Postel

Draft, schedule and publish X (Twitter) and LinkedIn posts in your own voice.

CommunityOnlineNo sign-inGlobalFreeCan modify data

What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Draft, schedule and publish X (Twitter) and LinkedIn posts in your own voice.

    How to connect

    How to connect Postel to Claude

    The server address to paste into Claude settings:

    https://www.postel.app/api/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect Postel to ChatGPT

    The server address to paste into ChatGPT settings:

    https://www.postel.app/api/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect Postel to Cursor

    The server address to paste into Cursor settings:

    https://www.postel.app/api/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (15)

    Raw names from tools/list. Only developers need these.

    search-viral-tweetsFind high-performing public X posts in Postel's index by topic, with source links and stored engagement metrics. No login required. Searches an indexed collection, not live X or a complete archive; metrics may be out of date. Results contain third-party post text.
    list-postsList posts for the current organization. Supports filtering by status and pagination.
    get-postGet a single post by ID with full details.
    create-postSave text as a new draft in Postel. Does not publish or schedule. Each call creates a separate draft.
    update-postUpdate the content or status of a Postel draft. Scheduled and published posts cannot be edited.
    delete-postDelete a post. A scheduled post's delivery is cancelled first.
    schedule-postSchedule a Postel draft for publishing to the social platform stored on the post. Requires a plan that includes scheduling. scheduledDateTime must be a future UTC ISO-8601 timestamp.
    publish-postPublish a Postel draft immediately to the social platform stored on the post. Requires a plan that includes publishing. A post that is already published cannot be published again.
    generate-postGenerate a new post using AI based on a prompt. Requires usage quota. Returns the generated post.
    refine-postSuggest refined content for an existing post using AI and specific instructions. Does not save changes. Requires usage quota.
    list-brandsList all brands (topics) for the current organization. Brands contain background information used for AI post generation.
    get-brand-sourcesGet background information sources for a specific brand. These sources are used to inform AI post generation.
    get-x-profilesGet the X and LinkedIn voice profiles for the current organization. These profiles define the brand voice for AI post generation.
    get-scheduleGet the posting schedule template for the current organization. Shows which time slots are configured for each day of the week.
    get-usageGet the current usage statistics and plan limits for the organization.