list_catalog_providers

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

The annotations already declare readOnlyHint and openWorldHint, so safety is partly covered, but the description adds real behavioral context: the result set is account-specific, auth-gated on entitlement, and dynamic. That entitlement/authorization disclosure is exactly the kind of value structured fields cannot carry.

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?

Two well front-loaded sentences with no wasted clauses; the purpose leads and the usage guidance follows. The trailing stray artifact "[#f0ed53]" is noise that should not be in the text.

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 zero-required-param read tool with no output schema, this covers purpose, usage, and the key dynamic/entitlement behavior an agent needs. The only real gap is the undocumented `workspace` parameter and any hint about result shape or pagination.

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?

There is one parameter (`workspace`) with 0% schema description coverage, and the description never mentions it — not whether it scopes the listing, whether it is required, or what the default is. With schema coverage this low, the description was supposed to compensate and does not.

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?

The description gives a specific verb+resource with scope: "List the fulfillment providers this account can browse catalogs from." It is clear what the tool returns, but it never distinguishes itself from the sibling `list_connectable_providers`, which an agent could easily confuse with this one.

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?

It explicitly tells the agent when to use it (to discover valid `provider` values for browse_catalog / get_garment_details) and adds a strong caution not to assume a fixed list. It stops short of naming when-not to use it vs. the similarly named `list_connectable_providers`.

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