Post to Instagram from Cline

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. Cline reaches all of it through one connection. This page covers one slice of that: what Cline can actually do on Instagram, and what Instagram will not let it do.

Connect Hermoso to Cline

1. Create an API key. In Hermoso, open the MCP & CLI tab and, under Terminal & API keys, press ＋ Create API key. It looks like hmk_… and carries real spend authority, so treat it like a password.
2. Add an MCP server in Cline’s MCP settings, pointing at the hosted endpoint with your key:

   { "url": "https://app.hermoso.ai/mcp",
     "headers": { "Authorization": "Bearer <your key>" } }

3. Ask Cline 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.

This is Hermoso’s generic HTTP MCP block rather than a bespoke Cline integration, and it is worth saying so plainly. What is Cline-specific on our side is the authorization server: it accepts loopback (http://127.0.0.1:PORT/…) redirect URIs precisely so locally installed agents like Cline can complete a registration handshake at all.

Then connect Instagram 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 Instagram tools Cline gets

• post_to_meta: publishes to Instagram with target: "instagram". Instagram is a visual channel and the API agrees: a post needs an image or a video.
• schedule_post: queues it on the shared calendar, with a per-channel caption if the copy should differ from your Facebook or LinkedIn version.
• list_meta_comments / reply_to_meta_comment / moderate_meta_comment: read, reply and moderate under a post.
• meta_page_insights / meta_post_insights: reach, impressions, saves and engagement, per account and per post.
• search_instagram: keyword search across public Instagram Reels, for research rather than publishing.

Two Instagram facts worth knowing before you automate anything. There is no native Instagram scheduling in Meta’s API, so a schedule is Hermoso’s queue rather than Instagram’s, and passing Facebook’s scheduleAt for Instagram is refused rather than silently posted now. And an Instagram caption cannot be edited once the post is live: the only thing Meta lets you change on a published post is whether comments are enabled. Deleting one is supported: manage_meta_post removes ordinary posts, Stories, Reels and entire carousel albums, though never a single card out of an album.

Instagram limits worth knowing before you automate anything

Try it in Cline

Ask for it in ordinary language. These are plain sentences, not a DSL:

“Build a 5-slide Instagram carousel from the assets in this project and publish it with a caption under 2,200 characters.”

That walks search_instagram → plan_ad → render_ad → post_to_meta (target: "instagram"). Cline asks before each tool call by default, which is the behaviour you want on anything that publishes.

Cline on Instagram: the part that bites

Instagram is the channel where the words are final: a published caption cannot be edited, only its comments toggled. The post can still be deleted with manage_meta_post, so the thing to review before the call is the copy. Cline asking before each tool call is the default for good reason here.

If you run Cline in auto-approve, exclude the publishing and campaign tools, since those are the ones with a public or a financial consequence.

Research Instagram before you post

search_meta_ads covers Instagram placements as well as Facebook, since it is one library. For organic, search_instagram searches public Reels by keyword, which is the surface where the format actually moves; profile and hashtag pulls go through fetch_social_data and search_instagram_hashtag.

The paid half

Instagram placements are bought through the same Meta campaign tree as Facebook: create_meta_campaign → create_meta_adset → create_meta_ad, with placements selectable per platform and position. preview_meta_ad shows the real rendered ad per placement before you spend, and meta_insights breaks results down by age, gender, placement and country. That breakdown is what shapes the next creative.

What Cline 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 Cline, post to: Facebook · Threads · TikTok · YouTube · X · LinkedIn · Pinterest · Bluesky · Telegram. Or see everything Cline can publish to.

Post to Instagram from: Claude · ChatGPT · Claude Code · Cursor · Codex · OpenClaw · Grok Bot · Hermes · Gemini CLI · Perplexity · Le Chat · Claude Cowork · Perplexity Computer · Paperclip

Frequently asked questions

Can Cline post to Instagram?

Yes, through Hermoso's MCP server. Create an API key in Hermoso on the MCP & CLI tab, under Terminal & API keys, then add https://app.hermoso.ai/mcp to Cline with an Authorization: Bearer header. Cline then has 922+ tools, including the ones that publish to Instagram, plus the ones that research the ads already running in your market and render the creative in the first place.

How do I connect Instagram to Cline?

Two steps, once each. Create an API key in Hermoso on the MCP & CLI tab, under Terminal & API keys, then add https://app.hermoso.ai/mcp to Cline with an Authorization: Bearer header. Then connect Instagram inside Hermoso under Settings → Connectors, which is an OAuth consent screen in a browser. After that Cline publishes to Instagram as an ordinary tool call.

Can Cline post privately or as a draft to Instagram?

No. Instagram’s Content Publishing API publishes or does nothing. There is no unlisted, private or draft post. A published caption also cannot be edited; the only field Meta lets you change on a live post is whether comments are enabled. Deleting a post is supported, and covers ordinary posts, Stories, Reels and entire carousel albums. Hermoso refuses a visibility Instagram cannot honour at the moment you ask for it, rather than quietly publishing something weaker.

Can Cline research Instagram before it posts?

Yes. search_meta_ads covers Instagram placements in the Meta Ad Library, and search_instagram searches public Reels by keyword.

What is the Instagram caption limit when posting from Cline?

An Instagram caption is capped at 2,200 characters, and the limit is enforced when the post is queued rather than when it fires. Hermoso enforces it when the post is created or queued, so Cline is told immediately rather than failing later when nobody is watching.

Can Cline run Instagram ads as well as posting?

Yes, through the Meta campaign tree. Instagram placements are selected inside a Meta ad set. preview_meta_ad renders the real ad per placement before you spend.