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kristianedlund

hardcover-mcp

add_journal_entry

Add a note or quote to a book's reading journal. Specify book ID, entry text, and event type to log your thoughts.

Instructions

Create a reading journal entry (for example a note or quote) for a book.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
book_idYesHardcover book ID.
entryYesJournal entry text.
eventYesJournal event type.
edition_idNoOptional Hardcover edition ID.
privacy_setting_idNoOptional privacy setting ID (1 public, 2 followers, 3 private).
Behavior2/5

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

No annotations exist, so the description must cover behavioral traits. It only states 'create' without detailing side effects, permissions, or limitations. The return value is not mentioned, and there is no output schema to compensate.

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?

Single sentence, front-loaded with key action and resource, no extra words. Efficiently conveys the purpose.

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

Completeness2/5

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

Given the tool has 5 parameters and no output schema, the description is too sparse. It does not explain what happens on success, potential errors, or how the entry integrates with other journal features. Sibling tools for delete and get exist but no guidance on workflow.

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

Parameters3/5

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

Schema description coverage is 100%, so the description adds minimal value beyond the schema. The mention of 'note or quote' repeats the enum. Baseline 3 is appropriate as schema already explains parameters.

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 action ('create') and the resource ('reading journal entry'), with concrete examples ('note or quote') that align with the event enum. It distinguishes the tool from siblings like delete_journal_entry and get_reading_journal.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives, no prerequisites or context provided. The sibling tools are listed but not differentiated.

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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