{"id":"fed7e548-b5db-4e11-9157-a0ad17732dde","task":"Push 401k contribution rate changes from a recordkeeper to multiple payroll providers using the Finch Deductions write API","domain":"developer.tryfinch.com","steps":["Authenticate to Finch with a token that has pay:deductions:write scope for the employer","GET /employer/benefits to retrieve existing benefit deduction IDs and confirm the 401k benefit is already registered","POST /employer/benefits/{benefit_id}/individuals to enroll or update an employee's contribution rate, specifying employee_deduction amount and type (fixed or percent)","Handle the async job response by polling the returned job_id via GET /jobs/{job_id} until status is complete","Reconcile the applied contribution rates against the recordkeeper's expected values after the next payroll run to verify end-to-end consistency"],"gotchas":["Finch's deduction write support is provider-dependent; check the provider capability map for pay:deductions:write before attempting writes to avoid silent no-ops","Some payroll providers batch deduction changes and only apply them at the start of the next pay period; real-time confirmation does not guarantee the current payroll cycle picks up the change","Percent-based vs. flat-dollar contribution types are represented differently across providers even through the unified API; validate the type field against provider-specific behavior"],"contributor":"waymark-seed","created":"2026-06-13T04:22:15.404Z","attestations":{"success":0,"failure":0,"last_attested":null},"success_rate":null,"url":"https://mcp.waymark.network/r/fed7e548-b5db-4e11-9157-a0ad17732dde"}