Sync every lead your AI agent captures to HubSpot

The default lifecycle of a lead from chat at most companies looks like this: the bot asks for an email when a visitor wants something the bot can’t give them. The visitor types the email. The bot says thanks, somebody will be in touch. The conversation ends. A human reads the transcript later, decides the lead is real, and creates a HubSpot contact by hand. Or — more often — the conversation is one of forty that day, the human is busy, and nothing happens.

The cost of “nothing happens” isn’t visible on a single conversation. It’s visible at the cohort level: bots that capture five hundred leads a month, of which fewer than half make it into the CRM in the first 24 hours, of which a meaningful fraction never get worked at all. SDRs blame the source. Marketing blames the SDRs. The truth is that the handoff from chat to CRM was never built — there’s a person standing between two systems that should be talking to each other directly.

When the handoff is automated, the SDR opens HubSpot in the morning and sees a list of new contacts that came in overnight, each tagged with the bot that captured them and each carrying the message the visitor left. They click into the first record, see “asked about pricing for the Pro plan, said they’re a 12-person agency in Austin,” and have everything they need to write a useful first email. The friction between “lead arrived” and “rep takes action” goes from hours of admin to seconds of context.

The bot fires events as conversations happen, and the HubSpot integration acts on two of them: a lead captured and a conversation escalated. Only lead capture is subscribed when you connect, and it creates or updates a contact. The deal and the escalation ticket are both opt-in — switch deals on and a captured lead also opens a deal associated with that contact; subscribe the escalation event and switch tickets on and an escalation opens a ticket. Here’s what those records actually look like when they land:

The message the visitor left is the part that saves your reps the most time, and it rides onto the contact itself. On a brand-new contact it lands in the message property, next to first and last name, a hs_lead_source of NEBULAHEX, and the bot’s name in chatbot_source. On a contact that already existed, the message is written to notes_last_contacted as “NebulaHex interaction (bot name): message” and the lead source is set the same way. A rep can read it in fifteen seconds and know why the visitor got in touch, rather than just their name and email.

You set up the integration once and then it runs in the background. The OAuth handshake is the only setup step, and refreshes happen automatically. From a clean start it takes under a minute.

You don’t paste an API key. You don’t generate a private app token. You don’t manage a refresh token. Disconnecting is just as fast — go back to the Integrations tab, click Disconnect, and the OAuth tokens are revoked. Your contact records, deals, tickets, and notes all stay in HubSpot exactly as they were. The integration is a write path, not a sync that owns your data.

HubSpot is the CRM most small and mid-market companies actually use. Salesforce is bigger across the broader CRM market, but HubSpot dominates the segment where small and growing businesses pick their first or second CRM — the segment NebulaHex is built for. Public reporting puts HubSpot’s customer base near 290,000 by end of 2025, and the company is widely considered the leader in marketing automation by market share.

HubSpot grew up around the inbound marketing thesis — pull customers in with content rather than push them with cold outreach — and the product reflects that. The Marketing Hub is where you run your blog, your forms, your nurture emails. The Sales Hub is where your reps work the leads those activities produce. The Service Hub is where your support team handles tickets. Each Hub shares one underlying CRM database, so the contact your bot creates is the same contact your marketer enrolls is the same contact your salesperson works is the same contact your support agent helps when they email in three months later. That continuity is the thing that makes HubSpot worth integrating against — when you write a contact to HubSpot, you’re writing it to the spine.

You can build this. Anyone can build this. The HubSpot API is well-documented, OAuth is a solved problem, and a junior engineer with a weekend can wire up a webhook listener that creates contacts. The reason most teams don’t is the long tail of edge cases that show up after the happy path is shipped:

NebulaHex ships those edge cases handled. The integration deduplicates on email by default. Outbound calls back off and retry on transient failures. OAuth tokens refresh in the background. Which records get written is a set of toggles in the dashboard rather than a change in code, so a marketing operations person can turn deals or tickets on without filing a ticket with engineering. And every write to HubSpot is paired with a corresponding bot event you can see in the conversation history, so when something doesn’t show up in HubSpot you know exactly which event was supposed to fire and what its payload was.

The HubSpot connection is OAuth 2.0. NebulaHex never sees or stores your HubSpot password. The access tokens we hold on your behalf are encrypted at rest and in transit, and they’re scoped to only the things the integration actually needs to do — typically reading and writing contacts, deals, tickets, and notes inside the portal you authorized.

You can revoke the connection from inside HubSpot at any time, and you can disconnect from the NebulaHex dashboard with a single click. NebulaHex stops sending events to HubSpot immediately, and the OAuth tokens are revoked on the next call.

Access inside your workspace is role-based. Only members of your organization with the right role can connect, modify, or disconnect an integration — viewers can see that the integration exists but can’t change its configuration. Every change to integration settings is logged so you can see who connected what and when.

Your data is yours. The conversations your bot has with your visitors are not used to train AI models. The contact data that flows from those conversations into HubSpot belongs to your HubSpot portal and is governed by your portal’s data retention and privacy settings. See our privacy policy and terms for the full posture.

Set the integration up once and your sales, marketing, and support teams stop doing the data-entry work that’s been quietly costing them their best hours of the day. Every lead the bot captures becomes a HubSpot contact carrying the visitor’s message. Subscribe the escalation event and turn tickets on, and every escalation becomes a ticket. Turn deals on and a captured lead also opens a deal a rep can pick up — the deal hangs off the contact, so with contact creation switched off only leads whose email is already in your portal get one.