One trigger
Webhook, schedule, form, or one defined source event.
N8N DEVELOPER / FIXED SCOPE / ASYNCOne workflow.
One workflow.
Built to fail clearly.
For teams that need a webhook or API workflow built, tested, and handed back without an open-ended consulting engagement.
First contact is scope only. No files, secrets, credentials, screenshots, or customer data.
THE CEILING IS THE PRODUCTSmall enough to quote.
Small enough to quote.
Complete enough to run.
Scope expansion is separated before work starts. The fixed price does not silently become a discovery retainer.
Eight main steps
Validation, transformation, routing, API calls, and the principal failure path.
Three services
n8n plus up to three connected services. Provider fees remain separate.
Evidence included
Workflow export, configuration map, acceptance tests, operations and recovery notes.
PUBLIC SYNTHETIC EVIDENCEInspect behavior,
Inspect behavior,
not a logo wall.
The published artifacts are synthetic labs—not client deployments or testimonials. They make the workflow, measured cases, limitations, and checksums inspectable.
N8N 2.33.7 / ISOLATEDMEASURED
- retry
- 503 → 503 → 202 PASS
- duplicate
- no second create PASS
- unknown ref
- 422 / no total PASS
- claimed price
- ignored PASS
- partial publish
- retry failed channel only PASS
CONTROL BOUNDARY
Production remains yours.
No publishing, sending, charging, or high-stakes decision is activated without a human approval gate.
Before implementation
- Outcome, inputs, outputs, exclusions, and acceptance cases agreed in writing
- Credentials and customer data excluded from the first email
- Scoped access and test data shared only after agreement
Outside the fixed pack
- More workflows, services, or steps than the ceiling
- 24/7 monitoring, on-call support, or open-ended maintenance
- Medical, legal, investment, or other high-stakes automated decisions
CHOOSE THE NEXT DECISIONBroken workflow,
Broken workflow,
or missing workflow?
Existing workflow
Written P0–P3 findings, repair order, and acceptance tests in three business days.
JPY 38,500Send the 60-second briefNew bounded workflow
Build, test, export, and written operations handoff under the fixed ceiling.
JPY 132,000Open a scoped inquiryAn inquiry does not create a contract. Scope, exclusions, payment route, start date, and acceptance conditions are agreed in writing first. Sales terms (English reference), statutory disclosure (Japanese), and privacy terms (Japanese).