In-depth architectural comparison of the Vk MCP Server and Postfast MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Vk MCP Server
Social Media · Local stdio
Quality: 64/100 (Good) | Auth: API Key required
Postfast MCP
Social Media · Local stdio
Quality: 59/100 (Good) | Auth: other
Verdict Summary: Choose Vk MCP Server if you need specialized Social Media tools running via a local process. Choose Postfast MCP if your workspace requires Social Media integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose Vk MCP Server when:
You need dedicated capabilities in the Social Media domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Free / Open Source).
You have access to required keys: VK_ACCESS_TOKEN, VK_TIMEOUT_MS, VK_API_BASE.
MCP server for VK (VKontakte) social network API. Access users, walls, groups, friends, newsfeed, photos, and community stats.
Schedule and manage social media posts across 10 platforms (Instagram, Facebook, TikTok, X, LinkedIn, YouTube, Threads, Pinterest, Bluesky, Telegram) from any MCP-compatible AI assistant.
Category & Scope
Tools & Capabilities Breakdown
Vk MCP Server Tools (19)
vk_users_get
Look up VK users by numeric ID or short name (e.g. durov). Use this to resolve a name to an ID before calling other tools, or to check whether a profile is closed.
vk_users_search
Find VK users by name, optionally narrowed by city, country, sex or age. Returns matches with a total count; page through them with offset.
vk_wall_get
Read posts from a user or community wall, newest first. Pass domain for a short address (durov) or owner_id for a numeric one — negative for a community, positive for a person. Each post carries its likes, reposts, comments and views.
vk_wall_post
Publish a post on a wall. To post in a community, set owner_id to the community ID with a minus sign (-123) and from_group true, otherwise it appears as your personal post on the community wall. Attach media with the attachment string that vk_photos_upload_wall returns. Returns the new post_id.
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Vk MCP Server is categorized under Social Media and uses a local stdio subprocess. In contrast, Postfast MCP belongs to Social Media using local stdio subprocess. Select Vk MCP Server when you need capabilities focused on social media and Postfast MCP when you require tools for social media.
Add a comment to a post. owner_id is negative for a community. Returns the new comment_id.
vk_wall_get_by_id
Fetch particular posts by their full IDs in {owner_id}_{post_id} form, e.g. -1_340393. Use it to re-read a post you already know about, such as one you just published.
vk_wall_edit
Replace the text or attachments of an existing post. owner_id is negative for a community. Editing overwrites the previous content, so pass the full new text rather than an addition.
vk_wall_delete
Delete a post from a wall. owner_id is negative for a community. This cannot be undone.
vk_photos_upload_wall
Upload a photo so it can be attached to a post. Takes a URL or a local file path, runs VK's three-step upload, and returns an attachment string like photo-1_2 to pass to vk_wall_post or vk_wall_edit. group_id is positive here, without the minus sign.
vk_groups_search
Find communities by keyword, optionally narrowed by type, country, city or sort order. Returns matches with a total count.
vk_groups_get_members
List the members of a community. Returns bare user IDs unless you ask for fields, in which case it returns profiles. Many communities hide their member list, which comes back as an access error rather than an empty list.
vk_groups_join
Join a community as the token owner, or send a join request if it is closed. group_id is positive here, without the minus sign.
+7 more tools listed on main page
Postfast MCP Tools (24)
list_accounts
List connected social media accounts (each with `connectionStatus` — `CONNECTED`/`DISABLED` — `disabledReason`, `followerCount`/`followerCountUpdatedAt`, and `inboxCapable`)
list_posts
List posts with filters (specific IDs, platform, status, date range)
create_posts
Create and schedule posts (batch, up to 15)
delete_post
Delete a post from PostFast by ID (does not remove an already-published post from the platform)
upload_media
Upload a local file and get a media key (handles the full flow)
get_upload_urls
Get signed URLs to upload media files
list_pinterest_boards
Get Pinterest boards for an account
list_youtube_playlists
Get YouTube playlists for an account
list_gbp_locations
Get Google Business Profile locations for an account
search_places
Find a place to tag posts (the `id` works for both `facebookPlaceId` and `instagramLocationId`)
generate_connect_link
Generate a link for clients to connect accounts — optionally scoped to specific platforms, with a `redirectUrl` the user returns to (carrying `status`, `platform`, `accountId` and your own `externalId`)
get_post_analytics
Fetch published posts with performance metrics — Instagram, Facebook, TikTok, Threads, YouTube, LinkedIn (company pages), Pinterest (Business accounts)