Deterministic visual marketing engine. Your agent plans, renders, and posts on-brand campaigns.
Connect Remote server
claude mcp add --transport http siren https://mcp.mysiren.ai/mcp{
"mcpServers": {
"siren": {
"url": "https://mcp.mysiren.ai/mcp"
}
}
}{
"servers": {
"siren": {
"type": "http",
"url": "https://mcp.mysiren.ai/mcp"
}
}
}Settings > Connectors > Add custom connector
URL: https://mcp.mysiren.ai/mcpTools 67 found in our last check
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…
list_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 `fil…
create_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 ou…
list_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 bu…
list_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. ma…
describe_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…
clarify_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 t…
post_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 g…
schedule_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…
update_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 Bran…
list_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 as…
update_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 work…
mascot_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 switc…
list_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…
ad_conversionsSales tracking: whether the Siren tag has been seen on the site, events this week, the Meta pixel, other platforms it sends to, Stripe, and money made back in 30 days (minor units). Read only.
tracking_setupThe whole Sales tracking setup as one Markdown brief for the site's developer: the tag with this workspace's key (before </head> on every page), the sign-up and purchase calls, consent, how to check it on Ads → Sales, and where the tag goes in Next.js, React/Vite, Webflow, Frame…
ad_audiencesThe customer list and lookalike audiences on Meta: how many people Siren knows, each audience's size and status. Read only; the human makes audiences on the Ads page.
ad_testsSplit tests: the ones running with each version's numbers, and every verdict so far (the winner, its rate, how sure).
ad_alertsWhat needs the human now (rejected ads, spend spikes, account problems, cap pauses), and what cleared in the last 30 days.
boost_postBoost any post Siren made: it becomes a Meta ad with its own picture or video and caption, sent PAUSED. No credits; nothing spends until go_live_ad_campaign and the human's yes. Pass the run_id, or a post_id from list_posts (each row says boosted_campaign_id once it is). With ne…
plan_adsSiren drafts an ad plan from one prompt: goal, audience, budget inside the caps, platforms and the ads to make (shape, hook, headline, text). Nothing is made or spent. Show the human the plan, then make_ads. With test, the versions split one budget and the verdict rule is set be…
make_adsMake the plan's ads: a draft campaign per platform, and Siren renders each ad (spends credits like any video or ad creative; tell the human first). Nothing reaches the platform yet. Poll get_ad_campaign.
send_ads_to_platformSend a ready draft to its platform: campaign, ad set and ads are created PAUSED. Nothing spends until go_live_ad_campaign. Poll get_ad_campaign: launching, then paused (or draft with launch_error).
go_live_ad_campaignTurn a campaign on: real ad money starts. Always two calls. The first returns status needs_confirm and a summary (per day, the most this month, the caps): show it to the human word for word. Only when they say yes, call again with the confirm code. Inside the caps only.
pause_ad_campaignPause (turn off) a campaign now. Always allowed: it only stops spend.
set_ad_budgetChange a campaign's daily budget, inside the caps. Lowering applies now. Raising a live campaign answers needs_confirm first: show the human the summary, then call again with the code.
decide_ad_suggestionApply or dismiss one of Siren's suggestions. One that raises spend answers needs_confirm first, like set_ad_budget.
list_brand_videosThe 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_videoAdd 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_videoRemove a clip from Brand DNA, file and poster included.
delete_mediaDelete one photo or video uploaded with upload_media. Only this workspace's uploads; a film that already rendered keeps its copy.
studio_templatesList Siren Studio's 33 React data-card types with family, description, and body schema. Use this before studio_card so the body matches.
studio_cardRender 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_automateCreate 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_scheduleRender a Studio card then queue a ScheduledPost at scheduled_at.
studio_startStart 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…
studio_editChange 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…
studio_getOne Studio video: the chat so far (who said what, with diffs), every version, and which version is current.
studio_design_packThe design tokens behind a Studio design, for building in the same language: palette, fonts, radius and shadow as `tokens`; `css` (custom properties plus a Tailwind v4 @theme block); `tailwind` (a v3 theme); and `skill_md`, a short rules file to drop into the project so the agen…
studio_threadsThe workspace's Studio videos, newest first: title, shelf, current version, and whether a human or an agent started it.
studio_exportRender 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 firs…
Details
| Endpoint | https://mcp.mysiren.ai/mcp (Streamable HTTP) |
| First published | 9 Sep 2026 |
| Last updated | 9 Sep 2026 |
| Registry name | ai.mysiren/siren |
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