SparkQuote NEC calculators
REMOTE · SPARKQUOTE.AI
NEC 2023 electrical calculators: wire size, ampacity, voltage drop, conduit fill, box fill, load.
Available components
Last scanned (23 hours ago)
Scores higher than 79% of remote servers
Reachable. Last reached 4 Nov 2026.
Category IoT and Hardware
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 Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability60
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 2135 tokens (~213/item across 10 items; 10 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 Management70
- Stability observed for 21 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
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
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; "voltage_drop" implies "drop" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Fail
- An AI judge read all 11 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
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 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
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 4 Nov 2026 · Probed https://sparkquote.ai/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.sparkquote.ai | CN=YR1,O=Let's Encrypt,C=US | 7 Oct 2026 | 5 Jan 2027 | RSA 2048 | SHA256-RSA | 6c28589a5a13c7fd6dbcc11bc70f6ee230c |
| SANs: *.sparkquote.ai, sparkquote.ai | ||||||
| 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 |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of sparkquote.ai. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| ai. | present | 1814, 3799 | 8, 8 | Verified |
| sparkquote.ai. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000 |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sparkquote.ai/mcp | Verified | 200 | |
| http (plaintext) | http://sparkquote.ai/mcp | HTTPS enforced | 308 | https://sparkquote.ai/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 →
bid_calculator Electrical bid calculator ~132
Electrical bid price from materials, markup, labor hours and rate, job costs, overhead and a target net margin (price = break-even / (1 − margin)).
| Name | Type | Req | Description |
|---|---|---|---|
| direct | number | – | Permits and other job costs ($). Optional. |
| hours | number | yes | Labor hours (h). |
| margin | number | yes | Target net margin (%). |
| markup | number | – | Material markup (%). Optional. |
| materials | number | yes | Material cost ($). |
| overhead | number | yes | Overhead (% of direct cost) (%). |
| rate | number | yes | Burdened labor cost ($/h). |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
box_fill Box fill calculator ~198
Minimum outlet box volume from NEC 314.16(B): conductor, device (2 each), clamp and grounding allowances times the Table 314.16(B) volume for the largest conductor.
| Name | Type | Req | Description |
|---|---|---|---|
| awg | string | yes | Largest conductor. "6" = 6 AWG; "8" = 8 AWG; "10" = 10 AWG; "12" = 12 AWG; "14" = 14 AWG; "16" = 16 AWG; "18" = 18 AWG. |
| clamps | string | yes | Internal cable clamps. "0" = None; "1" = One or more. |
| conductors | number | yes | Insulated conductors (not counting grounds). |
| devices | number | yes | Devices (switches, receptacles). |
| grounds | string | yes | Equipment grounding conductors. "0" = None; "1" = One or more. |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
conduit_fill Conduit fill calculator ~356
Percent fill and maximum number of THHN/THWN-2 conductors of one size in EMT or PVC Schedule 40, from NEC Chapter 9 Tables 1, 4 and 5.
| Name | Type | Req | Description |
|---|---|---|---|
| awg | string | yes | THHN/THWN-2 size. "1" = 1 AWG; "2" = 2 AWG; "3" = 3 AWG; "4" = 4 AWG; "6" = 6 AWG; "8" = 8 AWG; "10" = 10 AWG; "12" = 12 AWG; "14" = 14 AWG; "1/0" = 1/0 AWG; "2/0" = 2/0 AWG; "3/0" = 3/0 AWG; "4/0" =… |
| count | number | yes | Number of conductors. |
| size | string | yes | Trade size. "1" = 1"; "2" = 2"; "3" = 3"; "4" = 4"; "1/2" = 1/2"; "3/4" = 3/4"; "1-1/4" = 1-1/4"; "1-1/2" = 1-1/2"; "2-1/2" = 2-1/2"; "3-1/2" = 3-1/2". |
| type | string | yes | Conduit type. "EMT" = EMT; "PVC-40" = PVC Schedule 40. |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
load_calculator Residential load calculator (NEC 220.82) ~224
Dwelling service load by the NEC 220.82 optional method: 3 VA/ft² lighting, small-appliance and laundry circuits, fixed appliances, demand factor, heating or cooling, and the minimum standard service size. Leave an appliance out to count it as 0 VA.
| Name | Type | Req | Description |
|---|---|---|---|
| dishwasher | number | – | Dishwasher (VA). Optional. |
| disposal | number | – | Disposal (VA). Optional. |
| dryer | number | – | Dryer (VA). Optional. |
| ev | number | – | EV charger (VA). Optional. |
| heater | number | – | Water heater (VA). Optional. |
| hvac | number | – | Largest of heating or cooling (VA). Optional. |
| laundry | string | yes | Laundry circuit. "1" = Yes (1,500 VA); "0" = No. |
| other | number | – | Other fixed appliances (VA). Optional. |
| range | number | – | Range / cooktop (VA). Optional. |
| small | number | yes | Small-appliance circuits. |
| sqft | number | yes | Living area (ft²). |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
nec_ampacity NEC Table 310.16 ampacity lookup ~157
Allowable ampacity of one insulated conductor from NEC Table 310.16 (not more than three current-carrying conductors in a raceway or cable, 30°C ambient), before any adjustment or correction factors and before the 240.4(D) small-conductor limits.
| Name | Type | Req | Description |
|---|---|---|---|
| material | string | yes | "cu" = copper; "al" = aluminum. |
| size | string | yes | Conductor size: AWG ("14" … "4/0") or kcmil ("250" … "500"). |
| temp | string | yes | Temperature column in °C: 60 (NM-B, UF), 75 (THWN, most terminations), 90 (THHN, for derating). |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
ohms_law Ohm's law calculator ~83
Ohm's law and power: give exactly two of voltage, current, resistance and power; the other two are calculated.
| Name | Type | Req | Description |
|---|---|---|---|
| i | number | – | Current (A). Optional. |
| p | number | – | Power (W). Optional. |
| r | number | – | Resistance (Ω). Optional. |
| v | number | – | Voltage (V). Optional. |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
panel_schedule Panel schedule generator ~139
Lays circuits out on a 120/240 V single-phase or 208Y/120 V three-phase panel and totals the load per phase with the imbalance.
| Name | Type | Req | Description |
|---|---|---|---|
| circuits | string | yes | Circuits: description, breaker A, poles, VA (one per line) |
| spaces | string | yes | Spaces. "12" = 12; "20" = 20; "24" = 24; "30" = 30; "42" = 42. |
| system | string | yes | Panel. "1" = 120/240 V single-phase; "3" = 208Y/120 V three-phase. |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
voltage_drop Voltage drop calculator ~366
Voltage drop for a given conductor size, current and one-way length, single- or three-phase, from NEC Chapter 9 Table 8 circular mils (VD = 2·K·I·L / CM, or √3 for three-phase).
| Name | Type | Req | Description |
|---|---|---|---|
| amps | number | yes | Load current (A). |
| awg | string | yes | Size. "14" = 14 AWG; "12" = 12 AWG; "10" = 10 AWG; "8" = 8 AWG; "6" = 6 AWG; "4" = 4 AWG; "3" = 3 AWG; "2" = 2 AWG; "1" = 1 AWG; "1/0" = 1/0 AWG; "2/0" = 2/0 AWG; "3/0" = 3/0 AWG; "4/0" = 4/0 AWG; "2… |
| feet | number | yes | One-way distance (ft). |
| material | string | yes | Conductor. "cu" = Copper; "al" = Aluminum. |
| phase | string | yes | Phase. "1" = Single-phase; "3" = Three-phase. |
| volts | string | yes | Voltage. "120" = 120 V; "208" = 208 V; "240" = 240 V; "277" = 277 V; "480" = 480 V. |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
watts_to_amps Watts to amps calculator ~128
Current drawn by a load in watts at a voltage and power factor, single- or three-phase, plus the 125% continuous-load value.
| Name | Type | Req | Description |
|---|---|---|---|
| pf | number | yes | Power factor. |
| phase | string | yes | Phase. "1" = Single-phase; "3" = Three-phase. |
| volts | string | yes | Voltage. "120" = 120 V; "208" = 208 V; "240" = 240 V; "277" = 277 V; "480" = 480 V. |
| watts | number | yes | Power (W). |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
wire_size Wire size calculator ~248
Minimum conductor size for a circuit: NEC Table 310.16 ampacity at the termination temperature rating, the 240.4(D) small-conductor limits, voltage drop over the run, and the Table 250.122 equipment grounding conductor, increased in proportion under 250.122(B) when voltage drop upsizes the conductors.
| Name | Type | Req | Description |
|---|---|---|---|
| amps | number | yes | Breaker / load (A). |
| feet | number | yes | One-way distance (ft). |
| limit | number | yes | Max voltage drop (%). |
| material | string | yes | Conductor. "cu" = Copper; "al" = Aluminum. |
| phase | string | yes | Phase. "1" = Single-phase; "3" = Three-phase. |
| temp | string | yes | Termination rating. "60" = 60°C (NM-B, UF); "75" = 75°C (THHN in conduit); "90" = 90°C. |
| volts | string | yes | Voltage. "120" = 120 V; "208" = 208 V; "240" = 240 V; "277" = 277 V; "480" = 480 V. |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | – |
| inputs | object | yes | – |
| ok | boolean | yes | – |
| rows | array | yes | – |
| summary | string | yes | – |
| table | object | – | – |
| url | string | yes | – |
No examples provided.
How do I install the SparkQuote NEC calculators MCP server?
SparkQuote NEC calculators is a hosted endpoint at https://sparkquote.ai/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 · sparkquote.ai
claude mcp add --transport http ai-sparkquote-nec-calculators 'https://sparkquote.ai/mcp'
What is the SparkQuote NEC calculators MCP server?
SparkQuote NEC calculators is an MCP server listed in the public MCP registry as ai.sparkquote/nec-calculators. NEC 2023 electrical calculators: wire size, ampacity, voltage drop, conduit fill, box fill, load. This page covers its hosted endpoint (https://sparkquote.ai/mcp).
Is the SparkQuote NEC calculators MCP server safe to use?
SparkQuote NEC calculators scores 79 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 SparkQuote NEC calculators MCP server expose?
SparkQuote NEC calculators exposes 10 tools: wire_size, voltage_drop, watts_to_amps, conduit_fill, box_fill, and 5 more. Their descriptions and schemas cost roughly 2,031 tokens of context every time the server is loaded.
Does the SparkQuote NEC calculators MCP server require authentication?
No. We connected to SparkQuote NEC calculators without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the SparkQuote NEC calculators MCP server still maintained?
SparkQuote NEC calculators is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.