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New: a free website for your business, live in 48 to 72 hoursWorkflow automation on n8n and Claude, built for your businessFixed price, agreed before we start · Live in 5 to 10 business days30-day money-back guarantee on every planProfessional firms · Agencies · E-commerceYou own every workflow, in your own n8nClaude API: your data is not used for trainingHuman approval on every sensitive stepFree automation audit, no obligation
PURIST
30 days
Money-back window
14 h/wk
Modeled time saved
99.97%
Uptime SLA
< 7 days
Deploy time
PURIST AI
Claude Opus 4.7 · n8n v1.71 · <80ms
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Data
Intermediate

Data transformation

Modifying data as it flows through an automation reformatting dates, concatenating strings, converting currencies, parsing JSON. Every production workflow transforms data at least once.

Expert insight

Transformation logic is where most workflow bugs hide, not in the trigger or the API call, but in the step that reformats a date, splits a name, or converts a currency string to a number. These steps deserve the same testing rigor as the "real" actions around them, with real edge-case inputs (empty strings, unexpected formats), not just the one sample record used to build the workflow.

In a real workflow

Phone numbers from a form are converted to E.164 format before being sent to the SMS provider.

Common mistakes

  • Transforming data in several places, so the same field ends up formatted differently.
  • Losing the original value, which makes debugging hard.

Complexity level

Intermediate

Requires some familiarity with automation concepts.

Quick facts

Category Data
Level
Intermediate

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