flin-linkedin-posts-mcp 0.2.3

Local MCP server for authenticated LinkedIn member post snapshots

flin-linkedin-posts-mcp

flin-linkedin-posts-mcp is a local MCP server for reading and analyzing the authenticated member's own LinkedIn post/share data.

It uses LinkedIn member OAuth login and the Member Data Portability API. Each user runs the MCP locally, signs into their own LinkedIn account in the system browser, and stores their token on their own machine.

The MCP supports two login flows:

• Regular 3-legged OAuth with a client secret. This is the recommended local setup for most LinkedIn Developer apps.
• Native OAuth PKCE. This does not require a client secret, but LinkedIn must explicitly enable the Native PKCE protocol for your app.

Important Access Requirement

This MCP does not bypass LinkedIn API approval. Each user should create their own LinkedIn Developer app with access to Member Data Portability API (Member) and the r_dma_portability_self_serve permission. Without that product/scope, LinkedIn returns 403 ACCESS_DENIED for memberSnapshotData.

Native PKCE is a separate LinkedIn app capability. If LinkedIn shows Not enough permissions to access Native PKCE protocol, use the regular 3-legged OAuth setup below or ask LinkedIn to enable Native PKCE for the app.

Relevant LinkedIn docs:

• 3-legged OAuth: https://learn.microsoft.com/en-us/linkedin/shared/authentication/authorization-code-flow
• Native OAuth PKCE: https://learn.microsoft.com/en-us/linkedin/shared/authentication/authorization-code-flow-native
• Member Snapshot API: https://learn.microsoft.com/en-us/linkedin/dma/member-data-portability/shared/member-snapshot-api
• Snapshot domains: https://learn.microsoft.com/en-us/linkedin/dma/member-data-portability/shared/snapshot-domain
• API access overview: https://learn.microsoft.com/en-us/linkedin/shared/authentication/getting-access

Features

• Browser-based LinkedIn login with regular OAuth or native PKCE
• Local token storage outside the repository
• Auth status and logout tools
• Snapshot domain count/debug tool
• Authenticated member post/share listing from MEMBER_SHARE_INFO
• Post analysis for counts, text length, hashtags, mentions, and top terms

MCP Tools

1. auth_status
2. login
3. logout
4. list_snapshot_domains
5. list_member_posts
6. analyze_member_posts

Configuration

Required for login:

• LINKEDIN_CLIENT_ID: LinkedIn Developer app client ID

Recommended for regular 3-legged OAuth:

• LINKEDIN_CLIENT_SECRET: LinkedIn Developer app client secret. If set, LINKEDIN_OAUTH_FLOW defaults to authorization_code.
• LINKEDIN_REDIRECT_URI: exact local callback URI registered in the LinkedIn app, for example http://127.0.0.1:63141/callback.

Optional:

• LINKEDIN_OAUTH_FLOW: authorization_code or native_pkce. Defaults to authorization_code when LINKEDIN_CLIENT_SECRET is set, otherwise native_pkce.
• LINKEDIN_SCOPES: defaults to r_dma_portability_self_serve
• LINKEDIN_API_VERSION: defaults to 202312
• LINKEDIN_RESTLI_PROTOCOL_VERSION: defaults to 2.0.0
• LINKEDIN_TIMEOUT_SECONDS: defaults to 30
• LINKEDIN_MAX_RETRIES: defaults to 3
• LINKEDIN_OAUTH_TIMEOUT_SECONDS: defaults to 300
• LINKEDIN_TOKEN_FILE: defaults to ~/.flin-linkedin-posts-mcp/tokens.json

The MCP intentionally does not require LINKEDIN_ACCESS_TOKEN anymore. Tokens are created through the login tool.

LinkedIn Developer App Setup

1. Create or open a LinkedIn Developer app.
2. Add/obtain access to Member Data Portability API (Member).
3. Make sure the app can request r_dma_portability_self_serve.
4. For regular 3-legged OAuth, add an exact loopback redirect URL in the app's Auth tab, for example http://127.0.0.1:63141/callback.
5. Set LINKEDIN_CLIENT_ID, LINKEDIN_CLIENT_SECRET, and LINKEDIN_REDIRECT_URI to the same redirect URL.
6. For native PKCE only, ask LinkedIn to enable Native PKCE OAuth for the app, omit LINKEDIN_CLIENT_SECRET, and configure loopback redirect URIs as LinkedIn requires.

Claude Desktop Configuration

For a published package:

{
  "mcpServers": {
    "flin-linkedin-posts-mcp": {
      "command": "uvx",
      "args": ["--refresh", "flin-linkedin-posts-mcp@latest"],
      "env": {
        "LINKEDIN_CLIENT_ID": "<YOUR_LINKEDIN_CLIENT_ID>",
        "LINKEDIN_CLIENT_SECRET": "<YOUR_LINKEDIN_CLIENT_SECRET>",
        "LINKEDIN_REDIRECT_URI": "http://127.0.0.1:63141/callback",
        "LINKEDIN_SCOPES": "r_dma_portability_self_serve",
        "LINKEDIN_API_VERSION": "202312"
      }
    }
  }
}

For local development from this repository:

{
  "mcpServers": {
    "flin-linkedin-posts-mcp": {
      "command": "uv",
      "args": ["run", "flin-linkedin-posts-mcp"],
      "cwd": "/path/to/flin-linkedin-posts-mcp",
      "env": {
        "LINKEDIN_CLIENT_ID": "<YOUR_LINKEDIN_CLIENT_ID>",
        "LINKEDIN_CLIENT_SECRET": "<YOUR_LINKEDIN_CLIENT_SECRET>",
        "LINKEDIN_REDIRECT_URI": "http://127.0.0.1:63141/callback",
        "LINKEDIN_SCOPES": "r_dma_portability_self_serve",
        "LINKEDIN_API_VERSION": "202312"
      }
    }
  }
}

After adding the config, restart the MCP host and call:

1. auth_status
2. login
3. list_snapshot_domains
4. list_member_posts or analyze_member_posts

Local Development

python3 -m pip install -e '.[dev]'
pytest -q
ruff check .

Packaging

python3 -m build

The package entry point is:

flin-linkedin-posts-mcp

Troubleshooting

• LINKEDIN_CLIENT_ID is required before running login: set LINKEDIN_CLIENT_ID in the MCP config.
• Not enough permissions to access Native PKCE protocol: the LinkedIn app does not have Native PKCE enabled. Set LINKEDIN_CLIENT_SECRET and LINKEDIN_REDIRECT_URI to use regular 3-legged OAuth, or ask LinkedIn to enable Native PKCE for the app.
• LINKEDIN_REDIRECT_URI is required when LINKEDIN_OAUTH_FLOW=authorization_code: add the same exact local callback URL to the LinkedIn app's Auth tab and to the MCP config.
• 403 ACCESS_DENIED for partnerApiMemberSnapshotData: the LinkedIn Developer app/token likely does not have Member Data Portability API access or r_dma_portability_self_serve.
• LinkedIn token has expired: run login again. If LinkedIn issued a refresh token, the MCP attempts a refresh automatically before requiring login.
• Timed out waiting for LinkedIn OAuth callback: rerun login and complete the browser flow within LINKEDIN_OAUTH_TIMEOUT_SECONDS.

Notes

• The MCP reads only the authenticated member's own snapshot data.
• It does not support arbitrary-author LinkedIn post lookup.
• MEMBER_SHARE_INFO is snapshot/export-style data, so field names can vary. The normalizer is intentionally tolerant and keeps include_raw=true available for debugging.