Sage 100 Contractor MCP server: connect Sage 100 Contractor to Claude and ChatGPT

Sage 100 Contractor keeps its data in a database. The small Junction agent runs on the same network, reads it with a login that can only read and connects outward to Junction, so no inbound firewall port is opened.

• “Which jobs have costs ahead of billings?”
• “What is the job-cost summary for every open job?”
• “Which subcontractors are owed retention?”

Answers come from your own system, with the source rows and the time the data was last updated.

• Sage 100 Contractor is widely used (markets: United States) and readable without writing to it. We build each mapping from the vendor's own reference and check it with a customer who runs the system.
• Integration routes found in our research: SQL (direct DB).
• When we researched this in October 2026 we found no MCP server from the vendor.
• Payroll and personal data are denied by default.

Is there an MCP server for Sage 100 Contractor?

Yes. Junction is an MCP server that connects Sage 100 Contractor to Claude and ChatGPT. We set it up with you and check the answers against your own reports.

How does Junction connect to Sage 100 Contractor?

As described above, with access that only reads, and with answers checked against your own reports. Tell us you run Sage 100 Contractor and we will set it up with you.

Can the AI change anything in Sage 100 Contractor?

No. Junction cannot create, edit or delete a record.