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Mnemoverse Memory

by io.github.mnemoverse
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memory_list_recent

Read-onlyIdempotent

List the NEWEST memories first — no search query needed. Semantic search answers 'what do I know about X'; this answers 'what happened lately': resuming work after a break, catching up on a shared room ('any new messages?'), or reviewing what was saved recently. Pass since (your last-seen time) to get only what's new, and page through older entries with the returned cursor. Complete by construction WITHIN ONE SCOPE — nothing is skipped there, unlike a semantic search. A page is also bounded by SIZE, so a page of long entries comes back shorter than limit and hands you a cursor for the rest — nothing is dropped, and following the cursor is how you get it. To catch up on a shared room you MUST pass its address as domain: rooms are separate stores and an unscoped call never covers them.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMost entries per page (default: 20). Newest first. ⚠️ A CEILING, not a promise: the page is ALSO bounded by size, so a page of long entries stops early and returns a cursor for the rest. In rooms whose entries run long, ask for 5–10 — a large `limit` there buys nothing the size budget will not take back, and costs round trips.
sinceNoOnly entries created at/after this ISO-8601 instant (naive = UTC) — your novelty watermark.
untilNoOnly entries created at/before this ISO-8601 instant (inclusive). Pair with `since` to read a closed window — 'what happened on Monday' — instead of paging back from now.
cursorNoOpaque cursor from a previous page's 'More older entries exist' line — continues the listing without skips or duplicates.
domainNoRestrict to one domain. REQUIRED to read a shared room — pass its address ('xroom:room_01ABC'), because rooms are separate stores that an unscoped feed does NOT cover. Omit only when you mean your own domains. Room addresses come from memory_list_rooms. Room entries are often long — a room feed usually reaches its size budget after a handful of them, so expect to page (see `limit`).
exclude_authorNoDrop entries written by this author PRINCIPAL. ⚠️ NOT USABLE FROM HERE YET — the principal is never shown in these results, so there is no value you can get through this tool; a guess like 'me' filters nothing, silently. Same caveat as on memory_read.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
itemsYesEntries newest-first (creation time descending).
next_cursorNoPass back as cursor for the next (older) page; null = listing complete. Absent when the service sent a continuation token this client will not pass on; the text then says the token could not be displayed.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • removedInput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
    • removedOutput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
  2. Changed13 schema fields changed
    • removedInput schema / additionalProperties
      Removed value: -false
    • changedInput schema / properties / cursor / description
      Previous value: -"Opaque cursor from the previous page's next_cursor — continues the listing without skips or duplicates."New value: +"Opaque cursor from a previous page's 'More older entries exist' line — continues the listing without skips or duplicates."
    • changedInput schema / properties / domain / description
      Previous value: -"Restrict to one namespace (e.g. a shared room address 'xroom:...'); omit for all."New value: +"Restrict to one domain. REQUIRED to read a shared room — pass its address ('xroom:room_01ABC'), because rooms are separate stores that an unscoped feed does NOT cover. Omit only when you mean your own domains. Room addresses come from memory_list_rooms. Room entries are often long — a room feed usually reaches its size budget after a handful of them, so expect to page (see `limit`)."
    • removedInput schema / properties / domain / maxLength
      Removed value: -100
    • changedInput schema / properties / exclude_author / description
      Previous value: -"Drop entries written by this author PRINCIPAL — the 'everyone but me' read in a shared room. Same parameter memory_read takes."New value: +"Drop entries written by this author PRINCIPAL. ⚠️ NOT USABLE FROM HERE YET — the principal is never shown in these results, so there is no value you can get through this tool; a guess like 'me' filters nothing, silently. Same caveat as on memory_read."
    • changedInput schema / properties / limit / description
      Previous value: -"Page size (default: 20). Newest first."New value: +"Most entries per page (default: 20). Newest first. ⚠️ A CEILING, not a promise: the page is ALSO bounded by size, so a page of long entries stops early and returns a cursor for the rest. In rooms whose entries run long, ask for 5–10 — a large `limit` there buys nothing the size budget will not take back, and costs round trips."
    • removedInput schema / properties / since / maxLength
      Removed value: -40
    • changedInput schema / properties / until / description
      Previous value: -"Only entries created at/before this ISO-8601 instant (inclusive). Pair with `since` to read a closed window — 'what happened on Monday' — instead of paging back from now and discarding."New value: +"Only entries created at/before this ISO-8601 instant (inclusive). Pair with `since` to read a closed window — 'what happened on Monday' — instead of paging back from now."
    • removedInput schema / properties / until / maxLength
      Removed value: -40
    • removedOutput schema / properties / items / items / properties / memory_id / format
      Removed value: -"uuid"
    • removedOutput schema / properties / items / items / properties / memory_id / pattern
      Removed value: -"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$"
    • changedOutput schema / properties / next_cursor / description
      Previous value: -"Pass back as cursor for the next (older) page; null = listing complete."New value: +"Pass back as cursor for the next (older) page; null = listing complete. Absent when the service sent a continuation token this client will not pass on; the text then says the token could not be displayed."
    • changedOutput schema / required
      Previous value: -[
-  "items",
-  "next_cursor"
-]New value: +[
+  "items"
+]
  3. First observed

TDQS

A4.8/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), and the description adds substantial context beyond them: completeness within a scope vs. semantic search gaps, size-bounded pages that return fewer than `limit` with a cursor, rooms being separate stores an unscoped call never covers, and the fact that `exclude_author` is currently unusable. This is unusually rich behavioral disclosure.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the core contrast before operational detail, and nearly every sentence carries information. It is somewhat long, and the size-budget/ceiling explanation is restated in the parenthetical about `limit`, so there is minor redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, return shape need not be explained, and the description still covers paging, scope completeness, room scoping, and the unusable parameter. Nothing an agent needs to invoke this correctly within a room vs. personal scope is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the per-parameter descriptions are already exhaustive, so the baseline is 3; the prose adds cross-parameter semantics the schema cannot easily convey (domain as the mandatory room address, since as a novelty watermark, limit as a ceiling rather than a promise, cursor as the continuation mechanism). Some of this duplicates the `limit` and `domain` schema text, keeping it below 5.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource with explicit scope: 'List the NEWEST memories first — no search query needed,' and immediately contrasts itself against the semantic-search sibling ('Semantic search answers what do I know about X; this answers what happened lately'). An agent can distinguish this from memory_read/memory_list_rooms without opening a schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives concrete triggering scenarios (resuming work after a break, catching up on a shared room, reviewing recent saves) and an explicit negative case routing semantic questions elsewhere. It also states the hard requirement for room catch-up ('you MUST pass its address as domain'), which is exactly the when-to-use guidance an agent needs.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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