How to Fix Databricks Claude PERMISSION_DENIED Rate Limit of 0 (TRIAL_VERIFIED Trust Tier): Step-by-Step Guide
How to Fix Databricks Claude PERMISSION_DENIED Rate Limit of 0 (TRIAL_VERIFIED Trust Tier): Step-by-Step Guide
Every Claude and GPT-5.x request returns PERMISSION_DENIED with a rate limit of 0. The endpoint settings look fine. Llama and other open models work. This is a workspace-level trust tier issue — here is how to confirm it, what it means, and how to escalate for an upgrade to PAYABLE_VERIFIED.
VERIFIED
works
Support
{
"error_code": "PERMISSION_DENIED",
"message": "PERMISSION_DENIED: The endpoint is temporarily disabled
due to a Databricks-set rate limit of 0."
}
// What you have already verified:
// ✓ Billing is active — workspace is on Premium pricing tier
// ✓ system.ai schema is empty/unconfigured — no Unity Catalog restrictions
// ✓ Cross-geo data processing is enabled — not a regional issue
// ✓ Reproduced in West Europe AND France Central — not region-specific
// ✓ Llama, DBRX, and other open models work fine
// ✗ Only Claude and GPT-5.x (premium hosted models) return rate limit of 0
Why This Is Happening — The TRIAL_VERIFIED Trust Tier
This error is not a misconfiguration and it cannot be fixed from within the workspace. The "Databricks-set rate limit of 0" is applied at the platform level by Databricks — not at the endpoint level by the workspace administrator. It reflects a workspace trust tier classification that restricts access to premium hosted models (Claude, GPT-5.x) regardless of what the endpoint settings, AI Gateway configuration, or billing status shows in the workspace UI.
Databricks maintains an internal workspace trust tier system. Workspaces that signed up through certain channels, or that Databricks has classified as trial or evaluation accounts, are placed in a TRIAL_VERIFIED trust tier. At this tier, Databricks applies a platform-enforced rate limit of 0 to premium hosted models — meaning no requests are allowed regardless of what QPM/TPM limits are configured in the AI Gateway or Serving endpoint settings. This is Databricks's fraud and abuse prevention mechanism for high-value model endpoints.
The reason Llama and other open-source models still work is that they are not subject to this Databricks-set platform restriction — the premium model gate specifically targets pay-per-token endpoints that route to external model providers (Anthropic for Claude, OpenAI for GPT-5.x). Databricks bears the cost of these API calls and therefore gates access at the workspace trust tier level before the billing relationship is confirmed.
The fix requires Databricks to upgrade the workspace trust tier from TRIAL_VERIFIED to PAYABLE_VERIFIED. This is a backend operation — it cannot be performed from the workspace console, the Databricks portal, or any self-service mechanism. It requires contact with Databricks Sales or Databricks Support.
Confirming It Is a Trust Tier Issue — Not a Configuration Problem
Before contacting Databricks, confirm this is definitely the trust tier issue and not a different configuration problem. Work through this checklist — if all items pass and you still get the rate limit of 0 error, the trust tier is the confirmed cause.
Confirm open-source models work while premium models fail
In the AI Playground, switch from databricks-claude-opus-4-8 to databricks-meta-llama-3-3-70b-instruct and send a test message. If Llama responds successfully but Claude returns PERMISSION_DENIED, this confirms the block is model-specific and applied at the platform level — not a workspace network issue, not an authentication problem, and not an AI Gateway misconfiguration. Log this result for your support ticket.
Verify endpoint-level rate limits are not set to 0 from within the workspace
Navigate to Serving → Foundation Model endpoints. Open the databricks-claude-opus-4-8 endpoint. Check the AI Gateway tab — verify that no rate limit in the workspace configuration is set to 0. If the workspace UI shows "No limit" or a positive value but the error still says "rate limit of 0", this confirms the block is coming from the Databricks platform layer — not the workspace configuration.
Note the distinction: a workspace admin setting a rate limit to 0 in the UI produces the error message "The endpoint is disabled due to a rate limit set to 0". The trust tier error reads "The endpoint is temporarily disabled due to a Databricks-set rate limit of 0" — the word Databricks-set is the key indicator that the block comes from Databricks's platform, not your configuration.
Reproduce via direct API call to rule out Playground-specific issues
Make a direct REST API call to the Foundation Model endpoint. If this also returns PERMISSION_DENIED with rate limit of 0, the Playground is not involved and the block is at the platform level.
"https://YOUR_WORKSPACE_URL/serving-endpoints/databricks-claude-opus-4-8/invocations" \
-H "Authorization: Bearer YOUR_PAT_TOKEN" \
-H "Content-Type: application/json" \
-d '{"messages": [{"role": "user", "content": "Hello"}], "max_tokens": 50}'
# Expected response confirming TRUST TIER block (not a Playground issue):
# {"error_code":"PERMISSION_DENIED","message":"PERMISSION_DENIED: The endpoint is
# temporarily disabled due to a Databricks-set rate limit of 0."}
# Also test an open-source model to confirm those work: curl -X POST \
"https://YOUR_WORKSPACE_URL/serving-endpoints/databricks-meta-llama-3-3-70b-instruct/invocations" \
-H "Authorization: Bearer YOUR_PAT_TOKEN" \
-H "Content-Type: application/json" \
-d '{"messages": [{"role": "user", "content": "Hello"}], "max_tokens": 50}'
# Expected: successful response — confirms block is model-specific (trust tier gate)
Record workspace details for the support ticket
Gather the following information — you will need all of it for the Databricks support ticket or Sales conversation:
- Workspace ID — visible in the URL when logged into the workspace (e.g. https://adb-XXXXXXXXXX.X.azuredatabricks.net)
- Account ID — from Account Console → top right or Settings
- Cloud platform — Azure / AWS / GCP
- Region(s) tested — e.g. West Europe, France Central
- Pricing tier — Premium / Enterprise
- Exact error message — screenshot and the JSON response
- Models affected — list all premium models blocked
- Models working — Llama, DBRX, others that succeed
| Factor | TRIAL_VERIFIED (current) | PAYABLE_VERIFIED (needed) |
|---|---|---|
| Claude models | ✗ Databricks-set rate limit of 0 | ✓ Normal QPM/TPM limits apply |
| GPT-5.x models | ✗ Databricks-set rate limit of 0 | ✓ Normal QPM/TPM limits apply |
| Llama / DBRX / open models | ✓ Works normally | ✓ Works normally |
| AI Gateway configuration | ⚠ Visible but overridden for premium models | ✓ Fully respected for all models |
| Error message indicator | "Databricks-set rate limit of 0" | No platform block error |
| How to change | Cannot self-serve — backend only | Databricks Sales or Support request |
| Typical trigger | Trial signup, evaluation workspace, certain partner channels | Confirmed active billing commitment |
How to Request Upgrade to PAYABLE_VERIFIED — Two Paths
There is no self-service mechanism to change the workspace trust tier. It must be changed by the Databricks backend team in response to a support ticket or a Sales engagement. Use whichever path is available to you first — both escalate to the same team.
Path A: Open a Support Ticket (if you have a support plan)
Log into help.databricks.com. Select Create a support case. Set the severity to Severity 1 / P1 if the issue is blocking production workloads (all Claude/GPT-5.x models unavailable). Use the support ticket template below — copy it exactly and fill in your workspace details. Route to: Model Serving / Foundation Model APIs team.
Path B: Escalate via your Databricks Sales / Account team
If you have an assigned Databricks Account Executive or Customer Success Manager, contact them directly. This is often the fastest path — AEs can initiate the trust tier upgrade internally without the support ticket process. Reference the error and the workspace ID, and ask them to escalate to the Model Serving / Foundation Model APIs team to upgrade the workspace to PAYABLE_VERIFIED trust tier.
All premium hosted Foundation Model API endpoints (Anthropic Claude variants, OpenAI
GPT-5.x) are returning PERMISSION_DENIED with a Databricks-set rate limit of 0.
Open-source models (Llama, DBRX) work correctly. This is blocking all AI development
and evaluation work on this workspace.
## Error Received
{"error_code":"PERMISSION_DENIED","message":"PERMISSION_DENIED: The endpoint is
temporarily disabled due to a Databricks-set rate limit of 0."}
## Workspace Details
- Workspace URL: [https://adb-XXXXXXXXXX.X.azuredatabricks.net]
- Workspace ID: [XXXXXXXXXX]
- Account ID: [your-account-id]
- Cloud: [Azure / AWS / GCP]
- Region(s): [West Europe, France Central — reproduced in both]
- Pricing Tier: [Premium / Enterprise]
- Billing: Active — [describe your subscription/billing arrangement]
## Troubleshooting Already Performed
- ✓ Account admin access confirmed
- ✓ Cross-geo data processing enabled (not a regional geo issue)
- ✓ system.ai schema empty — no Unity Catalog model restrictions
- ✓ Reproduced via direct REST API (not Playground-specific)
- ✓ Reproduced in multiple regions — not region-specific
- ✓ Workspace AI Gateway rate limits are NOT set to 0
- ✓ Llama/DBRX models work — only Claude and GPT-5.x are blocked
## Root Cause Suspected
This workspace appears to be in the TRIAL_VERIFIED trust tier, which applies a
Databricks-set rate limit of 0 to premium hosted models regardless of workspace-level
endpoint or AI Gateway configuration. This cannot be resolved from the workspace UI.
## Requested Action
Please verify the workspace trust tier and upgrade it to PAYABLE_VERIFIED to enable
access to premium hosted models including Anthropic Claude and OpenAI GPT-5.x via
the Foundation Model APIs. The workspace is on the Premium pricing tier with active
billing. This is not a serverless compute quota issue — please route to the
Model Serving / Foundation Model APIs team.
## Impact
Unable to use Claude models for development/evaluation in the AI Playground and via
Model Serving endpoints. This blocks all AI development work requiring premium models.
What You Can Do While Waiting for the Trust Tier Upgrade
The trust tier upgrade is handled by Databricks's backend team and typically takes 1–3 business days once the ticket reaches the right team. In the meantime, there are two approaches to continue development work.
Option A — Use an External Model endpoint (Claude via Anthropic API directly)
Databricks supports External Models in Model Serving — you can configure an endpoint that proxies to the Anthropic API using your own Anthropic API key. This bypasses the Databricks-hosted Foundation Model API entirely and is not subject to the trust tier restriction. The endpoint is managed within Databricks for governance but calls Anthropic directly.
from databricks.sdk.service.serving import (
ExternalModel, ExternalModelProvider, ServingEndpointInput,
ServedModelInput, AnthropicConfig
)
client = WorkspaceClient()
# Create an External Model endpoint pointing to Anthropic directly client.serving_endpoints.create(
name="claude-external-anthropic",
config=ServingEndpointInput(
served_models=[
ServedModelInput(
name="claude-opus-4",
external_model=ExternalModel(
provider=ExternalModelProvider.ANTHROPIC,
name="claude-opus-4-5", # Anthropic model name
task="llm/v1/chat",
anthropic_config=AnthropicConfig(
anthropic_api_key="{{secrets/your-scope/anthropic-api-key}}"
)
)
)
]
)
)
print("External Claude endpoint created — bypasses trust tier restriction")
Option B — Use open-source models as a functional substitute
For evaluation and development tasks that can tolerate a different model, databricks-meta-llama-3-3-70b-instruct is not subject to the trust tier gate and provides strong performance for most development and prototyping use cases. This does not resolve the root cause but keeps development work moving while the trust tier upgrade is processed.
What to Expect After the Trust Tier Is Upgraded
Once Databricks upgrades the workspace to PAYABLE_VERIFIED, no additional configuration changes are needed. The platform-level rate limit of 0 is removed from the backend. The existing databricks-claude-opus-4-8 and other premium hosted model endpoints become immediately accessible — the same endpoint you have been trying to use will begin returning successful responses without any changes to the workspace settings, AI Gateway configuration, or endpoint definitions.
Verify by sending a test query from the AI Playground. The model selector should now show Claude responding normally. If the trust tier was upgraded but Claude still returns PERMISSION_DENIED, check whether the workspace endpoint-level AI Gateway rate limits were accidentally set to 0 at some point during troubleshooting — and reset them to a positive value or "No limit".
from openai import OpenAI
client = OpenAI(
api_key=os.environ.get("DATABRICKS_TOKEN"),
base_url=f"{os.environ.get('DATABRICKS_HOST')}/serving-endpoints"
)
response = client.chat.completions.create(
model="databricks-claude-opus-4-8",
messages=[{"role": "user", "content": "Hello — confirm Claude is accessible."}],
max_tokens=100
)
print(response.choices[0].message.content)
# Expected: a normal Claude response — trust tier upgrade confirmed working
# If still PERMISSION_DENIED: check AI Gateway rate limits in the workspace UI
Key Takeaways
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