opencode/specs/v2/provider-policy.md

Provider Policy Proposal

Status: Proposed and unimplemented. This document is design input, not current configuration or runtime behavior.

Purpose

This proposal would let policies control whether an operation on a named resource is allowed. Statements could be authored in configuration files while policy evaluation remained its own runtime concern.

The first policy consumer is provider availability:

action:   provider.use
resource: provider ID, such as openai or company-ai

Provider configuration and provider policy remain separate:

• providers describes endpoints, options, and model overrides.
• experimental.policies determines whether an operation using a provider is allowed.

A provider can be correctly configured and have valid credentials while policy still denies its use.

Goals

• Replace legacy enabled_providers and disabled_providers.
• Keep the default experience unchanged when users specify no policy.
• Support wildcard matching for actions and resources.
• Provide one small policy vocabulary that can later cover operations such as plugin.load or mcp.connect.
• Let user policy override repository policy, and later allow organization-managed policy to override both.
• Keep evaluation simple: matching statements are applied in order and the last match wins.

Non-Goals

• Policies do not configure endpoints, credentials, models, or provider options.
• Policies do not make unusable resources usable.
• Policies do not currently provide conditions, principals, approval prompts, or enforced configuration values.
• This spec does not define how organization-managed policies are delivered.

Statement Shape

{
  "experimental": {
    "policies": [
      {
        "effect": "deny",
        "action": "provider.use",
        "resource": "openai",
      },
    ],
  },
}

interface PolicyInfo {
  effect: "allow" | "deny"
  action: string
  resource: string
}

The proposed Policy module would own the shared Policy.Info interface, Policy.Effect type, and evaluator. Domains would define their supported typed statement schemas; for example, Catalog.ProviderPolicy would fix action to "provider.use". The config schema could gather those domain-defined statement schemas into an experimental.policies union.

Matching

Both action and resource use opencode's existing wildcard matching behavior.

Examples:

Action	Resource	Matches
provider.use	openai	Only use of provider ID openai
provider.use	company-*	Use of provider IDs such as company-us and company-eu
provider.*	*	Any provider operation on any provider, if more actions are introduced later

No pattern-specific precedence exists. A specific resource does not automatically beat a wildcard resource. Written/evaluation order controls the result.

Evaluation

To evaluate an operation and resource:

1. Start with allow.
2. Consider every statement whose action and resource match the requested action and resource.
3. Each matching statement replaces the current decision with its effect.
4. The last matching statement determines the result.

Conceptually:

function evaluate(action: string, resource: string, fallback: Policy.Effect, statements: Policy.Info[]) {
  return (
    statements.findLast(
      (statement) => Wildcard.match(action, statement.action) && Wildcard.match(resource, statement.resource),
    )?.effect ?? fallback
  )
}

Each caller supplies the default effect appropriate for its operation. Catalog provider use supplies "allow", so no provider policy statements means normal behavior continues: otherwise usable providers are allowed.

Ordering Within One Config Document

Statements remain in the order written by the user.

To deny all providers except Anthropic:

{
  "experimental": {
    "policies": [
      {
        "effect": "deny",
        "action": "provider.use",
        "resource": "*",
      },
      {
        "effect": "allow",
        "action": "provider.use",
        "resource": "anthropic",
      },
    ],
  },
}

Result:

provider.use / anthropic -> allow
provider.use / openai    -> deny

To allow internal providers except experimental ones:

{
  "experimental": {
    "policies": [
      { "effect": "deny", "action": "provider.use", "resource": "*" },
      { "effect": "allow", "action": "provider.use", "resource": "company-*" },
      { "effect": "deny", "action": "provider.use", "resource": "company-experimental-*" },
    ],
  },
}

Result:

company-stable: allowed
company-experimental-fast: denied
openai: denied

Ordering Across Authored Config Documents

Ordinary settings and policies have different precedence needs:

• Ordinary settings are read forward, so location-specific settings override user-global settings.
• Policies are read by reversing authored config documents, so user-global policy can override repository policy.
• Statements inside each document keep their written order.

At minimum, this means a repository cannot silently re-enable something the user denied globally.

Project config:

{
  "experimental": {
    "policies": [{ "effect": "allow", "action": "provider.use", "resource": "openai" }],
  },
}

User-global config:

{
  "experimental": {
    "policies": [{ "effect": "deny", "action": "provider.use", "resource": "openai" }],
  },
}

Result:

provider.use / openai -> deny

The relative policy precedence of direct project files and .opencode files is intentionally deferred until .opencode configuration is reviewed.

Organization-Managed Policy

Organization-managed policy is not ordinary authored config. When implemented, managed statements must be appended after the reversed authored statements so they have final authority.

repository policy -> user-global policy -> organization-managed policy

Plugins must not be allowed to add, remove, or override policy statements. Plugins can contribute functionality or configured providers; policy determines whether opencode permits an operation through its managed execution paths.

Provider policy is not a full sandbox for executable plugins. A denied provider must not be usable through the normal provider/model path, but arbitrary plugin code requires separate governance if that becomes a compliance requirement.

Interaction With Provider Configuration

{
  "providers": {
    "company-ai": {
      "endpoint": {
        "type": "openai/responses",
        "url": "https://ai.company.example/v1/responses",
      },
    },
  },
  "experimental": {
    "policies": [
      { "effect": "deny", "action": "provider.use", "resource": "*" },
      { "effect": "allow", "action": "provider.use", "resource": "company-ai" },
    ],
  },
}

The provider entry configures company-ai; the policy statements make it the only provider permitted for use.

Provider policy applies regardless of how a provider becomes known or usable, including:

• models.dev catalog data
• environment credentials
• saved accounts
• built-in provider plugins
• explicit provider configuration

Applying Provider Policy

Provider records and model overrides should be assembled before checking provider policy. Otherwise later provider loading could recreate a provider that was already filtered.

Intended flow:

1. Build provider/model catalog entries.
2. Apply configured provider and model overrides.
3. Ask Policy.Service to evaluate provider.use for each provider ID.
4. Prevent denied providers from being selectable or used.

Whether denied providers are removed entirely or retained as disabled records for diagnostics remains an implementation decision.

Legacy Migration

Legacy deny list:

{
  "disabled_providers": ["openai", "google"],
}

Equivalent v2 policy:

{
  "experimental": {
    "policies": [
      { "effect": "deny", "action": "provider.use", "resource": "openai" },
      { "effect": "deny", "action": "provider.use", "resource": "google" },
    ],
  },
}

Legacy allowlist:

{
  "enabled_providers": ["anthropic", "openai"],
}

Equivalent v2 policy:

{
  "experimental": {
    "policies": [
      { "effect": "deny", "action": "provider.use", "resource": "*" },
      { "effect": "allow", "action": "provider.use", "resource": "anthropic" },
      { "effect": "allow", "action": "provider.use", "resource": "openai" },
    ],
  },
}