A
licenseNot graded
qualityC
maintenancePlan optimal container & truck loads: 3D layouts, right-size the container mix, and check utilization, centre of gravity, crush protection and securing across 200+ equipment types.
9 npm
MIT
Zhihuo Container Loading
Server Details
How many identical cartons fit in a container or space, where they go, plus a 3D loading plan.
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- Status
- Healthy
- Uptime
- 99.9% over 67 days
- Last Tested
- Transport
- Streamable HTTP · MCP 2025-11-25
- URL
TDQS
A4.5/5.0
Scored across 2 tools
Disambiguation5/5
The two tools are completely distinct: one performs container packing calculations and the other sends a support message. There is no plausible way to confuse the computational tool with the feedback channel.
Naming Consistency5/5
Both names use clean snake_case verb_noun form (pack_boxes, send_feedback), matching the same convention. No mixing of styles or vague verbs.
Tool Count3/5
Two tools is thin for a server, since really only one tool does the domain work while the other is a generic feedback channel. It is defensible for a focused single-purpose calculator but sits at the borderline of the rubric.
Completeness4/5
pack_boxes covers the core lifecycle of the domain well: box dims, container presets, explicit spaces, partial loads, weight limits, and a 3D visual, plus a feedback path for gaps. Minor gaps remain, such as mixed/multi-size box packing or reverse 'how many fit given a count' style queries.
Available Tools
2 toolspack_boxesARead-onlyIdempotentInspect
Calculate how many identical boxes fit in a rectangular space, and where.
The space is a shipping container, a pallet area, leftover container space,
or a larger box. Give the box's L/W/H and EITHER a `container` preset OR the
space's L/W/H (all in millimetres - container presets are mm). Boxes mix
orientations across regions to pack densely; the plain maximum-load answer
uses the exact T1 solver.
Args:
box_length: Box length.
box_width: Box width.
box_height: Box height.
container: Container preset instead of explicit space dims (fills the
internal usable L/W/H in mm; overrides space_* when recognised).
ISO dry: 20GP 20HQ 40GP 40HQ 45GP 45HQ; NA domestic: 53HC 48HC;
reefers: 20RF 40RF 40RH; EU pallet-wide: 40HQ-PW 45HQ-PW. Many
aliases (20/40/45, 20ft, 40HC, 40', 40 reefer, ...).
space_length: Space length (front-back). Use this OR `container`.
space_width: Space width (left-right).
space_height: Space height (up).
count: How many boxes to load. 0 (default) loads the maximum.
to_front: Anchor a partial load to the front (else the back).
to_left: Anchor a partial load to the left (else the right).
to_bottom: Kept for compatibility, no effect: boxes always rest on
the floor.
box_weight: Weight of one box (optional; same unit as max_weight).
max_weight: Max total load weight (optional; 0 = no weight limit).
include_image: Set true ONLY when the user wants to SEE or visualize
the loading plan / 3D layout (e.g. "show the loading plan",
"visualize it", "what does it look like?"). Default false is
faster and lighter and still returns `image_url`, a shareable
link to the 3D render. When true, the image is ALSO embedded
inline (Claude Desktop and Cherry Studio display it; the
claude.ai web app shows only the link either way).
Returns the maximum that fits, how many were loaded, the fill rate, the
region/block decomposition (each block's position, orientation, and
grid), any weight limit applied, an `image_url` link to the rendered 3D
loading plan, and - when include_image is true - the inline image too.
| Name | Required | Description | Default |
|---|---|---|---|
| count | No | ||
| to_left | No | ||
| to_front | No | ||
| box_width | Yes | ||
| container | No | ||
| to_bottom | No | ||
| box_height | Yes | ||
| box_length | Yes | ||
| box_weight | No | ||
| max_weight | No | ||
| space_width | No | ||
| space_height | No | ||
| space_length | No | ||
| include_image | No |
TDQS
A4.7/5.0
Behavior5/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond the read-only/idempotent annotations, it discloses non-obvious behavior: boxes mix orientations across regions, the plain maximum uses the exact T1 solver, `container` overrides `space_*`, `to_bottom` is a no-op because boxes always rest on the floor, and inline images only embed on certain clients while `image_url` is always returned.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Long, but justified by 14 parameters, and the purpose plus the container/space rule is front-loaded. There is minor redundancy between the `include_image` prose and the Returns paragraph about `image_url`, but every section otherwise earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no output schema, the description fully specifies the return payload (max fit, loaded count, fill rate, region/block decomposition, weight limit, `image_url`, optional inline image) and all input modes. An agent has everything needed to call and interpret it.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters5/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% with 14 parameters, so the description carries the full burden and does: it specifies millimetre units, enumerates container presets and aliases, documents defaults (count=0 loads max), anchor semantics, and weight units.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource ('Calculate how many identical boxes fit in a rectangular space, and where') and immediately clarifies the domain (container/pallet/box). It is trivially distinguishable from the sole sibling, send_feedback.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
Gives clear conditional guidance: supply EITHER a `container` preset OR explicit space dims, and use `include_image` ONLY when the user wants to see the plan. It handles the key decision points. It does not name alternative tools or state when not to call it, but no relevant alternative exists here.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
send_feedbackAInspect
Send a question, suggestion, or bug report about this container-loading tool to the Zhihuo maintainers.
Use this when the user wants to ask the tool's authors a question,
suggest an improvement (e.g. another container type or output field),
or report a result that looks wrong. The note reaches the Zhihuo team.
Args:
message: The question, suggestion, or bug report, in plain text.
contact: Optional email or handle if the user would like a reply.
category: Optional tag - "question", "suggestion", "bug", or "other".
Returns a short confirmation string.
| Name | Required | Description | Default |
|---|---|---|---|
| contact | No | ||
| message | Yes | ||
| category | No |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
A4.5/5.0
Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate non-read-only (readOnlyHint: false) and non-destructive (destructiveHint: false). The description adds that feedback reaches the Zhihuo team and includes optional contact/category. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness4/5
Is the description appropriately sized, front-loaded, and free of redundancy?
Description is well-structured with a brief intro, usage paragraph, and Args. It's front-loaded with purpose, but slightly verbose with the Args section. Still concise enough.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness5/5
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With an output schema present, the description succinctly notes it returns a short confirmation string. All three parameters are explained, and usage guidance is provided. No gaps for a feedback tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters5/5
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, but the description's Args section explains each parameter: message as plain text, contact as optional email/handle, category as optional tag with specific values. This adds essential meaning beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5
Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states it sends a question, suggestion, or bug report to maintainers. It uses specific verbs and resource, and clearly distinguishes from the sibling tool 'pack_boxes' which deals with packing.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description lists clear use cases: user questions, improvement suggestions, bug reports. It doesn't explicitly state when not to use, but the list is comprehensive and no alternative tools are needed.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
2 tool updates
- First observed
pack_boxes - First observed
send_feedback
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