Hermoso is a marketing MCP server: 922+ tools over one OAuth’d endpoint that let an agent research the ads already running in a market, generate finished image and video ads, publish them, and build the paid campaigns behind them. ChatGPT reaches all of it through one connection. This page covers one slice of that: what ChatGPT can actually do on Threads, and what Threads will not let it do.
Connect Hermoso to ChatGPT
- Open Hermoso in ChatGPT’s app directory. Hermoso in the ChatGPT app directory, or search for Hermoso under Plugins in the ChatGPT sidebar.
- Add it, connect and approve. Click Add, then sign in with your Hermoso account when the consent page opens. There is no key to paste.
- Ask ChatGPT for something. “Pull my three closest competitors’ longest-running ads and remix the best hook into a 9:16 video,” or “post this render to the channel.” The agent picks the tools; you approve the spend.
Prefer to add it by hand? Developer mode still works: Plugins → Add → Create MCP App, Server URL https://app.hermoso.ai/mcp, Authentication OAuth. It is the same endpoint every other client uses.
Then connect Threads itself, once, under Settings → Connectors in Hermoso. That is an OAuth consent screen, so it is the one step that needs a browser. Everything after it is a tool call.
The Threads tools ChatGPT gets
post_to_meta: publishes text, an image or a video withtarget: "threads", optionally geotagged.schedule_post: queues it alongside every other channel.list_threads_posts / threads_insights: what you have posted, and how each one did.list_threads_replies / reply_to_thread / hide_thread_reply: read the replies, answer as the brand, hide what does not belong.list_threads_mentions: who is talking about you.search_threads_keyword / search_threads_locations: keyword search and the location ids a geotag needs.delete_thread: removes a post.
Threads is the channel where Hermoso goes furthest past publishing. Beyond posting there is a full read-and-respond surface (replies, mentions, keyword search and per-post insights), which makes it usable as a listening channel as well as an outlet. Note that Threads is a separate OAuth grant from Facebook even though it shares the Page.
Threads limits worth knowing before you automate anything
| Text | A Threads post is capped at 500 characters, the tightest here apart from X. It is enforced when the post is created or queued, so an overlong post is refused while you are still there to fix it instead of being silently cut on the way out. |
|---|---|
| Visibility | Public only. “Threads has no unlisted, private or draft post.” A Threads post exists publicly or not at all. |
| Carousel | 2 to 20 slides, images and video mixed. Both bounds are Meta’s own words, quoted in the table that enforces them: “Carousels must have at least 2” items, and “no more than 20 total images, videos, or a mix of the two.” That makes Threads the most generous mixed-media carousel of any channel here. |
| Which account | pageId. The same connected Page identity carries Facebook, Instagram and Threads. |
Try it in ChatGPT
Ask for it in ordinary language. These are plain sentences, not a DSL:
“Draft five Threads posts under 500 characters testing different angles, post the two strongest, then check mentions this afternoon and draft replies.”
That walks get_brand → generate_text → post_to_meta (target: "threads") → list_threads_replies. Tool calls run in the chat and you approve them there, so nothing publishes without you seeing the caption first.
ChatGPT on Threads: the part that bites
The interesting half of Threads here is the reading, not the posting: mentions, replies, keyword search and per-post insights are all tools, so “find what people are saying and draft answers” is a single ask. The 500-character cap is the tightest of any channel except X, so per-channel captions are worth using rather than reusing your Instagram copy.
ChatGPT is the only client that renders Hermoso’s inline widgets; anywhere else the same tools return plain structured results.
Research Threads before you post
search_threads searches public Threads by keyword through the research surface, and search_threads_keyword does the same through your connected Threads account. There is no Threads ad library, because there are no Threads ads to archive.
The paid half
There is no Threads ads product in Hermoso, and it would be wrong to imply one. Threads here is an organic channel: publish, read, reply, measure. The paid tools cover Meta (Facebook and Instagram), Google Ads, Microsoft Advertising, Reddit Ads, LinkedIn, Pinterest, X Ads, TikTok Ads, Snapchat Ads, ChatGPT Ads, Apple Search Ads and AppLovin Ads.
What ChatGPT cannot do on its own
An agent with a budget is only useful if the blast radius is bounded, so the fence is in the server rather than in a prompt. Every ad campaign, ad set, ad group and ad is created paused, and the status switches that arm real money refuse to run without an explicit confirmation flag. Every render is quoted first (hermoso_capabilities publishes each model’s exact credit cost before anything spends). Credits are reserved before the first provider call and settled at the exact cost afterwards, so a failed dispatch refunds rather than leaving you billed for nothing. Deletes are confirm-gated too, and every campaign tree is read back from the ad platform before your agent tells you what it built.
One step is deliberately not headless: linking an account is an OAuth consent screen, so you connect the channel once in a browser. Everything after that is a tool call.
The rest of the matrix
From ChatGPT, post to: Facebook · Instagram · TikTok · YouTube · X · LinkedIn · Pinterest · Bluesky · Telegram. Or see everything ChatGPT can publish to.
Post to Threads from: Claude · Claude Code · Cursor · Codex · Cline · OpenClaw · Grok Bot · Hermes · Gemini CLI · Perplexity · Le Chat · Claude Cowork · Perplexity Computer · Paperclip
Frequently asked questions
Can ChatGPT post to Threads?
Yes, through Hermoso's MCP server. In ChatGPT, add https://app.hermoso.ai/mcp as a custom connector and approve it with your Hermoso account. There is no key to paste. ChatGPT then has 922+ tools, including the ones that publish to Threads, plus the ones that research the ads already running in your market and render the creative in the first place.
How do I connect Threads to ChatGPT?
Two steps, once each. In ChatGPT, add https://app.hermoso.ai/mcp as a custom connector and approve it with your Hermoso account. There is no key to paste. Then connect Threads inside Hermoso under Settings → Connectors, which is an OAuth consent screen in a browser. After that ChatGPT publishes to Threads as an ordinary tool call.
Does ChatGPT need my Threads password?
No. You connect Threads to Hermoso once through an OAuth consent screen in a browser, and ChatGPT then reaches it as a tool call. Linking an account is the one step that is not headless; nothing after it needs a password, and no credential is ever handed to the model.
Can ChatGPT run Threads ads as well as posting?
No. There is no Threads ads product in Hermoso. Threads here is organic: publish, read replies and mentions, answer, and measure.
Can ChatGPT post a carousel to Threads?
Yes, 2 to 20 slides, images and video mixed. Both bounds are Meta’s own published numbers for the Threads API. ChatGPT calls the same publish tool either way, and a channel that cannot carry a carousel is refused with the real reason attached.
Can ChatGPT research Threads before it posts?
Yes. search_threads searches public Threads by keyword through the research surface, and search_threads_keyword does the same through your connected account.
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