Draft a starter /llms.txt file from a website homepage, including a title, summary, and links to key pages, to help AI answer engines understand and cite the site.
Draft a starter /llms.txt for a website from its homepage: title, summary and links to key pages.
| Name | Required | Description | Default |
|---|---|---|---|
| url | Yes | Site URL or domain |
Changes observed during successful MCP inspections.
v0.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations at all, the description carries the full behavioral burden and falls short. It does not say whether the tool fetches the live homepage over the network, whether it writes a file anywhere or only returns text, whether authentication or rate limits apply, or how the 'key pages' are selected. For a generative/scraping operation these are material unknowns.
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 front-loaded sentence that names the artifact first and then its expected contents. Every clause carries information; nothing is padding.
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?
There is no output schema and no annotations, so the description should clarify what comes back (raw markdown text? a file path? a preview?) and how the page list is derived. It is minimally adequate for a one-parameter tool but leaves the return contract 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?
Only one parameter and schema coverage is 100%, so the schema already documents 'url' as 'Site URL or domain'. The description adds the useful clarification that the input is treated as a homepage (root) rather than an arbitrary page, but nothing on URL format, trailing paths, or redirect handling.
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?
Specific verb ('Draft') plus a specific artifact ('/llms.txt') and its source ('from its homepage'), with the produced contents enumerated (title, summary, links to key pages). It does not reference the sibling check_site, so an agent gets no explicit signal about how this differs from that tool.
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 word 'starter' implies this produces a scaffold to be refined rather than a finished file, which is mild usage context. There is no when-to-use/when-not phrasing, no prerequisites, and no mention of the alternative check_site, leaving routing entirely to inference.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.