# Siren Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Siren

Plan, render and post on-brand visual campaigns to social media with deterministic templates.

- Record: https://musedirectory.ai/connector/siren
- Category: Marketing & Ads
- Developer: Hexahedral Inc
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 1428ms, checked 2026-09-28T08:01:37Z
- Endpoint: https://mcp.mysiren.ai/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-09-24T06:10:58Z)
- Source: Found in the official MCP Registry (ai.mysiren/siren) https://registry.modelcontextprotocol.io/v0/servers?search=ai.mysiren%2Fsiren

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.

Example request: "Create and schedule a video announcement about our new feature for Instagram and TikTok next Tuesday at 9am."

How to connect: Not 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.

Tools:
- get_account: Get 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. Film renders n
- list_runs: List the workspace's generation runs (newest first): status, brief, channel, asset URLs, and caption. Page with offset to see them all.
- get_run: Get 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 `film
- create_campaign: Create 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, video 25; voice or music-only is the same 25). Pass output_type to pin a film (li
- list_films: The 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_films: The 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 bud
- list_styles: The still style library, one ranked page at a time. Every painted still (an ad creative, poster, launch 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. made
- describe_film: The 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 b
- clarify_brief: Ask 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_asset: Render 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_media: Store 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 
- post_run: Post 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 go
- schedule_post: Schedule 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_dna: Get 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 D
- update_brand_dna: Patch 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 Brand
- list_product_screens: List 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_screen: Upload 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 ass
- update_product_screen: Edit an existing brand asset: name, description, kind, use_when, and the screenshot tags (screen_type, device, theme).
- delete_product_screen: Remove a product screenshot from Brand DNA. Does not delete Brand Memory.
- upload_logo: Set the workspace logo in Brand DNA. Every render uses it.
- get_mascot: The workspace mascot: status (hero, keeping, frames, ready), the hero picture, tries left, and every pose frame with its URL. Null mascot = none yet.
- create_mascot: Start 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 works
- mascot_step: Move 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_people: The people library: team faces Siren can put in stills (name, role, team, status cropping or ready, round crop URL).
- add_person: Add a face to the people library. Siren crops it round in a few seconds (status cropping, then ready). Only upload people who agreed.
- delete_person: Remove a face from the people library.
- list_media: Photos and videos uploaded with upload_media, newest first, with their URLs. Reuse a URL in create_campaign media or a film body.
- get_performance: How the posts did: totals (impressions, engagement, replies, engagement rate) and the top posts with views, likes and replies.
- list_posts: Every post Siren sent or queued: platform, status, live URL, time, and counts by status (posted, queued, failed).
- buy_credits: Get 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.
- list_brand_videos: The brand's own clips in Brand DNA: name, what each shows, when to use it, tags, best moments with timestamps, poster and scan_status.
- upload_brand_video: Add a product demo, walkthrough or footage to Brand DNA. With only the file, Gemini reads frames across the clip and writes what it shows, when to use it, tags and the best moments (scan_status scanning, then ready in about 15 seconds; poll list_brand_videos). Films play it when 
- delete_brand_video: Remove a clip from Brand DNA, file and poster included.
- delete_media: Delete one photo or video uploaded with upload_media. Only this workspace's uploads; a film that already rendered keeps its copy.
- studio_templates: List Siren Studio's 33 React data-card types with family, description, and body schema. Use this before studio_card so the body matches.
- studio_card: Render a Studio data card from a type + body. Deterministic React, no paint. Optional live post after render. Returns run_id, image url, and post url when posted.
- studio_automate: Create a Studio profile on this API key. Returns generate curl and inbound hook URLs (Stripe, GitHub, Uptime Kuma, Product Hunt, generic). Passing delivery.social_account_ids turns on social delivery for the profile — that publishes, so it requires Allow posting.
- studio_schedule: Render a Studio card then queue a ScheduledPost at scheduled_at.

Screening checks:
- MCP handshake: pass (Answered in 80ms)
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.mysiren.ai not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (36 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)