diff --git a/docs/AI-GATEWAY-CONFIG.md b/docs/AI-GATEWAY-CONFIG.md index ac944c6..8c6d2a2 100644 --- a/docs/AI-GATEWAY-CONFIG.md +++ b/docs/AI-GATEWAY-CONFIG.md @@ -1,6 +1,6 @@ # AI Gateway Proxy — Configuration Guide -The AI Gateway Worker proxies LLM requests from the OpenClaw gateway to Anthropic and OpenAI. Provider credentials are stored per-user in Cloudflare KV and managed via the self-service `/config` UI. +The AI Gateway Worker proxies LLM requests from the OpenClaw gateway to upstream LLM providers. Supports Anthropic, OpenAI, and 11 additional OpenAI-compatible providers (DeepSeek, Groq, Mistral, Together, xAI, OpenRouter, Perplexity, Cohere, Fireworks, MiniMax, Moonshot). Provider credentials are stored per-user in Cloudflare KV and managed via the self-service `/config` UI. The worker supports two upstream routing modes, auto-detected based on which secrets are configured. @@ -32,7 +32,7 @@ The worker auto-detects which mode to use: if `CF_AI_GATEWAY_TOKEN`, `CF_AI_GATE Visit the config UI at `https:///config` and authenticate with your gateway token. -The config page supports four credential types: +The config page supports four credential types for the legacy providers, plus API key fields for 11 additional providers under the collapsible "Additional Providers" section: | Provider | Credential | Field | Notes | |----------|-----------|-------|-------| @@ -40,10 +40,13 @@ The config page supports four credential types: | Anthropic | OAuth Token | `sk-ant-oat-*` | Claude Code subscription token (takes priority over API key) | | OpenAI | API Key | `sk-*` | Standard API key | | OpenAI | Codex OAuth | Paste `.codex/auth.json` | Codex subscription (takes priority over API key, auto-refreshes) | +| Additional | API Key | Per-provider | Cohere, DeepSeek, Fireworks, Groq, MiniMax, Mistral, Moonshot, OpenRouter, Perplexity, Together, xAI | Credentials are stored in Cloudflare KV — they never touch the VPS. Changes take effect immediately. -For each provider, OAuth/subscription credentials take priority over static API keys. You can have both configured as a fallback. +For Anthropic and OpenAI, OAuth/subscription credentials take priority over static API keys. You can have both configured as a fallback. + +Additional providers use `/proxy/{provider}/v1/...` routes (e.g., `/proxy/deepseek/v1/chat/completions`). --- @@ -116,6 +119,15 @@ curl -s https:///openai/v1/chat/completions \ -d '{"model":"gpt-4o-mini","max_tokens":10,"messages":[{"role":"user","content":"Say hi"}]}' ``` +### Test a generic provider (e.g., DeepSeek) + +```bash +curl -s https:///proxy/deepseek/v1/chat/completions \ + -H "Authorization: Bearer " \ + -H "Content-Type: application/json" \ + -d '{"model":"deepseek-chat","max_tokens":10,"messages":[{"role":"user","content":"Say hi"}]}' +``` + ### Verify CF AI Gateway analytics (CF AI Gateway mode only) 1. Go to **Cloudflare Dashboard** -> **AI** -> **AI Gateway** -> your gateway diff --git a/docs/PROPOSAL-GENERIC-PROVIDERS.md b/docs/PROPOSAL-GENERIC-PROVIDERS.md new file mode 100644 index 0000000..43f7554 --- /dev/null +++ b/docs/PROPOSAL-GENERIC-PROVIDERS.md @@ -0,0 +1,147 @@ +# Proposal: feat/generic-providers — Universal Multi-Provider LLM Gateway + +**Status:** Implemented +**Branch:** `feat/generic-providers` +**Depends on:** None + +--- + +## Problem + +The AI Gateway Worker routes requests to 3 hardcoded providers (Anthropic, OpenAI, OpenAI-Codex). Adding a new provider requires code changes. + +--- + +## Goal + +Generalize the Worker into a universal authenticated LLM proxy — 11 additional OpenAI-compatible providers, zero code changes per provider. + +--- + +## Value + +- **11 additional providers** (DeepSeek, Groq, Mistral, Together, xAI, OpenRouter, Perplexity, Cohere, Fireworks, MiniMax, Moonshot) available through a single authenticated endpoint +- **Centralized credential management** — all provider API keys in Cloudflare KV, managed via the existing `/config` UI +- **Single gateway token** — clients authenticate once; the Worker resolves the real provider key per request +- **Unified telemetry** — all provider traffic logged through Llemtry, regardless of upstream provider +- **Security boundary** — real API keys never leave KV; clients only see the gateway token +- **No external dependencies** — works immediately with OpenClaw's existing `models.providers` config + +Users can add a DeepSeek or Groq key via the Config UI and start using those providers from OpenClaw within minutes. + +--- + +## Architecture + +``` +OpenClaw agent + → AI Gateway Worker (Cloudflare) + [validates gateway token, fetches provider key from KV] + → Real provider API (DeepSeek, Groq, Mistral, etc.) +``` + +OpenClaw's `models.providers` config points at `/proxy/{provider}` routes on the Worker: + +```jsonc +// openclaw.jsonc +"models": { + "providers": { + "deepseek": { + "baseUrl": "${AI_GATEWAY_URL}/proxy/deepseek", + "models": [] + } + } +} +``` + +--- + +## Provider Support + +11 generic providers (all OpenAI-compatible). Z.AI excluded — its path (`/api/paas/v4/`) is incompatible with the standard `/v1/` pattern. + +| Provider | Base URL | Auth | Notes | +|-------------|---------------------------------------|--------|-------------------------| +| cohere | `https://api.cohere.ai/compatibility` | Bearer | `/compatibility` prefix | +| deepseek | `https://api.deepseek.com` | Bearer | Standard | +| fireworks | `https://api.fireworks.ai/inference` | Bearer | `/inference` prefix | +| groq | `https://api.groq.com/openai` | Bearer | `/openai` prefix | +| minimax | `https://api.minimax.io` | Bearer | Standard | +| mistral | `https://api.mistral.ai` | Bearer | Standard | +| moonshot | `https://api.moonshot.ai` | Bearer | `.ai` not `.cn` | +| openrouter | `https://openrouter.ai/api` | Bearer | `/api` prefix | +| perplexity | `https://api.perplexity.ai` | Bearer | No `/v1/models` | +| together | `https://api.together.xyz` | Bearer | Standard | +| xai | `https://api.x.ai` | Bearer | Standard | + +All 11 use `Authorization: Bearer `. No provider-specific headers required. + +Plus 3 existing legacy providers (anthropic, openai, openai-codex) on their existing static routes. + +### URL Construction + +``` +Request: POST /proxy/groq/v1/chat/completions + ──── ───────────────────────── + provider directPath + +Target: https://api.groq.com/openai/v1/chat/completions + ───────────────────────────── ───────────────────── + PROVIDER_DEFAULTS["groq"] directPath +``` + +Base URLs do NOT include `/v1` — the `directPath` from route matching provides it. + +### Allowed Endpoints (whitelist) + +- `POST /proxy/{provider}/v1/chat/completions` +- `POST /proxy/{provider}/v1/embeddings` +- `GET /proxy/{provider}/v1/models` + +No `v1/responses` (OpenAI-specific). No `v1/messages` (Anthropic-specific). + +--- + +## Implementation + +### Files changed + +| File | Change | +|------|--------| +| `types.ts` | `LegacyProvider` type alias, `GenericRouteMatch` export, `providers` field on `UserCredentials` | +| `routing.ts` | `GENERIC_PROVIDERS` set, `GENERIC_ENDPOINTS` whitelist, `matchGenericRoute()` | +| `config.ts` | `PROVIDER_DEFAULTS` record (11 base URLs), `getGenericProviderConfig()` | +| `keys.ts` | `getGenericApiKey()` reads from `creds.providers[provider].apiKey` | +| `providers/generic.ts` | New — OpenAI-compatible passthrough proxy | +| `index.ts` | Generic route handling: auth → key lookup → `proxyGeneric()` → Llemtry | +| `admin.ts` | `mergeCredentials`/`maskCredentials` extended for `providers` field | +| `config-ui.ts` | Collapsible "Additional Providers" section, 11 API key fields | +| `llemtry.ts` | `ReportOptions.provider` widened to `string` | + +### KV Schema (additive, no migration) + +```json +{ + "anthropic": { "apiKey": "...", "oauthToken": "..." }, + "openai": { "apiKey": "...", "oauth": { ... } }, + "providers": { + "deepseek": { "apiKey": "..." }, + "groq": { "apiKey": "..." } + } +} +``` + +### Security + +- **Endpoint whitelist:** 3 paths only — no arbitrary upstream path probing +- **Provider whitelist:** 11 known providers — no proxying to arbitrary hosts +- **No key, no call:** 401 if `apiKey` is falsy after KV lookup +- **Token isolation:** Gateway token never forwarded — fresh `Authorization` built from KV key +- **KV isolation:** `providers.*` namespace can't collide with legacy keys + +### Backward Compatibility + +- Existing static routes unchanged +- Existing KV credential format unchanged — `providers` is additive +- Existing OAuth flows unchanged +- Legacy code paths untouched — generic uses separate functions diff --git a/workers/ai-gateway/README.md b/workers/ai-gateway/README.md index 047a78f..75025b3 100644 --- a/workers/ai-gateway/README.md +++ b/workers/ai-gateway/README.md @@ -1,13 +1,13 @@ # AI Gateway Proxy Worker -Cloudflare Worker that proxies LLM API calls to Anthropic and OpenAI. Sits between the OpenClaw gateway and providers without changing request/response formats. Routes directly to provider APIs by default, or optionally through [Cloudflare AI Gateway](https://developers.cloudflare.com/ai-gateway/) for observability, caching, and rate limiting. +Cloudflare Worker that proxies LLM API calls to upstream providers. Supports 3 legacy providers (Anthropic, OpenAI, OpenAI-Codex) on static routes and 11 generic OpenAI-compatible providers (DeepSeek, Groq, Mistral, Together, xAI, OpenRouter, Perplexity, Cohere, Fireworks, MiniMax, Moonshot) via `/proxy/{provider}/...` routes. Routes directly to provider APIs by default, or optionally through [Cloudflare AI Gateway](https://developers.cloudflare.com/ai-gateway/) for observability, caching, and rate limiting. ``` Direct mode (default): - OpenClaw Gateway → Worker (auth, key swap) → Anthropic / OpenAI + OpenClaw Gateway → Worker (auth, key swap) → Provider API CF AI Gateway mode (optional): - OpenClaw Gateway → Worker (auth, URL rewrite) → Cloudflare AI Gateway → Anthropic / OpenAI + OpenClaw Gateway → Worker (auth, URL rewrite) → Cloudflare AI Gateway → Provider API ``` Streaming works transparently — request and response bodies are passed through as `ReadableStream` without parsing. @@ -29,6 +29,9 @@ Streaming works transparently — request and response bodies are passed through | `/openai/v1/embeddings` | POST | User token | OpenAI proxy | | `/openai/v1/models` | GET | User token | OpenAI proxy | | `/anthropic/v1/messages` | POST | User token | Anthropic proxy | +| `/proxy/{provider}/v1/chat/completions` | POST | User token | Generic provider proxy | +| `/proxy/{provider}/v1/embeddings` | POST | User token | Generic provider proxy | +| `/proxy/{provider}/v1/models` | GET | User token | Generic provider proxy | ## Auth diff --git a/workers/ai-gateway/src/admin.ts b/workers/ai-gateway/src/admin.ts index 53eab25..27f5249 100644 --- a/workers/ai-gateway/src/admin.ts +++ b/workers/ai-gateway/src/admin.ts @@ -380,6 +380,14 @@ function maskCredentials(creds: UserCredentials): Record { if (Object.keys(o).length > 0) result.openai = o } + if (creds.providers) { + const p: Record = {} + for (const [name, entry] of Object.entries(creds.providers)) { + if (entry.apiKey) p[name] = { apiKey: maskString(entry.apiKey) } + } + if (Object.keys(p).length > 0) result.providers = p + } + return result } @@ -437,6 +445,33 @@ function mergeCredentials( } } + if ('providers' in update) { + if (update.providers === null) { + delete result.providers + } else { + const u = update.providers as Record + if (!result.providers) result.providers = {} + for (const [name, value] of Object.entries(u)) { + if (value === null) { + delete result.providers[name] + } else { + const entry = value as Record + if ('apiKey' in entry) { + if (entry.apiKey === null) { + delete result.providers[name] + } else { + result.providers[name] = { apiKey: entry.apiKey as string } + } + } + } + } + // Clean up empty providers section + if (Object.keys(result.providers).length === 0) { + delete result.providers + } + } + } + return result } diff --git a/workers/ai-gateway/src/config-ui.ts b/workers/ai-gateway/src/config-ui.ts index 5010104..6f18695 100644 --- a/workers/ai-gateway/src/config-ui.ts +++ b/workers/ai-gateway/src/config-ui.ts @@ -124,6 +124,67 @@ const CONFIG_HTML = /* html */ ` +
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@@ -239,6 +300,10 @@ const CONFIG_HTML = /* html */ ` try { const update = buildUpdate(); + if (!update) { + btn.disabled = false; + return; + } if (Object.keys(update).length === 0) { showStatus('#save-status', 'No changes to save', 'error'); btn.disabled = false; @@ -274,38 +339,58 @@ const CONFIG_HTML = /* html */ ` function buildUpdate() { const update = {}; + let hasError = false; document.querySelectorAll('[data-field]').forEach(el => { + if (hasError) return; const path = el.dataset.field; const input = el.querySelector('input, textarea'); const state = fieldState[path] || {}; const newVal = input.value.trim(); - const [provider, key] = path.split('.'); - if (!update[provider]) update[provider] = {}; - - if (state.cleared) { - // Send null to delete - update[provider][key] = null; - } else if (newVal) { - // Parse Codex auth JSON for openai.oauth - if (path === 'openai.oauth') { - const parsed = parseCodexAuth(newVal); - if (parsed.error) { - showStatus('#save-status', parsed.error, 'error'); - return; + const segments = path.split('.'); + + if (segments.length === 3) { + // 3-segment path: providers.{name}.apiKey + const [root, name, key] = segments; + if (!update[root]) update[root] = {}; + if (!update[root][name]) update[root][name] = {}; + if (state.cleared) { + update[root][name][key] = null; + } else if (newVal) { + update[root][name][key] = newVal; + } + // Clean up empty nested objects + if (Object.keys(update[root][name]).length === 0) delete update[root][name]; + if (Object.keys(update[root]).length === 0) delete update[root]; + } else { + // 2-segment path: {provider}.{key} + const [provider, key] = segments; + if (!update[provider]) update[provider] = {}; + + if (state.cleared) { + update[provider][key] = null; + } else if (newVal) { + if (path === 'openai.oauth') { + const parsed = parseCodexAuth(newVal); + if (parsed.error) { + showStatus('#save-status', parsed.error, 'error'); + hasError = true; + return; + } + update[provider][key] = parsed.value; + } else { + update[provider][key] = newVal; } - update[provider][key] = parsed.value; - } else { - update[provider][key] = newVal; } } - // Absent = no change (omit from update) }); + if (hasError) return null; + // Remove provider keys with no actual changes for (const provider of Object.keys(update)) { - if (Object.keys(update[provider]).length === 0) { + if (typeof update[provider] === 'object' && Object.keys(update[provider]).length === 0) { delete update[provider]; } } diff --git a/workers/ai-gateway/src/config.ts b/workers/ai-gateway/src/config.ts index 84b9772..727e33c 100644 --- a/workers/ai-gateway/src/config.ts +++ b/workers/ai-gateway/src/config.ts @@ -16,6 +16,20 @@ export interface ProviderConfig { * Change these to any upstream provider or proxy endpoints: Azure, AWS Bedrock, etc. * Defaults to using Cloudflare AI Gateway if env vars are configured. */ +export function buildCodexHeaders(vars: { + EGRESS_PROXY_AUTH_TOKEN?: string + CF_ACCESS_CLIENT_ID?: string + CF_ACCESS_CLIENT_SECRET?: string +}): Record | undefined { + const h: Record = {} + if (vars.EGRESS_PROXY_AUTH_TOKEN) h['X-Proxy-Auth'] = `Bearer ${vars.EGRESS_PROXY_AUTH_TOKEN}` + if (vars.CF_ACCESS_CLIENT_ID && vars.CF_ACCESS_CLIENT_SECRET) { + h['CF-Access-Client-Id'] = vars.CF_ACCESS_CLIENT_ID + h['CF-Access-Client-Secret'] = vars.CF_ACCESS_CLIENT_SECRET + } + return Object.keys(h).length > 0 ? h : undefined +} + export function getProviderConfig(provider: string): ProviderConfig { // Cloudflare AI Gateway (optional): // Provides observability and token cost estimates, LLM routing, and more. @@ -43,19 +57,47 @@ export function getProviderConfig(provider: string): ProviderConfig { return { baseUrl: 'https://chatgpt.com/backend-api', egressProxyUrl: env.EGRESS_PROXY_URL || undefined, - headers: env.EGRESS_PROXY_AUTH_TOKEN - ? { - 'X-Proxy-Auth': `Bearer ${env.EGRESS_PROXY_AUTH_TOKEN}`, - // CF Access service token — authenticates to Cloudflare Zero Trust - ...(env.CF_ACCESS_CLIENT_ID && { - 'CF-Access-Client-Id': env.CF_ACCESS_CLIENT_ID, - 'CF-Access-Client-Secret': env.CF_ACCESS_CLIENT_SECRET, - }), - } - : undefined, + headers: buildCodexHeaders(env), } default: return { baseUrl: '' } } } + +// --- Generic provider defaults --- + +/** Verified base URLs for generic OpenAI-compatible providers. + * Base URLs do NOT include /v1 — the directPath from route matching provides it. + * e.g. Groq: baseUrl="https://api.groq.com/openai" + "/v1/chat/completions" */ +export const PROVIDER_DEFAULTS: Record = { + cohere: { baseUrl: 'https://api.cohere.ai/compatibility' }, + deepseek: { baseUrl: 'https://api.deepseek.com' }, + fireworks: { baseUrl: 'https://api.fireworks.ai/inference' }, + groq: { baseUrl: 'https://api.groq.com/openai' }, + minimax: { baseUrl: 'https://api.minimax.io' }, + mistral: { baseUrl: 'https://api.mistral.ai' }, + moonshot: { baseUrl: 'https://api.moonshot.ai' }, + openrouter: { baseUrl: 'https://openrouter.ai/api' }, + perplexity: { baseUrl: 'https://api.perplexity.ai' }, + together: { baseUrl: 'https://api.together.xyz' }, + xai: { baseUrl: 'https://api.x.ai' }, +} + +/** Look up the config for a generic provider. Returns null for unknown providers. + * Uses CF AI Gateway when configured (same as legacy providers). + * Does NOT inherit the egress proxy — EGRESS_PROXY_URL is scoped to openai-codex. */ +export function getGenericProviderConfig(provider: string): ProviderConfig | null { + const defaults = PROVIDER_DEFAULTS[provider] + if (!defaults) return null + + const useCfGateway = env.CF_AI_GATEWAY_TOKEN && env.CF_AI_GATEWAY_ID && env.CF_AI_GATEWAY_ACCOUNT_ID + if (useCfGateway) { + return { + baseUrl: `https://gateway.ai.cloudflare.com/v1/${env.CF_AI_GATEWAY_ACCOUNT_ID}/${env.CF_AI_GATEWAY_ID}`, + headers: { 'cf-aig-authorization': `Bearer ${env.CF_AI_GATEWAY_TOKEN}` }, + } + } + + return { baseUrl: defaults.baseUrl } +} diff --git a/workers/ai-gateway/src/index.ts b/workers/ai-gateway/src/index.ts index d69a488..e1036a2 100644 --- a/workers/ai-gateway/src/index.ts +++ b/workers/ai-gateway/src/index.ts @@ -1,11 +1,11 @@ import { authenticateRequest, validateAdminToken } from './auth' -import { getProviderConfig } from './config' +import { getProviderConfig, getGenericProviderConfig } from './config' import { handlePreflight, addCorsHeaders } from './cors' import { jsonError } from './errors' import { isLlemtryEnabled, isLlmRoute, reportGeneration } from './llemtry' import { createLog, logInboundRequest } from './log' -import { matchProviderRoute } from './routing' -import { getProviderApiKey } from './keys' +import { matchProviderRoute, matchGenericRoute } from './routing' +import { getProviderApiKey, getGenericApiKey } from './keys' import { handleAdminRequest, handleTokenRotation, @@ -16,6 +16,7 @@ import { import { serveConfigPage } from './config-ui' import { proxyOpenAI } from './providers/openai' import { proxyAnthropic } from './providers/anthropic' +import { proxyGeneric } from './providers/generic' export default { async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise { @@ -93,37 +94,92 @@ export default { return addCorsHeaders(jsonError('Invalid or missing auth credentials', 401)) } - // Route to provider + // Route to provider — try legacy routes first, then generic /proxy/{provider}/... const route = matchProviderRoute(request.method, pathname) - if (!route) { + const genericRoute = route ? null : matchGenericRoute(request.method, pathname) + + if (!route && !genericRoute) { console.error(`No route match: ${request.method} ${pathname}`) return addCorsHeaders(jsonError(`Route not implemented in AI Gateway: ${pathname}`, 404)) } - const apiKey = await getProviderApiKey(route.provider, userId, env.AUTH_KV, log) + // --- Generic provider route --- + if (genericRoute) { + const apiKey = await getGenericApiKey(genericRoute.provider, userId, env.AUTH_KV, log) + if (!apiKey) { + return addCorsHeaders(jsonError(`No API key configured for ${genericRoute.provider}`, 401)) + } + + const providerConfig = getGenericProviderConfig(genericRoute.provider) + if (!providerConfig) { + return addCorsHeaders(jsonError(`Unknown provider: ${genericRoute.provider}`, 404)) + } + + // CF AI Gateway uses a different path format: {provider}/chat/completions (no /v1/) + const isGateway = providerConfig.baseUrl.includes('gateway.ai.cloudflare.com') + const upstreamPath = isGateway + ? `${genericRoute.provider}/${genericRoute.directPath.replace('v1/', '')}` + : genericRoute.directPath + + const llemtryActive = isLlemtryEnabled(env, log) && isLlmRoute(genericRoute.directPath) + const startTime = llemtryActive ? new Date() : undefined + const requestBody = llemtryActive ? await request.text() : undefined + + let response = await proxyGeneric( + apiKey, + request, + providerConfig, + upstreamPath, + log, + genericRoute.provider, + requestBody + ) + + if (llemtryActive && response.ok && response.body) { + const statusCode = response.status + const responseHeaders = new Headers(response.headers) + const [clientStream, reportStream] = response.body.tee() + response = new Response(clientStream, response) + + ctx.waitUntil( + reportGeneration(env, log, { + provider: genericRoute.provider, + requestBody: requestBody!, + responseStream: reportStream, + responseHeaders, + statusCode, + startTime: startTime!, + }) + ) + } + + return addCorsHeaders(response) + } + + // --- Legacy provider route --- + const apiKey = await getProviderApiKey(route!.provider, userId, env.AUTH_KV, log) if (!apiKey) { - console.error(`No API key configured for ${route.provider}: ${request.method} ${route}`) - return addCorsHeaders(jsonError(`No API key configured for ${route.provider}`, 500)) + return addCorsHeaders(jsonError(`No API key configured for ${route!.provider}`, 401)) } if (env.LOG_LEVEL === 'debug') { - logInboundRequest(log, request, route, apiKey) + logInboundRequest(log, request, route!, apiKey) } - const providerConfig = getProviderConfig(route.provider) + const providerConfig = getProviderConfig(route!.provider) // CF AI Gateway uses a different path format (strips /v1/, adds provider prefix) const isGateway = providerConfig.baseUrl.includes('gateway.ai.cloudflare.com') - const upstreamPath = isGateway ? route.gatewayPath : route.directPath + const upstreamPath = isGateway ? route!.gatewayPath : route!.directPath // When llemtry is enabled for an LLM route, pre-read the request body // so it can be shared with both the proxy function and llemtry reporting - const llemtryActive = isLlemtryEnabled(env, log) && isLlmRoute(route.directPath) + const llemtryActive = isLlemtryEnabled(env, log) && isLlmRoute(route!.directPath) const startTime = llemtryActive ? new Date() : undefined const requestBody = llemtryActive ? await request.text() : undefined let response: Response - if (route.provider === 'anthropic') { + if (route!.provider === 'anthropic') { response = await proxyAnthropic( apiKey, request, @@ -163,7 +219,7 @@ export default { ctx.waitUntil( reportGeneration(env, log, { - provider: route.provider, + provider: route!.provider, requestBody: requestBody!, responseStream: reportStream, responseHeaders, diff --git a/workers/ai-gateway/src/keys.ts b/workers/ai-gateway/src/keys.ts index 989f467..a0fbdff 100644 --- a/workers/ai-gateway/src/keys.ts +++ b/workers/ai-gateway/src/keys.ts @@ -1,29 +1,37 @@ -import type { Log, Provider } from './types' -import type { UserCredentials } from './types' +import type { Log, Provider, UserCredentials } from './types' import { refreshOpenAIToken } from './openai-oauth' const REFRESH_BUFFER_MS = 5 * 60 * 1000 // refresh 5 min before expiry -/** Resolve the upstream API key for a provider from the user's KV credentials. */ -export async function getProviderApiKey( - provider: Provider, +/** Load and parse user credentials from KV. Returns undefined on missing or invalid data. */ +async function loadCredentials( userId: string, kv: KVNamespace, log: Log -): Promise { +): Promise { const raw = await kv.get(`creds:${userId}`) if (!raw) { log.warn(`[keys] no credentials in KV for user ${userId}`) return undefined } - let creds: UserCredentials try { - creds = JSON.parse(raw) + return JSON.parse(raw) } catch { log.error(`[keys] failed to parse credentials for user ${userId}`) return undefined } +} + +/** Resolve the upstream API key for a provider from the user's KV credentials. */ +export async function getProviderApiKey( + provider: Provider, + userId: string, + kv: KVNamespace, + log: Log +): Promise { + const creds = await loadCredentials(userId, kv, log) + if (!creds) return undefined if (provider === 'anthropic') { return resolveAnthropicKey(creds, log) @@ -84,3 +92,18 @@ async function resolveOpenAIKey( if (!key) log.warn('[keys] no OpenAI credentials found for user') return key } + +/** Resolve the API key for a generic provider from the user's KV credentials. */ +export async function getGenericApiKey( + provider: string, + userId: string, + kv: KVNamespace, + log: Log +): Promise { + const creds = await loadCredentials(userId, kv, log) + if (!creds) return undefined + + const key = creds.providers?.[provider]?.apiKey + if (!key) log.warn(`[keys] no ${provider} credentials found for user ${userId}`) + return key +} diff --git a/workers/ai-gateway/src/llemtry.ts b/workers/ai-gateway/src/llemtry.ts index 7a684da..b876957 100644 --- a/workers/ai-gateway/src/llemtry.ts +++ b/workers/ai-gateway/src/llemtry.ts @@ -1,4 +1,4 @@ -import type { Log, Provider } from './types' +import type { Log } from './types' const MAX_OUTPUT_BYTES = 100 * 1024 // 100KB @@ -265,7 +265,7 @@ async function parseOpenAIStream(stream: ReadableStream): Promise responseHeaders: Headers diff --git a/workers/ai-gateway/src/providers/generic.ts b/workers/ai-gateway/src/providers/generic.ts new file mode 100644 index 0000000..47036b8 --- /dev/null +++ b/workers/ai-gateway/src/providers/generic.ts @@ -0,0 +1,43 @@ +import type { ProviderConfig, Log } from '../types' +import { sanitizeHeaders, truncateBody } from '../log' + +/** Proxy the request to a generic OpenAI-compatible provider. */ +export async function proxyGeneric( + apiKey: string, + request: Request, + config: ProviderConfig, + path: string, + log: Log, + provider: string, + preReadBody?: string +): Promise { + const targetUrl = `${config.baseUrl}/${path}` + + const headers = new Headers(request.headers) + + // Replace gateway auth token with the real provider API key + headers.set('Authorization', `Bearer ${apiKey}`) + + // Strip Cloudflare-injected metadata headers that shouldn't reach upstream providers + for (const key of [...headers.keys()]) { + if (key.startsWith('cf-')) headers.delete(key) + } + + // Set provider-config headers (e.g. cf-aig-authorization for CF AI Gateway mode) + if (config.headers) { + for (const [key, value] of Object.entries(config.headers)) { + headers.set(key, value) + } + } + + const body = preReadBody ?? await request.text() + log.debug(`[${provider}] url=${targetUrl}`) + log.debug(`[${provider}] upstream headers`, sanitizeHeaders(headers)) + log.debug(`[${provider}] request body`, truncateBody(body)) + + return fetch(targetUrl, { + method: request.method, + headers, + body: request.method !== 'GET' ? body : undefined, + }) +} diff --git a/workers/ai-gateway/src/providers/openai.ts b/workers/ai-gateway/src/providers/openai.ts index 08e3d70..d767fe8 100644 --- a/workers/ai-gateway/src/providers/openai.ts +++ b/workers/ai-gateway/src/providers/openai.ts @@ -17,6 +17,11 @@ export async function proxyOpenAI( // Replace auth token with OpenAI API key headers.set('Authorization', `Bearer ${apiKey}`) + // Strip Cloudflare-injected metadata headers that shouldn't reach upstream providers + for (const key of [...headers.keys()]) { + if (key.startsWith('cf-')) headers.delete(key) + } + // Set provider-config headers (e.g. cf-aig-authorization for gateway mode, // X-Proxy-Auth for egress proxy) if (config.headers) { @@ -26,16 +31,13 @@ export async function proxyOpenAI( } // When egress proxy is configured, wrap the target URL in the proxy URL - // and strip CF-injected headers that shouldn't reach the upstream + // and strip additional proxy-revealing headers const url = config.egressProxyUrl ? `${config.egressProxyUrl}?_proxyUpstreamURL_=${encodeURIComponent(targetUrl)}` : targetUrl if (config.egressProxyUrl) { - for (const h of [ - 'host', 'cf-connecting-ip', 'cf-ipcountry', 'cf-ray', 'cf-visitor', - 'x-real-ip', 'x-forwarded-proto', 'x-forwarded-for', - ]) { + for (const h of ['host', 'x-real-ip', 'x-forwarded-proto', 'x-forwarded-for']) { headers.delete(h) } } @@ -48,6 +50,6 @@ export async function proxyOpenAI( return fetch(url, { method: request.method, headers, - body, + body: request.method !== 'GET' ? body : undefined, }) } diff --git a/workers/ai-gateway/src/routing.ts b/workers/ai-gateway/src/routing.ts index 2b0e8a0..85dd4a0 100644 --- a/workers/ai-gateway/src/routing.ts +++ b/workers/ai-gateway/src/routing.ts @@ -8,6 +8,13 @@ export interface RouteMatch { directPath: string } +/** Route match for generic OpenAI-compatible providers via /proxy/{provider}/... */ +export interface GenericRouteMatch { + provider: string + /** Direct API path including v1/ prefix (e.g. "v1/chat/completions") */ + directPath: string +} + /** Method allowed per provider-prefixed route (pathname without leading slash). */ const ROUTES: Record = { // Anthropic @@ -64,3 +71,45 @@ export function matchProviderRoute(method: string, pathname: string): RouteMatch directPath: override?.directPath ?? toDirectPath(key), } } + +// --- Generic provider routing (OpenAI-compatible) --- + +import { PROVIDER_DEFAULTS } from './config' + +/** Known generic providers (derived from PROVIDER_DEFAULTS). Requests to unknown providers are rejected. */ +export const GENERIC_PROVIDERS = new Set(Object.keys(PROVIDER_DEFAULTS)) + +/** Whitelisted endpoints for generic providers: directPath → allowed method. */ +const GENERIC_ENDPOINTS: Record = { + 'v1/chat/completions': 'POST', + 'v1/embeddings': 'POST', + 'v1/models': 'GET', +} + +/** + * Match a /proxy/{provider}/{rest} request to a generic provider route. + * Returns null if the provider is unknown or the endpoint is not whitelisted. + */ +export function matchGenericRoute(method: string, pathname: string): GenericRouteMatch | null { + // Strip leading slash, split into segments: ["proxy", provider, ...rest] + const path = pathname.startsWith('/') ? pathname.slice(1) : pathname + const firstSlash = path.indexOf('/') + if (firstSlash === -1) return null + + const prefix = path.slice(0, firstSlash) + if (prefix !== 'proxy') return null + + const rest = path.slice(firstSlash + 1) + const secondSlash = rest.indexOf('/') + if (secondSlash === -1) return null + + const provider = rest.slice(0, secondSlash) + const directPath = rest.slice(secondSlash + 1) + + if (!GENERIC_PROVIDERS.has(provider)) return null + + const allowed = GENERIC_ENDPOINTS[directPath] + if (!allowed || allowed !== method) return null + + return { provider, directPath } +} diff --git a/workers/ai-gateway/src/types.ts b/workers/ai-gateway/src/types.ts index 0d50b23..eac06e8 100644 --- a/workers/ai-gateway/src/types.ts +++ b/workers/ai-gateway/src/types.ts @@ -23,6 +23,8 @@ export interface UserCredentials { expiresAt: number // epoch ms } } + /** Generic OpenAI-compatible providers (deepseek, groq, mistral, etc.) */ + providers?: Record } export interface UserEntry {