Gemini Enterprise vs Procore AI Go

Gemini Enterprise

The assistant is callable through a GA v1 method with a 99.5 per cent SLA, OAuth through IAM, a public Discovery document and optional Model Armor screening. Seat prices weren't found on Google's pages, onboarding needs a billing account and a person, and the API also reads OAuth tokens from a URL query parameter.

Procore AI Go

Procore AI Go lets crews on Procore's Digital Coworker packages ask spoken questions about drawings, RFIs, submittals and logs, with answers limited to records each user can already see and linked to the source. It is a read-only iOS beta through TestFlight, and no API or MCP tool reaches it, so an outside agent can't use it.

Gemini Enterprise

1. Create a Gemini Enterprise app first. StreamAssist needs its APP_ID, and the caller needs discoveryengine.assistants.assist
2. Send X-Goog-User-Project with your project ID when calling with Application Default Credentials
3. Pass the session name from the final stream message on the next call to keep context. Leaving it empty starts a new session
4. Read connectorAuthErrors in the response. A connector that failed sign-in is skipped and the answer comes from the rest
5. Use the A2A URL returned by Agent Registry verbatim. It takes the project number, not the project ID
6. Send the token in the Authorization: Bearer header, not as ?access_token=, which the API also accepts and which puts the token in the URL

Procore AI Go

1. Don't plan to call Procore AI Go. It's a voice app for people on an iPhone, with no programmatic interface
2. For Procore project data, use Procore's REST API under the customer's OAuth app instead
3. Expect each question asked in the app to use the company's Procore Credits, unless it's on the flat-fee Starter Pack
4. Ask the Procore Company Administrator to join the programme in Procore Explore if a crew needs the app