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feat(sdk): add MCP (Model Context Protocol) client support #24

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4 changes: 4 additions & 0 deletions packages/core/src/chat/chat-controller.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,10 @@ export class ChatController {
this.#runtime.setProviderConfig(config);
}

reloadMcpTools() {
return this.#runtime.reloadMcpTools();
}

clearMessages() {
this.#runtime.clearMessages();
}
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118 changes: 118 additions & 0 deletions packages/core/src/chat/settings-panel.svelte
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Original file line number Diff line number Diff line change
Expand Up @@ -7,10 +7,13 @@
listFetchProviders,
listImageSearchProviders,
listSearchProviders,
loadMcpConfig,
loadOAuthCredentials,
loadSavedConfig,
loadWebConfig,
type McpServerConfig,
OAUTH_PROVIDERS,
saveMcpConfig,
removeOAuthCredentials,
saveConfig,
saveOAuthCredentials,
Expand Down Expand Up @@ -63,6 +66,40 @@
let exaApiKey = $state(savedWeb.apiKeys.exa || "");
let showAdvancedWebKeys = $state(false);

let mcpServers = $state<McpServerConfig[]>(loadMcpConfig(ns).servers ?? []);
let mcpStatus = $state("");
let mcpBusy = $state(false);

function addMcpServer() {
mcpServers.push({ name: "", url: "", enabled: true });
}

function removeMcpServer(index: number) {
mcpServers.splice(index, 1);
}

async function saveMcp() {
mcpBusy = true;
mcpStatus = "";
try {
const servers = mcpServers
.filter((s) => s.name.trim() && s.url.trim())
.map((s) => ({
name: s.name.trim(),
url: s.url.trim(),
enabled: s.enabled !== false,
}));
saveMcpConfig(ns, { servers });
const count = await chat.reloadMcpTools();
const active = servers.filter((s) => s.enabled).length;
mcpStatus = `Loaded ${count} tool${count === 1 ? "" : "s"} from ${active} server${active === 1 ? "" : "s"}.`;
} catch (error) {
mcpStatus = `Error: ${error instanceof Error ? error.message : String(error)}`;
} finally {
mcpBusy = false;
}
}

let oauthFlow = $state<OAuthFlowState>(
saved?.authMethod === "oauth"
? loadOAuthCredentials(ns, saved.provider)
Expand Down Expand Up @@ -882,6 +919,87 @@
/>
</div>

<div class="border-t border-(--chat-border) pt-4">
<div class="text-[10px] uppercase tracking-widest text-(--chat-text-muted) mb-4">
mcp servers
</div>

<div class="space-y-3">
{#if mcpServers.length > 0}
<div class="space-y-2">
{#each mcpServers as server, i (i)}
<div
class="space-y-2 px-3 py-2 bg-(--chat-input-bg) border border-(--chat-border)"
style="border-radius: var(--chat-radius)"
>
<div class="flex items-center gap-2">
<input
type="text"
bind:value={server.name}
placeholder="name (e.g. mssql-mate)"
class="flex-1 min-w-0 bg-(--chat-bg) text-(--chat-text-primary) text-xs px-2 py-1.5 border border-(--chat-border) focus:outline-none focus:border-(--chat-border-active)"
/>
<label
class="flex items-center gap-1 text-[10px] text-(--chat-text-muted) shrink-0"
>
<input type="checkbox" bind:checked={server.enabled} />
on
</label>
<button
type="button"
onclick={() => removeMcpServer(i)}
class="shrink-0 p-1 text-(--chat-text-muted) hover:text-(--chat-error) transition-colors"
title="Remove server"
>
<Trash2 size={12} />
</button>
</div>
<input
type="text"
bind:value={server.url}
placeholder="http://localhost:11501/mcp"
class="w-full bg-(--chat-bg) text-(--chat-text-primary) text-xs px-2 py-1.5 border border-(--chat-border) focus:outline-none focus:border-(--chat-border-active)"
/>
</div>
{/each}
</div>
{:else}
<p class="text-xs text-(--chat-text-muted)">No MCP servers configured</p>
{/if}

<div class="flex gap-2">
<button
type="button"
onclick={addMcpServer}
class="flex-1 flex items-center justify-center gap-1.5 px-3 py-2 text-xs bg-(--chat-input-bg) border border-(--chat-border) text-(--chat-text-secondary) hover:border-(--chat-border-active) hover:text-(--chat-text-primary) transition-colors"
style="border-radius: var(--chat-radius)"
>
<Plus size={12} />
Add Server
</button>
<button
type="button"
onclick={saveMcp}
disabled={mcpBusy}
class="flex-1 flex items-center justify-center gap-1.5 px-3 py-2 text-xs bg-(--chat-input-bg) border border-(--chat-border) text-(--chat-text-secondary) hover:border-(--chat-border-active) hover:text-(--chat-text-primary) disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
style="border-radius: var(--chat-radius)"
>
<Check size={12} />
{mcpBusy ? "Loading…" : "Save & Reload"}
</button>
</div>

{#if mcpStatus}
<p class="text-[10px] text-(--chat-text-secondary)">{mcpStatus}</p>
{/if}
<p class="text-[10px] text-(--chat-text-muted)">
Tools from each enabled MCP server are added to the agent. For an http://
server, point the URL at a localhost proxy (browsers block http from an
https page except on localhost).
</p>
</div>
</div>

<div class="border-t border-(--chat-border) pt-4">
<div class="text-[10px] uppercase tracking-widest text-(--chat-text-muted) mb-2">
about
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8 changes: 8 additions & 0 deletions packages/sdk/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,14 @@ export {
removeOAuthCredentials,
saveOAuthCredentials,
} from "./oauth";
// MCP (Model Context Protocol)
export {
loadMcpConfig,
loadMcpTools,
type McpConfig,
type McpServerConfig,
saveMcpConfig,
} from "./mcp";
export { loadPdfDocument } from "./pdf";
// Provider config
export {
Expand Down
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