concordance

shelf_drop

[KEEP · internal] Step 2 — stock the shelf. Send the fields from shelf_signable plus a detached signature over those bytes; the private key never travels. Your words stay at the member tier forever: promotion to the commons carries them further, it does not make them the library's claim. display_name is the ONLY profile field there is.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "fields": "<fields>",
      "signature": "<signature>"
    },
    "name": "shelf_drop"
  }
}

Input Schema

Name	Required	Description	Default
`fields`	Yes
`signature`	Yes
`display_name`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedAug 4, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```
- addedInput schema / properties / display_name / maxLength
```
Added value: +4000
```
- addedInput schema / properties / fields / additionalProperties
```
Added value: +false
```
- addedInput schema / properties / signature / maxLength
```
Added value: +4000
```
AddedJul 30, 2026

TDQS

A3.7/5.0

Behavior3/5

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

With no annotations, the description carries full burden and does disclose useful traits: the private key never travels, and words remain at the `member` tier permanently even if promoted to the commons. However, it says nothing about the write's return, idempotency, or error behavior, leaving operational semantics uncovered.

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?

It is front-loaded with the step label and the core instruction, then appends ownership policy. Most sentences earn their place, though the tier/commons sentence is dense and slightly tangential to invocation.

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?

For an internal tool with a nested object param, no annotations, and no output schema, the description links the workflow and identifies parameters but omits what a successful drop returns or how failures surface. Adequate but with a clear gap for a write operation.

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 0%, so the description must compensate, and it addresses all three parameters: `fields` sourced from shelf_signable, `signature` as a detached signature "over those bytes," and `display_name` as "the ONLY profile field there is." It adds meaning and constraints but not encoding/format detail.

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

Purpose4/5

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

"Step 2 — stock the shelf" plus "send the fields from shelf_signable plus a detached signature over those bytes" conveys a concrete submit-signed-data action and explicitly links it as the follow-on to shelf_signable step 1. The metaphor "stock the shelf" is less plain than a literal verb, but the sibling differentiation from shelf_signable/shelf_read is clear.

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?

The description tells the agent exactly when to invoke it: after producing the signature, sending "the fields from shelf_signable plus a detached signature over those bytes." That is a clear workflow precondition, though it never states when NOT to use it or names an alternative path.

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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