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feat: Add GitLab Duo Agentic Chat Provider Support #7333

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feat: Add GitLab Duo Agentic Chat Provider Support #7333

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af0394b
feat: Added GitLab Duo Agentic chat provider
vglafirov Jan 8, 2026
4d0787a
fix: addressing code review comments
vglafirov Jan 9, 2026
183673f
Merge branch 'dev' into dev
vglafirov Jan 9, 2026
41f39ef
Merge branch 'dev' into dev
vglafirov Jan 9, 2026
0bc1beb
fix: move gitlab Duo documentation to providers.mdx
vglafirov Jan 10, 2026
0ee817c
Merge branch 'dev' into dev
vglafirov Jan 11, 2026
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119 changes: 119 additions & 0 deletions bun.lock
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3 changes: 3 additions & 0 deletions packages/opencode/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,9 @@
"@ai-sdk/vercel": "1.0.31",
"@ai-sdk/xai": "2.0.42",
"@clack/prompts": "1.0.0-alpha.1",
"@gitlab/gitlab-ai-provider": "3.0.9",
"@gitlab/opencode-gitlab-auth": "1.2.1",
"@gitlab/opencode-gitlab-plugin": "1.0.6",
"@hono/standard-validator": "0.1.5",
"@hono/zod-validator": "catalog:",
"@modelcontextprotocol/sdk": "1.25.2",
Expand Down
39 changes: 39 additions & 0 deletions packages/opencode/src/plugin/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,10 @@ import { Server } from "../server/server"
import { BunProc } from "../bun"
import { Instance } from "../project/instance"
import { Flag } from "../flag/flag"
import { Auth } from "../auth"
import { Env } from "../env"
import path from "path"
import os from "os"
import { CodexAuthPlugin } from "./codex"

export namespace Plugin {
Expand Down Expand Up @@ -44,6 +48,41 @@ export namespace Plugin {
if (!Flag.OPENCODE_DISABLE_DEFAULT_PLUGINS) {
plugins.push(...BUILTIN)
}

const shouldLoadGitLabPlugins = await (async () => {
if (config.provider?.["gitlab"]) return true

const auth = await Auth.get("gitlab")
if (auth) return true

const homeDir = os.homedir()
const xdgDataHome = process.env.XDG_DATA_HOME
const authPath = xdgDataHome
? path.join(xdgDataHome, "opencode", "auth.json")
: process.platform !== "win32"
? path.join(homeDir, ".local", "share", "opencode", "auth.json")
: path.join(homeDir, ".opencode", "auth.json")

const file = Bun.file(authPath)
if (await file.exists()) {
const authData = await file.json().catch((err) => {
log.debug("failed to parse auth.json for gitlab plugin check", { err })
return undefined
})
if (authData?.gitlab) return true
}

if (Env.get("GITLAB_TOKEN")) return true

return false
})()

if (shouldLoadGitLabPlugins && !Flag.OPENCODE_DISABLE_DEFAULT_PLUGINS) {
log.info("auto-loading GitLab plugins")
plugins.push("@gitlab/opencode-gitlab-auth@latest")
plugins.push("@gitlab/opencode-gitlab-plugin@latest")
}

for (let plugin of plugins) {
// ignore old codex plugin since it is supported first party now
if (plugin.includes("opencode-openai-codex-auth")) continue
Expand Down
260 changes: 260 additions & 0 deletions packages/opencode/src/provider/provider.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,6 @@
import z from "zod"
import path from "path"
import os from "os"
import fuzzysort from "fuzzysort"
import { Config } from "../config/config"
import { mapValues, mergeDeep, omit, pickBy, sortBy } from "remeda"
Expand Down Expand Up @@ -35,6 +37,7 @@ import { createGateway } from "@ai-sdk/gateway"
import { createTogetherAI } from "@ai-sdk/togetherai"
import { createPerplexity } from "@ai-sdk/perplexity"
import { createVercel } from "@ai-sdk/vercel"
import { createGitLab } from "@gitlab/gitlab-ai-provider"
import { ProviderTransform } from "./transform"

export namespace Provider {
Expand All @@ -60,6 +63,7 @@ export namespace Provider {
"@ai-sdk/togetherai": createTogetherAI,
"@ai-sdk/perplexity": createPerplexity,
"@ai-sdk/vercel": createVercel,
"@gitlab/gitlab-ai-provider": createGitLab,
// @ts-ignore (TODO: kill this code so we dont have to maintain it)
"@ai-sdk/github-copilot": createGitHubCopilotOpenAICompatible,
}
Expand Down Expand Up @@ -389,6 +393,95 @@ export namespace Provider {
},
}
},
async gitlab(input) {
const instanceUrl = Env.get("GITLAB_INSTANCE_URL") || "https://gitlab.com"

const loadOpenCodeAuth = async () => {
const homeDir = os.homedir()
const xdgDataHome = process.env.XDG_DATA_HOME
const authPath = xdgDataHome
? path.join(xdgDataHome, "opencode", "auth.json")
: process.platform !== "win32"
? path.join(homeDir, ".local", "share", "opencode", "auth.json")
: path.join(homeDir, ".opencode", "auth.json")

const file = Bun.file(authPath)
if (!(await file.exists())) return undefined

const authData = await file.json().catch((err) => {
log.debug("failed to parse auth.json", { err })
return undefined
})
if (!authData) return undefined

const gitlabAuth = authData.gitlab
if (!gitlabAuth) return undefined

if (gitlabAuth.type === "oauth") {
const authUrl = gitlabAuth.enterpriseUrl || "https://gitlab.com"
if (authUrl !== instanceUrl && authUrl !== instanceUrl.replace(/\/$/, "")) {
return undefined
}
return {
access: gitlabAuth.access,
refresh: gitlabAuth.refresh,
expires: gitlabAuth.expires,
}
}

if (gitlabAuth.type === "api") {
return { access: gitlabAuth.key }
}

return undefined
}

const auth = await Auth.get(input.id)
const creds = await (async () => {
if (auth?.type === "oauth") {
return { access: auth.access, refresh: auth.refresh, expires: auth.expires }
}
if (auth?.type === "api") {
return { access: auth.key }
}

const stored = await loadOpenCodeAuth()
if (stored) return stored

const envToken = Env.get("GITLAB_TOKEN")
if (envToken) return { access: envToken }

return undefined
})()

const config = await Config.get()
const providerConfig = config.provider?.["gitlab"]

return {
autoload: !!creds,
options: {
instanceUrl,
apiKey: creds?.access,
refreshToken: creds?.refresh,
featureFlags: {
duo_agent_platform_agentic_chat: true,
duo_agent_platform: true,
...(providerConfig?.options?.featureFlags || {}),
},
},
async getModel(sdk: ReturnType<typeof createGitLab>, modelID: string, options?: { anthropicModel?: string }) {
const anthropicModel = options?.anthropicModel
return sdk.agenticChat(modelID, {
anthropicModel,
featureFlags: {
duo_agent_platform_agentic_chat: true,
duo_agent_platform: true,
...(providerConfig?.options?.featureFlags || {}),
},
})
},
}
},
"cloudflare-ai-gateway": async (input) => {
const accountId = Env.get("CLOUDFLARE_ACCOUNT_ID")
const gateway = Env.get("CLOUDFLARE_GATEWAY_ID")
Expand Down Expand Up @@ -642,6 +735,173 @@ export namespace Provider {
}
}

// Add GitLab Duo provider with model metadata
// Will use models.dev data once PR #616 is merged
if (!database["gitlab"]) {
database["gitlab"] = {
id: "gitlab",
name: "GitLab Duo",
source: "custom",
env: ["GITLAB_TOKEN"],
options: {},
models: {
"duo-chat-haiku-4-5": {
id: "duo-chat-haiku-4-5",
providerID: "gitlab",
name: "Agentic Chat (Claude Haiku 4.5)",
family: "claude",
api: {
id: "duo-chat-haiku-4-5",
url: "https://gitlab.com",
npm: "@gitlab/gitlab-ai-provider",
},
status: "active",
capabilities: {
temperature: true,
reasoning: false,
attachment: false,
toolcall: true,
input: {
text: true,
audio: false,
image: false,
video: false,
pdf: false,
},
output: {
text: true,
audio: false,
image: false,
video: false,
pdf: false,
},
interleaved: false,
},
cost: {
input: 0,
output: 0,
cache: {
read: 0,
write: 0,
},
},
limit: {
context: 200000,
output: 8192,
},
options: {
anthropicModel: "claude-haiku-4-5-20251001",
},
headers: {},
release_date: "2026-01-08",
variants: {},
},
"duo-chat-sonnet-4-5": {
id: "duo-chat-sonnet-4-5",
providerID: "gitlab",
name: "Agentic Chat (Claude Sonnet 4.5)",
family: "claude",
api: {
id: "duo-chat-sonnet-4-5",
url: "https://gitlab.com",
npm: "@gitlab/gitlab-ai-provider",
},
status: "active",
capabilities: {
temperature: true,
reasoning: false,
attachment: false,
toolcall: true,
input: {
text: true,
audio: false,
image: false,
video: false,
pdf: false,
},
output: {
text: true,
audio: false,
image: false,
video: false,
pdf: false,
},
interleaved: false,
},
cost: {
input: 0,
output: 0,
cache: {
read: 0,
write: 0,
},
},
limit: {
context: 200000,
output: 8192,
},
options: {
anthropicModel: "claude-sonnet-4-5-20250929",
},
headers: {},
release_date: "2026-01-08",
variants: {},
},
"duo-chat-opus-4-5": {
id: "duo-chat-opus-4-5",
providerID: "gitlab",
name: "Agentic Chat (Claude Opus 4.5)",
family: "claude",
api: {
id: "duo-chat-opus-4-5",
url: "https://gitlab.com",
npm: "@gitlab/gitlab-ai-provider",
},
status: "active",
capabilities: {
temperature: true,
reasoning: false,
attachment: false,
toolcall: true,
input: {
text: true,
audio: false,
image: false,
video: false,
pdf: false,
},
output: {
text: true,
audio: false,
image: false,
video: false,
pdf: false,
},
interleaved: false,
},
cost: {
input: 0,
output: 0,
cache: {
read: 0,
write: 0,
},
},
limit: {
context: 200000,
output: 8192,
},
options: {
anthropicModel: "claude-opus-4-5-20251101",
},
headers: {},
release_date: "2026-01-08",
variants: {},
},
},
}
}

function mergeProvider(providerID: string, provider: Partial<Info>) {
const existing = providers[providerID]
if (existing) {
Expand Down
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