I'm In! Sign-up Sheets

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

With annotations covering readOnly/openWorld/idempotent/destructive, the description still adds real behavioral context: the tool emails a private manage and claim link to owner_email, returns a shareable URL, and enforces one sheet per owner email per day. It does not explain what the destructiveHint implies (e.g. whether sheets can be revoked), which is the one remaining gap.

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

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

Three compact sentences, front-loaded with the action before the side effects and the rate limit. Slight redundancy in restating owner_email's role, but nothing is wasted.

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

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

For a six-parameter creation tool with no output schema, the description helpfully declares what comes back (shareable URL) and the out-of-band email side effect, plus the daily quota. It is nearly complete, lacking only the consequences of the destructive annotation.

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

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

Schema coverage is 100%, so the baseline is 3. The description adds a meaningful constraint the schema does not: owner_email is 'the user's own address', framing the manage link as going to yourself rather than an arbitrary recipient, and it names the core composing inputs (title, slots, tz).

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

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

States a specific verb and resource ('Create a live sign-up sheet') plus the source inputs and the target platform, so the action is unambiguous. It does not distinguish itself from the siblings draft_sheet_link or list_templates, leaving the routing decision to the agent.

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

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

There is no when-to-use or when-not-to-use guidance and no mention of the sibling tools that would be natural alternatives (e.g. draft_sheet_link for a preview). The only constraint given, the daily per-owner limit, is a rate rule rather than usage direction.

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

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

Annotations declare readOnly and non-destructive, and the description reinforces this with 'Creates nothing,' while adding information annotations do not carry: no account is required, and the draft itself is produced later by the user pressing 'Make my draft' in the browser. It stops short of saying whether the link expires or is single-use.

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

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

Front-loaded with the core action before the downstream behavior and the safety note. The parenthetical inventory of everything the sheet will contain is a bit long for a tool that does not build the sheet itself, but it does usefully set user expectations and no sentence is pure filler.

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

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

With no output schema, the description correctly explains the return value (a link) and what happens when it is opened. For a one-parameter, read-only tool this covers the essentials; only minor operational details (link validity, whether the words are URL-encoded) are left unstated.

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

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

Schema coverage is 100% for the single 'words' parameter, so the baseline is 3; the description goes slightly beyond by enumerating acceptable sources (email, notes, flyer text, event description), which helps the agent decide what text to pass. It doesn't add format or length guidance beyond that.

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

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

States a concrete verb and output: 'Turn the user's ... words into a link that opens im-in.events' with those words pre-filled. The phrase 'Creates nothing and needs no account' implicitly separates it from create_signup_sheet, but the sibling is never named, so the differentiation is inferred rather than explicit.

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

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

Gives clear context for use: whenever the user supplies an email, notes, flyer text or event description, this is the entry point. It also signals the tool is a precursor step ('Pressing Make my draft there builds the whole sign-up sheet'), but it never states when to prefer it over create_signup_sheet or list_templates.

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

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered. The description's only added behavioral detail is 'with their prefilled slots,' which hints at returned content but says nothing about pagination, filtering, or limits.

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

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

A single sentence that front-loads the verb and resource and closes with the most informative detail (prefilled slots). No wasted words.

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

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

With no input params, no output schema, and annotations covering the safety profile, the description says enough to call the tool correctly and know roughly what comes back. Only the absence of any result-size or pagination hint keeps it short of a 5.

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

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

The tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for a param-free tool is 4. No parameter guidance is needed.

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

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

States a specific verb (list) and resource (sign-up sheet templates), with concrete domain examples (potluck, meal train, volunteer shifts) that pin down what a template is. Siblings create_signup_sheet and draft_sheet_link are obviously different operations, so differentiation is implicit rather than spelled out.

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

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

The listing verb implies the use case (browse available templates before creating a sheet), but the description never states when to call this versus the sibling create/draft tools or any prerequisite. Usage is inferable, not stated.

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