API for Competitor Backlink Analysis to Scale Your Agency
Use CitationBench's competitor backlink analysis API to turn SERP data into outreach campaigns. One API call moves from competitor backlinks to 50 personalized link-building email drafts.
Manual Backlink Research Does Not Scale
Agencies managing dozens of clients cannot afford slow, fragmented competitor backlink workflows.
Backlink data without action
Tools like Ahrefs export competitor backlinks but stop there — turning data into outreach is still manual work.
One client at a time
Running competitor backlink analysis per client across 10 or more brands means hours lost every week on repetitive pulls.
Outreach pipeline falls apart
Research, contact discovery, email drafting, and follow-up live in separate tools with no shared state or CRM.
The fix
One API. Competitor Backlinks to Sent Outreach.
CitationBench connects competitor backlink research to Apollo contact discovery to Instantly email drafting in a single API call. Pull backlink profiles via `research.competitor.backlinks`, then fire a `competitor_outreach` campaign to turn those links into 50 personalized drafts — all within one workspace per client.
Every Tool From Backlink Data to Closed Links
Five purpose-built features that take you from competitor URL to active link-building campaign without leaving the API.
Competitor Research
Pull Competitor Backlinks via API
Add any competitor URL and call `research.competitor.backlinks` to retrieve their backlink profile. Also surfaces keyword universes and overlap matrices via `research.competitor.keywords` and `research.competitor.overlap`.
- Backlink profile extraction
- Keyword universe pull
- Domain overlap matrix
Link Outreach
Turn Competitor Links Into Outreach Campaigns
Seeds the outreach pipeline directly from a competitor's backlink profile via `link_building.competitor_outreach.create`. Targets sites already linking to competitors and generates up to 50 personalized drafts for bulk review before sending.
- Competitor-seeded targeting
- 50 personalized drafts
- Bulk-approve before send
SERP to Email
Keyword to 50 Outreach Drafts in One Call
One `POST /v1/link-building/serp-outreach` call scrapes the SERP, runs Apollo contact discovery, and generates 50 personalized link-building email drafts via Instantly. Campaign metrics and pause/resume included.
- SERP scrape to contacts
- Apollo-powered discovery
- Instantly email integration
Relationship Tracking
CRM for Every Link Building Relationship
Track target domains, contact details, relationship status, and full event history via `link_building.crm.*`. Every account moves through a full lifecycle from first contact to active link partner, scoped per client workspace.
- Account and contact tracking
- Full event timeline
- Per-workspace isolation
Agency Architecture
One API Key for All Client Workspaces
Manage every client brand under a single master API key. Scope all competitor research, backlink pulls, and outreach campaigns per client using the `X-Workspace-Id` header. White-label-ready with per-workspace settings isolation.
- X-Workspace-Id scoping
- Bulk actions across clients
- White-label-ready
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 Your Competitor Backlink Analysis API
CitationBench turns competitor backlink data into running outreach campaigns across all your client workspaces from a single API.
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