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ChatGPT can connect to the Strand AI MCP server as a custom connector and operate samples your organization already has. It cannot bring a new slide in.
You cannot upload a slide from ChatGPT. Sending a slide to storage requires the client to make an outbound network request. ChatGPT’s sandbox does not allow one. This is a property of ChatGPT’s sandbox, not a Strand AI restriction, and unlike claude.ai there is no host to add to an allowlist. Ingest the slide first at app.strandai.com/samples/upload, from Claude Code, or with the Python SDK, then work on it from ChatGPT.
Once a sample exists, ChatGPT can list and read samples, start cell segmentation, estimate or submit a Lattice job, read its status, and return a result download link.

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Before you start

Adding a custom MCP connector requires ChatGPT’s “Developer mode”. OpenAI marks this mode as elevated risk and disables it by default. In Business and Enterprise workspaces, an administrator must enable it before members can see the add-connector UI. Check OpenAI’s connector documentation for the current setting and contact your workspace administrator if necessary. You also need a Strand AI account, membership in a Strand AI organization, and enough credits in that organization for the jobs you intend to submit.

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Connect

Add a custom connector pointing at the Strand AI server URL:
Strand AI publishes OAuth metadata and a client-registration endpoint at that URL. Compatible clients discover the authorization flow from this metadata and open Strand AI’s sign-in and consent screen. Sign in, then select the Strand AI organization this connection may act on. The connection is bound to your user and the selected organization. Runs use that organization’s credits.
If connecting fails, delete the connector and add it again. MCP clients generally cache their initial OAuth client registration. Reconnecting reuses the cached registration.
You can review or revoke a connection at any time from Settings → Connected Apps in the Strand AI dashboard. Revoking takes effect immediately.

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What works from ChatGPT

The connector exposes ten tools. Tools other than upload_sample call Strand AI directly and do not require outbound network access from the client. upload_sample requires outbound access because the client sends the slide bytes to storage. upload_sample immediately creates the owned sample and returns its id plus a presigned transfer for sending one supported H&E WSI directly to storage over HTTP. That id is used by get_sample and submit_job; finalizing the transfer starts ingest. Without outbound network access, the transfer cannot finish and the sample remains in uploading until the organization’s retention policy removes it. Claude Code and the SDKs run on your machine and can complete the transfer. See the MCP server overview for what each tool does and the Pricing page for what a job costs.

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Example prompts

List my Strand AI samples and summarize the job history of the most recent one.
Dry-run CD3e, CD8, and Ki67 on sample SAMPLE_ID, show me the credit estimate, and ask before submitting.
Job JOB_ID finished. Give me an OME-TIFF download link for it.

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Data handling

Research use only (RUO). Not for use in clinical or diagnostic procedures.
The service is for de-identified data only. Do not upload protected health information or other regulated health data, and upload only data you are authorized to process. Organization retention settings and your Strand AI agreement govern uploaded data and results. See the Strand AI Privacy Policy and Security and data handling. Report suspected security issues to security@strandai.com. For connector problems, email support@strandai.com with the job or sample ID. Do not include slide data or credentials.