API reference

beta

Push links from scripts, bots, and automations. Pull your reading list into any tool.

Use cases

Slack automation

Script that watches a Slack channel and archives every link your team drops - automatically saved to your dashboard.

GitHub repo archiving

Pipe starred repos or trending repositories straight into send/links so you never lose an interesting project.

RSS & newsletters

Connect an RSS feed or email digest and push articles you want to read later without opening the browser.

Zapier / Make

Trigger a save from any app in your stack - new Notion page, Airtable row, or calendar event with a link.

Authentication

All requests require an Authorization header with your API key.

Authorization: Bearer sml_your_key_here

API keys start with sml_. Generate yours in Settings - Developer.

Base URL

https://sendlinks.app/api/v1

Rate limits

No rate limits are enforced during the beta.

Limits will be introduced before general availability. Be a good citizen - avoid hammering the API in tight loops.

Errors

All error responses follow the same shape. Check ok first, then read error for a human-readable message and code for programmatic handling.

{
  "ok": false,
  "error": "Link already saved",
  "code": "DUPLICATE"
}

401	Unauthorized	Missing or invalid API key.
400	INVALID_URL	The URL is malformed or could not be fetched.
400	—	Missing required field, e.g. "url" is required.
409	DUPLICATE	Link is already saved in your account.
500	—	Server error - safe to retry with backoff.

Endpoints

POST/api/v1/push

Save a link to your dashboard.

Body parameters

urlrequired	string	The URL to save.
note	string	Optional note to attach to the link.
folderId	string	Save into a specific folder by its ID. Folder IDs are not yet exposed via API - coming soon.

Example request

curl -X POST https://sendlinks.app/api/v1/push -H "Authorization: Bearer sml_your_key" -H "Content-Type: application/json" -d '{"url":"https://medium.com/p/cool-article-example","note":"read this weekend"}'

Response 201 Created

{
  "ok": true,
  "link": {
    "id": "64f1a2b3c4d5e6f7a8b9c0d1",
    "url": "https://medium.com/p/cool-article-example",
    "title": "Cool Article Example",
    "category": "Tech",
    "createdAt": "2026-04-16T10:00:00.000Z"
  }
}

Error example 400 bad URL

{
  "ok": false,
  "error": "Invalid or unreachable URL",
  "code": "INVALID_URL"
}

GET/api/v1/links

Fetch your saved links with optional filters and pagination.

Query parameters

limit	number	Results per page. Default 20, max 100.
page	number	Page number. Default 1.
category	string	Filter by category e.g. Tech, Entertainment, Science.
unread	boolean	Pass true to return only unread links.

Example request

curl "https://sendlinks.app/api/v1/links?limit=5&unread=true" -H "Authorization: Bearer sml_your_key"

Response

{
  "ok": true,
  "links": [
    {
      "id": "64f1a2b3c4d5e6f7a8b9c0d1",
      "url": "https://medium.com/p/cool-article-example",
      "title": "Cool Article Example",
      "description": "A short description...",
      "image": "https://cdn.example.com/og.png",
      "category": "Tech",
      "domain": "medium.com",
      "note": "read this weekend",
      "isPinned": false,
      "isFavourite": false,
      "isRead": false,
      "createdAt": "2026-04-16T10:00:00.000Z"
    }
  ],
  "pagination": {
    "page": 1,
    "limit": 5,
    "total": 42,
    "totalPages": 9
  }
}

Playground

Get your API key in Settings

API key

url required

note optional

Quick start

Node.js

Save a link with the native fetch API - no dependencies needed.

const API_KEY = process.env.SENDLINKS_API_KEY

async function saveLink(url, note) {
  const res = await fetch("https://sendlinks.app/api/v1/push", {
    method: "POST",
    headers: {
      Authorization: `Bearer ${API_KEY}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({ url, note }),
  })

  const data = await res.json()
  if (!data.ok) throw new Error(data.error)
  return data.link
}

// usage
saveLink("https://medium.com/p/cool-article-example", "read later")
  .then(link => console.log("Saved:", link.id))
  .catch(err => console.error(err.message))

Python - Slack bot

Save every link your team posts in a Slack channel.

import os, re, requests
from slack_bolt import App

API_KEY = os.environ["SENDLINKS_API_KEY"]
app = App(token=os.environ["SLACK_BOT_TOKEN"])

URL_RE = re.compile(r"https?://[^\s>]+")

@app.event("message")
def on_message(event, say):
    for url in URL_RE.findall(event.get("text", "")):
        requests.post(
            "https://sendlinks.app/api/v1/push",
            headers={"Authorization": f"Bearer {API_KEY}"},
            json={"url": url, "note": f"from #{event['channel']}"},
        )

if __name__ == "__main__":
    app.start(3000)

Ready to build?

Generate your API key in settings.

Go to Settings

Report a bug