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

No annotations are provided, so the description carries the full behavioral-disclosure burden. It names the actions but does not explain their effects, safety implications, prerequisites, whether they mutate drive state, or what happens on enable/disable/quick_stop/fault_reset.

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 waste. The parenthetical action list is compact and directly supports the tool's purpose.

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 annotations and no output schema, the description should explain safety, state changes, and action-specific parameter behavior. It does not address whether target is required for motion actions, how fault_reset interacts with reset_error, or what a caller should expect after each action.

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%, including descriptions for action, target, and slaveIndex, so the baseline is 3. The description only repeats the action enum and adds no additional meaning about target units, action-specific target requirements, or the slaveIndex default.

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 clearly states that this is a CiA 402 servo drive motion-control tool and enumerates its six actions. The verb+resource are clear, but it does not distinguish itself from siblings such as reset_error, write_sdo, or set_esm_state.

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 lists available actions but gives no guidance on when to use this tool versus alternatives. In particular, it does not clarify how fault_reset differs from the sibling reset_error or when to prefer drive_control over ESM/SDO operations.

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 behavioral burden. Listing the concrete metrics is useful context and 'Get' implies a non-mutating read, but it doesn't say whether the call samples live data, takes a snapshot over time, could affect bus traffic, or requires specific permissions — meaningful gaps for a fieldbus diagnostic read.

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 leads with the verb and resource, then packs the metric list with zero 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?

No output schema and no annotations exist, but the description enumerates the returned metrics, which substantially compensates for the missing return-value documentation. It is nearly complete for a zero-parameter read; only live-vs-snapshot behavior and any bus-load caveats are absent.

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 the baseline is 4; there is no parameter meaning the description needs to supplement, and the schema is trivially complete.

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 ('Get') and resource ('EtherCAT bus diagnostic metrics') and enumerates the exact metrics returned, so the agent knows precisely what it retrieves. It does not explicitly contrast itself with siblings like get_slave_info or get_topology, but the resource scope is distinctive enough to avoid confusion.

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 only implied — an agent can infer this is for monitoring/troubleshooting bus health, but the description never states when to call it versus get_esm_state, get_slave_info, or reset_error. No prerequisites, exclusions, or alternative routing are given.

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 at all, the description carries the full behavioral burden. 'Query' correctly signals a safe read, and listing the possible state values compensates for the missing output schema, but nothing is said about permissions, behavior on an out-of-range slaveIndex, or whether the call fails when the bus is down.

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; the enumerated state list earns its place because no output schema exists to convey return values.

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 query tool, the description plus schema cover what an agent needs to invoke it, and the state enumeration substitutes well for the absent output schema. Only error/failure conditions are left unaddressed.

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 baseline is 3. The description's 'for the bus or a specific slave' merely paraphrases what the schema's slaveIndex description already states, adding no new syntax or constraint detail.

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 ('Query') and resource ('EtherCAT State Machine state') and enumerates the five possible states, which pins down exactly what is returned. It implicitly contrasts with the mutating sibling set_esm_state through 'Query', but never names it explicitly, so it falls short of full sibling differentiation.

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 only implied: an agent can infer this is the read-side counterpart to set_esm_state, but the description never says when to reach for this versus get_diagnostics, get_slave_info, or scan_slaves. No exclusions or prerequisites are 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 must carry the behavioral burden. 'Get' implies a read-only operation and the description lists the kinds of data returned, but it does not explicitly confirm no side effects, permissions required, or response format.

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. Every element—detailed information, SDO object dictionary, PDO mappings, specific slave—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 one-parameter read tool with no output schema, the description does list the returned content categories. However, without annotations or an output schema, it does not describe the return structure or whether all categories are always present.

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%, and the schema already explains that slaveIndex is a 0-based bus index. The description adds no parameter-specific meaning beyond what the schema provides.

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 states a specific verb (Get) and resource (slave info, SDO object dictionary, PDO mappings) for a specific slave device. It implicitly distinguishes itself from read_sdo/read_pdo by describing dictionary and mapping retrieval, but it does not explicitly name or contrast 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?

The phrase 'for a specific slave device' implies when the tool is relevant, but there is no explicit guidance on when to use this versus read_sdo, read_pdo, scan_slaves, or get_diagnostics. Usage is inferred 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. 'Get' implies a side-effect-free read and the tool takes no parameters, which conveys a safe profile implicitly, but nothing is said about needing a live/connected bus, error behavior when the bus is down, or ordering/cost of the result.

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 verb and the resource with a clarifying parenthetical. 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?

For a no-param read tool with no annotations and no output schema, the parenthetical '(port-to-port connections)' gives the agent a reasonable idea of the returned structure. A brief note on whether output is per-slave port pairs or a flat link list 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?

The tool has zero parameters, so there is nothing for the description to disambiguate; baseline 4 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 ('Get') and a precise resource ('physical cable connection topology of the EtherCAT bus, port-to-port'). This is clearly distinct from siblings like get_slave_info or scan_slaves, though the description never names those siblings to make the contrast explicit.

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 statement of when to call this versus scan_slaves or get_slave_info, and no preconditions (e.g., bus must be in a certain state). The use case is only inferable from the word 'topology', which is not the same as 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?

No annotations are provided, so the description carries the full behavioral burden. It implies a read operation and lists data categories, but it does not state side effects, permissions, whether the read is non-destructive, or what the returned data looks like.

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 wasted words. It efficiently conveys the operation and the data categories involved.

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 tool with one fully documented optional parameter, the description covers the domain and data categories. However, with no annotations and no output schema, it omits return behavior and operational traits that would make the definition complete.

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 schema fully documents the single optional parameter, slaveIndex, including that omitting it reads all slaves. The description adds no parameter-specific meaning beyond the schema, 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?

The description states a specific verb and resource: 'Read cyclic process data' and scopes it to TxPDO inputs. It is clear what the tool does, though it does not explicitly contrast itself with sibling tools such as read_sdo or write_pdo.

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 versus alternatives. The description implies usage through the phrase 'cyclic process data (TxPDO inputs),' but it never names read_sdo, write_pdo, or any condition that would select one over another.

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 behavioral burden. It states that the operation is a read, but does not disclose return format, error behavior for invalid slave/index, communication side effects, or any safety/permission 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 description is a single front-loaded sentence with no filler. It immediately names the operation, protocol, resource, and key parameters.

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?

The description is adequate for selection and parameter identification, but with no output schema it does not explain what read_sdo returns or how errors are surfaced. For a read operation, that missing return-value context is a clear 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 index, subIndex, and slaveIndex. The description only repeats the index/subIndex examples and adds no meaning beyond the 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 uses a specific verb ('Read') and resource ('CANopen over EtherCAT (CoE) SDO object') and clarifies the required Index/SubIndex format. This clearly distinguishes it from the write_sdo sibling and lets an agent identify the operation without opening the 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?

Usage is implied by 'Read a ... SDO object by Index ... and SubIndex,' but the description does not explicitly say when to choose this over read_pdo, get_slave_info, or write_sdo. No prerequisites or exclusions are 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 exist, so the description carries the full behavioral burden, and it leaves key things unstated: whether the drive must be stopped before a fault reset, whether clearing alarms is recoverable, whether a bulk reset of all slaves is risky, and what the operation returns. It identifies the error classes cleared but not the operational consequences or prerequisites.

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 front-loaded sentence that names the action and the three fault domains it clears, with no filler. Nothing is buried or redundant.

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 no annotations and no output schema, the definition is only minimally sufficient. The parameter is covered by the schema, but safety prerequisites, scope of impact when resetting all slaves, and post-reset state are 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?

There is a single optional parameter with 100% schema description coverage, including the important 'if omitted, resets all slaves' behavior. The description itself adds nothing about slaveIndex, so the schema 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 ('reset') and enumerates exactly what is reset: slave AL errors, alarms, and CiA 402 drive fault reset. That is concrete enough to distinguish it from diagnostic or control siblings like get_diagnostics or drive_control, though it does not 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?

The fault categories imply when the tool applies (after an AL error, alarm, or CiA 402 fault), but there is no explicit when-to-use guidance, no preconditions, and no pointer to alternatives such as reading diagnostics first. Usage is inferred 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?

With no annotations, the description carries the full burden. It usefully discloses the payload shape (identity, current state, port links), which matters because there is no output schema, but it omits whether a bus scan is intrusive, how long it takes, or what happens to slave states during scanning.

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 front-loaded sentence: action first, returned fields second. No filler or repetition of the tool name.

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-arg tool with no annotations and no output schema, the description does cover the returned field categories, but it leaves out side effects/latency and any guidance on follow-up tools, which are the main remaining gaps an agent would care about.

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?

Zero parameters, so the schema baseline of 4 applies; nothing about parameters needs explaining and the description correctly makes no parameter claims.

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+resource (scan the EtherCAT bus, list slave devices) plus a statement of what is returned. It implicitly distinguishes itself from get_slave_info/get_topology by describing discovery of all connected slaves, but never names those siblings 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?

Usage is only implied: the word 'Scan' suggests a discovery step before targeted reads like get_slave_info or read_sdo. There is no explicit when-to-use, no condition for preferring get_topology, and no prerequisites (e.g., bus must be in a safe state).

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 behavioral burden. It says a transition is requested but does not disclose whether this mutates slave state, what happens to running motion, what permissions are required, or how failures are reported.

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 definition is a single front-loaded sentence with no wasted wording. The operation, valid states, and target scope are all presented efficiently.

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?

The tool is a potentially consequential ESM state-transition command with no annotations and no output schema. The description covers invocation basics but omits behavioral context such as prerequisites, side effects, and response expectations.

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 parameter semantics are already fully documented. The description reinforces the target-state enum and slave/all-slave scope, but does not add meaning beyond what the schema already provides.

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 states a specific verb and resource: requesting an EtherCAT State Machine transition, and enumerates the valid target states. It is clearly distinguishable from the sibling `get_esm_state` by describing a transition request rather than a state read.

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 gives no explicit guidance on when to use this tool versus alternatives such as `get_esm_state` or `reset_error`. It only implies that the tool is used to change ESM state, without naming exclusions or prerequisites.

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 and largely fails it. It does not state that writing RxPDO values immediately affects live device/motor behavior, whether values persist or are one-shot cyclic writes, what happens on an invalid key or non-operational slave, or any failure semantics for an industrial control 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 front-loaded sentence with no filler; the core action and resource come first and the examples follow compactly.

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 live-hardware mutation with nested untyped parameters, no annotations, and no output schema, the description is thin: it omits preconditions, safety implications, error behavior, and key naming for the values map. An agent could formulate the call but not predict its effects or failure modes.

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 baseline would be 3, but the description adds real meaning for the untyped `values` object (additionalProperties: {}) by naming the kinds of outputs it expects: digital outputs and motor target position/controlword. It does not explain how keys are formed (name vs index), which is the remaining gap.

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 ("Write") plus a specific resource ("cyclic output process data / RxPDO outputs"), with parenthetical examples of what that data covers (Digital Outputs, motor target position/controlword). This differentiates it from write_sdo and read_pdo by direction and data type, though no sibling is named 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?

No guidance on when to use this versus write_sdo or drive_control, and no stated preconditions (e.g., slave must be in Operational ESM state for RxPDO writes). The agent must infer the context entirely from the tool name and domain knowledge.

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, yet says nothing beyond the mutation itself: no statement about persistence after power cycle, SDO abort/error behavior, timeouts, required device state, or whether value size is dictated by the object dictionary entry. For a write tool on hardware this is a meaningful gap.

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 zero filler — the verb and resource lead. It carries no wasted text, though its brevity leaves the behavioral 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?

No output schema and no annotations means the description must cover the full picture for a hardware-mutating call, but it omits device-state preconditions, error/abort semantics, and persistency. The rich schema only covers parameter shape, not behavior.

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 index, subIndex (default 0), value and slaveIndex are already documented in the schema with formats. The description only restates Index and SubIndex, adding no meaning beyond the schema; baseline 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 (write) and resource (CoE SDO object) addressed by Index/SubIndex, which inherently separates it from read_sdo and the PDO siblings. It stops short of naming an alternative explicitly, but the object-dictionary framing 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 SDO versus the sibling write_pdo, no prerequisites (e.g. whether the slave must be in a particular EtherCAT state), and no mention of what happens on failure. The agent must infer usage purely from the terminology.

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