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

No annotations are provided, so the description carries the full behavioral burden. It conveys only that this is a retrieval, but says nothing about read-only safety, ordering of 'newest', behavior for an unknown feed_id, or whether results are cached/bounded. For a tool with zero annotation coverage this is thin.

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 with no filler and no redundancy. It is appropriately sized for a two-parameter read tool, though its brevity is partly the source of the gaps noted elsewhere.

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 simple 2-parameter tool with a fully documented schema and no output schema, the description is minimally adequate. It omits sibling differentiation (rss_latest overlap) and any note on ordering or failure behavior, but nothing structurally critical is missing.

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 description coverage is 100%, with limit (range, default) and feed_id (format example) fully documented in the schema. The description adds no parameter meaning beyond that, so the baseline of 3 applies.

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+resource ('Get the newest articles from one specific RSS feed'), which is clear on its own. However, it does nothing to differentiate from the sibling rss_latest, which by name appears to cover a very similar retrieval of recent articles, so an agent cannot reliably choose between them from this text alone.

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?

No when-to-use guidance, no when-not-to-use, and no mention of rss_list or rss_latest as alternatives. The only implied context is that a feed_id must come from somewhere (schema hints at rss_list), leaving routing purely to inference.

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?

With no annotations, the description carries the full burden. 'Get' plus 'newest first' communicates a read-only, sorted retrieval, and the scope ('all configured feeds') is useful. However, it says nothing about pagination, how many feeds must be configured, or what happens when no feeds match a category.

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?

One compact sentence with the scope, ordering, and optional filter front-loaded and no filler. Every clause earns its place.

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 simple read-only list tool with full schema coverage and zero required params, the description is adequate: scope, ordering, and filtering are clear. With no output schema, a note on the returned article fields would close the remaining gap.

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 description coverage is 100%, so the schema already documents limit (1-50, default 15) and category (with the rss_list pointer). The description adds only the notion of ordering and optionality, which the schema largely covers; baseline 3 is appropriate.

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 ('Get the newest articles across all configured RSS feeds') plus the ordering (most recent first). It distinguishes itself from rss_feed only implicitly via 'across all configured feeds'; it never names the sibling that returns a single feed's items.

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 phrase 'optionally limited to one category' hints at a filtering use case, and the category param points at rss_list for discovering values, but there is no explicit when-to-use-this-vs-rss_feed guidance. Usage is implied by the aggregation scope rather than stated.

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?

No annotations are provided, so the description carries the full burden. It usefully discloses output behavior (grouped by category, includes feed_id), which matters since there is no output schema, but says nothing about read-only nature, auth requirements, or whether the feed list can be empty.

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 compact sentence with zero waste, front-loading the action and the result, then ending with the actionable feed_id handoff.

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 trivial parameterless list tool with no output schema, the description covers enough: what is returned, how it is grouped, and the key field (feed_id) for the next step. Minor gaps on empty-list/error behavior only.

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 no parameter semantics to describe; baseline 4 applies. The description correctly adds no spurious parameter guidance.

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 (configured RSS feeds) and explicitly names the sibling used next (rss_feed) via the returned feed_id. An agent can distinguish this from rss_latest and rss_feed without opening any schema.

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?

Clear implied context: call this to discover feeds and obtain the feed_id needed by rss_feed. It does not state when-not to use it or contrast with rss_latest, but the routing intent is explicit.

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