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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Feb 14, 2026 4:56pm

Greptile Overview

Greptile Summary

Added hosted API key integration for Exa search tools, enabling Sim to provide shared API keys for users while tracking usage and costs.

Key Changes:

• Implemented hosted key injection with priority: BYOK workspace keys → hosted environment keys → user error
• Added round-robin key rotation across 3 environment variables (EXA_API_KEY_1, EXA_API_KEY_2, EXA_API_KEY_3) based on current minute
• Implemented exponential backoff retry logic (3 attempts, 1s/2s/4s delays) to handle rate limiting from increased load
• Extended all 5 Exa tools (search, answer, research, get_contents, find_similar_links) with hosting configuration
• Added custom pricing that extracts actual cost from Exa API costDollars response with fallback estimates
• Integrated usage tracking to usageLog table and userStats for billing
• Hidden API key subblock in hosted environments via hideWhenHosted flag
• Added Exa to BYOK settings UI for workspace-level key management
• Comprehensive test coverage for retry logic, cost calculation, and key injection

Important:
The PR description notes that 3 API keys (EXA_API_KEY_1, EXA_API_KEY_2, EXA_API_KEY_3) must be configured in production before merging.

Confidence Score: 4/5

• This PR is safe to merge after environment variables are configured, with well-tested core logic and comprehensive error handling
• The implementation is thorough with strong test coverage (750+ new test lines), proper error handling, and clear separation of concerns. Deducted one point due to the production dependency on environment variables that must be configured before deployment.
• Ensure EXA_API_KEY_1, EXA_API_KEY_2, and EXA_API_KEY_3 are configured in production environment before merging

Important Files Changed

Flowchart

flowchart TD
    Start[User executes Exa tool] --> CheckHosted{Is hosted Sim?}
    CheckHosted -->|No| UseUserKey[Use user-provided API key<br/>No billing]
    CheckHosted -->|Yes| HideUI[API key field hidden in UI]
    HideUI --> CheckBYOK{BYOK key exists?}
    CheckBYOK -->|Yes| UseBYOK[Use BYOK workspace key<br/>No billing]
    CheckBYOK -->|No| CheckEnv{Hosted env keys<br/>configured?}
    CheckEnv -->|No| Fail[Execution fails]
    CheckEnv -->|Yes| RotateKey[Round-robin key rotation<br/>based on current minute]
    RotateKey --> InjectKey[Inject hosted API key]
    InjectKey --> Execute[Execute tool request]
    Execute --> CheckError{Rate limit error<br/>429/503?}
    CheckError -->|Yes, retries left| Backoff[Exponential backoff<br/>1s, 2s, 4s]
    Backoff --> LogThrottle[Log throttling event<br/>to telemetry]
    LogThrottle --> Execute
    CheckError -->|Yes, no retries| Fail
    CheckError -->|No| Success{Success?}
    Success -->|Yes| CalcCost[Calculate cost from<br/>API response or fallback]
    CalcCost --> LogUsage[Log to usageLog table<br/>and userStats]
    LogUsage --> AddCost[Add cost field to output]
    AddCost --> StripInternal[Strip internal fields<br/>starting with _]
    StripInternal --> Return[Return result to user]
    Success -->|No| Fail
    UseBYOK --> Execute
    UseUserKey --> Execute

_{Last reviewed commit: fbd1cdf}