Pinterest API Create and schedule Pins

Create image and video Pins on any of your boards, with a destination link, on a schedule from your code or your AI agent.

Base URL https://api.so-me.studio/v1 · Auth X-API-Key · socialMedia: PINTEREST

What you can publish to Pinterest

Send one of these values as postType. Every post needs text, and photos or videos are attached by fileId from your media library.

IMAGE

One image Pin.

VIDEO

One video Pin, up to 5 minutes.

Schedule a Pinterest post

Upload the media, then create the post. Leave out scheduledAt to publish right away.

  1. Reserve an upload URL

    POST /v1/media/presign-upload adds the file to your media library and returns a fileId and a presigned uploadUrl.

    Reserve an upload URL
    curl -X POST https://api.so-me.studio/v1/media/presign-upload \
      -H "X-API-Key: $SOME_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{"files":[{"filename":"balcony-garden.jpg","mimetype":"image/jpeg","size":2097152}]}'
    
    # → [{ "fileId": "…", "uploadUrl": "https://…", "fileSrc": "…", "s3Key": "…" }]
  2. Upload the file

    PUT the bytes to uploadUrl with exactly the Content-Type you declared. The URL is valid for one hour.

    Upload the file
    curl -X PUT "$UPLOAD_URL" \
      -H "Content-Type: image/jpeg" \
      --upload-file ./balcony-garden.jpg
  3. Create the post

    POST /v1/posts with the fileId. The response is the post with status SCHEDULED, and it publishes at scheduledAt through a queue that retries on failure.

    Create the post
    curl -X POST https://api.so-me.studio/v1/posts \
      -H "X-API-Key: $SOME_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{
        "socialMedia": "PINTEREST",
        "postType": "IMAGE",
        "text": "Small-space balcony garden: 12 plants that thrive in pots",
        "fileIds": ["<fileId>"],
        "scheduledAt": "2026-11-10T19:00:00Z",
        "metaData": {
          "boardId": "<board id>",
          "link": "https://example.com/balcony-garden"
        }
      }'

accountId is optional when the workspace has one Pinterest account. Otherwise pass an id from GET /v1/accounts.

Files attached with fileIds are checked against the Pinterest limits below before anything is queued. A file that breaks a rule returns 400 with a report per file.

Pinterest options

The fields that change how a post is published on Pinterest.

FieldWhat it does
metaData.boardIdRequired: the board the Pin is saved to. Without it the Pin fails at publish time.
metaData.linkThe destination URL people open from the Pin.
textThe Pin title is the first 100 characters of text, and the full text becomes the Pin description.

Pinterest media limits

Social media studio checks each file against these limits before it publishes. They are our configured limits, not a promise from Pinterest: GET /v1/media/rules returns the live table, and POST /v1/media/validate checks a file without posting it.

Post type IMAGE

Formats
JPEG, PNG, WebP
Max file size
20 MB
Files per post
1
Dimensions
≥ 200 × 200 px
Aspect ratio
1:2 to 1.91:1

Post type VIDEO

Formats
MP4, MOV
Max file size
2 GB
Files per post
1
Max duration
5 min
Dimensions
≥ 540 × 540 px
Aspect ratio
1:2 to 1.91:1
Video codecs
H.264, H.265
Frame rate
≤ 60 fps

Know when it is live

Publishing is asynchronous. Subscribe to post.published and post.failed, or poll GET /v1/posts/:id until postStatus is POSTED or FAILED.

Subscribe once
curl -X POST https://api.so-me.studio/v1/webhooks/subscriptions \
  -H "X-API-Key: $SOME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://example.com/hooks/social",
    "categories": ["post"],
    "events": ["post.published", "post.failed"]
  }'

# The response includes the secret that signs every delivery.
What each delivery looks like
POST /hooks/social
X-Webhook-Event: post.published
X-Webhook-Signature: <hex HMAC-SHA256 of the raw body>

{
  "event": "post.published",
  "category": "post",
  "timestamp": "2026-11-03T15:00:07.412Z",
  "data": { "postId": "…", "platform": "PINTEREST" }
}

Every delivery is signed with HMAC-SHA256 in X-Webhook-Signature. post.failed fires after the last retry; fix the cause and call POST /v1/posts/:id/retry. A first comment reports on its own with post.first_comment_posted or post.first_comment_failed.

Building an AI agent?

The same API key drives an MCP server with 200+ tools and a CLI, so an agent can post to Pinterest without hand-written HTTP calls.

MCP server

Add the server to Claude, Cursor or any MCP client with your API key. OAuth works too. For Pinterest, the agent calls these tools with the same fields as the REST request:

  • list_pinterest_boards
  • presign_media_upload
  • create_post
mcp.json
{
  "mcpServers": {
    "so-me-studio": {
      "url": "https://api.so-me.studio/mcp",
      "headers": { "X-API-Key": "sk_live_…" }
    }
  }
}

CLI

Install it with npm i -g @social-media-scheduler/cli. It uploads local files for you and prints JSON, so a script or a CI job can schedule a Pinterest post in one command.

so-me
so-me posts:create --platform PINTEREST --post-type IMAGE \
  -m ./balcony-garden.jpg \
  -c "Small-space balcony garden: 12 plants that thrive in pots" \
  -s 2026-11-10T19:00:00Z \
  --metadata '{"boardId":"<board id>","link":"https://example.com/balcony-garden"}'

API, CLI and MCP access is included on every paid plan: Lite, Creator, Standard, Advanced and Lifetime. See plans and limits

Keep reading

Other platform guides

Ask the MCP server: list_pinterest_boards returns the boards of a connected account, and create_pinterest_board makes a new one. The REST API has no boards route yet.

Yes. Put the URL in metaData.link, and the Pin opens it.

No. You connect the Pinterest account once in the Social media studio dashboard through the Pinterest sign-in. Its tokens are stored encrypted and refreshed on our side, and your code only sends your Social media studio API key in the X-API-Key header.

No. It returns as soon as the post is queued. Publishing runs in a worker that retries on failure, so listen for post.published and post.failed, or poll GET /v1/posts/:id.

The REST API, the CLI and the MCP server are included on every paid plan: Lite, Creator, Standard, Advanced and Lifetime. Lite, Creator, Standard and Advanced start with a 7-day trial (card required), and Lifetime is a one-time payment.

Schedule once.
Post everywhere.

Stop juggling tabs, draft, customize, and publish to 20 platforms from a single calendar.

Pinterest API: Create & Schedule Image and Video Pins