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

Annotations declare destructiveHint=true, so the agent needs to know that existing values are overwritten and are not recoverable — the description never says this and 'Only the fields you pass are changed' can be read as reassuring. Nothing is said about what happens on a bad id or whether the edit is reversible. The trailing Bardiyah sentence consumes space without adding behavioral context.

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?

The first two sentences are tight and front-loaded with the key partial-update rule. The third sentence about new locations and country lists is irrelevant to this tool and creates noise an agent has to discard.

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 should carry return/error behavior, and it does not — no mention of validation failures, backup_location name-matching behavior, or confirmation of what changed. It does cover the permission precondition and the partial-update semantics, which are the two most important facts, so it is adequate but incomplete.

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 schema already documents all nine parameters, making 3 the baseline. The description only mentions the four note-style fields (timing, parking, safety, sound) and omits location_name, location_type, map_link and backup_location, so it slightly under-represents the editable surface rather than adding meaning.

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 ('Update a filming location') and adds a scope qualifier ('the signed-in user can edit') along with which kinds of content are typically refined. It is clearly distinguishable from get-filming-location and list-filming-locations, though it doesn't name a sibling explicitly.

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?

'Only the fields you pass are changed' gives useful partial-update guidance, and 'the signed-in user can edit' implies a permission precondition. However there is no explicit when-to-use vs. alternatives, and the closing sentence about new locations in Bardiyah describes a creation scenario this tool does not perform, which muddies rather than guides.

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