NetSuite OAuth 2.0 M2M Setup

NetSuite is sunsetting SOAP. M2M OAuth 2.0 is the path forward. It's harder than it looks — and it's breaking integrations across the NetSuite ecosystem right now.

Why M2M is breaking teams

Most consultants still treat this like the old SOAP handoff — configure the NetSuite side, hand over credentials, assume the receiving side can take it from there. That worked under TBA. It doesn't work under M2M.

The consuming developer now has to handle PS256 JWT signing, cert management, token exchange, and debugging 401 INVALID_LOGIN errors that tell them nothing about what actually broke.

We've watched lead developers at major integration companies struggle through this for weeks.

What's different about how we work

We own the working connection end-to-end. Both sides.

NetSuite configuration and consuming-application setup and a tested, authenticated call before we leave.

Not "here are credentials, good luck."

What's included

  • NetSuite integration record, role, and permission configuration
  • Certificate generation and secure handoff (PS256 keypair)
  • Working reference implementation in your language (Node, Python, others available)
  • Pre-configured Postman collection pointed at your tenant with a JWT pre-request script
  • Paired debugging session — we sit with your developer until the authenticated call succeeds
  • 401 INVALID_LOGIN diagnostic runbook: cookie header interference, empty POST body rejection, stale token behavior, sandbox vs production gotchas
  • Handoff documentation your team can maintain

Engagement options

Done-for-you

$3,500–$5,000 flat

1–2 weeks delivery

We handle it end-to-end. Both sides. You get a working, authenticated call and the documentation to maintain it.

Guided

$2,000–$2,500 flat

Your team drives

Your developers keep ownership. We pair on the hard parts — JWT signing, cert handling, 401 diagnosis — until it works.

Who this is for

  • Companies with NetSuite integrations breaking as SOAP sunsets.
  • New integrations being built on M2M from the start.
  • iPaaS customers (Boomi, Celigo, Workato) whose NetSuite-side auth isn't working and needs someone who specializes.
  • Development teams that have been stuck on 401s for more than a day.

Stuck on 401s? Let's fix it.

Twenty minutes on the phone is usually enough to tell you whether this is a connection issue, a config issue, or something stranger. Either way, you'll leave with a direction.