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Arroway

Read Arroway

arroway_read
Read-onlyIdempotent

Read Arroway for a project BEFORE acting on any task related to it. It serves the authored essence of memories, dated-log entries and handoffs by default; name a #handle in include to recover that object's full body.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sinceNoOptional: the session checkpoint printed at the end of a previous read of THIS project. Presenting it lets the standing rules be referenced instead of reprinted, freeing that space for the task. Omit it — or present one this connection does not hold — and they are written out in full; the server decides, never your local state. If your context was compacted or this is a new conversation, omit it.
handoffNoOptional: the #handle of an OPEN handoff you are continuing. The read is then built from that handoff's reading list (the read_handles its author named): the standing rules in full, the handoff and every reference it names in full, and nothing ranked — much smaller than a normal read, and it counts as a delivered read. A handoff with no reading list falls back to the normal read, and says so. Cannot be combined with include; `since` is ignored. If a reference on the list is no longer available, the read is refused rather than served incomplete — read normally instead.
includeNo#handles of memories, dated-log entries or handoffs whose full body you need. They are placed first and cannot be dropped by the budget — so other memories fall out instead: this chooses what you get, it does not get you more.
projectYesProject slug, e.g. 'seven50'
task_contextNoOptional: what you are about to do. It ranks what comes back, but the declaration alone is NOT evidence that a memory was used. A matching completion residue from the same session must corroborate it before Arroway updates the memory's observed-use signal.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4.3/5.0
Behavior4/5

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

Annotations already provide readOnlyHint, idempotentHint, and destructiveHint, so safety is covered. The description adds behavioral detail: include places handles first and cannot be dropped by budget, handoff builds a smaller read, and since's checkpoint behavior is noted. It does not describe the return format, which is a gap given no output schema, but the added context is valuable and consistent with annotations.

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

Conciseness5/5

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

The description is two sentences with no fluff. It front-loads the primary purpose and then provides a compact conditional for full-body recovery. Every clause contributes to understanding, and the structure is efficient.

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

Completeness3/5

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

The description covers the main use cases (default read, include, handoff, since) but omits what the return payload looks like. With no output schema, the agent cannot predict the structure of the response, which is a significant gap for a read tool. It also doesn't define 'Arroway' or the concept of 'authored essence', though these may be assumed from the tool family.

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 description coverage is 100%, so each parameter is already documented. The description adds meaning beyond the schema by explaining the budget implications of include and the special behavior of handoff, which are not fully conveyed in the parameter descriptions. This supplements the schema without redundancy.

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?

The description clearly states the tool reads Arroway for a project, specifying the verb 'read' and the resource 'Arroway'. It also distinguishes the default behavior (serving authored essence) from the include option to recover full bodies, and the 'BEFORE acting' instruction sets it apart from sibling tools that perform actions.

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

Usage Guidelines4/5

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

It explicitly says to use this tool before acting on any task related to a project, which is a strong when-to-use cue. It also explains how to request full bodies via include and how to continue a handoff, but it does not explicitly mention alternatives like arroway_search_log for searching, leaving some room for interpretation.

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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