feat(exa): add x-exa-integration header for usage attribution

[tgonzalezc5]

Summary

Adds an x-exa-integration: sim header to every request the Exa tools send to api.exa.ai. This is a request header Exa uses on their side to attribute API traffic to the integration that originated it; it has no effect on the response or on user-facing behavior.

Updated:

• apps/sim/tools/exa/search.ts
• apps/sim/tools/exa/get_contents.ts
• apps/sim/tools/exa/find_similar_links.ts
• apps/sim/tools/exa/answer.ts
• apps/sim/tools/exa/research.ts (both the create-task POST and the polling GET)

Example

headers: (params) => ({
  'Content-Type': 'application/json',
  'x-api-key': params.apiKey,
  'x-exa-integration': 'sim',
}),

Test plan

• grep -n "x-exa-integration" apps/sim/tools/exa/*.ts shows the header set in all 6 request sites (5 tools, plus the research polling fetch)
• Existing Exa tool tests still pass (no behavioral change to params/response handling)

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		May 1, 2026 9:07pm

[cursor]

PR Summary

Low Risk
Low risk: this only adds a static request header to Exa API calls and does not change request bodies or response handling; the main risk is if Exa rejects unknown headers, which is unlikely.

Overview
Adds the x-exa-integration: sim header to all Exa tool HTTP requests (search, answer, get_contents, find_similar_links, and research, including the research polling GET) so Exa can attribute API usage to this integration.

^{Reviewed by Cursor Bugbot for commit 39c9286. Bugbot is set up for automated code reviews on this repo. Configure here.}

[greptile-apps]

Greptile Summary

This PR adds 'x-exa-integration': 'sim' as a static attribution header to all outbound requests made by the five Exa tools (search, answer, get_contents, find_similar_links, research). The header is purely informational on Exa's side and has no effect on request/response semantics. Coverage is complete — the research tool correctly adds it to both the initial task-creation POST and the polling GET inside postProcess.

Confidence Score: 5/5

Safe to merge — additive-only change with no behavioral impact on request/response handling.

All five tool files are updated consistently and the header value is a hardcoded, non-sensitive string. The research polling path is also covered. No logic, type, or security concerns.

No files require special attention.

Important Files Changed

Filename	Overview
apps/sim/tools/exa/search.ts	Adds x-exa-integration: sim header to the search tool's request headers — correct and complete.
apps/sim/tools/exa/answer.ts	Adds x-exa-integration: sim header to the answer tool's request headers — correct and complete.
apps/sim/tools/exa/find_similar_links.ts	Adds x-exa-integration: sim header to the find-similar-links tool's request headers — correct and complete.
apps/sim/tools/exa/get_contents.ts	Adds x-exa-integration: sim header to the get-contents tool's request headers — correct and complete.
apps/sim/tools/exa/research.ts	Adds x-exa-integration: sim to both the task-creation POST (via headers config) and the polling GET inside postProcess — both call sites correctly covered.

Sequence Diagram

sequenceDiagram
    participant Client as Sim Workflow
    participant Tool as Exa Tool
    participant Exa as api.exa.ai

    Client->>Tool: execute(params)
    Tool->>Exa: POST /endpoint (x-exa-integration: sim added)
    Exa-->>Tool: response
    alt research tool polling
        loop until complete
            Tool->>Exa: GET /research/v1/taskId (x-exa-integration: sim added)
            Exa-->>Tool: task status
        end
    end
    Tool-->>Client: processed result

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