Zhihuo RotoSpider Layout
REMOTE · MCP.ZHIHUO.NET · SCANNED SEP 27
Rotomolding mold-on-arm layout feasibility: which molds fit on a machine arm/spider, and how.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 2 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability52
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1328 tokens (~664/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage67
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "send_feedback" implies "send" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Zhihuo RotoSpider Layout MCP server?
Zhihuo RotoSpider Layout is a hosted endpoint at https://mcp.zhihuo.net/roto/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.zhihuo.net
claude mcp add --transport http net-zhihuo-mcp-rotospider-layout 'https://mcp.zhihuo.net/roto/mcp'
{
"mcpServers": {
"net-zhihuo-mcp-rotospider-layout": {
"url": "https://mcp.zhihuo.net/roto/mcp"
}
}
} {
"servers": {
"net-zhihuo-mcp-rotospider-layout": {
"type": "http",
"url": "https://mcp.zhihuo.net/roto/mcp"
}
}
} [mcp_servers.net-zhihuo-mcp-rotospider-layout] url = "https://mcp.zhihuo.net/roto/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"net-zhihuo-mcp-rotospider-layout": {
"type": "remote",
"url": "https://mcp.zhihuo.net/roto/mcp",
"enabled": true
}
}
} openclaw mcp add net-zhihuo-mcp-rotospider-layout --url 'https://mcp.zhihuo.net/roto/mcp' --transport streamable-http
mcp_servers:
net-zhihuo-mcp-rotospider-layout:
url: "https://mcp.zhihuo.net/roto/mcp" {
"McpServers": {
"net-zhihuo-mcp-rotospider-layout": {
"Transport": "http",
"Url": "https://mcp.zhihuo.net/roto/mcp"
}
}
} assistant mcp add net-zhihuo-mcp-rotospider-layout -t streamable-http -u 'https://mcp.zhihuo.net/roto/mcp'
{
"mcpServers": {
"net-zhihuo-mcp-rotospider-layout": {
"type": "http",
"url": "https://mcp.zhihuo.net/roto/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 26 Sept 26 0
- Tool “check_mold_layout” rewrote its description, which is the text the model reads security
- Server version: 1.2.1 → 2.0.0 functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 6 Sept 26 0
- Server version: 1.2.0 → 1.2.1 functional
- 4 Sept 26 −1
- Tool “check_mold_layout” rewrote its description, which is the text the model reads security
- Schema quality: excellent → good functional
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 14 Aug 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “check_mold_layout” rewrote its description, which is the text the model reads security
- Schema quality: 561 → 667 ▼ functional
- Server version: 1.0.6 → 1.2.0 functional
- “check_mold_layout” added an optional parameter “allow_overhang_within_envelope” cosmetic
- “check_mold_layout” added an optional parameter “include_layout” cosmetic
- “check_mold_layout” added an optional parameter “response_api” cosmetic
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 27 Sept 2026 · Probed https://mcp.zhihuo.net/roto/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp.zhihuo.net | CN=YE2,O=Let's Encrypt,C=US | 12 Aug 2026 | 10 Nov 2026 | ECDSA 256 | ECDSA-SHA384 | 54366792190a18f7894db2cc45445e90b14 |
| SANs: mcp.zhihuo.net | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.zhihuo.net. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| net. | present | 37331 | 13 | Verified |
| zhihuo.net. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.zhihuo.net/roto/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.zhihuo.net/roto/mcp | HTTPS enforced | 308 | https://mcp.zhihuo.net/roto/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_mold_layout ~970
Check whether molds fit together on a rotational-molding machine arm. Every answer comes from the deterministic RotoSpider geometric layout engine: rotation-envelope and dead-height checks, pairwise mold-to-mold clearance, offset-arm riser selection, and ring arrangements for 3+ identical molds. It never returns a physically invalid layout. Args: molds: List of mold objects. Use one explicit unit convention: Box/frame mold: {"length_mm": L, "width_mm": W, "height_mm": H}. Cylinder/tank mold: {"diameter_mm": D, "height_mm": H}. Exact L, slope, triangle, frustum, or complex mold: measured length_mm+width_mm+height_mm plus the complete geometry_asset_id+geometry_asset_revision returned by the geometry WebAPI or another trusted publisher. Decimal-inch aliases are length_in, width_in, height_in, and diameter_in. Each value is converted once to canonical micrometres; do not give both aliases for the same value. Optional per mold: "name", "weight_kg", "quantity" (default 1; use 0 to retain the mold type without requesting a copy). machine: Public-sample straight-arm preset. Available models are listed in the tool description. Leave empty AND give no explicit geometry to scan all presets ("which machine can take these molds?"). arm_type: 'straight' (dual spiders) or 'offset' (single-spider offset/L arm). Empty = both. spider_diameter_mm: Custom machine - spider (mounting plate) diameter. Giving this plus envelope_diameter_mm switches to custom-machine mode instead of presets. envelope_diameter_mm: Custom machine - rotation envelope diameter (for offset arms: the vertical envelope diameter).…
| Name | Type | Req | Description |
|---|---|---|---|
| allow_overhang_within_envelope | boolean | – | – |
| arm_type | string | – | – |
| clearance_min_in | – | – | – |
| clearance_min_mm | – | – | – |
| clearance_target_in | – | – | – |
| clearance_target_mm | – | – | – |
| dead_height_in | – | – | – |
| dead_height_mm | – | – | – |
| display_unit | string | – | – |
| envelope_diameter_in | – | – | – |
| envelope_diameter_mm | – | – | – |
| include_layout | boolean | – | – |
| machine | string | – | – |
| max_load_weight_kg | number | – | – |
| molds | array | yes | – |
| offset_horz_diameter_in | – | – | – |
| offset_horz_diameter_mm | – | – | – |
| offset_spider_y_in | – | – | – |
| offset_spider_y_mm | – | – | – |
| response_api | string | – | – |
| riser_heights_in | – | – | – |
| riser_heights_mm | – | – | – |
| spider_diameter_in | – | – | – |
| spider_diameter_mm | – | – | – |
No output schema declared.
No examples provided.
send_feedback ~61
Relay a user question, bug report, or suggestion to the maintainers. Args: message: The user's feedback text (required). contact: Optional reply address the user volunteers.
| Name | Type | Req | Description |
|---|---|---|---|
| contact | string | – | – |
| message | string | yes | – |
No output schema declared.
No examples provided.
What is the Zhihuo RotoSpider Layout MCP server?
Zhihuo RotoSpider Layout is an MCP server listed in the public MCP registry as net.zhihuo.mcp/rotospider-layout. Rotomolding mold-on-arm layout feasibility: which molds fit on a machine arm/spider, and how. This page covers its hosted endpoint (https://mcp.zhihuo.net/roto/mcp).
Is the Zhihuo RotoSpider Layout MCP server safe to use?
Zhihuo RotoSpider Layout scores 70 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Zhihuo RotoSpider Layout MCP server expose?
Zhihuo RotoSpider Layout exposes 2 tools: check_mold_layout, send_feedback. Their descriptions and schemas cost roughly 1,031 tokens of context every time the server is loaded.
Does the Zhihuo RotoSpider Layout MCP server require authentication?
No. We connected to Zhihuo RotoSpider Layout without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Zhihuo RotoSpider Layout MCP server still maintained?
Zhihuo RotoSpider Layout is still listed as active in the MCP registry. We last reached this channel on 27 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.