PlainRouter
Inspect ad account health and first-party signal quality, then propose policy-gated optimizations for Meta ads.
Connects to Meta advertising accounts to diagnose event flow, match quality, and reconciliation gaps. Lets marketers review performance data, verify signal ingestion, propose budget or creative changes, and manage the approval workflow, all subject to workspace policies.
Try asking Muse: "Show me the health of my first-party conversion tracking over the last 30 days and suggest any creative tests I should run."
Source: Found in the official MCP Registry (com.plainrouter/mcp) · First listed September 24, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 7 min ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://plainrouter.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 1988ms. Worked in 100% of checks over 30 days.
Screening · September 24, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 29
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. platform_claimed_clicks means Meta outbound clicks. Days before 2026-06-29, or not re-read by the daily sync 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. In this release, canonical pause, resume, increase_budget, and decrease_budget action types execute only after a person approves the batch. Workspace policy can block a change dry_run_actionsPreview policy decisions and execution diffs for a proposed Action batch without writing it.list_actionsList proposed actions for the authorized workspace and advertising account.get_action_batchGet a proposed action batch for the authorized workspace and advertising account.get_actionGet one proposed action for the authorized workspace and advertising account.get_action_decision_receiptGet the persisted decision receipt for an authorized proposed action.get_action_policyGet the effective Actions policy for the authorized workspace without creating a policy row.get-creative-libraryReturn Meta image and video assets with the ads and last-30-day performance historically associated with each asset.launch.creatives.indexList creatives in the workspace bound to the authenticated execution token.launch.creatives.showShow one creative in the workspace bound to the authenticated execution token.launch.creatives.storeStore one JPEG, PNG, MP4, or QuickTime creative from strict base64 content in the token-bound workspace.launch.creatives.store-from-urlFetch and store one creative from a vetted HTTPS URL in the token-bound workspace.launch.creatives.statusSet the status of one creative in the workspace bound to the authenticated execution token.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.launch.plans.executeExecute one deployment plan in the workspace and ad account bound to the execution token; all provider mutations are proposed through Actions.launch.plans.showRead one deployment plan and its latest launch-intent status in the workspace and ad account bound to the execution token.launch.plans.listList deployment plans for the approved ad account.launch.plans.createCreate a deployment plan for the approved ad account.launch.plans.updateUpdate a deployment plan for the approved ad account.launch.plans.validateValidate a deployment plan for the approved ad account.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.get_install_instructionsReturn managed-hostname Path A installation material and first-arrival state for the authorized workspace. Returns no same-origin forwarding material.get_arrivals_comparisonReturn counted arrivals beside Meta outbound clicks for the authorized workspace and selected trailing window. Days before 2026-06-29, or not re-read by the daily sync since 2026-09-27, may still hold Meta link clicks or all clicks.Recent checks
Link
https://plainrouter.com/mcpQuestions about PlainRouter in Muse
How do I connect PlainRouter to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use PlainRouter to help me. It is a free service with an MCP server at https://plainrouter.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is PlainRouter working right now?
At the last check (September 28, 2026, 09:00 UTC) the endpoint was working, answering in 1988ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is PlainRouter safe to connect to Muse?
It was screened on September 24, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can PlainRouter do in Muse?
It exposes 29 tools, including get_account_state, get_signal_health, get_performance, verify_signal_ingestion. For example, you could ask Muse: "Show me the health of my first-party conversion tracking over the last 30 days and suggest any creative tests I should run."
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