Plan, render and post on-brand visual campaigns to social media with deterministic templates.
Visual marketing engine that generates on-brand images and videos for social posts. Connects to Twitter, Instagram, TikTok, LinkedIn and YouTube. Lets you build brand DNA, upload product assets, create mascots, and schedule posts with captions.
Try asking Muse: "Create and schedule a video announcement about our new feature for Instagram and TikTok next Tuesday at 9am."
Source: Found in the official MCP Registry (ai.mysiren/siren) · First listed September 24, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 6 h ago.
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
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://mcp.mysiren.ai/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Siren is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://mcp.mysiren.ai/mcpResponse time at the last check: 110ms. Worked in 99.5% of checks over 30 days.
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.
get_accountGet the connected Siren workspace: plan, key scopes, auto-post setting, and daily limit. Call this first to learn what the account can do before generating. Empty asset_types / channels / connected_accounts lists mean UNRESTRICTED, not missing — never stop on them. Films render olist_runsList the workspace's generation runs (newest first): status, brief, channel, asset URLs, and caption. Page with offset to see them all.get_runGet one run by id — full status, output text, asset URLs, caption, and any error. Poll this after create_campaign or render_asset until status is terminal. Wait `poll_after_seconds` between polls; `progress` and `eta_seconds` say how far along it is. A finished film carries `filmcreate_campaignCreate a Siren campaign from a plain-language brief — the full pipeline: plan, on-brand copy, deterministic render, verify. Returns the run; poll get_run until it finishes. Spends credits (image 10, an ad set of 3 images 20, video 25; voice or music-only is the same 25). Pass outlist_filmsThe film library, one ranked page at a time. Films sit on job shelves; pass job and the human's goal and hire from the top of the page. Each film says what it is, when to hire it, its length and shapes, fits_this_brand (with what is missing) and made_recently (this brand already list_platinum_filmsThe platinum shelf: studio-grade films that match a top motion studio's craft, told as the brand's own story. Each costs 50 credits, every time (a normal film is 25). Offer one only when the human is making a big launch they genuinely want to go far; everyday posts and normal budlist_stylesThe still style library, one ranked page at a time. Every painted still (an ad creative, poster, release card, App Store frame, thumbnail) is one style; Siren picks one when you don't. Styles sit on section shelves; pass section and the human's goal and take one from the top. maddescribe_filmThe full contract for one film: what it is and when to hire it, its body JSON Schema, a reference body, the seed envelope, media slots (which fields take image/video URLs), the brand prefills (colours, logo, screens) and the override rules. Call it before writing a render_asset bclarify_briefAsk Siren's clarifier whether a brief is specific enough to generate from. Returns ready=true/false plus follow-up questions. Use before create_campaign when the user's request is vague.render_assetRender films from pre-formed SirenSeed bodies (advanced). FILMS ONLY: images are painted from a brief, so for any image, ad or creative call create_campaign with asset_type=card (a still here returns 422 stills_use_a_brief). Each item: {output_type, channel, seed_body, archetype?upload_mediaStore a photo or video the human wants in a post, from an https URL or base64. Returns a workspace-owned URL to put in any media slot of a film body (describe_film lists the slots) — the renderer reads it directly. Images: PNG/JPG/WebP up to 15 MB. Videos: MP4/MOV/WebM up to 200 edit_assetEdit a finished ad creative in place. Only what the instruction names changes; faces, layout, lettering and every other pixel are kept, so you can chain edits (hair pink, then tail teal, then add a sign) without the picture drifting. About 15 seconds. 3 credits; an instruction thpost_runPost a finished run's assets to the workspace's CONNECTED SOCIAL ACCOUNT. This is live, public distribution on the customer's channel — always confirm with the user before calling. Only works if the grant was authorised with posting allowed. Pass `caption` to own the words; it goschedule_postSchedule a finished run to post at scheduled_at (ISO-8601). Shows in the customer's local timezone. platforms: x, instagram, tiktok, linkedin, youtube, or everything. Posts fire sequentially. Requires Allow posting. Prefer this over post_run when the user names a time. On create_get_brand_dnaGet this workspace's Brand DNA: brand_name, brand_kind, overview, tagline, offer, features, products, audience, palette, logos, plus `checks`: what to fix before rendering (thin Brand DNA, a typed accent the brand's own work does not use). Call right after get_account; fix thin Dupdate_brand_dnaPatch Brand DNA. Send only keys to change. Nested bags (offer, product_map, icp) merge. Examples: {tagline, overview, offer: {product_name, one_liner, features, who_its_for, primary_cta}, product_map: {offerings, how_we_work}, icp: {who_buys, pains}}. Does not read or write Brandlist_product_screensList the brand assets in Brand DNA: product photos, app screenshots, packaging. Each row has name, kind, description, use_when, tags, scan_status (scanning / ready / failed), device, theme, url.upload_product_screenUpload a brand asset (product photo, app screenshot, packaging) into Brand DNA and store it on R2. Pass image_url (https PNG/JPG/WebP) or image_base64. Two ways to file it: - Send `description` (and optionally kind, use_when, tags, name): Siren trusts your words and files the assupdate_product_screenEdit an existing brand asset: name, description, kind, use_when, and the screenshot tags (screen_type, device, theme).delete_product_screenRemove a product screenshot from Brand DNA. Does not delete Brand Memory.upload_logoSet the workspace logo in Brand DNA. Every render uses it.get_mascotThe workspace mascot: status (hero, keeping, frames, ready), the hero picture, tries left, and every pose frame with its URL. Null mascot = none yet.create_mascotStart the brand mascot: from a description (note, kind) or from a reference picture. Paid plans; 100 credits. Siren paints a hero in about a minute; poll get_mascot, show the human, then mascot_step keep (build the pose sheet) or retry (paint again, 3 tries). One mascot per worksmascot_stepMove the mascot on: keep the hero, paint it again, or add a pose. Ask the human before keep, since it builds the whole sheet.list_peopleThe people library: team faces Siren can put in stills (name, role, team, status cropping or ready, round crop URL).add_personAdd a face to the people library. Siren crops it round in a few seconds (status cropping, then ready). Only upload people who agreed.delete_personRemove a face from the people library.list_mediaPhotos and videos uploaded with upload_media, newest first, with their URLs. Reuse a URL in create_campaign media or a film body.get_performanceHow the posts did: totals (impressions, engagement, replies, engagement rate) and the top posts with views, likes and replies.list_postsEvery post Siren sent or queued: platform, status, live URL, time, and counts by status (posted, queued, failed).buy_creditsGet a Stripe checkout link for more credits. Give the link to the human; they pay on Stripe and the credits land in about a minute. Nothing is charged by this call. Read the balance on get_account.ads_overviewThe workspace's ads at a glance: spend today and this month against the caps, live campaigns, connected ad accounts, every campaign with its status and budget, and how many of Siren's suggestions are open. Call first for anything about ads. Ads need Pro and the owner's ads switchlist_ad_campaignsEvery ad campaign: platform, status (draft, launching, paused, active), daily budget, spend, clicks and results so far, plus the caps.get_ad_campaignOne ad campaign: its plan, the Page it runs as, and each ad with its creative (asset_url), shape, copy and status. Poll this after make_ads until every ad is ready, and after send_ads_to_platform until it is paused.ad_performanceHow the ads did: totals, each campaign and each ad with spend, impressions, clicks, results, click-through rate, cost per click and cost per result. Money is in minor units (cents).ad_account_balanceWhat each ad account has spent, its spending limit, what's left under it, and the platform's billing link. No app can add money to an ad account: to top up, give the human billing_url.get_ad_capsThe spend caps every change must fit (a day and a month, across all platforms), what's spent this month and the room left. Caps are raised only by the human on the Ads page, never by an agent.list_ad_suggestionsSiren's open suggestions from its daily review (pause an ad with no clicks, cut a costly one, give a winner more), each with its reason.ad_autopilotWhether autopilot is on, what it may do by itself (pause a weak ad, move a budget by up to 20%, inside the caps, once every 3 days per campaign) and whether the plan allows it (Scale). Read only: the human turns it on or off on the Ads page under Caps, never an agent.siren_helpLook up Siren itself: where something is in the app (pages, tabs, buttons), how a feature works, plans, prices, credits and policies. Returns up to 3 sections, each with its docs link and its place in the app (e.g. Ads → Sales). Call it before telling the human where to click or https://mcp.mysiren.ai/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Siren to help me. It is a free service with an MCP server at https://mcp.mysiren.ai/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.
At the last check (November 13, 2026, 09:00 UTC) the endpoint was working, answering in 110ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
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.
It exposes 40 tools, including get_account, list_runs, get_run, create_campaign. For example, you could ask Muse: "Create and schedule a video announcement about our new feature for Instagram and TikTok next Tuesday at 9am."
This listing was added from public sources (Found in the official MCP Registry (ai.mysiren/siren)). If you build Siren, claim it to correct the details and get your badge.
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