Publish on Substack

Draft and publish a Substack post or note from your topic or finished copy.

RUNS INYour signed-in browser

SETUP8 details to add

WHAT YOU GET03 PARTS

01Post or note copy
02Readable formatting
03Published Substack link

SET UP YOUR RUN

Add the details. Check the result. Run it.

No code needed.

Tell rtrvr what to use

Required details are marked. The example text shows the expected format.

Your Substack URLRequired

Content type

Title (for posts)

Required for posts, ignored for Notes

Content (optional)

Leave it blank for rtrvr to draft from the topic.

Topic (if auto-generating)

Subtitle (optional)

Audience

Publish immediately

Choose where it runs

Cloud uses a fresh managed browser. The extension uses the sites you are already signed into.

Your browser is required. This template needs a site where you are signed in.

Choose a browser

Pick a browser where the rtrvr extension is online.

Get the extension

Finish setup in your browser

Install the extension
Sign in to rtrvr
Come back and choose the browser

ONE MORE STEP

Add the required details to continue.

WHAT HAPPENS NEXT

From setup to finished result.

01
rtrvr opens the right sites. It uses Cloud or the signed-in browser you chose.
02
The browser does the job. You can follow the run and step in if a site asks for help.
03
You get the result. The output above is the shape to expect.

ADVANCEDRequest JSONOptional

Exact request sent to the run panel.

REQUEST.JSON

{
  "source": "retrieve",
  "template": {
    "id": "substack_post_creator",
    "slug": "substack-post-creator",
    "name": "Substack Post & Note Creator",
    "categoryId": "SOCIAL_CREATE"
  },
  "inputs": {
    "substackUrl": "",
    "contentType": "note",
    "title": "",
    "postContent": "",
    "topic": "",
    "subtitle": "",
    "audience": "everyone",
    "autoPost": true
  },
  "agentHint": "You are creating content on Substack. Adapt to the actual UI you encounter.\n\n**TASK CONFIGURATION:**\n- Substack URL: \n- Content Type: note\n- Title: \n- Subtitle: \n- Post Content: \n- Topic: \n- Audience: everyone\n- Auto-post: true\n\n---\n\n## STEP 1: NAVIGATE TO SUBSTACK\n\n1. Go to \n2. Wait for page to load\n3. If not logged in, STOP and report authentication required\n\n---\n\n## STEP 2: PREPARE CONTENT\n\n### IF user provided postContent:\nUse this content:\n```\n\n```\n\n### IF postContent is empty - GENERATE:\n\n**For Note (note === \"note\"):**\n- Conversational, thought-provoking\n- 100-500 words ideal\n- Max 2500 characters\n- Discussion starter\n\n**For Post (note === \"post\"):**\n- Good Title, SubTitle\n- Well-structured with headers\n- Valuable to subscribers\n- Use topic: \"\"\n- Professional newsletter tone\n\n---\n\n## STEP 3: CREATE CONTENT\n\n### FOR NOTE:\n1. Navigate to Notes section\n2. Find compose area\n3. Enter content\n4. {autoPost ? \"Post\" : \"Leave for review\"}\n\n### FOR POST:\n1. Find \"New post\" or similar\n2. Must Enter title: \"\"\n3. Enter subtitle if provided: \"\"\n4. Must Enter body content with formatting\n5. Set audience to: everyone\n6. {autoPost ? \"Publish\" : \"Save as Draft\"}\n\n---\n\n## STEP 4: REPORT RESULTS\n\n```json\n{\n  \"success\": true|false,\n  \"contentType\": \"note\",\n  \"title\": \"\",\n  \"content\": \"\",\n  \"contentSource\": \"provided|generated\",\n  \"characterCount\": <number>,\n  \"audience\": \"everyone\",\n  \"status\": \"published|draft|ready_for_review|failed\",\n  \"url\": \"\",\n  \"errorMessage\": \"\"\n}\n```",
  "userInput": "You are creating content on Substack. Adapt to the actual UI you encounter.\n\n**TASK CONFIGURATION:**\n- Substack URL: \n- Content Type: note\n- Title: \n- Subtitle: \n- Post Content: \n- Topic: \n- Audience: everyone\n- Auto-post: true\n\n---\n\n## STEP 1: NAVIGATE TO SUBSTACK\n\n1. Go to \n2. Wait for page to load\n3. If not logged in, STOP and report authentication required\n\n---\n\n## STEP 2: PREPARE CONTENT\n\n### IF user provided postContent:\nUse this content:\n```\n\n```\n\n### IF postContent is empty - GENERATE:\n\n**For Note (note === \"note\"):**\n- Conversational, thought-provoking\n- 100-500 words ideal\n- Max 2500 characters\n- Discussion starter\n\n**For Post (note === \"post\"):**\n- Good Title, SubTitle\n- Well-structured with headers\n- Valuable to subscribers\n- Use topic: \"\"\n- Professional newsletter tone\n\n---\n\n## STEP 3: CREATE CONTENT\n\n### FOR NOTE:\n1. Navigate to Notes section\n2. Find compose area\n3. Enter content\n4. {autoPost ? \"Post\" : \"Leave for review\"}\n\n### FOR POST:\n1. Find \"New post\" or similar\n2. Must Enter title: \"\"\n3. Enter subtitle if provided: \"\"\n4. Must Enter body content with formatting\n5. Set audience to: everyone\n6. {autoPost ? \"Publish\" : \"Save as Draft\"}\n\n---\n\n## STEP 4: REPORT RESULTS\n\n```json\n{\n  \"success\": true|false,\n  \"contentType\": \"note\",\n  \"title\": \"\",\n  \"content\": \"\",\n  \"contentSource\": \"provided|generated\",\n  \"characterCount\": <number>,\n  \"audience\": \"everyone\",\n  \"status\": \"published|draft|ready_for_review|failed\",\n  \"url\": \"\",\n  \"errorMessage\": \"\"\n}\n```",
  "urls": [],
  "meta": {
    "createdAt": "",
    "userAgent": ""
  },
  "execution": {
    "mode": "device",
    "deviceIds": []
  }
}

MORE STARTING POINTS

Other templates for create posts.

See all templates

CREATE POSTSCreate a LinkedIn post

Draft and publish a LinkedIn post from your topic or finished copy.

CREATE POSTSCreate an X post

Draft and publish one X post or a thread from your topic or finished copy.

CREATE POSTSCreate a Threads post

Draft and publish a Threads post from your topic or finished copy.

{ "source": "retrieve", "template": { "id": "substack_post_creator", "slug": "substack-post-creator", "name": "Substack Post & Note Creator", "categoryId": "SOCIAL_CREATE" }, "inputs": { "substackUrl": "", "contentType": "note", "title": "", "postContent": "", "topic": "", "subtitle": "", "audience": "everyone", "autoPost": true }, "agentHint": "You are creating content on Substack. Adapt to the actual UI you encounter.\n\n**TASK CONFIGURATION:**\n- Substack URL: \n- Content Type: note\n- Title: \n- Subtitle: \n- Post Content: \n- Topic: \n- Audience: everyone\n- Auto-post: true\n\n---\n\n## STEP 1: NAVIGATE TO SUBSTACK\n\n1. Go to \n2. Wait for page to load\n3. If not logged in, STOP and report authentication required\n\n---\n\n## STEP 2: PREPARE CONTENT\n\n### IF user provided postContent:\nUse this content:\n```\n\n```\n\n### IF postContent is empty - GENERATE:\n\n**For Note (note === \"note\"):**\n- Conversational, thought-provoking\n- 100-500 words ideal\n- Max 2500 characters\n- Discussion starter\n\n**For Post (note === \"post\"):**\n- Good Title, SubTitle\n- Well-structured with headers\n- Valuable to subscribers\n- Use topic: \"\"\n- Professional newsletter tone\n\n---\n\n## STEP 3: CREATE CONTENT\n\n### FOR NOTE:\n1. Navigate to Notes section\n2. Find compose area\n3. Enter content\n4. {autoPost ? \"Post\" : \"Leave for review\"}\n\n### FOR POST:\n1. Find \"New post\" or similar\n2. Must Enter title: \"\"\n3. Enter subtitle if provided: \"\"\n4. Must Enter body content with formatting\n5. Set audience to: everyone\n6. {autoPost ? \"Publish\" : \"Save as Draft\"}\n\n---\n\n## STEP 4: REPORT RESULTS\n\n```json\n{\n \"success\": true|false,\n \"contentType\": \"note\",\n \"title\": \"\",\n \"content\": \"\",\n \"contentSource\": \"provided|generated\",\n \"characterCount\": <number>,\n \"audience\": \"everyone\",\n \"status\": \"published|draft|ready_for_review|failed\",\n \"url\": \"\",\n \"errorMessage\": \"\"\n}\n```", "userInput": "You are creating content on Substack. Adapt to the actual UI you encounter.\n\n**TASK CONFIGURATION:**\n- Substack URL: \n- Content Type: note\n- Title: \n- Subtitle: \n- Post Content: \n- Topic: \n- Audience: everyone\n- Auto-post: true\n\n---\n\n## STEP 1: NAVIGATE TO SUBSTACK\n\n1. Go to \n2. Wait for page to load\n3. If not logged in, STOP and report authentication required\n\n---\n\n## STEP 2: PREPARE CONTENT\n\n### IF user provided postContent:\nUse this content:\n```\n\n```\n\n### IF postContent is empty - GENERATE:\n\n**For Note (note === \"note\"):**\n- Conversational, thought-provoking\n- 100-500 words ideal\n- Max 2500 characters\n- Discussion starter\n\n**For Post (note === \"post\"):**\n- Good Title, SubTitle\n- Well-structured with headers\n- Valuable to subscribers\n- Use topic: \"\"\n- Professional newsletter tone\n\n---\n\n## STEP 3: CREATE CONTENT\n\n### FOR NOTE:\n1. Navigate to Notes section\n2. Find compose area\n3. Enter content\n4. {autoPost ? \"Post\" : \"Leave for review\"}\n\n### FOR POST:\n1. Find \"New post\" or similar\n2. Must Enter title: \"\"\n3. Enter subtitle if provided: \"\"\n4. Must Enter body content with formatting\n5. Set audience to: everyone\n6. {autoPost ? \"Publish\" : \"Save as Draft\"}\n\n---\n\n## STEP 4: REPORT RESULTS\n\n```json\n{\n \"success\": true|false,\n \"contentType\": \"note\",\n \"title\": \"\",\n \"content\": \"\",\n \"contentSource\": \"provided|generated\",\n \"characterCount\": <number>,\n \"audience\": \"everyone\",\n \"status\": \"published|draft|ready_for_review|failed\",\n \"url\": \"\",\n \"errorMessage\": \"\"\n}\n```", "urls": [], "meta": { "createdAt": "", "userAgent": "" }, "execution": { "mode": "device", "deviceIds": [] } }