API for Finding Link Building Partners at Scale
CitationBench's API for finding link-building partners turns a single keyword into 50 personalized outreach drafts using Apollo contact discovery and Instantly email integration.
# Discover partners from a competitor SERP in one callPOST /v1/link-building/serp-outreach> { "keyword": "best project management tools", "limit": 50 }job_id: job_4mz9r · status: running# Apollo contacts resolved, drafts generating via Instantly✓ SERP fetched · 12 target domains identified✓ 50 personalized outreach drafts ready · awaiting_approval# Review and bulk-approve before any email is sentlink_building.campaign.list{ "campaigns": [{ "id": "cmp_9xp1k", "drafts": 50, "status": "pending_review" }] }Manual Outreach Is Killing Your Scale
Fragmented tools and manual research cap how many link-building campaigns you can run across clients.
Research Eats Your Bandwidth
Manually vetting backlink prospects across dozens of clients leaves little time for actual outreach or campaign management.
Outreach Stays Generic and Cold
Without automated personalization, email templates get low reply rates and partner discovery stalls across your client portfolio.
No Single System Tracks Relationships
Spreadsheets and disconnected CRMs mean link opportunities slip through the cracks before a relationship is ever established.
The fix
One API Call. Fifty Partner Drafts. Zero Spreadsheets.
CitationBench automates link-building partner discovery using Apollo data, generates 50 personalized outreach drafts via Instantly, and tracks every relationship in a built-in CRM — all from a single API call or MCP tool.
Every Tool Your Link Building Workflow Needs
From SERP analysis to contact discovery to relationship tracking, CitationBench covers the full link-building pipeline in one composable API.
Partner Discovery
Keyword to 50 Partner Drafts Instantly
Submit one keyword to `POST /v1/link-building/serp-outreach` and CitationBench scrapes the SERP, resolves contacts via Apollo, and generates 50 personalized link-building email drafts ready for your review in Instantly.
- One keyword triggers full pipeline
- Apollo contact resolution built in
- Bulk-approve before any send
Competitive Links
Target Sites Already Linking to Competitors
Seed outreach directly from a competitor's backlink profile via `link_building.competitor_outreach.create`. CitationBench targets domains already proven to link in your niche and generates personalized drafts in the same pipeline.
- Seeds from competitor backlink profile
- Same Apollo-powered draft pipeline
- Bulk approve before sending
Relationship Tracking
Full CRM for Every Link Partner
Track every target domain, contact, and relationship status via `link_building.crm.*`. Log outreach events, replies, and notes so no prospect falls through the cracks across your client campaigns.
- Tracks accounts and contacts
- Logs emails replies and notes
- Full lifecycle from pitch to live link
Campaign Ops
Manage All Outreach Campaigns in One View
Monitor all active SERP and competitor outreach campaigns via `link_building.campaign.list`. Track response rates, pause underperforming campaigns, and manage sending across all client workspaces from one surface.
- Unified metrics across campaigns
- Pause and resume any campaign
- Response rate tracking per client
Backlink Research
Pull Any Competitor Backlink Profile
Add competitor URLs via `research.competitor.add` to pull their full backlink profiles and keyword universes. Overlap matrices reveal exactly where competitors earn links you should be targeting next.
- Add competitor URLs instantly
- Keyword and backlink overlap matrix
- Feeds directly into outreach pipeline
How it works
From sign-up to first call in five minutes.
Sign up and get your key
An `sk_test_*` key lands in your dashboard instantly. No demo gate — start calling real endpoints with shape-complete responses.
Add the MCP server or hit REST
`claude mcp add citationbench https://mcp.citationbench.com/mcp` from Claude Code, Cursor, or any MCP client. Or `curl` against `api.citationbench.com/v1/*` directly.
Run a tool or invoke an agent
Every tool returns shape-complete demo data without auth, so your agent works before the user signs up. Tools across research, production, indexing, link-building, and agents.
Scope to a workspace and ship
Add `X-Workspace-Id: ws_***` to scope per client. Switch to a live `sk_live_*` key when you're ready. Same API surface, same SDK.
Why CitationBench
Built for production, agency-scale, and AI-agent-first.
~35 tools, one MCP server
Hosted at mcp.citationbench.com/mcp. Works with Claude Code, Cursor, Claude Desktop, Windsurf, and ChatGPT Apps. No self-hosting required.
Durable jobs, not fire-and-forget
Every long-running call runs on Cyclonic workers — survives restarts, cancellable, resumable, streams via SSE. Production-safe by default.
Multi-workspace from day one
One master API key, N client workspaces. Switch with a single `X-Workspace-Id` header. Per-client data isolation, bulk ops across all of them.
Demo mode out of the box
Every endpoint responds in shape-complete demo mode without auth, so you can build the agent before the user signs up.
FAQ
Common questions
Start Finding Link Building Partners via API
One API call turns a keyword into 50 ready-to-approve outreach drafts with Apollo contacts and Instantly delivery.
Start Free