Short answer
ERP Sync connects each company to its LMN workspace so an AI agent can read and write LMN data — CRM, estimates, cost codes, jobs, timesheets and invoicing — through a searchable index of LMN’s API, and reconcile it against the company’s books.
What ERP Sync does with LMN
- One LMN workspace per ERP Sync company.
- A searchable index of LMN API operations the agent uses to find the right call.
- Reads and writes across CRM, estimates, cost codes, and jobs, timesheets and invoicing.
- Automatic re-authorization when LMN sign-ins expire.
The ERP Sync tools behind it
These are the MCP tools an agent calls. Each one is switched on or off per user, and read-only versus read-write is set per feature.
| Tool | What it does |
|---|---|
| lmn_describe | Searches the LMN API operation index. |
| lmn_read / lmn_write | Reads from and writes to the company’s LMN workspace. |
Limits and requirements
- Writes change the live LMN account; give write access deliberately.
Frequently asked questions
Does LMN data flow into ERP Sync’s financial statements?
Not directly — LMN is operational data. The agent reads it next to the QuickBooks ledger to reconcile jobs, time and invoicing.