Karbon is practice management and collaborative work software built for accounting firms and professional services teams. An unofficial API lets you programmatically pull clients and contacts, work items and tasks, client requests, emails, and templates—and push new engagements, tasks

Karbon is a cloud platform for accounting practice management and collaborative work. It centralizes email, tasks, client communication, work templates, and planning so teams can run engagements end-to-end with transparency and accountability. Firms use Karbon to triage email, manage work items and checklists, send client requests and track responses, coordinate staff workloads, standardize processes with templates, and report on time and budgets.
Core product areas include:
Common data entities:
Accounting and assurance teams rely on Karbon daily, but converting portal-first workflows into API-driven automation is nuanced:
Supergood reverse-engineers authenticated browser flows and network interactions to deliver a resilient API endpoint layer for your Karbon tenant.
Book a 30-minute session to confirm your modules, licensing, and authentication model.
We deliver a hardened Karbon adapter tailored to your workflows and entitlements.
Go live with continuous monitoring and automatic adjustments as Karbon evolves.
Authentication
/sessionsEstablish a session using credentials. Supergood manages MFA (SMS, email, TOTP) and SSO/OAuth when enabled. Returns a short-lived auth token maintained by the platform.
Authentication
/sessions/refreshRefresh an existing token to keep sessions uninterrupted.
Work
/workList work items (engagements) with filters and summary details.
Client Requests
/work/{workId}/client-requestsCreate a client request group with items, due date, and messaging.
Tasks
/work/{workId}/tasks/{taskId}Update task assignments, dates, status, and checklist details.
Emails
/emailsList email threads/messages with filters and linkages to work items.
- Create client request groups from your audit program and track responses - Ingest attachments and comments as structured evidence with checksum validation - Drive reminders and escalation based on due dates and SLA rules
- Spin up work items from standardized templates for audits, reviews, or compliance checks - Sync task assignments and due dates to your platform - Maintain status transitions (planned, in progress, waiting on client, completed) in lockstep
- Mirror relevant email threads and link them to engagements to preserve audit trail - Extract approvals and decisions from email and timeline comments - Attach artifacts and notes directly to work items
- Surface workload and due-date risk for audit teams - Trigger alerts for overdue client requests or blocked tasks - Feed utilization/budget signals to your compliance analytics
- Link engagements to accounting systems (e.g., QuickBooks, Xero) via your platform - Track time and budget consumption where enabled - Normalize client/org records across systems and avoid duplication
Authentication
Username/password with MFA (SMS, email, TOTP) and SSO/OAuth where enabled; supports service accounts or customer-managed credentials
Response format
JSON with consistent resource schemas and pagination across modules
Rate limits
Tuned for enterprise throughput while honoring customer entitlements and usage controls
Session management
Automatic reauth and cookie/session rotation with health checks
Data freshness
Near real-time retrieval of work, tasks, client requests, emails, contacts, and templates
Security
Encrypted transport, scoped tokens, and audit logging; respects Karbon role-based permissions
Webhooks
Optional asynchronous delivery for long-running workflows (e.g., client request responses, work status changes)
Latency
Sub-second responses for list/detail queries under normal load
Throughput
Designed for high-volume engagement data sync and client request processing
Reliability
Retry logic, backoff, and idempotency keys minimize duplicate actions
Adaptation
Continuous monitoring for UI/API changes with rapid adapter updates
Supergood supports workflows across commonly used modules such as Work Management (Work Items, Tasks, Templates), Client Communication (Email, Client Requests), and People & Organizations (Clients, Contacts), subject to your licensing and entitlements. We scope coverage during integration assessment.
We support username/password + MFA (SMS, email, TOTP) and can operate behind SSO/OAuth when enabled. Sessions are refreshed automatically with secure challenge handling.
Yes. We can normalize client requests, work items, tasks, and time/budget signals to match your GRC or ERP/accounting schema (e.g., QuickBooks, Xero) and deliver updates via webhooks or polling while complying with rate and permission constraints.
Yes. We support downloading approval artifacts and uploading attachments via signed uploads, with checksum validation and time-limited URLs. Approval states and sign-off requirements are modeled explicitly in our normalized responses.