolation is less useful than one with its edges visible.

  5. Validate before acting. Before relying on an old or high-severity memory, run doctrine memory validate <REF> to check for dangling relations, stale verification, and draft expiry. A memory that looked definitive six months ago may have drifted. Validate, then act.

What to trust

  • Ranking already encodes severity, weight, scope specificity, and recency — prefer the top rows.
  • A memory carries a verification state. Surface it qualitatively when you rely on one: never attested → say so; many commits since attestation → "treat with caution, its scope has churned"; recently attested → "scope is quiet".
  • If memories disagree, do not average — escalate (/consult, or update/supersede the stale one) before a consequential change.

Output discipline

When you act on a memory, cite its uid/key and the sources it points to. Run the scoped query before deep reading or editing, so glob-scoped gotchas surface while the change is still cheap.