WritersLogic Verifiable AI Agent Hub Electrical Calc API
The Electrical Calc API from WritersLogic Verifiable AI Agent Hub — 1 operation(s) for electrical calc.
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OpenAPI Specification
openapi: 3.2.0
info:
title: WritersLogic Verifiable AI Agent Hub Electrical Calc API
version: 2.0.0
description: Pay-per-call agents settled in USDC on Base via x402. Every response carries a signed provenance envelope.
contact:
name: WritersLogic
url: https://writerslogic.com/agents
email: agents@writerslogic.com
servers:
- url: https://agents.writerslogic.com
tags:
- name: Electrical Calc
paths:
/api/v1/electrical-calc:
post:
operationId: electrical_calc
summary: Electrical arithmetic and resistor colour codes
description: 'Computes Ohm''s law and power from any two of V, I, R, P; series and parallel resistance with optional tolerance bounds; a voltage divider (with optional load); an LED series resistor rounded up to a preferred E-series value; conductor voltage drop from a caller-supplied resistivity; decodes or encodes 3 to 6 band IEC 60062 resistor colour codes; and tests whether a value is an official E3 to E192 value. For engineers and agents checking a circuit number before acting on it. It does not simulate AC, reactive or non-linear circuits, choose a part by power rating or look up a material''s resistivity. Exact decimal arithmetic. An optional claim map (output name to number, with a percent tolerance) turns it into a pass/fail check.
Price: 0.005 USDC on Base (x402).'
x-x402-price-usdc: '0.005'
x-x402-amount: '5000'
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.005'
x-audience: business
x-sample-url: https://agents.writerslogic.com/api/v1/samples/electrical-calc
security:
- x402: []
- apiKey: []
requestBody:
required: true
content:
application/json:
schema:
type: object
additionalProperties: false
required:
- op
properties:
op:
type: string
enum:
- ohm
- series
- parallel
- divider
- led-resistor
- line-drop
- colour-decode
- colour-encode
- e-series
description: ohm | series | parallel | divider | led-resistor | line-drop | colour-decode | colour-encode | e-series.
voltage:
type: number
description: 'ohm: volts.'
minimum: -1000000000000000
maximum: 1000000000000000
current:
type: number
description: 'ohm, led-resistor, line-drop: amperes.'
minimum: -1000000000000000
maximum: 1000000000000000
resistance:
type: number
description: 'ohm: ohms. colour-encode and e-series: the value in ohms.'
minimum: -1000000000000000
maximum: 1000000000000000
power:
type: number
description: 'ohm: watts.'
minimum: -1000000000000000
maximum: 1000000000000000
resistances:
type: array
items:
type: number
description: number
minimum: -1000000000000000
maximum: 1000000000000000
maxItems: 100
description: 'series/parallel: ohms, at most 100.'
tolerancePct:
type: number
description: 'series/parallel: shared tolerance percent for min/max bounds. colour-encode: tolerance percent to encode.'
minimum: 0
maximum: 100
vin:
type: number
description: 'divider: input volts.'
minimum: -1000000000000000
maximum: 1000000000000000
r1:
type: number
description: 'divider: top resistor, ohms.'
minimum: -1000000000000000
maximum: 1000000000000000
r2:
type: number
description: 'divider: bottom resistor, ohms.'
minimum: -1000000000000000
maximum: 1000000000000000
rLoad:
type: number
description: 'divider: optional load across r2, ohms.'
minimum: -1000000000000000
maximum: 1000000000000000
supplyVoltage:
type: number
description: 'led-resistor: supply volts. line-drop: optional, enables dropPercent.'
minimum: -1000000000000000
maximum: 1000000000000000
forwardVoltage:
type: number
description: 'led-resistor: LED forward volts.'
minimum: -1000000000000000
maximum: 1000000000000000
series:
type: string
enum:
- E3
- E6
- E12
- E24
- E48
- E96
- E192
description: 'led-resistor (default E24) and e-series: preferred-value series.'
lengthM:
type: number
description: 'line-drop: one-way length in metres.'
minimum: 0
maximum: 1000000000000000
areaMm2:
type: number
description: 'line-drop: conductor cross-section in mm^2.'
minimum: 0
maximum: 1000000000000000
resistivityOhmM:
type: number
description: 'line-drop: conductor resistivity in ohm-metres, supplied by the caller (not looked up).'
minimum: 0
maximum: 1
roundTrip:
type: boolean
description: 'line-drop: count out and return conductors (default true).'
maxDropPercent:
type: number
description: 'line-drop: fail when the drop exceeds this percent of supplyVoltage.'
minimum: 0
maximum: 100
bands:
type: array
items:
type: string
maxLength: 12
description: Colour name, head end first (IEC 60062 table).
maxItems: 6
minItems: 3
description: 'colour-decode: 3 to 6 colours read from the head end.'
bandCount:
type: integer
minimum: 3
maximum: 6
description: 'colour-encode: 3, 4 (default), 5 or 6 bands. 5 and 6 bands carry three digits.'
tcrPpm:
type: number
description: 'colour-encode with 6 bands: temperature coefficient in ppm/K.'
minimum: 0
maximum: 1000
claim:
type: object
description: Optional map from an output value name (e.g. resistance, vout, minResistance) to the number you expect.
claimTolerancePct:
type: number
description: 'Relative tolerance for claim values, percent (default 0: exact).'
minimum: 0
maximum: 100
example:
op: colour-decode
bands:
- brown
- black
- red
- gold
responses:
'200':
description: Paid result with provenance
content:
application/json:
schema:
type: object
properties:
data:
type: object
properties:
status:
type: string
enum:
- pass
- fail
- unknown
- unsupported
description: 'pass: every rule held. fail: a rule was violated (see witnesses). unknown: the input lacks the evidence to decide. unsupported: outside what this engine covers. Missing evidence is never a pass.'
operation:
type: string
values:
type: object
description: Named numeric results (a value is null where undefined, e.g. an unbounded ratio) in SI base units (ohm, volt, ampere, watt); null where undefined. colour-decode adds tolerancePct, min/maxResistance and tcrPpmPerK.
bands:
type: array
items:
type: string
description: 'colour-decode: the normalised colour names. colour-encode: the colours to print, head end first. Omitted for other ops.'
roles:
type: array
items:
type: string
description: 'colour-decode: the meaning assigned to each band position. Omitted for other ops.'
witnesses:
type: array
items:
type: object
properties:
ruleId:
type: string
detail:
type: string
path:
type: string
description: JSON pointer or dotted path into the input.
offset:
type: integer
index:
type: integer
expected:
description: What the rule required.
actual:
description: What the input had.
versions:
type: object
description: Every semantic dependency of this answer (engine, tables and their as-of dates, tokenizer, calendar, rounding profile).
limits:
type: array
items:
type: string
deterministic:
type: boolean
description: 'Always true: pure code, no model.'
_provenance:
type: object
description: C2PA-aligned manifest and W3C VC 2.0 (eddsa-jcs-2022) issued by the hub DID; verify at POST /api/v1/verify-provenance
required:
- data
- _provenance
'400':
description: Invalid request (no payment consumed)
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'401':
description: Invalid X-API-KEY
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
'402':
description: Payment required or invalid
content:
application/json:
schema:
type: object
description: x402 v2 PaymentRequired (also base64 in the PAYMENT-REQUIRED header)
properties:
x402Version:
type: integer
error:
type: string
code:
type: string
resource:
type: object
accepts:
type: array
items:
type: object
extensions:
type: object
'502':
description: Upstream failure; the payment is released or not settled
content:
application/json:
schema:
type: object
properties:
error:
type: string
code:
type: string
tags:
- Electrical Calc
components:
securitySchemes:
x402:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: x402 v2 payment payload (base64) sent after a 402 challenge
apiKey:
type: apiKey
in: header
name: X-API-KEY