CRM drift is a cross-record problem. The company description says one thing, the deal notes say another, and the contact titles use four conventions, none of them yours. Fixing it record by record never converges, because the fix for any one record depends on what the others say. That is the shape of job Grok Build is unusually good at: a 2 million token context holds a large slice of your book of business at once, so record 4,000 gets normalized against the same picture as record 4. And plan mode writes out the whole pass before a single field changes.
The reason you have not run that pass is the CRM itself. Your team works in it, reporting and workflows run on it, and most ways of wiring AI to HubSpot write straight to it. Scratch changes where the edit happens. The CRM comes down as a folder of files on your laptop, Grok Build does 99% of the work there, and the last 1%, what actually writes back, stays with you. Every changed field is a diff you approve before Scratch sends it through the HubSpot API.
How it works
- Scratch pulls your CRM into files. Contacts, companies, deals, tickets, and the rest come down to a folder on your laptop, one file per record, with an
AGENTS.mddescribing the objects and fields, which Grok Build picks up automatically. - Grok Build plans, then edits.
cdinto the folder, rungrokin plan mode, and describe the hygiene pass. Standardize every company description, align deal notes with the company record, normalize contact titles. Read the plan, approve it, and Grok Build works the files with the whole slice in context. It edits the files, never the live CRM. - You review every diff and publish. Scratch shows each changed field next to the original, word by word. Approve what ships, and Scratch writes only those records back through the HubSpot API.
What people use it for
The hygiene work that needs the whole CRM in view to come out consistent:
- Standardize company descriptions across every account, in one voice.
- Align deal notes with what the company and contact records actually say.
- Normalize job titles, industries, and picklist-shaped text fields so filters and reports behave.
- Fill missing fields by reading the record's own notes, calls, and meetings.
- Reconcile custom-object copy that drifted across teams.
Plan a pass over one object first. When the plan reads right, run the book.
Why not an MCP server?
A HubSpot MCP server or app hands the agent a live line to your CRM, write button included. One confident pass rewrites records while the workflows watching those fields fire in real time, and your reporting drifts before anyone has read a change.
Scratch gives Grok Build the same full read and write against a local copy. The write-back is lifted out of the agent loop and handed to you, record by record. Grok Build can change anything in the files. Only you can commit it to the CRM your company runs on.
What Grok Build edits in HubSpot
- Contacts and companies
- Deals, tickets, quotes, and line items
- Notes, tasks, calls, and meetings
- Custom objects, plus the associations between contacts, companies, deals, and the other standard objects
Workflows, lists, and Marketing Hub assets stay where they are. Emails come down for context, and any table you never want written can be marked read-only, so Scratch never pushes changes to it. Fields HubSpot itself declares read-only are refused at write-back. For the full picture, see Scratch for HubSpot.
Questions people ask
Is this an MCP server or a HubSpot app?
Neither. Both give the agent the write button to your live CRM. With Scratch, Grok Build edits a local copy, and writing back is a separate step you approve, one record at a time.
Will it touch my workflows or lists?
No. Workflows, lists, and Marketing Hub assets are never part of the sync. Grok Build edits records and the associations between standard objects, and you can mark any table read-only so Scratch never pushes changes to it.
Will editing records fire my automations?
Edits in the local copy fire nothing. When you approve a record, Scratch writes it back like any CRM update, so a workflow watching that field can fire, the same as a hand edit. The difference is that you choose which records write back, instead of one bulk pass tripping every workflow at once.
What does plan mode add before a CRM-wide pass?
A gate in front of the edits. Grok Build writes out which objects, which fields, and what kind of change before it touches a file, so a misread instruction dies as a plan, not as ten thousand edited records. The Scratch diff then gates the write-back.
Can I undo a change after it writes back?
Yes. Every written record is reversible from Scratch, per row. The original sits next to the rewrite until you decide which one stays.
Do I need to be technical?
You need to be comfortable in a terminal, since that is where Grok Build lives. If your RevOps work happens outside one, the Claude desktop app runs the same Scratch loop with a more familiar surface.
See it on your own CRM
The fastest way to trust it is to watch it run on your records. Book a 30-minute demo on your HubSpot CRM →, or try Scratch free and run the first pass yourself.