The SIGNLD extension for Claude: CPA and professional services
The SIGNLD extension for Claude lets accounting and professional services firms ask billing, realization, and utilization questions inside a Claude session, with every figure traced back to the practice management, time and billing, or accounting record it came from.
In this article
- Who this is for
- Scenario 1: Realization rate by partner
- Scenario 2: Scope creep hours on a fixed-fee engagement
- Scenario 3: Accounts receivable aging
- Scenario 4: Budget versus actual on an engagement
- Scenario 5: Staff utilization this month
- Scenario 6: Write-off risk before month end
- Permissions and data access
- FAQ
Who this is for
This is for managing partners, firm administrators, engagement managers, and finance staff at CPA firms, law firms, and other professional services businesses who track time, bill by engagement, and need answers that hold up when a partner asks "where did that number come from." The SIGNLD extension for Claude connects to the systems a firm already runs, such as a practice management tool, a time and billing system, and QuickBooks Online, and puts that context inside a Claude session so a question about realization or scope does not require opening three different applications first.
The SIGNLD extension for Claude is built and maintained by SIGNLD using Anthropic's publicly available extension interfaces. SIGNLD is not affiliated with, sponsored by, or endorsed by Anthropic. The business context behind each answer, meaning the entities, metrics, and relationships pulled from connected systems, is the same Knowledge Graph layer SIGNLD uses everywhere else, not a separate model built just for Claude sessions.
Every answer below stays read-only against the connected systems. Nothing in a Claude session with the extension writes back to a time and billing system, a practice management tool, or QuickBooks Online, and every figure a grounded answer states can be traced to the record it came from.
Scenario 1: Realization rate by partner
A managing partner asks Claude, inside a session with the extension connected, what realization rate looks like by partner for the current month. A general assistant without a connection to the firm's systems can define realization rate and describe what typically drags it down, but it cannot state the firm's actual number because it has no access to billed hours, standard rates, or write-downs.
With the extension connected to the firm's time and billing system, the answer draws on billed amounts against standard rates by partner and engagement, and it can cite the specific engagements where write-downs pulled the rate below the firm's target. The answer names the partner, the engagement, and the billing record behind each figure, so a follow-up question about why one partner's number moved does not require pulling a separate report.
Scenario 2: Scope creep hours on a fixed-fee engagement
An engagement manager asks which fixed-fee engagements have logged more hours than the original scope estimated. This question needs two systems talking to each other: the practice management tool, which usually holds the original scope and budget for the engagement, and the time and billing system, which holds actual hours logged against it.
A grounded answer names the engagement, the budgeted hours from the practice management record, the actual hours logged in the time and billing system, and the gap between them, described as scope creep hours. It does not estimate a dollar impact unless the firm's own billing rate is applied to that gap and the calculation is shown, and it never states a number the connected systems do not support. This is one of the clearest cases where a scope creep question needs a source record, not a guess, behind it.
Scenario 3: Accounts receivable aging
A firm administrator asks which clients have invoices aging past 60 days. Connected to QuickBooks Online, the extension can pull open invoices by client, their age buckets, and the original invoice date, and present the ones past a threshold the administrator specifies.
The answer names the client, the invoice number, the invoice date, and the days outstanding, all traceable to the QuickBooks Online record. It does not infer why a client is slow to pay unless the firm has notes or a status field recorded somewhere the extension can read; it states what the aging report shows and stops there.
Scenario 4: Budget versus actual on an engagement
A partner reviewing a client relationship asks whether a specific engagement is running over or under its original budget. This draws on the practice management system for the budgeted hours and fee, and the time and billing system for hours logged and amounts billed to date.
A grounded answer compares the two, cites both source records, and states the variance in hours and in billed amount as recorded, without projecting where the engagement will land at completion unless the firm has a defined method for that projection already in one of the connected systems.
Scenario 5: Staff utilization this month
A firm administrator asks what utilization looks like by staff level for the current month, meaning billable hours against total available hours. The time and billing system holds both the hours logged against client engagements and the hours logged to non-billable or internal categories.
The answer states utilization by staff level as calculated from those logged hours, names the staff members or level grouping used, and can be filtered to a specific office or practice group if the firm's system tracks that distinction. It does not compare the firm's utilization to an industry benchmark, because no connected system contains that external number. If the firm tracks a target utilization rate somewhere in a connected system, the answer can compare actual utilization to that internal target, but it will not invent a benchmark from outside the firm's own records.
Scenario 6: Write-off risk before month end
Ahead of month-end close, a managing partner asks which engagements or invoices look like write-off candidates. This draws on unbilled work-in-process aging in the practice management or time and billing system, and on receivable aging in QuickBooks Online, to surface engagements where recorded value has sat unbilled or uncollected past the firm's own threshold.
The answer lists the specific engagements or invoices, their age, and the recorded value at risk, with each figure traced to its source record. The decision to actually write anything off stays with the partner; the extension surfaces what the connected systems show and does not recommend a write-off amount on its own.
Permissions and data access
The SIGNLD extension for Claude only sees what the firm's SIGNLD account is already connected to and permitted to read. If a staff member's SIGNLD access does not include a particular client's engagement data, the extension does not surface it inside their Claude session either; permissions carry over rather than getting reset at the extension boundary.
All connections, whether to a practice management tool, a time and billing system, QuickBooks Online, or another accounting system, are read-only. The extension never creates, edits, or deletes a record in a source system, and it never posts a journal entry, adjusts an invoice, or changes a time entry on its own. Every figure a grounded answer states can be traced back to the specific record it came from, so a partner can check the number before it goes into a client conversation or a partner meeting.
Details on Claude's own session behavior, including how extensions are enabled and what a user can see about an active connection, live at docs.anthropic.com because those details change on Anthropic's schedule, not SIGNLD's.
Related reading in this series: The Knowledge Graph layer for AI assistants and Claude with SIGNLD vs Claude alone: the same question, two answers.
Key takeaways
- A managing partner asks Claude, inside a session with the extension connected, what realization rate looks like by partner for the current month.
- A firm administrator asks which clients have invoices aging past 60 days.
- A firm administrator asks what utilization looks like by staff level for the current month, meaning billable hours against total available hours.
- The SIGNLD extension for Claude only sees what the firm's SIGNLD account is already connected to and permitted to read.
- The extension answers from what the connected system currently shows.
FAQ
Does the extension work with any practice management or time and billing system?
It works with the systems a firm has already connected to SIGNLD. Practice management and time and billing coverage depends on SIGNLD's current integration list, which changes as new connections ship, so the specific systems supported are best confirmed against the current list rather than assumed.
Can the extension calculate realization rate if my firm defines it differently than another firm?
Yes, as long as the firm's definition, such as which write-downs count against realization, is reflected in how the connected systems record billed amounts and standard rates. The extension answers from the firm's own records, not a generic industry formula.
Will this replace our practice management or billing software?
No. The extension does not replace practice management, time and billing, or accounting software. It reads from those systems and puts the resulting context inside a Claude session so a question can be answered without opening each system separately.
Can a client-facing team member see another partner's engagement data through the extension?
No. The extension respects the same permissions already set in the firm's SIGNLD account. A user only sees what their existing access allows, whether they are asking through SIGNLD directly or through a Claude session with the extension connected.
What happens if the underlying practice management or billing record is wrong?
The extension answers from what the connected system currently shows. If a time entry or budget figure is wrong in the source system, the grounded answer will reflect that error and cite the record, which makes the error easier to find and correct at the source rather than harder to trace.
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Claude and Anthropic are trademarks of Anthropic. Used descriptively only.