Here’s a number that explains why we care about this: law firms miss roughly 28% of inbound calls — the second-worst rate of any industry we’ve measured, behind healthcare — and unanswered phones account for about half of the cases that quietly never happen.
Catching those calls is the part everyone thinks about. But the next part is that the critical details (caller name, injury type, accident date, and insurance) have to land somewhere. If a paralegal has to type notes into your case management software, data entry is now what’s slowing down client communication.
That handoff depends on how open your case management platform is to the other software in your stack. Answering that is an engineering question. So we evaluated three common platforms for small and mid-sized PI firms the way we’d evaluate any software: not “what does it do,” but “how hard is it to build against.”
Why “how hard is it to build against” is your problem, not your IT vendor’s
Every tool you add over the next five years (intake, e-signature, attribution, records retrieval, AI anything) has to talk to your case management system. Four things determine whether that’s a two-week project or a two-quarter project, and each has a consequence you’ll feel at the front desk.
1. Can a developer start building today, or do they need permission first?
Some platforms let a developer create credentials and start testing immediately. Others require an application, a review, and an approval before anyone writes a line of code. A third pattern is becoming more common: API access is sold as a feature of a higher subscription tier.
Why you care: when you buy a new tool, the clock starts on someone else’s approval queue. “We can connect to your case management system in a week” quietly becomes “in a week, once their partnerships team gets back to us”. You have no leverage over that timeline. Gated access also thins out your options: fewer vendors bother building, so you get fewer choices and less competitive pricing. And if API access sits in a premium tier, the real price of the platform is the tier that has an API, not the one on the pricing page you were shown.
2. Is the documentation complete?
Documentation is the instruction manual for connecting other software. Gaps don’t show up on day one; they show up in month three.
Why you care: undocumented gaps are the single most common source of “this will take a few more weeks” on integration projects. Overruns get billed to you, not to the platform. Worth asking separately: does the vendor support integration work at all, or do they hand you off to an outside consultant you’ll be paying?
3. Does it push updates out, or do other tools have to keep asking?
“Webhooks” means the platform announces changes the moment they happen: this case was just updated. Without them, other tools have to check in periodically and hope they catch it.
Why you care: this is the difference between your intake tool creating the matter the instant the call ends and a sync that runs every few hours. It’s also why staff quietly stop trusting software. If case status in one system can be stale until lunchtime, everyone goes back to asking each other.
4. How many other integrations exist?
Why you care: someone else already hit the bugs. A crowded ecosystem means the tool you want in 2027 probably already has a working connector, instead of a custom build quoted at your expense.
How Clio, MyCase, and PracticePanther score
Grades reflect integration readiness only — not overall product quality, and not price. A = minimal friction, B = workable with a delay, C = plan around it.
| Clio | MyCase | PracticePanther | |
|---|---|---|---|
| Start building today? | B+ — developer portal account is self-serve; API access starts as a 7-day trial, and continued free access requires an application Clio approves. No separate sandbox — you test against a developer or trial account. | C+ — the API is publicly documented, but access is gated to the top subscription tier and credentials come from support rather than a signup form. Your redirect URI can only be set or changed by MyCase support. | C — access is granted case by case after you contact support or partnerships with details on your app, data needs, and security practices. |
| Documentation | A — most complete of the three, with a public developer handbook. | B– — solid on cases, contacts, and documents, but MyCase doesn’t support API implementations directly; it refers firms to outside certified consultants. | B — publicly browsable, and enough to scope work before you have credentials. |
| Real-time updates | A– — broadest event coverage of the three. | B — webhook subscriptions are documented, including endpoints to create and cancel them. Confirm coverage for the specific events your vendor needs. | B– — webhooks exist; event coverage is narrower. Confirm what’s included at your plan level. |
| Ecosystem size | A — the largest integration ecosystem in the category by a wide margin; most legal tech vendors build for Clio first. | B — meaningful, and notably strong on payments through the AffiniPay/LawPay relationship. | B– — smaller, so more of your future tools will need custom work. |
Sources: Clio developer docs · MyCase API documentation · MyCase Open API support article · PracticePanther API access. Verify current terms before you build.
The most useful thing on this table isn’t a grade, it’s the tier gate. If you’re quoting MyCase against Clio, make sure you’re quoting the MyCase plan that actually includes API access. That’s frequently not the plan in the proposal.
So which one should you buy?
Case management software is more than just API design. Integration readiness is one factor among several, but it’s the only one on this list that nobody is scoring for you, and it’s the one that shows up as a surprise cost after you’ve signed. Here’s how we’d weight it against everything else.
Go with Clio if you’re 5–10 attorneys and expect to add more than one or two tools over the next few years. The ecosystem is the premium & point: the tool you want later probably already connects, and you won’t be the first firm to try.
Go with MyCase if you’re solo to five attorneys and payments and trust accounting are your daily pain. The AffiniPay/LawPay relationship is a genuine advantage there. Just price the top tier, not the middle one, if integration is anywhere in your plans.
Go with PracticePanther if price is the binding constraint and your stack is going to stay small. It’s a capable system at a lower number — just budget lead time for any integration and ask your other vendors whether they’ve built against it before, because fewer of them have.
Don’t switch at all if you already run one of these and the only reason to move is integration. Ripping out a case management system is one of the most disruptive things a firm can do to itself. The five questions below are almost always cheaper than the migration.
Questions to ask on your next demo
Ask for answers in writing. Any vendor whose integration story is real will answer all five in one email.
- Can a developer get working API credentials without a partnership agreement or approval process? How long does it take in practice — and which subscription tier is it included in?
- Do you support webhooks, and can I see the full list of events? (Specifically: new matter, matter status change, new contact, new document.)
- Which of these are gated behind a higher plan or partner tier?
- How do new integrations work?
- If I leave in three years, how do I get my data out, and in what format?
We integrate case management systems, so we end up reading a lot of developer documentation. If you’re mid-evaluation and want a second set of eyes — or want to see your own intake criteria run against your live phone traffic — book a 15-minute demo.
Part II covers how firms can adjust their workflows to get more value from their tools.