Post everywhere with one API call

Chirio connects your users' Instagram, Threads, X and LinkedIn accounts with hosted OAuth, then publishes, schedules and measures posts from your code or your AI agent. You pay for posts that go out, not for profiles you connect.

Start free

Read the docs

100 free writes a month. No card needed.

const res = await fetch("https://www.chirio.dev/api/v1/posts", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.CHIRIO_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    content: "We just shipped dark mode 🌙",
    mediaItems: [{ type: "image", url: "https://cdn.acme.dev/dark.png" }],
    platforms: [
      { platform: "instagram", accountId: ig },
      { platform: "threads", accountId: threads },
      { platform: "linkedin", accountId: linkedin,
        firstComment: "Release notes: acme.dev/changelog" },
      { platform: "x", accountId: x, content: "Dark mode is live 🌙" },
    ],
  }),
});

Deliverypost_7f3a · 9 writes

@acme1 write

Published

@acme1 write

Published

Acme Inc.2 writes · with comment

Published

@acmehq5 writes

Published

MetricsGET /posts/post_7f3a/metrics

12.4k

861

47

92

Publishing

Everything between your app and the feed

Each network has its own OAuth, media rules, rate limits and token lifetimes. Chirio handles them, so you write one integration and keep it.

Instagram

Threads

X

Hosted OAuth

Send your user to one link and get an account id back. Chirio runs the platform apps, scopes and redirects, so you never register one per network.

One call, every network

Up to ten targets per post, each with its own caption or media if you want. You get a result per network, so a partial failure never hides behind one status code.

Scheduling built in

Add publishAt and the post goes out at that minute, up to a year ahead. Cancel it any time before it leaves.

First comments and reposts

Keep the link out of the caption with a first comment, and repost your own posts or any post URL when it starts doing well.

Media that fits each network

Images, video, Instagram carousels, reels and stories, and LinkedIn PDF carousels. Chirio checks each network's limits before anything is sent.

Metrics per post

Views, likes, comments, shares and saves for every target, read from the network in one call.

Tokens looked after

Access tokens are encrypted at rest and refreshed before they expire. An account that needs reconnecting says so instead of failing silently.

Safe to retry

Retry a timed-out request with the same idempotency key and you get the original post back instead of a duplicate. Each write is billed once, however often you ask.

Plain REST

JSON in, JSON out, one Bearer key, the same error shape everywhere. No SDK to install, nothing to keep in sync.

For agents

Let your agent do the posting

Chirio ships an MCP server next to the REST API. Point your agent at it and it can see the connected accounts, write the post, schedule it and check how it went.

Connect it in one line

Add Chirio to your client's MCP settings with your API key.

mcp.json

{
  "mcpServers": {
    "chirio": {
      "url": "https://www.chirio.dev/api/mcp",
      "headers": { "Authorization": "Bearer chirio_sk_..." }
    }
  }
}

list_accountsThe accounts your users connected

create_postPublish now or schedule with publishAt

get_postThe outcome on every network

list_postsRecent posts, newest first

Example

“Post the release notes to Threads and LinkedIn tomorrow at 9am, with the changelog link as the first comment.”

Your agent calls list_accounts, then create_post with publishAt.

Same key, same limitsThe MCP server calls the same API your code does. Revoke the key and the agent stops mid-conversation.

Works with any MCP clientClaude, Cursor and anything else that speaks Streamable HTTP. Clients that only take a URL can put the key in the path.

Included on every planReading is free. An agent's post costs the same write as any other.

Why Chirio

Priced on what you publish

Most publishing APIs bill per connected profile or a flat fee with a cap. Chirio bills the thing that actually costs money: the post going out.

Pay per post, not per profile

Studio is $79 a month for 50 accounts and 10,000 writes. Per-profile APIs often charge several hundred dollars for 30 profiles, however little they post.

Only successful writes are billed

A target that fails, or a first comment a network refuses, costs nothing. Retries are billed once.

Never cut off mid-campaign

Paid plans keep publishing past their allowance and bill the extra, priced so that upgrading is always cheaper than overflowing.

X costs, in the open

X charges per post. An X write counts as 5, or 65 with a link, because that is what X charges. You see it before you post, not on the invoice.

Made for agents

The MCP server comes with every plan, on the same key, so your agent and your code share one integration.

Running in production

Aveiro's social dashboard publishes through Chirio as a regular customer. Read the case study

Per-profile APIs

Flat-plan APIs

Chirio

You pay for

Per-profile APIs

Every connected profile

Flat-plan APIs

A fixed fee with an account cap

Chirio

Posts that go out

A brand that posts twice a month

Per-profile APIs

Costs as much as your busiest one

Flat-plan APIs

Takes a slot in your cap

Chirio

Two writes

Posting more

Per-profile APIs

Same price per profile

Flat-plan APIs

Same price until you outgrow the cap

Chirio

Cheaper per write on bigger plans

Pricing models as most social publishing APIs publish them. Check each provider for current prices.

What would you pay?

Brands you post for, and how often. Counted at one write per post, as on Instagram, Threads and LinkedIn.

Connected accounts: 30

Posts per account each month: 12

360 writes a month on Studio

$79

/ month

Compare plans

How it works

Your first post in three requests

01

Create a key

Sign in with your email and create an API key under Settings. It is shown once.

Authorization: Bearer chirio_sk_…

02

Connect accounts

Ask for a connect link and send your user to it. They approve on the network and land back in your app.

POST /api/v1/accounts/connect

03

Publish

Send the post once with every account it should reach. Read the result per network, now or when it is scheduled.

POST /api/v1/posts

One key

More APIs on the same account

Chirio is where Once UI's paid APIs live. One sign-in, one API key and one bill, whichever of them you use.

Live

Social publishing

Publish, schedule, repost and measure on Instagram, Threads, X and LinkedIn.

Hosted OAuth for your users

REST and MCP

Billed per write that succeeds

Coming soon

Styled screenshots

Turn any URL into a styled, share-ready image, rendered in a real browser by the Frametic engine.

One call per screenshot

Billed only when it finishes

Plain or styled output

Live

Agent inbox

Capture a part of your screen, pin notes on it and send it to the agent that works on that project.

Chirio Capture for Windows

Sorted to the right project

Free to use

Pricing

Start free, pay as you post

Every plan includes the REST API, the MCP server, scheduling and metrics. Plans differ in writes included and accounts connected.

Free

$0

per month

Included writes100

Connected accounts3

Extra writesNot available

Publish to XNo

Start free

Indie

$19

per month

Included writes2,000

Connected accounts10

Extra writes$0.020 each

Publish to XYes

Choose Indie

Studio

$79

per month

Included writes10,000

Connected accounts50

Extra writes$0.015 each

Publish to XYes

Choose Studio

Scale

$299

per month

Included writes50,000

Connected accounts250

Extra writes$0.010 each

Publish to XYes

Choose Scale

Need more than 250 accounts or a contract? See Enterprise and how writes are counted

From the blog

Read everything

Case study

Aug 6, 2026

How Aveiro ships social publishing on ChirioAveiro's Social dashboard — agent drafts, human approval, scheduled dispatch to Instagram, Threads and LinkedIn — runs on Chirio as a regular tenant, through one API key and five endpoints.

Read the post

Pricing

Aug 12, 2026

How much does the X (Twitter) API actually cost in 2026?X's pay-per-use pricing explained: $0.015 per post, $0.20 per post with a URL, the media.write scope trap, and how to budget for programmatic posting without surprises.

Read the post

FAQ

Questions developers ask first

What counts as a write?

Do I need my own developer app on each network?

What happens when I reach my allowance?

Can an AI agent post for me?

How are my users' tokens stored?

Can I schedule posts?

Is there a free plan?

Something else? Write to support@dopler.app

Ship social publishing this week

Start on the free plan and move up when your posts do.

Start free

Read the docs