How to Connect HubSpot to Codex
Query your HubSpot data directly from Codex using Sequel’s MCP server. Ask questions in plain English, with no SQL, no dashboards, and no context switching.
Short answer
Connect HubSpot to Sequel, then add Sequel's MCP server to Codex using the config on this page. Codex can then query your live HubSpot data in plain English, with no connector code and no CSV exports. Both steps take a few minutes.
Everything you can ask Codex about your HubSpot data.
Ask in plain English — Sequel translates it into a HubSpot query, runs it, and Codex hands back the answer. No SQL, no dashboards, no CSV exports.
- How many open deals do we have, broken down by stage and owner?
- What's the win rate by lead source for deals closed this quarter?
- Show me deals over $50k that have been in 'Proposal Sent' for more than 30 days.
- Average time-to-close for deals in the Enterprise pipeline this year.
- Which companies in the Healthcare industry have no contacts in 'Lifecycle: Customer'?
How it works
Three steps to get started
Connect HubSpot to Sequel
In your Sequel dashboard, go to Connections and add HubSpot. Sequel handles authentication and schema discovery automatically.
Add Sequel to the agent
Copy the Sequel MCP configuration into Codex's settings file (shown below). Swap in your API key from Settings → API Keys.
Ask Codex about your data
Restart Codex and start asking questions. "How many open deals do we have, broken down by stage and owner?" — and get a real answer backed by live HubSpot data.
Why Codex
What Codex does with your HubSpot data
Grounded answers from real data
Codex with Sequel queries your actual databases before generating code or explanations. Every schema reference, column name, and data shape is verified against what's really there.
Terminal-native data access
No context switching — Codex can pull database data mid-session to inform code generation, write migrations based on actual schemas, and validate assumptions without leaving the terminal.
Agentic data workflows
Codex's multi-step agent can chain Sequel tool calls together: discover schema, sample data, run analysis, then generate code — all in one automated flow.
Configuration
Add Sequel to Codex
Place this in ~/.codex/config.yaml and replace sql_your_api_key with a key from Settings → API Keys.
~/.codex/config.yaml
mcp_servers:
sequel:
type: http
url: https://api.sequel.sh/mcp
headers:
Authorization: "Bearer sql_your_api_key"Install
Install HubSpot MCP in Codex
Pick your app and Sequel installs itself: a one-click link where the client supports it, that client’s own few steps where it doesn’t. Every route signs in with your Sequel account over OAuth, so there is no API key to copy and nothing to keep in sync.
Already have an MCP client?
https://api.sequel.sh/mcp
Add it as a remote (streamable HTTP) server and sign in when prompted. Skills come with it; nothing else to install. Manual setup per client
Add Sequel to Codex
Terminal
codex mcp add sequel --url https://api.sequel.sh/mcp
- 1Run the command in your terminal. It writes the server to ~/.codex/config.toml.
- 2Run codex mcp login sequel and sign in in the browser.
- 3Start Codex and ask a question.
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Tell your Grok bot to add Sequel and it can query every database and marketing tool you've connected.
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Give Meta's Muse one message and it builds its own connector to every source you've put in Sequel.
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Add Sequel once in ChatGPT and your dot can answer data questions on its own, day and night.
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Frequently asked questions
How do I connect HubSpot to Codex?
You need two things: (1) connect HubSpot to Sequel in your Sequel dashboard under Connections, and (2) add the Sequel MCP config to Codex using the setup shown above. Once both are done, Codex can query your HubSpot data directly.
What HubSpot data can Codex access?
Codex can access any data available through your HubSpot connection in Sequel. Use Sequel's search tool to discover available metrics and dimensions, then execute queries to pull the data you need.
Is my HubSpot data sent to Codex's servers?
Query results are returned to Codex as context within your conversation. Only the data you explicitly ask about is retrieved. Sequel never stores your query results permanently — they exist only for the duration of the tool call.
Do I need a Sequel account?
Yes. You need a Sequel account to connect HubSpot and generate an API key. Sign up free at sequel.sh — no credit card required. Then create a connection to HubSpot and generate an API key from Settings → API Keys.
Can I connect multiple HubSpot accounts?
Yes. Sequel supports multiple connections of the same type. If you have multiple HubSpot accounts or properties, add each as a separate connection in Sequel. Codex will be able to query all of them.
How do I configure Sequel for Codex CLI?
Add the Sequel MCP server to ~/.codex/config.yaml as shown above. Create the file if it doesn't exist. Replace `sql_your_api_key` with a real key from Settings → API Keys, then restart Codex.
Does Codex CLI support HTTP MCP servers?
Yes. Codex CLI supports MCP over HTTP (Streamable HTTP transport). The `type: http` field in the config tells Codex to use this transport when connecting to Sequel.
Can I limit which databases Codex can access?
Sequel MCP is scoped to your organization's connected data sources. You can create separate API keys for different environments and revoke them at any time from Settings → API Keys.
Is this the same as the original OpenAI Codex model?
No — Codex CLI is OpenAI's agentic terminal coding tool, separate from the original Codex language model. It uses the latest OpenAI models (GPT-4o and o-series) with MCP tool support.
How do I connect HubSpot to Sequel?
Click 'New Connection' → HubSpot, name it, and click 'Connect with HubSpot'. HubSpot's OAuth screen will ask you to choose a portal and confirm the read-only CRM scopes Sequel needs. The whole flow takes under a minute.
What HubSpot permissions does Sequel ask for?
Read-only access to contacts, companies, deals, tickets, and their schemas: crm.objects.{contacts,companies,deals,tickets}.read plus crm.schemas.{contacts,companies,deals,tickets}.read. No write scopes are requested, so Sequel cannot create, update, or delete CRM records.
Does Sequel support custom properties?
Yes. The connector pulls the property schema for each object type at query time and uses your real custom property names — so 'ACV', 'Onboarding Status', or whatever you've built shows up in answers without manual configuration.
Can Sequel see Marketing Hub data — emails, forms, workflows?
Out of the box the connector ships read tools for CRM objects (contacts, companies, deals, tickets) and pipelines. Marketing assets like emails and workflows are not currently exposed; ping us if you need them and we'll prioritize.
Connect HubSpot to Codex today
Sign up free, connect your data sources, and start querying in minutes.