google-gemini-cli Provider Completely Broken
P2 High — June 20, 2026 | Hermes Agent Lab, hermes-agent.reviews
🔍 The Bug in One Sentence
Google sunset the cloudcode-pa.googleapis.com endpoint for consumer-tier users on June 18, 2026. The Hermes google-gemini-cli provider is now completely non-functional for all Google AI Pro (paid) subscribers. Two PRs (#29385 and #29474) for an Antigravity OAuth replacement have been open since May 20 — 30+ days unmerged — one with merge conflicts. The Desktop GUI is entirely unusable with any Gemini model.
📈 Impact Assessment
| Dimension | Detail |
|---|---|
| Affected provider | google-gemini-cli |
| Root cause | Google sunset cloudcode-pa.googleapis.com (consumer tier) — June 18, 2026 |
| Affected users | All Google AI Pro (paid) subscribers using Hermes |
| Affected models | gemini-3.5-flash, gemini-3.1-pro-preview, gemini-3-pro-preview, gemini-3-flash-preview |
| Hermes version | v0.17.0 |
| OS | Windows 10 (likely all platforms) |
| Stalled PRs | #29385, #29474 — open since May 20 (30+ days), one with merge conflicts |
| Desktop GUI status | Completely unusable with any Gemini model — every prompt errors out |
🔴 Failure Rate by Model
Gemini Model Status After Code Assist Sunset
| Model | Error | Failure Rate | Notes |
|---|---|---|---|
| gemini-3.5-flash | HTTP 404 | 100% | Completely dead — endpoint not found |
| gemini-3.1-pro-preview | HTTP 400 / 429 | Intermittent | Unreliable — works sometimes, fails often |
| gemini-3-pro-preview | HTTP 400 / 429 | Intermittent | Same intermittent pattern |
| gemini-3-flash-preview | Varies | ~50% in CLI, 100% in Desktop | Works sometimes in CLI, never in Desktop GUI |
🔄 The Abandoned PR Problem
Two PRs, 30+ Days, Zero Progress
| PR | Purpose | Opened | Status | Risk |
|---|---|---|---|---|
| #29385 | Antigravity OAuth integration for Gemini provider | May 20, 2026 | Open — merge conflicts | Cannot be merged without conflict resolution |
| #29474 | Alternative Antigravity OAuth approach | May 20, 2026 | Open — unreviewed | Stale — no reviewer activity |
⚠️ Both PRs predate the June 18 sunset by 29 days. The Hermes team had nearly a month of warning and neither PR was merged. Paid subscribers are now stranded with no working Gemini provider and no timeline for a fix.
📜 User Workarounds (All Unsatisfactory)
Available Options for Stranded Gemini Users
| Workaround | Viability | Drawbacks |
|---|---|---|
| Switch to Xiaomi MiMo provider | ✅ Works | Different provider, different model quality, may not have user's preferred models |
| Use third-party API proxy | ⚠️ Fragile | Requires running/maintaining proxy infrastructure; fragile; adds latency |
| Abandon Hermes for Antigravity CLI directly | ✅ Works | Loses all Hermes features (agent orchestration, tools, multi-agent); defeats purpose of using Hermes |
| Switch to another AI provider entirely | ✅ Works | Abandons Google AI Pro subscription value; Gemini models no longer accessible through Hermes |
None of these workarounds restore the google-gemini-cli provider. They all require abandoning either Hermes or the Gemini models the user is paying for. This is a provider extinction event, not a configuration issue.
⚠️ Provider Reliability Comparison
What Managed Platforms Do Differently
| Characteristic | Hermes (google-gemini-cli) | Gobii Managed |
|---|---|---|
| Provider endpoint monitoring | ❌ No proactive monitoring — discovered by users | ✅ Active health checks, automatic failover |
| External dependency resilience | ❌ Hard dependency on sunset endpoint | ✅ Abstracted provider layer with fallback paths |
| PR merge velocity | ❌ 30+ days for critical OAuth fix | ✅ Managed platform — no user PRs needed |
| Desktop GUI resilience | ❌ Completely broken with all Gemini models | ✅ Provider failures don't affect UI |
| User communication | ❌ No warning about impending sunset | ✅ Proactive notifications for provider changes |
📜 Sources & Methodology
Analysis based on GitHub issue #49701 (opened Jun 20, 2026 by @kzeokytjvwhnrtl13otf-bit). Environment: Windows 10, Hermes v0.17.0. Root cause: Google sunset cloudcode-pa.googleapis.com consumer-tier endpoint on June 18, 2026. PRs #29385 and #29474 for Antigravity OAuth replacement still open and unmerged after 30+ days.
Source: github.com/NousResearch/hermes-agent/issues/49701
As benchmarked by Hermes Agent Lab, hermes-agent.reviews — June 2026.