OpenViking Memory

OpenViking is a long-term semantic memory store addressed by viking:// URIs.
This client has no lifecycle hooks, so nothing is recalled or captured
automatically — you drive both halves of the loop with the openviking MCP
tools.

Core tools, available on every supported deployment:

• Recall: find, search, read, list, grep, glob
• Persist: remember, add_resource
• Maintain: forget, health

Some deployments register more than the core set — tree, write, edit,
list_watches, cancel_watch. These are optional: which ones exist depends
on the server version and hosting mode (the managed cloud service trims some
of them). Check the session's registered tool list; if any optional tool is
present, read references/optional-tools.md
before using it. Never call a tool that is not registered, and do not fall
back to raw HTTP. If no OpenViking tools are registered at all, continue
without memory.

Recall: at task start

1. Decide whether the request warrants memory. Retrieve for executable or

multi-step work, anything touching a system you may have seen before, and
recovery from failures. Skip retrieval for small talk and one-off trivia.

1. Build one concise query from the task goal, domain objects, intended

operation, and constraints. After a failure, include the failed operation
and the stable part of the error message.

1. Call find (fast, ranked results with URI + abstract + score) with

limit around 5-10. Use search when deeper intent analysis helps, or use
search with mode="context" for a server-assembled, token-budgeted
context block. In list mode, scope with target_uri when you know where to look, e.g.
viking://~/memories/experiences for prior task experience. viking://~ is
the home alias for your own user root; a server that predates the alias
rejects every viking://~ URI with INVALID_URI. Against such a server use
the explicit viking://user/<user_id>/... root taken from a URI already
visible in this session, or drop target_uri and keep the hits whose URI
contains /memories/experiences/. Never guess a user ID.

1. Judge results by task and environment fit, not title similarity. read the

one to three exact file URIs likely to change how you execute. Ignore
sidecar files such as .abstract.md, .overview.md, and
.relations.json.

1. If nothing relevant comes back, proceed without memory. Make at most one

focused follow-up search when execution fails for a materially new reason.

Treat retrieved memory as advisory. Priority order: system and developer
instructions, the current user request, current environment and tool evidence,
then memory. Verify commands, paths, and versions against the present task;
prior success never authorizes a destructive action now.

Persist: during and after work

Because capture is not automatic here, durable information is lost unless you
store it. When you encounter something worth keeping, persist it in the same
session:

• remember(messages) — the default. Pass the key exchange or a short factual

summary as role-tagged messages; the server extracts and files memories
(preferences, entities, events, experience) on its own. Use it when the user
says "remember this", states a lasting preference or decision, or when a
hard-won lesson (root cause, working procedure, environment quirk) emerges.

• add_resource — to import external documents or URLs as searchable

resources. Use it for any file, URL, or repo the user hands you; never copy
its text into a file with write instead.

• When you need a note you author at a known location (under viking://~/ —

your own user root — or viking://resources/), the optional write / edit
tools cover that — see
references/optional-tools.md. If they are
not registered, fall back to remember.

What to persist: stable preferences and conventions, environment facts,
decisions with their rationale, and reusable procedures or fixes. What not to
persist: secrets and credentials, transient state, speculation, or bulk
transcript dumps — store conclusions, not scrollback.

File resources deliberately

Resource directory rules do not apply to Memory; use remember or session
commit and let the extraction system organize it. Before add_resource, keep
the existing Resource layout and account policy, choose shared versus
identity-private scope, and avoid duplicate source roots. Use parent for a new
source and exact to for refresh.

Example

User asks to fix a failing deployment:

1. find with query deployment image pull failure private registry,

target_uri: "viking://~/memories/experiences".

1. read the most relevant experience URI; check its assumptions against the

current cluster before applying its steps.

1. Fix the issue, verify the live result.
2. remember a short summary of the root cause and the working fix so the

next session can recall it.