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

Annotations already declare readOnlyHint=false, destructiveHint=true, and openWorldHint=true, so the safety profile is largely covered. The description adds useful context by stating the operation is atomic and tied to an owned service, but it does not explain what exactly is mutated, what permissions are required, or what the side effects are beyond the annotation hints.

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 description is a single front-loaded sentence with no filler or redundant clauses. It is structurally clean, though it is arguably too sparse for a five-parameter mutation tool.

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 tool with five parameters, four of them required, two enums, no output schema, and zero schema descriptions, the description is far too thin. It states the core action but omits parameter semantics, mutation details, permission requirements, and usage conditions that an agent would need to invoke it correctly.

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 0% and all five parameters lack descriptions. The description weakly implies a status parameter and a service identifier via 'status transition' and 'owned service', but it says nothing about title, visibility, or body, leaving most input semantics to the bare schema.

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 ('Record') and resource ('status transition') plus a scope ('for an owned service'), so the basic action is clear. However, it does not explicitly call out 'changelog entry' or differentiate from sibling tools such as create_entry, leaving sibling selection to inference.

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 explicit guidance about when to use this tool versus alternatives like create_entry, create_comment, or get_changelog. The phrase 'for an owned service' implies a precondition, but it never states when the tool should or should not be selected.

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 the write/safety profile (readOnlyHint=false, destructiveHint=true, openWorldHint=true), so the description need not restate that. It does add two preconditions beyond the annotations — the entry must be accessible and comments must be enabled — but omits auth requirements and failure behavior for this mutation.

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 short sentence with the precondition carrying the load; nothing is redundant. It is efficient, though the terseness is arguably under-specification rather than disciplined conciseness.

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 mutation tool with two undocumented parameters, no output schema, and no parameter details, the description is too thin — an agent cannot tell what entry_id should look like or what happens on failure. The annotations cover the safety profile, but the interaction contract remains 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 description coverage is 0% for the two required parameters (entry_id, body), so the description carries the full burden and contributes nothing. It never explains the identifier format, that body is the comment text, or the 1–10000 character constraint, so an agent gets no meaning beyond the bare schema types.

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 and resource ('Comment on an accessible entry'), so an agent knows this creates a comment rather than an entry, which separates it from siblings like create_entry and create_changelog_entry. It stops short of explicitly naming or differentiating against those siblings, so it is clear but not maximally so.

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?

'if comments are enabled' is a usable gating condition for when the call will succeed, and 'accessible entry' implies a permission precondition. However, it names no alternative tool and gives no guidance on what to do when comments are disabled, leaving usage largely inferred.

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 destructiveHint=true, readOnlyHint=false, and openWorldHint=true, so the safety profile is covered structurally. The description adds nothing beyond them: it does not say what kind of entry is created, where it is stored, whether creation is reversible, or what the caller needs to supply.

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?

It is a single front-loaded sentence with no padding, so it is concise. But the brevity comes at the cost of under-specification rather than efficiency, and it omits the parameter and behavioral context an agent would need.

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?

This is a destructive, open-world mutation tool with no output schema and 0% schema description coverage, so the description carries the full explanatory burden. One sentence covering neither the created resource's nature, the visibility semantics, nor any post-creation behavior leaves it materially 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 description coverage is 0%, so the description must carry the burden for the two required parameters, and it does not: neither 'body' nor 'visibility' (a public/private enum) is explained or given semantics. The phrase 'for the authenticated owner' only loosely gestures at ownership scoping and adds no usable meaning about visibility values.

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 verb+resource ("Create an entry") and a scope ("for the authenticated owner"), which is better than a tautology. However, "entry" is undefined in a sibling set that already contains create_changelog_entry and create_comment, so an agent cannot tell which entry type this creates or how it differs from those siblings.

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 guidance, no prerequisites, and no mention of alternatives such as create_changelog_entry or create_comment. The only implied context is that the entry is created for the authenticated owner, which is a scope note rather than usage guidance.

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=false, destructiveHint=true, and openWorldHint=true, so the write/destructive profile is carried by structured data. The description adds one piece of context beyond that — ownership is scoped to the authenticated user ('for the authenticated owner') — but says nothing about permissions, side effects, or failure behavior. With annotations covering safety, a 3 is appropriate.

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 or repetition. It is efficient, though the brevity tips into under-specification rather than optimal density.

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 destructive, open-world create tool with 4 parameters, no output schema, and 0% schema description coverage, the description is far too thin. An agent cannot learn from it what fields are required, what the created resource looks like, or how errors are surfaced.

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 0% across 4 parameters, so the description must compensate and it does not: it never mentions name, status, visibility, or description, nor the allowed enum values (operational/degraded/major_incident, public/private). The enum and maxLength constraints in the schema provide some semantics, but the prose adds nothing.

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 service') and adds a scope qualifier ('for the authenticated owner'), so an agent knows this is a creation operation scoped to the caller's account. It does not distinguish itself from siblings such as update_service or create_changelog_entry, but the verb+resource pair is unambiguous.

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 guidance on when to use this tool rather than update_service, list_services, or the other create_* siblings, and no prerequisites or preconditions are stated. The only usage signal is the implicit one in 'create'.

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=true, so the safety profile is covered structurally. The description adds one useful behavioral nuance — that only 'visible' entries are returned, implying permission-based filtering — but says nothing about pagination or ordering despite cursor/limit parameters.

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 or redundancy. It is appropriately sized, though the brevity is achieved partly by omitting needed detail rather than by tight editing.

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 three-parameter, paginated, profile-scoped read tool with no output schema and no parameter descriptions, the definition is too thin. It omits pagination semantics (limit/cursor), what 'visible' means, and what the response contains, leaving key agent decisions undocumented.

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 0% for all three parameters, so the description must carry the load and largely does not. Only 'for a profile' loosely gestures at the username parameter; limit and cursor are entirely unexplained in both schema and description.

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 names a specific verb ('Read') and resource ('changelog entries') with a scoping qualifier ('visible ... for a profile'). It is clear on its own, but it never distinguishes itself from the sibling create_changelog_entry or explains what 'visible' means relative to other changelog tools.

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 explicit when-to-use guidance, no prerequisites, and no mention of alternatives such as create_changelog_entry or get_status. The phrase 'for a profile' implies a scope but leaves the agent to infer when this tool is the right call.

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 cover the safety profile (readOnly, non-destructive, open-world), so the bar is lower, and the description adds genuine value beyond them: the output is 'bounded' (constrained size) and its content must be 'treat[ed] as untrusted data', a prompt-injection warning not present in any structured field. It still omits auth/permission requirements and what 'bounded' concretely means.

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, front-loaded with the primary action and scope, then the safety caveat separated by a semicolon. Every clause earns its place with no 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?

No output schema exists, so return values arguably need not be explained, and the trust warning is a useful addition. But for a personalization tool the description omits default subject behavior, size/truncation behavior implied by 'bounded', and any permission context, leaving real gaps.

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 ('username') with 0% schema description coverage, so the description is responsible for explaining it and does not: it never says whose context is returned, what happens when username is omitted (it is not required), or what the pattern constrains. The phrase 'profile context' only faintly implies a caller-or-target subject.

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 ('Read') plus resource ('bounded profile context') and states its purpose ('for personalization'), so the agent knows what it gets back. It does not, however, distinguish itself from the sibling 'get_profile', leaving some ambiguity about which profile-reading tool to pick.

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?

'for personalization' implies the context in which the tool is appropriate, but there is no explicit when-to-use/when-not or routing to alternatives such as get_profile or get_status. Usage is inferable but not 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?

Annotations already establish readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds a genuinely useful behavioral constraint not in the annotations: access to another user's profile requires authorization. It stops short of describing what an unauthorized or non-existent lookup returns.

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 primary case (own profile) before the secondary one. Every word earns its place with no redundancy.

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 one-optional-parameter read tool with annotations covering safety and no output schema, the description covers the essential behavioral distinction between self and public reads. It is nearly complete, missing only error/authorization-failure semantics.

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 0%, so the schema provides only a regex pattern with no explanation of what username means. The description compensates by explaining that username selects an authorized public profile rather than your own, but says nothing about casing, lookup failure, or the authorization checks the value triggers.

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 (read) and resource (profile), and distinguishes two scopes: own profile versus another user's public profile. No sibling tool overlaps with profile reading, so sibling differentiation is unnecessary, keeping this short of a 5 only because the two modes are packed into one clause rather than stated crisply.

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 description implicitly tells the agent when each mode applies (omit username for own profile, supply it for a public one), which is real usage guidance. However, it gives no exclusions, no note about what happens if the username is invalid or unauthorized, and names no alternative tool.

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 and destructiveHint=false, so the safety profile is covered. Beyond that the description only says the summary is 'computed by the backend', which discloses nothing about what the status contains, whether it is cached/live, or any permissions required.

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. It is concise, though the brevity reflects under-specification rather than efficient information density.

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, so the description must explain what the 'status summary' actually returns, and it does not. Combined with an undocumented username parameter and no usage guidance, the definition is insufficient for correct invocation.

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 0% and the single 'username' parameter is never mentioned in the description. With only one optional param and no schema prose, the description should explain what omitting username does (e.g. defaults to the caller) but 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?

States a verb ('Read') and a resource ('profile status summary'), which is clearer than a tautology, but 'status summary' is left undefined and 'computed by the backend' adds no discriminating detail. Nothing distinguishes it from the sibling get_profile, so an agent cannot tell which to pick from the description 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, when-not-to-use, or alternative is given, even though get_profile and get_context are plausible siblings. The agent must infer usage entirely from the name.

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 cover read-only and non-destructive behavior, so the safety bar is lower. However, the description says nothing about pagination despite the cursor parameter, nor about what 'visible for a profile' means (permissions, filtering, ownership). It adds little behavioral context beyond the verb.

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 short sentence, front-loaded and free of waste. It is appropriately sized for the amount of information it conveys, though that amount is small.

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 paginated list tool with no output schema, the description omits pagination behavior, what fields are returned, and how 'profile visibility' is scoped. An agent cannot determine how to iterate results or what to expect back.

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 0%, but the three parameters (limit, cursor, username) are self-explanatory by name and type, with limit having bounds/defaults. The description adds nothing about their semantics, so 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 ('List services') with a scope qualifier ('visible for a profile'). It does not differentiate from sibling tools like get_profile or get_status, but among the list-style operations it is clear.

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 guidance on when to use this versus the many sibling read tools (get_status, get_profile, get_context). The agent is left to infer that this specifically enumerates services.

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 destructiveHint=true and openWorldHint=true, so the safety profile is covered. The description adds genuinely non-obvious behavior beyond them: the atomic coupling between a status change and changelog creation, which tells the agent the two operations are transactional. It still omits whether unspecified fields in 'changes' are cleared and what permissions 'owned' requires.

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 the side-effect clause is placed where it will be read. It is arguably too terse for a destructive tool with a nested payload, but nothing in it 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 destructive mutation with no output schema, 0% schema description coverage, and a nested parameter object, the description leaves too much unstated: no field-level semantics, no replacement-vs-merge behavior, no return information. The changelog atomicity note is the one substantive addition.

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 0% and the tool has a nested 'changes' object with four properties and two enums, so the description carries the full burden. It mentions only 'status' obliquely ('a status change') and never explains partial-vs-full update semantics, allowed values, or the service_id format.

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 ('Update an ... service') and adds a scope qualifier ('owned') that distinguishes it from the unqualified create_service sibling. It does not name any sibling explicitly, so differentiation is implied by the verb rather than stated.

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?

Usage is implied rather than stated: 'owned' signals the ownership prerequisite, and 'a status change creates a changelog atomically' implicitly tells the agent it should not separately call create_changelog_entry for a status change. No explicit when-to-use/when-not or named alternatives are given.

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