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Project access policy in Caveman Cloud sets the outer boundary for every key in a project: which providers and models are reachable, how much traffic the project can send, and which content checks run before a prompt reaches a provider. Configure it under Governance → Access and Governance → Guardrails. Per-key settings can tighten these limits but never exceed them.

Providers and models

Under Governance → Access, the Project access panel controls:
  • Providers: which connected providers this project may route to.
  • Models: one model per line. Leave it empty to allow every model. Use exact names (gpt-4o-mini), provider-qualified names (anthropic:claude-*), wildcards, or cave-auto for automatic routing.
Example model allowlist
Restricting models is the simplest cost control there is: keeping premium models off a project prevents expensive calls entirely rather than catching them after the fact. Use per-key allowed models to narrow further for individual workloads.

Project request limits

Key-level Requests / min, Tokens / min, and Parallel limits apply on top of these, so a single runaway key cannot exhaust the project’s capacity.

Guardrails

Governance → Guardrails blocks secrets, masks PII, denies patterns, or calls your own service before a prompt reaches the provider. Turn on Use as a project default to run a rule on every request. When it is off, only keys that name the guardrail run it.
Rules that check the model’s answer buffer a streamed response until the verdict, then send it whole. For that project, time to first token becomes time to last token.
Use Test your rules to try input against your rules before publishing. Testing never changes configuration. A saved rule is published as a policy version that the gateway applies on the next request; re-read state after publishing to confirm delivery.

Who can change access

Owners, Admins, and Engineers can edit access policy and guardrails. Viewers and Billing contacts can view them but not change them. Every change is recorded in Governance → Audit.
Project access control is part of the Boost package and above. See Billing.