wehub-resource-sync
239 lines
15 KiB
Markdown
239 lines
15 KiB
Markdown
---
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title: "Feature Flags"
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version: 3.8.40
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lastUpdated: 2026-06-28
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---
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# Feature Flags
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> Runtime toggles that change OmniRoute's behavior **without a redeploy**.
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> Every flag listed here is defined in
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> [`src/shared/constants/featureFlagDefinitions.ts`](../../src/shared/constants/featureFlagDefinitions.ts)
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> — the single source of truth. The dashboard and the REST API both read from
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> that file, so the table below is generated to match it 1:1.
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---
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## What Feature Flags Are
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A feature flag is a named toggle (boolean or enum) whose value can be changed at
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runtime and persisted in the database, with no process redeploy required. Each
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flag is described by a `FeatureFlagDefinition` with a `key`, `label`,
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`description`, `category`, `defaultValue`, `type`, and a `requiresRestart` hint.
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### Resolution Order
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The **effective value** of a flag is resolved by
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[`resolveFeatureFlag()`](../../src/shared/utils/featureFlags.ts) with this
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precedence (highest wins):
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1. **DB override** — a value stored in the `key_value` table under the
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`feature_flags` namespace (set via the dashboard or the REST API).
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2. **Environment variable** — `process.env[<KEY>]`, if set and non-empty.
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3. **Definition default** — the `defaultValue` from `featureFlagDefinitions.ts`.
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A boolean flag is considered **enabled** when its effective value is `"true"`,
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`"1"`, or `"yes"` (see `isFeatureFlagEnabled()`).
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> [!NOTE]
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> Most flags also have a matching environment variable of the **same name**
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> documented in [`ENVIRONMENT.md`](./ENVIRONMENT.md). The flag's DB override
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> takes precedence over that environment variable. A flag with
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> `requiresRestart: true` is persisted immediately but only re-read at process
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> startup — toggling it surfaces a **"Restart Server"** banner in the dashboard.
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---
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## Flag Catalog
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38 flags across 6 categories. **Default** is the definition default — the value
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used when neither a DB override nor an environment variable is present.
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### Security (7)
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| Key | Type | Default | Description |
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| -------------------------------- | ------- | -------- | ----------------------------------------------------------------------------- |
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| `REQUIRE_API_KEY` | boolean | `false` | Require an API key for all incoming requests. |
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| `INPUT_SANITIZER_ENABLED` | boolean | `true` | Enable input sanitization for all requests. |
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| `INJECTION_GUARD_MODE` | enum | `off` | Prompt injection guard mode. Values: `off`, `warn`, `block`, `redact`. |
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| `PII_REDACTION_ENABLED` | boolean | `false` | Redact personally identifiable information from requests. |
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| `PII_RESPONSE_SANITIZATION` | boolean | `false` | Sanitize PII from provider responses. |
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| `PII_RESPONSE_SANITIZATION_MODE` | enum | `redact` | Mode for PII response sanitization. Values: `redact`, `warn`, `block`, `off`. |
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| `OUTBOUND_SSRF_GUARD_ENABLED` | boolean | `true` | Block outbound requests to private/internal IP ranges. |
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### Network (8)
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| Key | Type | Default | Restart | Description |
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| ----------------------------------------------- | ------- | ------- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `ENABLE_TLS_FINGERPRINT` | boolean | `false` | ✓ | Enable TLS fingerprint stealth mode. |
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| `ONEPROXY_ENABLED` | boolean | `true` | | Enable 1proxy request proxying. |
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| `PROXY_AUTO_SELECT_ENABLED` | boolean | `false` | | When no proxy is assigned to a connection, auto-select the first working proxy from the registry. Off by default (otherwise any registry proxy becomes a global fallback — #3332). |
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| `OMNIROUTE_CONTROL_PLANE_PROXY_DIRECT_FALLBACK` | boolean | `false` | | Allow OAuth and provider validation flows to bypass a pinned proxy and connect directly when proxy reachability pre-checks fail. Off by default because this can change egress IP. |
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| `MITM_DISABLE_TLS_VERIFY` | boolean | `false` | ✓ | Disable TLS certificate verification for the MITM proxy. **Danger.** |
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| `OMNIROUTE_ALLOW_PRIVATE_PROVIDER_URLS` | boolean | `false` | | Allow provider URLs pointing to private/internal networks. |
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| `OMNIROUTE_ALLOW_LOCAL_PROVIDER_URLS` | boolean | `true` | | Allow adding/validating providers on local/private addresses (127.0.0.1, localhost, LAN). On by default (local-first); disable for strict public-only blocking. Cloud-metadata stays blocked. |
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| `ENABLE_CC_COMPATIBLE_PROVIDER` | boolean | `false` | ✓ | Enable Claude Code compatible provider mode. |
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### Policies (3)
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| Key | Type | Default | Restart | Description |
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| ----------------------------------------- | ------- | ---------- | ------- | ---------------------------------------------------------------------- |
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| `TOOL_POLICY_MODE` | enum | `disabled` | | Tool-use policy enforcement mode. Values: `disabled`, `warn`, `block`. |
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| `RATE_LIMIT_AUTO_ENABLE` | boolean | `false` | | Automatically enable rate limiting based on usage patterns. |
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| `ALLOW_MULTI_CONNECTIONS_PER_COMPAT_NODE` | boolean | `false` | ✓ | Allow multiple connections per compatibility node. |
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### Runtime (10)
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| Key | Type | Default | Restart | Description |
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| ------------------------------------------- | ------- | ------- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `OMNIROUTE_MCP_ENFORCE_SCOPES` | boolean | `true` | | Enforce scope restrictions on MCP tool access. |
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| `OMNIROUTE_MCP_COMPRESS_DESCRIPTIONS` | boolean | `false` | | Compress MCP tool descriptions to reduce token usage. |
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| `OMNIROUTE_ENABLE_RUNTIME_BACKGROUND_TASKS` | boolean | `false` | | Enable background task processing at runtime. |
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| `OMNIROUTE_DISABLE_BACKGROUND_SERVICES` | boolean | `false` | ✓ | Disable all background services (quota refresh, sync, etc). |
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| `OMNIROUTE_RTK_TRUST_PROJECT_FILTERS` | boolean | `false` | | Trust project-level RTK filters without validation. |
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| `OMNIROUTE_ENABLE_LIVE_WS` | boolean | `true` | ✓ | Start the real-time dashboard WebSocket server on import (port 20129 by default). |
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| `OMNIROUTE_CODEX_WS_ENABLED` | boolean | `true` | | Allow Codex to use the Responses-over-WebSocket transport. When off, Codex falls back to HTTP Responses. |
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| `OMNIROUTE_EMERGENCY_FALLBACK` | boolean | `true` | | Route budget-exhausted requests to the emergency free fallback provider/model. (See [Emergency Budget Fallback](#emergency-budget-fallback) below.) |
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| `MODEL_CATALOG_INCLUDE_NAMES` | boolean | `true` | | Include display-friendly name fields in `/v1/models` responses. Disable for clients that expect model IDs only. |
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| `ARENA_ELO_SYNC_ENABLED` | boolean | `true` | | Enable periodic Arena AI leaderboard ELO sync for model intelligence rankings. |
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### CLI (3)
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| Key | Type | Default | Restart | Description |
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| ---------------------------- | ------- | ------- | ------- | -------------------------------------------------------------------------------------------------------------- |
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| `CLI_COMPAT_ALL` | boolean | `false` | ✓ | Enable compatibility mode for all CLI clients. |
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| `MODEL_ALIAS_COMPAT_ENABLED` | boolean | `false` | | Enable model alias compatibility layer. |
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| `PRICING_SYNC_ENABLED` | boolean | `false` | | Enable automatic pricing data synchronization (also requires the `PRICING_SYNC_ENABLED` environment variable). |
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### Health (3)
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| Key | Type | Default | Description |
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| ------------------------------------- | ------- | ------- | -------------------------------------------------------- |
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| `OMNIROUTE_DISABLE_LOCAL_HEALTHCHECK` | boolean | `false` | Disable the local instance health check endpoint. |
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| `OMNIROUTE_DISABLE_TOKEN_HEALTHCHECK` | boolean | `false` | Disable the token validation health check. |
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| `SKILLS_SANDBOX_NETWORK_ENABLED` | boolean | `false` | Enable network access in the skills sandbox environment. |
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> [!NOTE]
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> The `Restart` column marks flags with `requiresRestart: true` — the value is
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> persisted instantly but only takes effect after the process reloads. Enum
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> flags reject any value outside their allowed set (validated server-side in
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> both `setFeatureFlagOverride()` and the REST `PUT` handler).
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---
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## Toggling Flags
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### Dashboard
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Navigate to **Dashboard → Settings → Feature Flags**
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(`/dashboard/settings/feature-flags`). The grid
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(`src/app/(dashboard)/dashboard/settings/components/FeatureFlagsGrid.tsx`)
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supports:
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- **Search** by key or description, and **filter** by category (plus a synthetic
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**Requires Restart** view).
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- A **toggle** for boolean flags and a **dropdown** for enum flags
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(`src/app/(dashboard)/dashboard/settings/components/FeatureFlagCard.tsx`).
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- A **source badge** per flag — `DB`, `ENV`, or `DEF` — showing where the
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effective value came from.
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- A **Reset** button (shown only for `DB`-sourced flags) to drop the override,
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and a **Reset All Overrides** button at the bottom.
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- A **Restart Server** banner when a `requiresRestart` flag is changed.
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### REST API
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All operations go through a single route:
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[`src/app/api/settings/feature-flags/route.ts`](../../src/app/api/settings/feature-flags/route.ts).
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Every method requires an authenticated dashboard session (`401` otherwise).
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#### `GET /api/settings/feature-flags`
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Returns every flag with its effective value, source, and a summary.
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```jsonc
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{
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"flags": [
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{
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"key": "REQUIRE_API_KEY",
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"label": "Require API Key",
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"description": "Require an API key for all incoming requests",
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"category": "security",
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"type": "boolean",
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"enumValues": null,
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"defaultValue": "false",
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"effectiveValue": "false",
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"source": "default", // "db" | "env" | "default"
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"requiresRestart": false,
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"warningLevel": "caution",
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},
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// ... all 33 flags
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],
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"summary": {
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"total": 33,
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"active": 0,
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"inactive": 0,
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"overriddenByDb": 0,
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"overriddenByEnv": 0,
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},
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}
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```
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#### `PUT /api/settings/feature-flags`
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Set or remove a single override. Body: `{ key: string; value?: string }`.
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Omitting `value` removes the override (restoring env / default).
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```bash
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# Set a DB override
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curl -X PUT http://localhost:20128/api/settings/feature-flags \
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-H "Content-Type: application/json" \
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-d '{"key":"REQUIRE_API_KEY","value":"true"}'
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# Remove the override (no "value")
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curl -X PUT http://localhost:20128/api/settings/feature-flags \
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-H "Content-Type: application/json" \
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-d '{"key":"REQUIRE_API_KEY"}'
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```
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The response echoes the new `effectiveValue`/`source`, the `previousValue`/
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`previousSource`, and `requiresRestart`. Unknown keys and out-of-range enum
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values are rejected with `400`.
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#### `DELETE /api/settings/feature-flags`
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Clears **all** DB overrides at once, restoring every flag to its env / default
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value. Returns `{ cleared: <count>, message: "..." }`.
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> [!NOTE]
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> Flags with `requiresRestart: true` only take effect after a process reload.
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> The dashboard's restart flow calls `POST /api/restart` and then polls
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> `GET /api/health/ping` until the server is back up.
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---
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## Emergency Budget Fallback
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`OMNIROUTE_EMERGENCY_FALLBACK` (category `runtime`, default `true`) controls the
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emergency free-fallback path in
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[`open-sse/services/emergencyFallback.ts`](../../open-sse/services/emergencyFallback.ts).
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When enabled, requests that exhaust their budget are routed to a free fallback
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provider/model instead of failing outright. Set it to `false` (or `0`) — via the
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dashboard toggle, a DB override, or the `OMNIROUTE_EMERGENCY_FALLBACK`
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environment variable — to disable the behavior and let budget-exhausted requests
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fail. (Surfaced as a dashboard toggle in PRs #3741 / #3752.)
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---
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## See Also
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- [Environment Variables Reference](./ENVIRONMENT.md) — most flags have a
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same-named environment variable documented there (the DB override takes
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precedence over it).
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- [`src/shared/constants/featureFlagDefinitions.ts`](../../src/shared/constants/featureFlagDefinitions.ts)
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— source of truth for every flag.
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- [`src/shared/utils/featureFlags.ts`](../../src/shared/utils/featureFlags.ts)
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— resolution logic (`resolveFeatureFlag`, `isFeatureFlagEnabled`,
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`resolveAllFeatureFlags`).
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- [`src/lib/db/featureFlags.ts`](../../src/lib/db/featureFlags.ts) — DB override
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persistence in the `feature_flags` namespace of the `key_value` table.
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