Legacy usage
Endpoint, version, SDK, token, or workflow evidence from a read-only export.
For API providers with a retirement deadline
Know which customers are still on the old API before you shut it down.
Lumyn turns legacy usage, account ownership, blockers, and exceptions into the decision your team needs: shut down, extend, or escalate.
One retirement
10 business days after usable inputs
Read-only exports from your systems
No customer repo required
Illustrative retirement finding
Decision: hold
2019 API retirement
Example account
Northstar Systems
Priority cohort
Legacy use
Observed
→
Account
Mapped
→
Migration
Blocked
→
Shutdown
Hold
- Observed surface
POST /v2/payment-requests- Last legacy event
- 3 hours ago
- Account owner
- Customer Engineering · assigned
- Current blocker
- Webhook response mapping
- Evidence state
- Gateway event + CRM account match · customer completion unresolved
Next decision
Resolve callback parity and observe the agreed clean window before marking this account ready.
Example data only. Lumyn does not infer retirement from silence.
The completion gap
A changelog announces the change. It does not close the migration.
Gateway queries show old calls. CRM records show commercial context. Support threads explain blockers. A spreadsheet tries to hold the campaign together.
The hard question is whether every affected customer has migrated, is blocked with a clear owner, has an approved exception, or remains explicitly unresolved before the cutoff.
Customer account
Map technical identifiers to the right customer, segment, owner, and commercial priority.
Blockers and exceptions
Record what is blocking completion, who owns it, and which exception is accepted.
Shutdown readiness
Separate evidenced readiness from customer reports, unknowns, and unresolved risk.
Best fit when
You have an API retirement underway.
You own the cutoff decision but cannot confidently identify every affected customer.
- 01The cutoff is within the next 12 months.
- 02Customer or partner accounts may still use the retiring surface.
- 03Usage and account data exist, but are not reliably connected.
Fixed-scope API Retirement Readiness Sprint
Know who is still exposed—and what must happen before cutoff—typically in 10 business days.
Start with one API or SDK retirement where customer exposure is still unclear. Lumyn works from the usage data, account records, and migration tracker you already have, then returns the account-level plan needed to finish the migration and make the cutoff decision.
Bring
- One announced API or SDK retirement
- One gateway, SDK, or usage export
- One CRM or account export
- Migration guidance and the current tracker
Get
- Affected-account register
- Up to ten priority-account action plans
- One view of owners, blockers, exceptions, and unknowns
- Shutdown-readiness review and next decision
After reviewing a sample usage export and account export, we confirm the fixed scope, fee, and start date. Typical delivery is 10 business days after usable inputs are confirmed.
Scope one retirementWhat changes for the team
Move from scattered signals to a decision you can defend.
The deliverables are concrete, but each exists to answer an operating question before cutoff.
Know which accounts are still exposed
An affected-account register maps legacy evidence to accounts, owners, and commercial priority while keeping unmatched identifiers visible.
Give every blocker an owner and next action
Up to ten priority-account action plans capture the affected surface, latest evidence, owner, blocker, and next move.
Keep unknowns from becoming false green checks
A blocker and exception map keeps conflicting reports, approved exceptions, and unresolved evidence explicit.
Defend the proceed, hold, extend, or escalate decision
The shutdown-readiness brief ties the recommendation to its evidence, criteria, exceptions, and residual risk.
What stays in your control
Clear data and decision boundaries.
No customer repository required
The sprint uses read-only exports from your systems. Your gateway, observability, CRM, support, and project tools remain the sources and control points.
Unknowns and silence stay visible
Unmatched identifiers, stale evidence, and conflicting reports remain unresolved. A missing call alone does not prove safe migration.
Your team owns the shutdown decision
Lumyn prepares the evidence and recommendation. Your accountable team approves exceptions and retirement.
Customer code stays customer-controlled
Repository-specific work would require the affected customer's consent, customer-controlled access, and approval of every change.
FAQ
What provider teams ask before the first sprint.
Do you need access to customer repositories?
No. The initial sprint uses read-only exports from your systems and existing migration records. Customer repository access is not required.
What inputs do you need?
Typically: one gateway, SDK, or usage export; one CRM or account export; the migration guide; and your existing tracker or support context. CSV exports are enough to start qualification.
Does Lumyn replace API observability, CRM, or support tools?
No. Those systems remain the sources of truth and action. Lumyn connects their evidence around one retirement so the team can manage completion and make the shutdown decision.
How do you handle uncertainty?
Evidence is labeled as observed, customer-reported, or unresolved. Silence is not treated as completion, and an unknown account match is not presented as safe to retire.
Can Lumyn help with a customer's code change?
Not as part of the readiness sprint. Any repository-specific work would require the affected customer's consent, customer-controlled access, and approval of every change.
One retirement. One accountable view.