SI

Siren

ai.mysiren/siren

Deterministic visual marketing engine. Your agent plans, renders, and posts on-brand campaigns.

Yes, your AI can use this right now.Answered a live MCP handshake in 1856 ms with no sign-in needed and exposes 44 tools.

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URL: https://mcp.mysiren.ai/mcp

44 tools, verified live

Pulled straight from the server with tools/list on 2026-10-17.
get_accountread-only

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. Films render on every plan; credits are the only meter.

list_runsread-only

List the workspace's generation runs (newest first): status, brief, channel, asset URLs, and caption. Page with offset to see them all.

get_runread-only

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_check`, advice only: when `ok` is false, show the human the video and the findings and let them decide. Re-render at

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, an ad set of 3 images 20, video 25; voice or music-only is the same 25). Pass output_type to pin a film (list_films has the catalog); omit it and Siren picks. Optional scheduled_at (ISO-8601) queues

list_filmsread-only

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 got it: prefer another film on the shelf unless the human asked for that one). Page on with next_page. Want it all at on

list_platinum_filmsread-only

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 budgets use list_films. Say the price before you render. Ids end in -plt. Platinum needs a paid plan or a credit top-up: a

list_stylesread-only

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_recently = this brand already got that look, prefer another. To paint in a style, put its id in the create_campaign bri

describe_filmread-only

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 body.

clarify_briefread-only

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?, family?, surface?, caption?, voice_id?, music?, direction?, brand_override?}. Prefer create_campaign unless the user h

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 MB. The same bytes are stored once (content-hashed).

edit_asset

Edit 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 that asks for a whole new look ("make it a comic", "make it cinematic") repaints at 10. Returns the NEW run: poll get_run

post_runcan modify

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 goes out verbatim. The call queues the post behind a short publish window (about two minutes, cancellable) rather than f

schedule_postcan modify

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_campaign you can pass scheduled_at instead.

get_brand_dnaread-only

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 DNA first with update_brand_dna and upload_product_screen, or ask the human for the site. Not Brand Memory.

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 Memory.

list_product_screensread-only

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 asset as-is. No read. - Send only the file: Gemini reads the picture and writes name, kind, description, use_when, tag

update_product_screen

Edit an existing brand asset: name, description, kind, use_when, and the screenshot tags (screen_type, device, theme).

delete_product_screencan modify

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_mascotread-only

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 workspace.

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_peopleread-only

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_personcan modify

Remove a face from the people library.

list_mediaread-only

Photos and videos uploaded with upload_media, newest first, with their URLs. Reuse a URL in create_campaign media or a film body.

get_performanceread-only

How the posts did: totals (impressions, engagement, replies, engagement rate) and the top posts with views, likes and replies.

list_postsread-only

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_videosread-only

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 a brief names it ("launch film with our checkout demo"). Videos are for films; stills are painted from pictures.

delete_brand_videocan modify

Remove a clip from Brand DNA, file and poster included.

delete_mediacan modify

Delete one photo or video uploaded with upload_media. Only this workspace's uploads; a film that already rendered keeps its copy.

studio_templatesread-only

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_schedulecan modify

Render a Studio card then queue a ScheduledPost at scheduled_at.

studio_start

Start a video in Siren Studio from a description. Siren composes the first take (about 10 to 20 seconds) and replies with what it made; nothing is rendered or charged until studio_export. Returns the thread and Siren's reply. The human sees the same thread in Studio and can keep editing it there, or you can with studio_edit.

studio_edit

Change a Studio video by asking, as the human would in the chat. Only what the ask names changes; Siren replies with what it changed (before and after) and the new version number. Waits up to about 25 seconds for the reply. No credits are spent until studio_export. A greeting or a question gets an answer and no new version.

studio_getread-only

One Studio video: the chat so far (who said what, with diffs), every version, and which version is current.

studio_threadsread-only

The workspace's Studio videos, newest first: title, shelf, current version, and whether a human or an agent started it.

studio_export

Render a Studio design or video to files. Spends credits like any render: a video 25 (platinum 50), a card 10, a set 10 a slide (an App Store set of 6 is 60), charged once. A card or a set waits for the render (about a minute) and returns every file in `asset_urls`, slide 1 first; a video returns the run id: poll get_run until it is terminal, then show the human the file or post it with post_run.

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