Backlynk
Developer

API Documentation

Automate directory submissions programmatically. API access is available on Pro ($199) and Agency ($399) tiers.

Authentication

All authenticated endpoints require a Bearer token or API key in the request header:

# Using JWT token
Authorization: Bearer <access_token>

# Using API key (all paid plans)
x-api-key: bk_live_xxxxxxxxxxxxx

Access tokens expire after 15 minutes. Use the refresh token endpoint to get a new one.

Rate Limits

API (global): 100 req/min
Login: 5 req/min
Register: 3 req/min
Backlink check: 5 req/min

Per-plan usage limits apply to submission quota, not request rate. See your dashboard for your plan's capacity.

Endpoints

POST/api/v1/auth/login

Authenticate and get JWT access + refresh tokens

All
GET/api/v1/sites

List all your registered sites

AuthAll
POST/api/v1/sites

Register a new site for directory submission

AuthAll
GET/api/v1/directories

Browse available directories (filtered by your tier DR cap)

AuthAll
GET/api/v1/directories/explore

Public directory explorer (limited fields, no auth required)

All
POST/api/v1/jobs

Create a submission job for a site + directory list

AuthAll
GET/api/v1/jobs/:id

Get job status and progress details

AuthAll
GET/api/v1/backlinks

List all discovered backlinks for your sites

AuthGrowth+
POST/api/v1/directories/check-backlinks

Verify known backlink URLs for status, redirects, rel, canonical, robots, and CSV-ready evidence

All
POST/api/v1/api-keys

Create an API key for programmatic access

AuthPro+
GET/api/v1/users/me

Get current user profile and subscription details

AuthAll

Public Backlink Check Response

The public backlink check endpoint accepts one target domain and up to 25 known linking-page URLs. Each result includes page-level evidence that can be exported from the web tool or consumed directly.

{
  "domain": "example.com",
  "checked": 1,
  "summary": {
    "alive": 1,
    "dead": 0,
    "withLink": 1,
    "dofollow": 1,
    "indexable": 1,
    "redirected": 0
  },
  "results": [
    {
      "url": "https://directory.example/listing",
      "finalUrl": "https://directory.example/listing",
      "redirectChain": [],
      "httpStatus": 200,
      "domainFound": true,
      "hasLink": true,
      "linkType": "dofollow",
      "targetUrl": "https://example.com/",
      "anchorText": "Example",
      "relAttributes": [],
      "canonicalUrl": "https://directory.example/listing",
      "robotsDirectives": [],
      "indexable": true
    }
  ]
}

Quick Start

Submit your site to directories in 3 API calls:

# 1. Login
curl -X POST https://backlynk.io/api/v1/auth/login \
  -H "Content-Type: application/json" \
  -d '{"email":"[email protected]","password":"..."}'

# 2. Add your site
curl -X POST https://backlynk.io/api/v1/sites \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://yoursite.com","name":"Your Site","description":"..."}'

# 3. Start submissions
curl -X POST https://backlynk.io/api/v1/jobs \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{"site_id":"<site_id>","directory_ids":[1,2,3,4,5]}'

Full response schemas and error codes are available in the interactive API reference (coming soon).

SDKs & Libraries

Official JavaScript/Python SDKs are coming soon. In the meantime, use the REST API directly with any HTTP client.