VoltPlan Wiring Diagrams
REMOTE · MCP.VOLTPLAN.APP · 2 COMPONENTS · SCANNED AUG 3
Generate 12V/24V/48V wiring diagrams and size wires, fuses, batteries, solar, and inverters.
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 →
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 9 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 Usability69
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1411 tokens (~156/item across 9 items; 9 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 Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
remote · mcp.voltplan.app
claude mcp add --transport http yuzu-hub-wiring-diagram-mcp https://mcp.voltplan.app/mcp
[mcp_servers.yuzu-hub-wiring-diagram-mcp] url = "https://mcp.voltplan.app/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"yuzu-hub-wiring-diagram-mcp": {
"type": "remote",
"url": "https://mcp.voltplan.app/mcp",
"enabled": true
}
}
} openclaw mcp add yuzu-hub-wiring-diagram-mcp --url https://mcp.voltplan.app/mcp --transport streamable-http
mcp_servers:
yuzu-hub-wiring-diagram-mcp:
url: "https://mcp.voltplan.app/mcp" {
"mcpServers": {
"yuzu-hub-wiring-diagram-mcp": {
"type": "http",
"url": "https://mcp.voltplan.app/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.
- 3 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Jul 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
- 30 Jul 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
- 29 Jul 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Jul 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Jul 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
- 26 Jul 26 62
First indexed and scored.
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 3 Aug 2026 · Probed https://mcp.voltplan.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp.voltplan.app | CN=YR1,O=Let's Encrypt,C=US | 25 Jul 2026 | 23 Oct 2026 | RSA 4096 | SHA256-RSA | 6b16252400c90567e76d4337ff92093d6d4 |
| SANs: mcp.voltplan.app | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
DNSSEC insecure
Validation of mcp.voltplan.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| voltplan.app. | 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 |
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.voltplan.app/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.voltplan.app/mcp | HTTPS enforced | 302 | https://mcp.voltplan.app/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.
calculate_battery_bank Battery Bank Sizing Calculator ~222
Calculate the recommended battery bank size based on daily energy consumption. Accounts for days of autonomy (how many days without charging) and depth of discharge. Returns required capacity, number of batteries, and wiring configuration.
| Name | Type | Req | Description |
|---|---|---|---|
| dailyConsumptionWh | number | yes | Daily energy consumption in watt-hours (from calculate_power_budget) |
| daysOfAutonomy | number | — | Days the system should run without any charging (default: 2) |
| depthOfDischargePercent | number | — | Usable percentage of battery capacity. LiFePO4: 80-90%, AGM: 50%, Gel: 50% (default: 80) |
| singleBatteryAh | number | yes | Capacity of a single battery in amp-hours (e.g. 100, 200) |
| singleBatteryVoltage | number | yes | Voltage of a single battery (e.g. 12.8 for LiFePO4, 12 for lead-acid) |
| systemVoltage | number | yes | Target system voltage in volts (e.g. 12, 24, 48) |
No output schema declared.
No examples provided.
calculate_battery_config Battery Configuration Calculator ~155
Determine how to arrange batteries in series and/or parallel to achieve a target voltage and capacity. Returns the number of batteries needed, the wiring configuration (e.g. 2S3P), and step-by-step wiring instructions.
| Name | Type | Req | Description |
|---|---|---|---|
| singleBatteryAh | number | yes | Capacity of one battery in amp-hours |
| singleBatteryVoltage | number | yes | Nominal voltage of one battery (e.g. 12.8 for LiFePO4, 12 for lead-acid, 3.2 for LiFePO4 cells) |
| targetCapacityAh | number | yes | Desired total capacity in amp-hours |
| targetVoltage | number | yes | Desired system voltage (e.g. 12, 24, 48) |
No output schema declared.
No examples provided.
calculate_charging_time Charging Time Calculator ~218
Estimate how long it takes to charge a battery bank from a given state of charge to a target level. Accounts for the bulk charging phase (constant current, up to ~80% SoC) and the slower absorption phase (tapering current, 80-100% SoC). Works for any charging source: solar, shore power, alternator.
| Name | Type | Req | Description |
|---|---|---|---|
| batteryCapacityAh | number | yes | Total battery bank capacity in amp-hours |
| batteryVoltage | number | yes | Battery bank voltage (e.g. 12, 24, 48) |
| chargeCurrentAmps | number | — | Maximum charge current in amps (if limited by the charger or battery BMS). If omitted, calculated from power and voltage. |
| chargePowerWatts | number | yes | Charger output power in watts |
| currentStateOfChargePercent | number | yes | Current state of charge in percent (e.g. 20 for 20%) |
| targetStateOfChargePercent | number | — | Target state of charge in percent (default: 100) |
No output schema declared.
No examples provided.
calculate_inverter_size Inverter Sizing Calculator ~112
Calculate the recommended inverter size for running AC loads from a DC battery system. Accounts for continuous power, startup surge power (motors typically surge 2-3x), and includes a 25% headroom for the continuous rating. Returns the recommended inverter wattage and the DC current draw at system voltage.
| Name | Type | Req | Description |
|---|---|---|---|
| loads | array | yes | List of AC loads that will run through the inverter |
| systemVoltage | number | yes | DC system voltage (e.g. 12, 24, 48) |
No output schema declared.
No examples provided.
calculate_power_budget Power Budget / Energy Audit ~111
Calculate total daily energy consumption from a list of electrical loads. Each load specifies its power draw, how many hours per day it runs, and quantity. Returns total daily energy (Wh and Ah), peak power draw, and average power. This is typically the first step in sizing a battery bank and solar system.
| Name | Type | Req | Description |
|---|---|---|---|
| loads | array | yes | List of electrical loads to include in the budget |
| systemVoltage | number | yes | System voltage in volts (e.g. 12, 24, 48) |
No output schema declared.
No examples provided.
calculate_solar_size Solar Panel Sizing Calculator ~164
Calculate the required solar panel wattage to cover daily energy consumption. Accounts for peak sun hours at the location and system efficiency losses (MPPT conversion, wiring, temperature derating). Returns required wattage and common panel configurations.
| Name | Type | Req | Description |
|---|---|---|---|
| dailyConsumptionWh | number | yes | Daily energy consumption in watt-hours (from calculate_power_budget) |
| peakSunHours | number | yes | Average daily peak sun hours for the location. Examples: Northern Europe winter 1-2h, summer 4-6h. Southern US 5-6h. Equatorial regions 5-7h. |
| systemEfficiency | number | — | Overall system efficiency factor (default: 0.85). Accounts for MPPT losses, wiring losses, temperature derating, and panel soiling. |
No output schema declared.
No examples provided.
calculate_wire_gauge Cable Cross-Section & Resistance Calculator ~238
Calculate the recommended wire gauge / cable cross-section for a DC circuit. Considers both ampacity (current carrying capacity) and voltage drop to recommend the optimal cable size. Also returns total resistance, power loss, and a fuse recommendation. Supports copper conductors from 0.75 mm² (18 AWG) to 240 mm² (300 MCM).
| Name | Type | Req | Description |
|---|---|---|---|
| cableLengthM | number | yes | One-way cable length in meters |
| current | number | — | Load current in amps. Provide either current or power. |
| isRoundTrip | boolean | — | Account for both positive and negative conductor (default: true). Set to false for chassis-ground returns. |
| maxVoltageDropPercent | number | — | Maximum acceptable voltage drop in percent (default: 3%) |
| power | number | — | Load power in watts. Will be converted to current using the voltage. Provide either current or power. |
| temperatureCelsius | number | — | Ambient temperature in °C (default: 20°C). Affects copper resistance. |
| voltage | number | yes | System voltage in volts (e.g. 12, 24, 48) |
No output schema declared.
No examples provided.
generate_wiring_diagram Generate Wiring Diagram ~153
Generate an electrical wiring diagram for campers, boats, or off-grid setups. Returns a complete schematic with batteries, chargers, protection components, and loads. Protection components (shunt, main switch, low-voltage cutoff) are auto-generated when both batteries and loads are provided.
| Name | Type | Req | Description |
|---|---|---|---|
| batteries | array | — | Batteries in the system |
| chargers | array | — | Chargers with their power sources |
| format | string | — | Output format: svg (recommended, renders inline) or png (base64-encoded image, may not display in all clients) |
| loads | array | — | Electrical loads / consumers |
| systemName | string | yes | Name of the electrical system (e.g. "My Camper Van") |
No output schema declared.
No examples provided.
list_component_types List Component Types ~38
List all available component types and example configurations for building wiring diagrams. Use this to understand what parameters are needed before calling generate_wiring_diagram.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.