PlainRouter

Inspect an approved ad account and first-party signal health, then propose policy-gated actions.

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What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Inspect an approved ad account and first-party signal health, then propose policy-gated actions.

    How to connect

    How to connect PlainRouter to Claude

    The server address to paste into Claude settings:

    https://plainrouter.com/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 PlainRouter to ChatGPT

    The server address to paste into ChatGPT settings:

    https://plainrouter.com/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 PlainRouter to Cursor

    The server address to paste into Cursor settings:

    https://plainrouter.com/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 (10)

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

    get_account_stateReturn the authorized advertising account, workspace, connection, Signal destination, and currently available read-only capabilities.
    get_signal_healthDiagnostic view of first-party event flow, Meta delivery outcomes, match quality, and reconciliation gaps from Plainrouter stored measurements. Not admissible evidence for spend-affecting proposals. Does not call the Marketing API.
    get_performanceAdmissible proposal evidence comparing Meta-reported conversions with gateway-verified accepted conversions, plus the latest stored daily Meta spend and delivery metrics.
    verify_signal_ingestionVerify server-side Signal ingestion by writing one idempotent, identity-free modeled event for the authorized workspace. This confirms ledger receipt but does not count as real arrival evidence or complete onboarding. No spend capability.
    propose-actionsPropose a batch of budget, status, upload, or creative-duplication actions for the approved ad account. Budget and status proposals are recommendations only; their execution is disabled in this release. Supported JPEG/PNG uploads and paused ad copies require human approval and workspace policy checks. Suggest-only approval never executes them.
    get-creative-libraryReturn Meta image and video assets with the ads and last-30-day performance historically associated with each asset.
    upload-assetStage a JPEG/PNG image and submit a canonical upload action through the policy and approval gate.
    duplicate-ad-with-creativeSubmit a canonical proposal to duplicate a source Meta ad with a different creative asset. Approved copies are always created PAUSED.
    show_spend_cap_approvalRender the static spend-cap approval preview card. Reads and writes nothing.
    revoke_grantRevoke an active workspace grant. The caller must hold the revoke_grant scope in the same workspace or be the human delegator of the granted agent.