Guide
We checked 264 business tools for a Claude connector. Most have none.
We catalogued the business software teams actually ask Claude to act inside, then checked the real state of each tool's connector as of June 2026. The coverage gap is wider than it looks.
As of June 2026, across 264 business tools teams want Claude to work in, 203 of them, or 77 percent, have no connector at all. The other 61 all have a read-only, shallow, or third-party connector, and not one ships full read-write out of the box. The gap is total in vertical, ERP, and custom software.
Key takeaways
- We catalogued 264 business tools and checked each one. 203, or 77 percent, have no Claude connector at all.
- The 61 tools that do have a connector are all read-limited, directory-basic, or third-party. None do full read-write.
- In vertical software, ERP and operations, and custom or in-house tools, the gap is total: every tool we checked has no connector.
- Even the best-covered category, storage and files, still leaves more than a third of its tools with nothing.
How many business tools actually have a Claude connector?
Of 264 business tools we catalogued, 203 have no Claude connector at all. That is 77 percent. The remaining 61 split into read-limited, directory-basic, and third-party connectors, all of which stop short of full read-write. By this count, no tool ships a connector that lets Claude both read and safely write out of the box.
We grouped each tool by the state of its current connector. The split looks like this:
- No connector at all: 203 tools, 77 percent. Nothing exists to connect Claude to the tool.
- Read-limited: 27 tools, 10 percent. A connector exists, but it reads or does very little.
- Directory-basic: 18 tools, 7 percent. A listed connector exists, but it stays shallow.
- Third-party only: 16 tools, 6 percent. The only option is a third-party or data-vendor connector.
The headline is the first line. For more than three-quarters of the software teams actually run, there is no way to connect Claude to it without building one. And for the quarter that have something, the something is partial.
Does any tool ship a full read-write connector?
No. Across all 264 tools, not one ships a connector that gives Claude full read-write access out of the box. The 61 tools with a connector are read-only, shallow, or third-party. Full read-write, where Claude can update records and take actions with your approval, is something you build, not something you turn on.
This is the gap the whole catalog points at. A connector that only reads is useful for answering questions, but it cannot do the work: update the deal, draft and send the reply, create the ticket, log the activity. The moment you want Claude to act, a read-only or shallow connector runs out.
What full read-write means here
Separate read and write tools, scoped to your account's permissions, with destructive actions like delete and send gated behind a confirmation you approve. That is the bar none of the 264 tools clear on their own.
Which categories have the biggest connector gap?
The gap is total in vertical and industry software, ERP and operations, and custom or in-house tools: every tool we checked in those categories has no connector. It is smallest in storage and files. The tools where Claude is most useful for doing work, like CRM, project management, and help desk, sit in the middle, mostly missing or limited.
Sorted by how many tools have nothing at all, the gap is widest here:
- Vertical and industry software: 28 of 28 have no connector.
- ERP and operations: 11 of 11 have no connector.
- Custom and in-house: 5 of 5 have no connector.
- E-commerce: 15 of 16. Forms and surveys: 10 of 11. E-signature: 9 of 10.
- Marketing: 18 of 21. HR and payroll: 13 of 15. Accounting and finance: 14 of 17.
Even the best-covered category is not well covered. Storage and files, the strongest, still leaves 4 of its 11 tools with no connector, and the rest are not full read-write. The work tools matter most: CRM (10 of 18 missing), project management (12 of 21), help desk (9 of 13), and email (11 of 18) are exactly where teams want Claude to act, and exactly where the existing connectors fall short.
Why do so many business tools have no connector?
Most business software lives in the long tail. Vertical platforms, ERPs, and in-house systems each serve a slice of one industry, so no one ships a general connector for them. Even mainstream tools tend to get a read-only or directory connector first, because reading is easier and lower risk than writing. Full read-write is the work nobody does by default.
The catalog skews toward that long tail. The largest groups are vertical and industry software (28 tools), databases and data (23), project and work management (21), and marketing (21). These are not the handful of apps everyone integrates. They are the specific systems a given team runs, which is exactly the software a general connector directory skips.
The pattern holds for the mainstream tools too. When a connector does exist, it usually started as read-only, because reading data is lower risk than writing it. Adding safe write access, with the right actions and a human in the loop, is a separate and larger piece of work, so it rarely ships by default.
What does it take to close the gap for a specific tool?
Closing the gap means building a custom connector for the one tool you run: separate read and write tools mapped to its real API, authenticated as your own account, with destructive actions gated behind your confirmation. It is scoped to the actions you need, not a generic set, so Claude can do the actual work in that tool rather than just read from it.
Whether a tool sits in the 77 percent with nothing or the 23 percent with a limited connector, the fix is the same shape: a connector built and maintained for your tool, with full read-write and human-in-the-loop controls on the risky actions.
How we counted
We catalogued the business tools teams ask us to connect Claude to, then classified each tool's current connector as none, read-limited, directory-basic, or third-party, based on what exists publicly as of June 2026. The set is business software, not consumer apps, and it grows as we add tools.