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Siren

REMOTE · MCP.MYSIREN.AI

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

Available components

+1 this week 91 Trust /100

Last scanned (21 hours ago)

Scores higher than 99% of remote servers

Reachable. Last reached 16 Oct 2026.

Category Marketing and SEO

Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security91
  • The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
  • Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
  • HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
  • HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
  • DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
  • The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability100
Schema Quality & AI Usability68
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 7682 tokens (~174/item across 44 items; 44 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
  • No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
  • Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • All 4 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
  • An AI judge read all 45 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 14 Oct 26 0
    • Tool “create_campaign” rewrote its description, which is the text the model reads security
    • “create_campaign” added an optional parameter “variants” cosmetic
    • “list_films” added an optional parameter “for_brand” cosmetic
  • 10 Oct 26 +1
    • Stability: 0.93 → pass security
  • 7 Oct 26 +2

    No change was recorded against any check on this day. Stability & Change Management went from 83 to 93. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

  • 4 Oct 26 0
    • Tool “get_account” rewrote its description, which is the text the model reads security
  • 3 Oct 26 +1
    • Tool “list_films” rewrote its description, which is the text the model reads security
  • 1 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

  • 29 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

  • 28 Sept 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 16 Oct 2026 · Probed https://mcp.mysiren.ai/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_256_GCM_SHA384 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=mcp.mysiren.ai CN=YE1,O=Let's Encrypt,C=US 20 Aug 2026 18 Nov 2026 ECDSA 256 ECDSA-SHA384 61b71f7a76196e0e76a154cc653c46dfe9e
SANs: mcp.mysiren.ai
CN=YE1,O=Let's Encrypt,C=US (CA) CN=Root YE,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 ECDSA 384 ECDSA-SHA384 5ddd70dd31f801c85c186a7a04b80afe
CN=Root YE,O=ISRG,C=US (CA) CN=ISRG Root X2,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 ECDSA-SHA384 872165fc34b6e5fba8add5b3705fb53a
CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) CN=ISRG Root X1,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 SHA256-RSA 6c8f1dc727c7117f7baf853ac980f9cd

Background: What to check on a remote MCP endpoint →

DNSSEC secure

Validation of mcp.mysiren.ai. — Secure

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
ai. present 3799 8 Verified
mysiren.ai. present 2371 13 Verified
mcp.mysiren.ai. Verified address RRset verified with the apex keys
Authentication Enforced and verified

The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.

Result Enforced and verified
Enforced On tool calls
HTTP status 200

WWW-Authenticate challenge Bearer resource_metadata="https://mcp.mysiren.ai/.well-known/oauth-protected-resource/mcp"

Bearer resource_metadata="https://mcp.mysiren.ai/.well-known/oauth-protected-resource/mcp"

Protected resource metadata

Document https://mcp.mysiren.ai/.well-known/oauth-protected-resource/mcp
Retrieved Yes
Resource https://mcp.mysiren.ai/mcp
Authorisation server https://mcp.mysiren.ai

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://mcp.mysiren.ai/mcp Verified 200
http (plaintext) http://mcp.mysiren.ai/mcp HTTPS enforced 301 https://mcp.mysiren.ai/mcp
MCP tools · 44 exposed · ~7,435 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
add_person ~119

Add a face to the people library. Siren crops it round in a few seconds (status cropping, then ready). Only upload people who agreed.

NameTypeReqDescription
image_base64––The portrait as base64, if you have no URL.
image_url––Public https URL of a portrait (PNG, JPG or WebP), one face.
namestring–The person's name.
rolestring–Their role, e.g. Founder, Head of Design.
teamstring–Their team, if any.

Structured output declared, but exposes no named fields.

No examples provided.

buy_credits ~106

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.

NameTypeReqDescription
credits––Or a custom amount, 50 to 5000, at $0.20 each.
pack_id––small (50 credits, $9.99), medium (100, $20) or large (300, $50).

Structured output declared, but exposes no named fields.

No examples provided.

clarify_brief ~75

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.

NameTypeReqDescription
briefstringyesPlain-language request for the post, e.g. "announce the new export feature, use the dashboard screenshot".

Structured output declared, but exposes no named fields.

No examples provided.

create_campaign ~1,137

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 a sequential post (X → Instagram → TikTok, or platforms you pass) when the render succeeds — requires Allow posting. Fails with a 402 upgrade message if the plan or balance can't cover it. FILM KNOBS: voiceover (true narrated / false music only), direction (mood, pace, motion, music in one line), music (a bed id), media (upload_media URLs the film shows). Images ignore the film knobs: Siren writes and paints them from the brief and Brand DNA. ANY BRAND: pass `brand` to make it for a brand that is not this workspace's own, e.g. brand={"name": "Acme", "site": "acme.com", "logo_url": "https://acme.com/logo.png", "primary": "#FF4400"}. Nothing of this workspace's identity leaks in. The exact same request within 24 hours returns the run it already started, as it is now, with replayed=true and no new charge. Change the brief to make another.

NameTypeReqDescription
asset_typestring–What to make: card (still image) or video.
brand––Make it for ANOTHER brand instead of this workspace's own (a client, a brand people recognise, a side project). Object: {name (required), site, logo_url (https PNG/SVG/JPG of the brand's MARK or app…
briefstringyesPlain-language request for the post, e.g. "announce the new export feature, use the dashboard screenshot".
caption––Optional caption for the post this run becomes. Your words are kept; omit and Siren writes the caption.
channel––Omit to cut one render per connected platform, up to the credit balance and the plan cap (Spark stops at 2). Pass twitter, instagram, linkedin, tiktok, or youtube for a single cut. A shape named in t…
direction––Films: one free line on mood, pace, motion and music, e.g. "emotional, slow, soft piano" or "dark, club energy, fast cuts".
media––Films: URLs from upload_media (images and videos) for the film to show. Omit and the film shows the brand's recent work. Images (asset_type=card): photos from upload_media are painted into the creati…
music––Films: a music bed track_id. Omit and the bed follows the film and the direction.
output_type––Optional film to pin, e.g. "story" or "pitch". Call list_films to browse; describe_film for the contract. Omit and Siren picks the format from the brief.
platforms––Where to post: any of x, instagram, tiktok, linkedin, youtube, or ["everything"] for every connected channel.
scheduled_at––ISO-8601 time to post, e.g. 2026-09-12T09:00:00. Interpreted in the given timezone.
timezonestring–IANA timezone name for scheduled_at, e.g. Africa/Lagos or America/New_York.
variantsinteger–Images only. 3 makes an ad set: the same creative with three different headlines, for testing hooks on paid feeds. 20 credits for the three instead of 10 for one. get_run then returns all three in as…
voiceover––Films: true = narrated in the brand voice, false = motion + music only. Omit and the brief decides; if the human never said, ask them once.

Structured output declared, but exposes no named fields.

No examples provided.

create_mascot ~237

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.

NameTypeReqDescription
image_base64––The reference picture as base64, if you have no URL.
image_url––A reference picture of the mascot (https PNG/JPG/WebP). Siren paints it in the brand's style, keeping the character.
kindstring–auto (Siren picks from the brand), animal, creature, object, robot, food, or abstract.
namestring–The mascot's name, if the human has one.
notestring–Describe the character in the human's words: what it is, colours, personality, what to avoid. Up to 280 characters.
stylestring–Material: vinyl (default), clay, plush, wool, or glossy.

Structured output declared, but exposes no named fields.

No examples provided.

delete_brand_video ~35

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

NameTypeReqDescription
video_idstringyesId from list_brand_videos.

Structured output declared, but exposes no named fields.

No examples provided.

delete_media ~52

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

NameTypeReqDescription
urlstringyesThe URL upload_media returned (or one from list_media).

Structured output declared, but exposes no named fields.

No examples provided.

delete_person ~28

Remove a face from the people library.

NameTypeReqDescription
person_idstringyesId from list_people.

Structured output declared, but exposes no named fields.

No examples provided.

delete_product_screen ~41

Remove a product screenshot from Brand DNA. Does not delete Brand Memory.

NameTypeReqDescription
screen_idstringyesId of the brand asset from list_product_screens.

Structured output declared, but exposes no named fields.

No examples provided.

describe_film ~102

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.

NameTypeReqDescription
output_typestringyesFilm id from list_films, e.g. "story", "pitch", "gallery".

Structured output declared, but exposes no named fields.

No examples provided.

edit_asset ~229

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 until it is terminal and show the human the new image. Films are not edited this way: re-render them with render_asset. Every earlier version stays, so the human can go back to any of them.

NameTypeReqDescription
instructionstringyesWhat to change, in plain words: "make her hair pink", "swap the mug for a laptop", "fix the spelling of the headline". Name one or two changes; everything else stays.
run_idstringyesA finished ad creative (painted still) to change: the run id from create_campaign, get_run or list_runs.

Structured output declared, but exposes no named fields.

No examples provided.

get_account ~79

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.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

get_brand_dna ~103

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.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

get_mascot ~48

The workspace mascot: status (hero, keeping, frames, ready), the hero picture, tries left, and every pose frame with its URL. Null mascot = none yet.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

get_performance ~56

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

NameTypeReqDescription
windowstring–7d, 30d or 90d.

Structured output declared, but exposes no named fields.

No examples provided.

get_run ~260

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 most once, and only for a defect you can name in what you sent (a missing image, a wrong name). `notices` are plain-words notes on the request (e.g. it asked for a mood the brand's look does not wear): the asset is made as asked; pass the note to the human. A finished run carries `caption`: the post caption Siren wrote in the run's brand (or yours, if you passed one); show it with the asset. After post_run, `posts[]` carries each platform's status and, once it fires, the live URL and the caption that went out.

NameTypeReqDescription
run_idstringyesThe run id returned by create_campaign, render_asset, or list_runs.

Structured output declared, but exposes no named fields.

No examples provided.

list_brand_videos ~43

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.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

list_films ~602

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 once? all=true, or fetch the catalog file (https://api.mysiren.ai/api/v1/films.md, every film by shelf, also .txt/.json) and read it in steps. search= finds films by word. Then describe_film for the body. Videos are on every plan; credits are the only limit. Every film here is 25 credits. Platinum films (50 credits) are not in these pages: the answer's platinum section flags them, and list_platinum_films has the shelf.

NameTypeReqDescription
allboolean–true = every film that passes the filters on one page (about 10k tokens for the whole library). Prefer job + page, or the catalog.md file.
aspect––Only films that render this shape: wide-desktop, square-ig, story-reel, vertical-ig-feed.
detailstring–"short" (default) or "full" to add the long description per film.
for_brand––The brand name you will pass in create_campaign brand_override, when the video is for a brand other than this workspace. fits_this_brand then judges that brand (no mascot, people or screens of this w…
goal––The human's own words for the outcome, e.g. "launch video for our new AI agent" or "show our 10k users". Ranks the films by fit.
job––The shelf: launch, feature (one feature or update), explain (what the product does), brand (story, manifesto, mood), ai (AI or agent product), proof (a number, testimonials), app (mobile app), shop (…
max_seconds––Only films this long or shorter, e.g. 15 for a short feed post.
narrated––true = only films with a voice-over part; false = only music-and-motion films.
pageinteger–Page number, from 1. Each page is page_size films; next_page in the answer says what to call next.
page_sizeinteger–Films per page, 1 to 25.
search––Find films by word across ids, names and descriptions, e.g. "phone", "chat", "mascot", "halftone". Every word must match.

Structured output declared, but exposes no named fields.

No examples provided.

list_media ~37

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

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

list_people ~37

The people library: team faces Siren can put in stills (name, role, team, status cropping or ready, round crop URL).

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

list_platinum_films ~166

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 complimentary plan sees it but gets 402 platinum_needs_paid_plan. voice MM = motion and music only (no voice-over question, no narration); MVM = motion, voice and music. Then describe_film for the body, same as any film.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

list_posts ~70

Every post Siren sent or queued: platform, status, live URL, time, and counts by status (posted, queued, failed).

NameTypeReqDescription
limitinteger–How many posts, 1 to 200. Newest first.
offsetinteger–Skip this many, to page back.

Structured output declared, but exposes no named fields.

No examples provided.

list_product_screens ~57

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.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

list_runs ~85

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

NameTypeReqDescription
limitinteger–How many runs to return, 1 to 50. Newest first.
offsetinteger–Skip this many runs, to page back through every video and image the workspace has made.

Structured output declared, but exposes no named fields.

No examples provided.

list_styles ~350

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 brief (asset_type card). The whole library as one file: https://api.mysiren.ai/api/v1/styles.md (also .txt/.json).

NameTypeReqDescription
allboolean–true = every style that passes the filters on one page. Prefer section + page, or the styles.md file.
aspect––Only styles that paint on this shape: square-ig, vertical-ig-feed, story-reel, wide-desktop.
goal––The human's own words for the still, e.g. "a hot take about launches" or "our pricing is simple". Ranks the styles by fit.
pageinteger–Page number, from 1. next_page in the answer says what to call next.
page_sizeinteger–Styles per page, 1 to 25.
search––Find styles by word in their id or when-to-pick line, e.g. "comic", "receipt", "billboard".
section––The shelf: social-ad (feed ads), poster, launch, brand, og (link previews), youtube (thumbnails), app-store, event, wallpaper, arts-creative. Omit to rank the whole library.

Structured output declared, but exposes no named fields.

No examples provided.

mascot_step ~155

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.

NameTypeReqDescription
actionstringyeskeep = build the pose sheet from this hero; retry = paint the hero again; pose = add one more pose to a built mascot.
labelstring–For pose: the pose in a few words, e.g. waving, holding a phone.
notestring–For retry: what to change this time.
promptstring–For pose: extra detail for the pose.
with_modelboolean–For pose: also make a 3D model of it (20 credits instead of 10).

Structured output declared, but exposes no named fields.

No examples provided.

post_run ~191

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 firing inline: poll get_run after that and read `posts[].url` for the live permalink and the caption that went out.

NameTypeReqDescription
caption––Optional caption for this publish; goes out verbatim. Omit and Siren writes it.
platformstring–Connected channel to post to: x, instagram, tiktok, linkedin, or youtube.
run_idstringyesThe run id returned by create_campaign, render_asset, or list_runs.

Structured output declared, but exposes no named fields.

No examples provided.

render_asset ~482

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 has concrete seed JSON. Returns run ids, `estimated_seconds` and `poll_after_seconds`; wait that long, then get_run. THE DIRECTOR: every film body is edited against Brand DNA before it renders. It keeps the film and your brand-specific lines, rewrites empty, generic or reference-body copy, and never touches media. `director` in the response says what changed. `direction` is a free line ("dark, club energy, fast") that steers words, pace and music. A film that cannot use what you sent returns 422 film_does_not_fit with a `fix` and `films_that_fit`. ANY BRAND: put brand_override={"name": "Acme", "site": "acme.com", "logo_url": "https://acme.com/logo.png", "primary": "#FF4400", "accent": "#111111"} on an item to render it for a brand that is not this workspace's own. With a name it is a clean slate: none of this workspace's logo, mascot, font, handle, screenshots or stills are used. Media slots take only URLs you uploaded with upload_media.

NameTypeReqDescription
itemsarrayyesPre-formed SirenSeed film bodies to render (films only; images go through create_campaign). Each item: {output_type, channel, seed_body, archetype?, family?, surface?, caption?, voice_id?, music?, di…
name––Human-readable name for the asset or run.

Structured output declared, but exposes no named fields.

No examples provided.

schedule_post ~220

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.

NameTypeReqDescription
captions––Optional caption override per platform, e.g. {"x": "...", "linkedin": "..."}.
platforms––Where to post: any of x, instagram, tiktok, linkedin, youtube, or ["everything"] for every connected channel.
run_idstringyesThe run id returned by create_campaign, render_asset, or list_runs.
scheduled_atstringyesISO-8601 time to post, e.g. 2026-09-12T09:00:00. Interpreted in the given timezone.
timezonestring–IANA timezone name for scheduled_at, e.g. Africa/Lagos or America/New_York.

Structured output declared, but exposes no named fields.

No examples provided.

studio_automate ~121

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.

NameTypeReqDescription
caption––Default caption for auto-posted cards.
delivery––Optional delivery: {social_account_ids?, telegram?, discord?}.
namestringyesName for this automation profile.
output_typesarrayyesStudio types this profile may render.

Structured output declared, but exposes no named fields.

No examples provided.

studio_card ~196

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.

NameTypeReqDescription
accent––Hex accent, e.g. #5B82FF.
aspect––Canvas aspect, e.g. square-ig or wide-twitter.
bodyobjectyesCard fields for that type (amount, productName, …).
caption––Caption when posting.
output_typestringyesOne of the 33 Studio types from studio_templates, e.g. sale-notification.
platformstring–Connected channel if post is true: x, instagram, tiktok, linkedin, or youtube.
postboolean–If true, post the finished card to a connected account. Confirm with the user first.
theme––dark or light. Omit to use the workspace default.

Structured output declared, but exposes no named fields.

No examples provided.

studio_edit ~176

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.

NameTypeReqDescription
attachments––Optional files to use: URLs from upload_media (a screenshot to show, a logo to put in, a reference). Up to 6.
textstringyesThe change, in plain words: "shorter hook", "show the timer first", "use our orange", "make it vertical". May be empty when attachments say it all.
thread_idstringyesThe thread id from studio_start or studio_threads.

Structured output declared, but exposes no named fields.

No examples provided.

studio_export ~85

Render a Studio video to a file. Spends credits like any video (25; a platinum film 50) and returns the run id: poll get_run until it is terminal, then show the human the file or post it with post_run.

NameTypeReqDescription
thread_idstringyesThe thread id.
version––Version to render. Omit for the current one.

Structured output declared, but exposes no named fields.

No examples provided.

studio_get ~45

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

NameTypeReqDescription
thread_idstringyesThe thread id.

Structured output declared, but exposes no named fields.

No examples provided.

studio_schedule ~101

Render a Studio card then queue a ScheduledPost at scheduled_at.

NameTypeReqDescription
bodyobjectyesCard fields for that type.
caption––Caption for the scheduled post.
output_typestringyesStudio type to render.
platforms––x, instagram, tiktok, linkedin, youtube, or everything.
scheduled_atstringyesISO-8601 time to post.
timezonestring–IANA timezone for scheduled_at.

Structured output declared, but exposes no named fields.

No examples provided.

studio_start ~212

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.

NameTypeReqDescription
attachments––Optional files Siren reads and uses: URLs from upload_media (app screenshots, a logo, a reference picture, a short screen recording). Up to 6.
promptstringyesWhat to make, in plain words: "an App Store preview for our timer app, calm, show the station picker first". An App Store link works too.
surface––Optional shape: story-reel (9:16), square-ig, wide-desktop (16:9).
template––Optional film id to start from (list_films names them). Omit and the director picks.

Structured output declared, but exposes no named fields.

No examples provided.

studio_templates ~38

List Siren Studio's 33 React data-card types with family, description, and body schema. Use this before studio_card so the body matches.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

studio_threads ~35

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

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

update_brand_dna ~130

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.

NameTypeReqDescription
fieldsobjectyesBrand DNA keys to change, e.g. {"tagline": "...", "offer": {"one_liner": "..."}}. Nested bags merge.

Structured output declared, but exposes no named fields.

No examples provided.

update_product_screen ~199

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

NameTypeReqDescription
description––What the picture shows and what it is for, in your words. When set, Siren files the asset without reading it.
device––Device the screenshot was taken on: phone, tablet, desktop, or none.
kind––Free-text kind: product photo, dashboard screenshot, packaging, logo, team photo.
name––Human-readable name for the asset or run.
screen_idstringyesId of the brand asset from list_product_screens.
screen_type––Screen role: feature, hero, onboarding, settings, or marketing.
theme––UI theme in the screenshot: light, dark, or unknown.
use_when––When Siren should reach for this asset, e.g. "any post about the analytics page".

Structured output declared, but exposes no named fields.

No examples provided.

upload_brand_video ~218

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.

NameTypeReqDescription
base64––The clip bytes as base64, if you have no URL.
description––What the clip shows, in your words. When set, Siren files it without reading it.
namestring–Human-readable name, e.g. "checkout demo".
tags––Short lowercase search words.
url––Public https URL of the clip (MP4, MOV or WebM, up to 200 MB and 5 minutes).
use_when––When a film should play it, e.g. "any film about checkout".

Structured output declared, but exposes no named fields.

No examples provided.

upload_logo ~86

Set the workspace logo in Brand DNA. Every render uses it.

NameTypeReqDescription
image_base64––The logo bytes as base64, if you have no URL.
image_url––Public https URL of the logo (PNG, JPG or WebP).
variantstring–light = the mark used on light backgrounds (the usual one); dark = the one for dark backgrounds.

Structured output declared, but exposes no named fields.

No examples provided.

upload_media ~181

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).

NameTypeReqDescription
base64––The media bytes as base64, if you have no URL. Pass this or url.
kindstring–auto (default), image, or video. Detected from the bytes when auto.
namestring–Human-readable name for the file.
url––Public https URL of the photo or video to store. Pass this or base64.

Structured output declared, but exposes no named fields.

No examples provided.

upload_product_screen ~410

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, tags itself. scan_status goes scanning → ready in about 8 seconds; poll list_product_screens. kind is free text ("product photo", "dashboard screenshot", "packaging"), there is no fixed list. A brief that names an asset ("advertise the pink handbag") pulls that file into the still. screen_type / device / theme only matter for device-framed screenshot masters.

NameTypeReqDescription
description––What the picture shows and what it is for, in your words. When set, Siren files the asset without reading it.
devicestring–Device the screenshot was taken on: phone, tablet, desktop, or none.
image_base64––The image bytes as base64, if you have no URL.
image_url––Public https URL of a PNG, JPG, or WebP to store as a brand asset.
kind––Free-text kind: product photo, dashboard screenshot, packaging, logo, team photo.
namestring–Human-readable name for the asset or run.
screen_typestring–Screen role: feature, hero, onboarding, settings, or marketing.
tags––Short lowercase tags for search, e.g. ["dashboard", "dark-mode"].
themestring–UI theme in the screenshot: light, dark, or unknown.
use_when––When Siren should reach for this asset, e.g. "any post about the analytics page".

Structured output declared, but exposes no named fields.

No examples provided.

Install

How do I install the Siren MCP server?

Siren is a hosted endpoint at https://mcp.mysiren.ai/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · mcp.mysiren.ai

# add to Claude Code
claude mcp add --transport http ai-mysiren-siren 'https://mcp.mysiren.ai/mcp'
Common questions

What is the Siren MCP server?

Siren is an MCP server listed in the public MCP registry as ai.mysiren/siren. Deterministic visual marketing engine. Your agent plans, renders, and posts on-brand campaigns. This page covers its hosted endpoint (https://mcp.mysiren.ai/mcp).

Is the Siren MCP server safe to use?

Siren scores 91 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the Siren MCP server expose?

Siren exposes 44 tools: get_account, list_runs, get_run, create_campaign, list_films, and 39 more. Their descriptions and schemas cost roughly 7,435 tokens of context every time the server is loaded.

Does the Siren MCP server require authentication?

Yes. Siren asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

Is the Siren MCP server still maintained?

Siren is still listed as active in the MCP registry. We last reached this channel on 16 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.