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API de utilidades

Los mismos motores testeados que mueven nuestras herramientas de navegador, invocables como API JSON gratuita y como servidor MCP remoto. Solo texto y datos: el procesado de archivos (imágenes, PDF) se queda a propósito en tu navegador y nunca tendrá endpoint de servidor.

index.json · openapi.json · https://workingfigures.com/api/mcp

Inicio rápido

Elige un endpoint

curl -s https://workingfigures.com/api/v1/list-calculators \
  -H "Content-Type: application/json" \
  -d '{"locale":"en","page":1,"perPage":3}'
# {"items":[{"slug":"freelance-rate-calculator","name":"Hourly rate calculator","description":"From target income to a defensible quote.","category":"rates","jurisdiction":"global","url":"https://workingfigures.com/calculators/freelance-rate-calculator"},{"slug"…

curl -s https://workingfigures.com/api/v1/list-utilities \
  -H "Content-Type: application/json" \
  -d '{"locale":"en","page":1,"perPage":3}'
# {"items":[{"slug":"csv-to-json","name":"CSV to JSON converter","description":"Paste CSV and get clean JSON instantly. Detects commas, semicolons and tabs, handles quoted fields, and runs entirely in your browser.","kind":"transform","url":"https://workingfigur…

curl -s https://workingfigures.com/api/v1/list-datasets \
  -H "Content-Type: application/json" \
  -d '{"locale":"en","page":1,"perPage":3}'
# {"items":[{"name":"The Freelance Cost Index","description":"Monthly index of what a US freelance business costs to run: tax drag, IRS interest, platform take, card fees, cross-border cost and shelter room.","checked":"2026-09-01","url":"https://workingfigures.…

curl -s https://workingfigures.com/api/v1/list-guides \
  -H "Content-Type: application/json" \
  -d '{"locale":"en","page":1,"perPage":3}'
# {"items":[{"slug":"freelance-slow-season-plan","title":"Plan a freelance slow season with runway math","description":"Model a $3,000 monthly cash burn, see how long $12,000 lasts, and set a trigger for cutting costs before a dry spell empties the account.","pu…

curl -s https://workingfigures.com/api/v1/list-news \
  -H "Content-Type: application/json" \
  -d '{"locale":"en","page":1,"perPage":3}'
# {"items":[{"slug":"upwork-direct-to-us-bank-fee-september-2026","title":"Upwork starts charging $2.99 on Direct to U.S. Bank payouts abroad","description":"From September 1, 2026 each Direct to U.S. Bank withdrawal costs $2.99 if your tax address is outside th…

curl -s https://workingfigures.com/api/v1/get-guide \
  -H "Content-Type: application/json" \
  -d '{"slug":"1099-vs-w2-the-real-math","locale":"en"}'
# {"slug":"1099-vs-w2-the-real-math","title":"1099 vs W-2: the real take-home math","description":"Why dividing a salary by 2,080 hours is a trap, what employer benefits are worth in dollars, and the conversion in both directions.","published":"2026-08-20","upda…

curl -s https://workingfigures.com/api/v1/get-news \
  -H "Content-Type: application/json" \
  -d '{"slug":"example-news-slug","locale":"en"}'

curl -s https://workingfigures.com/api/v1/slugify \
  -H "Content-Type: application/json" \
  -d '{"text":"Cuánto cobrar en 2026"}'
# {"slug":"cuanto-cobrar-en-2026"}

curl -s https://workingfigures.com/api/v1/convert-case \
  -H "Content-Type: application/json" \
  -d '{"text":"working figures utility api","mode":"title"}'
# {"result":"Working Figures Utility Api"}

curl -s https://workingfigures.com/api/v1/base64-encode \
  -H "Content-Type: application/json" \
  -d '{"text":"Working Figures"}'
# {"result":"V29ya2luZyBGaWd1cmVz"}

curl -s https://workingfigures.com/api/v1/base64-decode \
  -H "Content-Type: application/json" \
  -d '{"text":"V29ya2luZyBGaWd1cmVz"}'
# {"result":"Working Figures"}

curl -s https://workingfigures.com/api/v1/url-encode \
  -H "Content-Type: application/json" \
  -d '{"text":"rate = 75 €/hour"}'
# {"result":"rate%20%3D%2075%20%E2%82%AC%2Fhour"}

curl -s https://workingfigures.com/api/v1/url-decode \
  -H "Content-Type: application/json" \
  -d '{"text":"rate%20%3D%2075%20%E2%82%AC%2Fhour"}'
# {"result":"rate = 75 €/hour"}

curl -s https://workingfigures.com/api/v1/html-entities-encode \
  -H "Content-Type: application/json" \
  -d '{"text":"Fees < 1% & \"hidden\" costs"}'
# {"result":"Fees &lt; 1% &amp; &quot;hidden&quot; costs"}

curl -s https://workingfigures.com/api/v1/html-entities-decode \
  -H "Content-Type: application/json" \
  -d '{"text":"Fees &lt; 1% &amp; &quot;hidden&quot; costs"}'
# {"result":"Fees < 1% & \"hidden\" costs"}

curl -s https://workingfigures.com/api/v1/json-format \
  -H "Content-Type: application/json" \
  -d '{"json":"{\"rate\":75,\"currency\":\"USD\",\"hours\":[8,6,7]}","indent":"2"}'
# {"result":"{\n  \"rate\": 75,\n  \"currency\": \"USD\",\n  \"hours\": [\n    8,\n    6,\n    7\n  ]\n}"}

curl -s https://workingfigures.com/api/v1/csv-to-json \
  -H "Content-Type: application/json" \
  -d '{"csv":"client,hours,rate\nAcme,12,75\nGlobex,8,90"}'
# {"rows":[{"client":"Acme","hours":12,"rate":75},{"client":"Globex","hours":8,"rate":90}]}

curl -s https://workingfigures.com/api/v1/json-to-csv \
  -H "Content-Type: application/json" \
  -d '{"json":"[{\"client\":\"Acme\",\"hours\":12},{\"client\":\"Globex\",\"hours\":8}]"}'
# {"csv":"client,hours\nAcme,12\nGlobex,8"}

curl -s https://workingfigures.com/api/v1/word-count \
  -H "Content-Type: application/json" \
  -d '{"text":"Freelance rates vary widely by market. Know your floor before you quote."}'
# {"characters":72,"charactersNoSpaces":61,"words":12,"sentences":2,"paragraphs":1,"readingMinutes":1}

curl -s https://workingfigures.com/api/v1/diff \
  -H "Content-Type: application/json" \
  -d '{"original":"rate: 70\nhours: 10","changed":"rate: 75\nhours: 10"}'
# {"lines":[{"type":"del","text":"rate: 70"},{"type":"add","text":"rate: 75"},{"type":"same","text":"hours: 10"}],"stats":{"added":1,"removed":1,"unchanged":1}}

curl -s https://workingfigures.com/api/v1/timestamp \
  -H "Content-Type: application/json" \
  -d '{"value":"1756000000"}'
# {"source":"seconds","unixSeconds":1756000000,"unixMillis":1756000000000,"iso":"2025-08-24T01:46:40.000Z","offsetSeconds":-35368266}

curl -s https://workingfigures.com/api/v1/timezone-convert \
  -H "Content-Type: application/json" \
  -d '{"datetime":"2026-08-23T09:00","from":"Europe/Madrid","to":"America/New_York"}'
# {"epochMs":1787468400000,"iso":"2026-08-23T07:00:00.000Z","target":{"year":2026,"month":8,"day":23,"hour":3,"minute":0},"fromOffset":"UTC+2","toOffset":"UTC-4"}

curl -s https://workingfigures.com/api/v1/color-convert \
  -H "Content-Type: application/json" \
  -d '{"value":"#053a2e"}'
# {"hex":"#053a2e","rgb":"rgb(5, 58, 46)","hsl":"hsl(166, 84%, 12%)","css":"rgb(5, 58, 46)"}

curl -s https://workingfigures.com/api/v1/currency-rates \
  -H "Content-Type: application/json" \
  -d '{}'
# {"date":"2026-10-06","base":"EUR","rates":{"EUR":1,"AUD":1.614,"BRL":5.5991,"CAD":1.6058,"CHF":0.9359,"CNY":7.5554,"CZK":24.405,"DKK":7.4747,"GBP":0.8488,"HKD":8.8438,"HUF":364.95,"IDR":20104.8,"ILS":3.4348,"INR":108.6615,"ISK":137.2,"JPY":178.15,"KRW":1508.67…

curl -s https://workingfigures.com/api/v1/currency-convert \
  -H "Content-Type: application/json" \
  -d '{"amount":1500,"from":"EUR","to":"USD"}'
# {"result":1690.35,"rate":1.1269,"date":"2026-10-06","note":"ECB reference rate: informational mid-market figure, not a tradable price."}

curl -s https://workingfigures.com/api/v1/convert-data \
  -H "Content-Type: application/json" \
  -d '{"text":"users:\n  - id: 1\n    name: Ada","from":"yaml","to":"toon"}'
# {"result":"users[1]{id,name}:\n  1,Ada"}

curl -s https://workingfigures.com/api/v1/json-to-toon \
  -H "Content-Type: application/json" \
  -d '{"text":"{\"users\":[{\"id\":1,\"name\":\"Ada\"},{\"id\":2,\"name\":\"Bob\"}]}"}'
# {"result":"users[2]{id,name}:\n  1,Ada\n  2,Bob","approxTokens":{"json":39,"toon":16}}

curl -s https://workingfigures.com/api/v1/toon-to-json \
  -H "Content-Type: application/json" \
  -d '{"text":"users[2]{id,name}:\n  1,Ada\n  2,Bob"}'
# {"result":"{\n  \"users\": [\n    {\n      \"id\": 1,\n      \"name\": \"Ada\"\n    },\n    {\n      \"id\": 2,\n      \"name\": \"Bob\"\n    }\n  ]\n}"}

curl -s https://workingfigures.com/api/v1/uuid \
  -H "Content-Type: application/json" \
  -d '{"count":2}'
# {"uuids":["783231ac-9d21-4b69-9ba1-58ff44ecc64d","20ecea0a-79a4-46b0-bb02-e42c440f779b"]}

curl -s https://workingfigures.com/api/v1/lorem-ipsum \
  -H "Content-Type: application/json" \
  -d '{"count":2,"unit":"sentences"}'
# {"text":"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cillum aliqua aliquip sed sed nisi enim sed sint."}

curl -s https://workingfigures.com/api/v1/hourly-to-salary \
  -H "Content-Type: application/json" \
  -d '{"hourlyRate":85,"billableHoursPerWeek":30,"weeksWorked":48,"healthMonthly":550,"matchPct":4}'
# {"contractAnnualRevenue":122400,"w2SalaryEquivalent":103716.97268248993,"benefitsValue":18683.02731751008,"contractPremium":0.18013471502590672,"billableHoursPerYear":1440}

curl -s https://workingfigures.com/api/v1/savings-goal \
  -H "Content-Type: application/json" \
  -d '{"monthlyExpenses":3200,"targetMonths":6,"currentSavings":5000,"monthlySaving":800}'
# {"targetFund":19200,"gap":14200,"progress":0.2604166666666667,"monthsToGoal":17.75,"series":[5000,5800,6600,7400,8200,9000,9800,10600,11400,12200,13000,13800,14600,15400,16200,17000,17800,18600,19200]}

curl -s https://workingfigures.com/api/v1/estimated-tax-penalty \
  -H "Content-Type: application/json" \
  -d '{"requiredAnnual":20000,"paidPerQuarter":[0,5000,5000,5000]}'
# {"totalPenalty":339.45205479452056,"periods":[{"dueDate":"2026-04-15","underpayment":5000,"days":61,"interest":50.136986301369866},{"dueDate":"2026-06-15","underpayment":5000,"days":92,"interest":86.02739726027397},{"dueDate":"2026-09-15","underpayment":5000,"…

curl -s https://workingfigures.com/api/v1/invoice-aging \
  -H "Content-Type: application/json" \
  -d '{"invoices":[{"client":"Adler Studio","reference":"INV-038","amount":1800,"dueDate":"2026-08-01"},{"client":"Vela Media","reference":"INV-019","amount":2500,"dueDate":"2026-04-15"}],"today":"2026-08-23","annualRatePct":12}'
# {"rows":[{"client":"Vela Media","reference":"INV-019","amount":2500,"dueDate":"2026-04-15","daysLate":130,"bucket":"d90plus","interest":106.84931506849314},{"client":"Adler Studio","reference":"INV-038","amount":1800,"dueDate":"2026-08-01","daysLate":22,"bucke…

curl -s https://workingfigures.com/api/v1/transfer-fees \
  -H "Content-Type: application/json" \
  -d '{"amount":5000,"pctFee":0.55,"fixedFee":0,"fxMarkupPct":0,"recipientFee":0}'
# {"checked":"2026-09-01","custom":{"id":"custom","name":"custom","explicitFee":27.500000000000004,"fxCost":0,"recipientFee":0,"totalCost":27.500000000000004,"received":4972.5,"effectivePct":0.0055000000000000005,"fxDisclosed":true,"source":"","noteKey":""},"pro…

curl -s https://workingfigures.com/api/v1/cash-flow-forecast \
  -H "Content-Type: application/json" \
  -d '{"openingBalance":8000,"invoices":[{"client":"Adler Studio","amount":4000,"expectedDate":"2026-09-10"}],"recurring":[{"label":"Rent","amount":1400,"dayOfMonth":1}],"otherMonthlySpend":1500,"today":"2026-08-23","horizonDays":90}'
# {"endingBalance":3300,"lowestBalance":3300,"lowestDate":"2026-11-20","firstNegativeDate":null,"totalInflow":4000,"totalOutflow":8700,"days":[{"date":"2026-08-23","inflow":0,"outflow":50,"balance":7950},{"date":"2026-08-24","inflow":0,"outflow":50,"balance":790…

curl -s https://workingfigures.com/api/v1/llc-costs \
  -H "Content-Type: application/json" \
  -d '{"state":"CA"}'
# {"checked":"2026-08-23","state":{"code":"CA","name":"California","filingFee":70,"reportFee":20,"reportCadence":"biennial","annualTax":800,"source":"https://bizfileonline.sos.ca.gov","note":"Filing fee ($70) and biennial Statement of Information fee ($20, LLC-1…

curl -s https://workingfigures.com/api/v1/timezone-abbreviation \
  -H "Content-Type: application/json" \
  -d '{"code":"CST"}'
# {"at":"2026-10-07T10:17:46.280Z","code":"CST","ambiguous":true,"meanings":[{"code":"CST","slug":"cst","region":"US central states","zone":"America/Chicago","kind":"standard","sibling":"CDT","offsetMinutes":-360,"offset":"UTC-6","activeNow":false,"time":{"hour"…

curl -s https://workingfigures.com/api/v1/year-end-checklist \
  -H "Content-Type: application/json" \
  -d '{"plannedPurchases":true,"hasInvestments":true,"behindOnQuarterlies":true}'
# {"sections":[{"section":"timing","items":["invoiceNow","chaseReceivables"]},{"section":"deductions","items":["expenseSweep","prepayEligible","buyBeforeDec31","placedInService"]},{"section":"retirement","items":["openPlanNote"]},{"section":"investments","items"…

curl -s https://workingfigures.com/api/v1/mortgage-affordability \
  -H "Content-Type: application/json" \
  -d '{"country":"us","netProfit":90000,"yearsTrading":3,"otherDebtMonthly":500,"deposit":60000,"ratePct":6.5,"termYears":30,"extraDeduction":10000,"marginalTaxPct":30}'
# {"qualifyingAnnualIncome":90000,"qualifyingMonthlyIncome":7500,"maxMonthlyPayment":2875,"maxLoan":454856.1061690851,"maxProperty":514856.1061690851,"depositIsTheLimit":false,"meetsHistory":true,"rule":{"model":"payment-ratio","maxDebtSharePct":45,"incomeMultip…

curl -s https://workingfigures.com/api/v1/conference-trip-cost \
  -H "Content-Type: application/json" \
  -d '{"ticket":700,"travel":550,"lodgingPerNight":180,"nights":3,"mealsPerDay":60,"daysAway":4,"billableDaysLost":3,"dayRate":900,"otherCosts":60,"marginalTaxPct":32}'
# {"lines":[{"id":"ticket","amount":700,"deductible":700},{"id":"travel","amount":550,"deductible":550},{"id":"lodging","amount":540,"deductible":540},{"id":"meals","amount":240,"deductible":120},{"id":"other","amount":60,"deductible":60}],"cashCost":2090,"lostB…

curl -s https://workingfigures.com/api/v1/es-pension-jubilacion \
  -H "Content-Type: application/json" \
  -d '{"periods":[{"years":12,"regimen":"general","monthlyBase":1800},{"years":18,"regimen":"reta","monthlyBase":1200}],"retirementAge":66.83}'
# {"monthsCotizados":360,"yearsCotizados":30,"eligible":true,"percentage":85.18,"baseReguladora":1178.4406664206851,"brMethod":"b302","brMethodA":1172.5714285714287,"brMethodB":1178.4406664206851,"ordinaryAgeMonths":802,"anticipationMonths":0,"delayMonths":0,"br…

curl -s https://workingfigures.com/api/v1/es-modelo-130 \
  -H "Content-Type: application/json" \
  -d '{"quarters":[{"ingresos":12000,"gastos":3000,"retenciones":1800},{"ingresos":12000,"gastos":3000,"retenciones":1800}],"priorYearNet":28000,"actividad":"general","pctIncomeWithRetencion":60}'
# {"quarters":[{"quarter":1,"baseAcumulada":9000,"cuota":1800,"minoracion":0,"pagosAnteriores":0,"retencionesAcumuladas":1800,"aPagar":0},{"quarter":2,"baseAcumulada":18000,"cuota":3600,"minoracion":0,"pagosAnteriores":0,"retencionesAcumuladas":3600,"aPagar":0},…

curl -s https://workingfigures.com/api/v1/es-nomina-bruto-neto \
  -H "Content-Type: application/json" \
  -d '{"annualGross":30000,"pagas":14,"contract":"indefinido","ccaa":"es-md","children":2,"childrenUnder3":1,"age":38}'
# {"monthlyBase":2500,"workerRatePct":6.5,"annualSs":1950,"reduccionTrabajo":0,"baseImponible":26050,"minimo":13450,"annualIrpf":3183.6527700000006,"irpfEstatal":1687.5,"irpfAutonomico":1496.1527700000001,"retencionPct":10.612175900000002,"annualNet":24866.34723…

curl -s https://workingfigures.com/api/v1/uk-state-pension \
  -H "Content-Type: application/json" \
  -d '{"qualifyingYears":22,"futureYears":8,"boughtYears":3}'
# {"effectiveYears":33,"yearsShort":2,"weekly":227.51142857142858,"annual":11830.594285714285,"sharePct":94.28571428571428,"valuePerYear":358.5028571428572,"costPerYear":956.8,"paybackYears":2.668876916701201,"boughtValue":1075.5085714285715,"boughtCost":2870.39…

curl -s https://workingfigures.com/api/v1/us-social-security-estimate \
  -H "Content-Type: application/json" \
  -d '{"averageAnnualEarnings":70000,"yearsWorked":30,"claimAge":67,"selfEmployed":true}'
# {"coveredEarnings":64645,"zeroYears":5,"aime":4617.5,"pia":2223.48,"claimAdjustmentPct":0,"monthlyBenefit":2223.48,"annualBenefit":26681.760000000002,"replacementRate":0.381168,"eligible":true,"bendPointYear":2026,"rulesChecked":"2026-08","note":"Level earning…

curl -s https://workingfigures.com/api/v1/finance-score \
  -H "Content-Type: application/json" \
  -d '{"netProfit":90000,"entity":"sole","quarterlies":"some","retirementContributed":0,"expenseTracking":"manual","homeOfficeSqft":120,"homeOfficeClaimed":false,"businessMiles":2500,"mileageLogged":false,"topClientPct":45,"monthlyExpenses":4500,"cashReserve":9000}'
# {"score":32,"band":"atRisk","domains":[{"id":"structure","score":28,"weight":0.2},{"id":"payments","score":50,"weight":0.2},{"id":"deductions","score":20,"weight":0.15},{"id":"retirement","score":0,"weight":0.15},{"id":"buffer","score":33,"weight":0.15},{"id":…

curl -s https://workingfigures.com/api/v1/cost-index \
  -H "Content-Type: application/json" \
  -d '{}'
# {"id":"2026-09","published":"2026-09-01","score":5.3,"band":"mixed","components":[{"id":"taxDrag","value":0.2526,"source":"IRS Rev. Proc. 2024-40 (2025 brackets), SSA wage base; our quarterly tax engine at $90,000 profit","checked":"2026-09-01","weight":0.25,"…

Endpoints de contenido

El texto de referencia de los endpoints es material de especificación y se mantiene en inglés; las páginas de herramienta enlazadas en la primera columna están totalmente localizadas.

POST /api/v1/…	Qué hace	En la web
list-datasets	Paginated catalog of the published datasets under /data, with the date each was last checked.	Ver JSON: respuesta directa de list-datasets
list-calculators	Paginated catalog of the money calculators (name, description, URL).	Ir: abrir la página de list-calculators Ver JSON: respuesta directa de list-calculators
list-utilities	Paginated catalog of the in-browser utilities under /convert.	Ir: abrir la página de list-utilities Ver JSON: respuesta directa de list-utilities
list-guides	Paginated catalog of published guides (title, description, dates, URL).	Ir: abrir la página de list-guides Ver JSON: respuesta directa de list-guides
get-guide	Read one published guide in full: metadata plus the Markdown body.	Ir: abrir la página de get-guide Ver JSON: respuesta directa de get-guide
list-news	Paginated news briefs (title, description, publish time, sources, URL).	Ir: abrir la página de list-news Ver JSON: respuesta directa de list-news
get-news	Read one news brief in full: metadata, sources and the Markdown body.	Ir: abrir la página de get-news Ver JSON: respuesta directa de get-news

Endpoints de calculadoras

POST /api/v1/…	Qué hace	En la web
hourly-to-salary	Convert a contract hourly rate into the W-2 salary that costs an employer the same.	Ir: abrir la página de hourly-to-salary Ver JSON: respuesta directa de hourly-to-salary
savings-goal	Size an emergency fund in months of expenses and time the gap at a saving pace.	Ir: abrir la página de savings-goal Ver JSON: respuesta directa de savings-goal
estimated-tax-penalty	IRS underpayment interest per quarter at the published rates (Form 2210 chart method).	Ir: abrir la página de estimated-tax-penalty Ver JSON: respuesta directa de estimated-tax-penalty
invoice-aging	Age a list of unpaid invoices into 30/60/90 buckets and price the delay.	Ir: abrir la página de invoice-aging Ver JSON: respuesta directa de invoice-aging
transfer-fees	Cost of a cross-border payment at published provider pricing, exchange-rate markup included.	Ir: abrir la página de transfer-fees Ver JSON: respuesta directa de transfer-fees
cash-flow-forecast	Daily cash balance over a horizon from expected payments and fixed costs.	Ir: abrir la página de cash-flow-forecast Ver JSON: respuesta directa de cash-flow-forecast
llc-costs	LLC filing, report and annual tax costs for all 50 US states and DC, with first-year and recurring totals.	Ir: abrir la página de llc-costs Ver JSON: respuesta directa de llc-costs
year-end-checklist	Build the December tax checklist for a freelancer situation (six booleans in, sections out).	Ir: abrir la página de year-end-checklist Ver JSON: respuesta directa de year-end-checklist
mortgage-affordability	Indicative self-employed borrowing capacity from net profit (US, ES, UK rule sets), plus what an extra deduction costs in borrowing power.	Ir: abrir la página de mortgage-affordability Ver JSON: respuesta directa de mortgage-affordability
conference-trip-cost	True cost of a conference trip: cash plus the billing lost, net of the deduction (US meals limited to 50%).	Ir: abrir la página de conference-trip-cost Ver JSON: respuesta directa de conference-trip-cost
es-pension-jubilacion	Spanish state pension estimate from a career of periods (employee, self-employed or mixed), with the 2026 dual base reguladora and the early or delayed retirement adjustment.	Ir: abrir la página de es-pension-jubilacion Ver JSON: respuesta directa de es-pension-jubilacion
es-modelo-130	Spanish modelo 130 quarterly income-tax prepayment: 20% of the profit accumulated since January, net of earlier payments, client withholding and the low-income reduction.	Ir: abrir la página de es-modelo-130 Ver JSON: respuesta directa de es-modelo-130
es-nomina-bruto-neto	Spanish employee gross-to-net pay: 2026 worker Social Security rates, IRPF withholding and the net figure per payslip at 12 or 14 payments.	Ir: abrir la página de es-nomina-bruto-neto Ver JSON: respuesta directa de es-nomina-bruto-neto
uk-state-pension	UK new State Pension forecast from qualifying years, with the shortfall to the full rate and the payback on a voluntary Class 3 top-up.	Ir: abrir la página de uk-state-pension Ver JSON: respuesta directa de uk-state-pension
us-social-security-estimate	Social Security retirement benefit estimate: AIME over 35 years, 2026 bend points, claiming-age adjustment and the 92.35% self-employment coverage haircut.	Ir: abrir la página de us-social-security-estimate Ver JSON: respuesta directa de us-social-security-estimate
finance-score	Freelance finance readiness score out of 100 across six weighted areas, with each gap priced in dollars a year.	Ir: abrir la página de finance-score Ver JSON: respuesta directa de finance-score
cost-index	The Freelance Cost Index: a published monthly reading (0-10) of what running a US freelance business costs, with every component scored, weighted and sourced.	Ir: abrir la página de cost-index Ver JSON: respuesta directa de cost-index

Endpoints de utilidades

POST /api/v1/…	Qué hace	En la web
slugify	Turn a title into a URL slug (lowercase, hyphens, accents stripped).	Ir: abrir la página de slugify Ver JSON: respuesta directa de slugify
convert-case	Convert text between casings (upper, lower, title, sentence, camel, pascal, snake, kebab, constant).	Ir: abrir la página de convert-case Ver JSON: respuesta directa de convert-case
base64-encode	Base64-encode UTF-8 text.	Ir: abrir la página de base64-encode Ver JSON: respuesta directa de base64-encode
base64-decode	Decode Base64 back to UTF-8 text.	Ir: abrir la página de base64-decode Ver JSON: respuesta directa de base64-decode
url-encode	Percent-encode text for URLs and query strings.	Ir: abrir la página de url-encode Ver JSON: respuesta directa de url-encode
url-decode	Decode percent-encoded text (+ treated as space).	Ir: abrir la página de url-decode Ver JSON: respuesta directa de url-decode
html-entities-encode	Escape reserved and non-ASCII characters as HTML entities.	Ir: abrir la página de html-entities-encode Ver JSON: respuesta directa de html-entities-encode
html-entities-decode	Decode named and numeric HTML entities to text.	Ir: abrir la página de html-entities-decode Ver JSON: respuesta directa de html-entities-decode
json-format	Validate and pretty-print or minify JSON.	Ir: abrir la página de json-format Ver JSON: respuesta directa de json-format
csv-to-json	Parse CSV (auto delimiter) into an array of typed objects.	Ir: abrir la página de csv-to-json Ver JSON: respuesta directa de csv-to-json
json-to-csv	Turn a JSON array of objects into RFC 4180 CSV.	Ir: abrir la página de json-to-csv Ver JSON: respuesta directa de json-to-csv
word-count	Words, characters, sentences, paragraphs and reading time.	Ir: abrir la página de word-count Ver JSON: respuesta directa de word-count
diff	Line diff (LCS) between two texts, with counts.	Ir: abrir la página de diff Ver JSON: respuesta directa de diff
timestamp	Parse a Unix timestamp (s/ms/us) or date string into every view.	Ir: abrir la página de timestamp Ver JSON: respuesta directa de timestamp
timezone-convert	Convert a wall-clock time between IANA timezones (DST-aware).	Ir: abrir la página de timezone-convert Ver JSON: respuesta directa de timezone-convert
color-convert	Parse a color (hex, rgb(), hsl(), triplet) into hex, rgb and hsl.	Ir: abrir la página de color-convert Ver JSON: respuesta directa de color-convert
currency-rates	Daily ECB reference rates (EUR base) with their date.	Ir: abrir la página de currency-rates Ver JSON: respuesta directa de currency-rates
currency-convert	Convert an amount between currencies using ECB reference rates.	Ir: abrir la página de currency-convert Ver JSON: respuesta directa de currency-convert
convert-data	Convert a document between JSON, YAML, TOON and CSV in any direction.	Ir: abrir la página de convert-data Ver JSON: respuesta directa de convert-data
json-to-toon	Convert JSON to TOON, the token-oriented format that writes repeated object keys once.	Ir: abrir la página de json-to-toon Ver JSON: respuesta directa de json-to-toon
toon-to-json	Convert TOON back to JSON, expanding tabular rows into full objects.	Ir: abrir la página de toon-to-json Ver JSON: respuesta directa de toon-to-json
uuid	Generate random v4 UUIDs (1-100).	Ir: abrir la página de uuid Ver JSON: respuesta directa de uuid
lorem-ipsum	Generate lorem ipsum filler (paragraphs, sentences or words).	Ir: abrir la página de lorem-ipsum Ver JSON: respuesta directa de lorem-ipsum
timezone-abbreviation	Resolve a time zone abbreviation (CET, EST, JST) to its offset, region and every other meaning it has.	Ir: abrir la página de timezone-abbreviation Ver JSON: respuesta directa de timezone-abbreviation

Servidor MCP

Todos los endpoints de esta página están disponibles también como herramientas en nuestro servidor MCP remoto, sin cuenta ni clave. Guía completa de configuración MCP.

Límites

Gratis, sin clave, CORS abierto, límite blando de 60 peticiones por minuto e IP. Sin promesa de disponibilidad: si necesitas caudal garantizado, llévate los motores (van legibles en el bundle del sitio) y hospédalos tú.

Qué registramos

Las peticiones llegan a una función serverless que mantiene un contador en memoria por IP para el límite de peticiones y nada más: los cuerpos se procesan y se descartan, nunca se guardan. Las herramientas de navegador siguen siendo la opción sin servidor.