# Backlink API for AI Agents — No Signup, REST + MCP > Backlink API for AI agents via REST + MCP. Editorial-authority scores from a proprietary web-scale link index. Try it free, no signup. - Canonical page: https://backlinkmcp.com/ - MCP endpoint: `POST https://backlinkmcp.com/api/mcp` (JSON-RPC 2.0, streamable HTTP, no install, 13 tools) - REST: `GET https://backlinkmcp.com/api/v1/authority?domain=example.com`, `/api/v1/backlinks?domain=example.com` ([docs](https://backlinkmcp.com/docs.md)) - Pricing: Free = 10 lookups/day per IP, 25 backlink rows, no signup. Pro = $19/mo, unlimited daily lookups, 100 rows, `ai_visibility_report` (operator-issued; self-serve checkout is not live) - Data limits: the index is domain-level (referring domains with authority + outbound counts). No per-link URLs, anchor text or rel/dofollow. `domain_rating` is not Moz DA and not a Google factor - Site index for agents: https://backlinkmcp.com/llms.txt --- API SUPERSERVER Backlink Intelligence # Backlink data your agent can actually query. An MCP server + REST API for domain authority and backlink graphs — built so any coding agent, chatbot, or script can call it directly. No dashboard required. Updated 2026-10-15 Try it free [MCP + REST docs](https://backlinkmcp.com/docs) Powered by a proprietary web-scale link graph with editorial-authority scoring — the signal that high-trust wiki, edu, gov and news links carry, resistant to link-farm inflation, at a fraction of enterprise-crawler prices. BACKLINKMCP_QUERY_RESULT { "domain": "stripe.com", "found": true, "domain_rating": 80.9, "referring_domains": 702082, "top_linkers": [ {"source": "googleapis.com", "links_out": 2570}, {"source": "cloudflare.com", "links_out": 4755} ] } Capabilities ## The backlink layer your agent is missing. One graph. Four ways in — score a domain, rank its linkers, list the top ranked referring domains, or wire it straight into your agent's tool loop. 01 — DOMAIN AUTHORITY ### Editorial-authority scoring, not link-farm counting. Weighted toward wiki, edu, gov, and news links — the signal that's expensive to fake and cheap to trust. - Domain rating + referring-domain count - Wiki / edu / gov / news-weighted - Farm-resistant by construction 02 — TOP LINKERS ### Ranked by the authority of who's linking. Not just a count of inlinks — a ranked view of which sources actually carry weight. - Ranked by linker authority - Outbound-link counts per source - Live link verification via verify_link_live 03 — RANKED LINKING DOMAINS ### Total inlinks, plus the top 100 that matter. A ranked slice of referring domains around a target — 25 on Free, 100 on Pro — not a dump of every row in the index. - Total inlink counts - Up to 100 ranked linking domains on Pro (25 free) - 7-day cached results for speed 04 — MCP + REST ### One URL for agents, one for scripts. Drop-in remote MCP server for Claude Desktop, Claude Code, and Cursor — or hit the REST endpoints directly. - Remote MCP server, zero install - Plain REST endpoints for scripts - No key needed on the free tier Try It ## Query the live engine. Same call the API and MCP server make — no signup required. MCP Install ## Add it to your agent in one block. Add as a remote MCP server in Claude Desktop, Claude Code, Cursor, or any MCP client. ``` { "mcpServers": { "backlinkmcp": { "url": "https://backlinkmcp.com/api/mcp" } } } ``` Tools exposed: `domain_authority_score`, `top_linkers_for_domain`, `backlinks_for_domain`, `verify_link_live`, `find_link_prospects`, `flag_toxic_links`, `common_linkers`, `ai_visibility_report` (Pro), `ai_crawler_audit`, `site_audit`, `schema_validate`, `core_web_vitals`, `indexnow_submit`. ``` curl "https://backlinkmcp.com/api/v1/authority?domain=stripe.com" curl "https://backlinkmcp.com/api/v1/backlinks?domain=stripe.com" ``` Plain REST, no key needed for the free tier (10 lookups/day per IP). The Engine ## Built on SuperServer — our backlink graph engine. SuperServer is the web-graph index behind every BacklinkMCP endpoint: a proprietary web-scale link graph, scored for editorial authority instead of raw link volume. WEB-SCALE PROPRIETARY LINK INDEX 7-DAY REDIS-CACHED RESULTS EDITORIAL AUTHORITY SCORING New agent tools and index upgrades through 2026 — live link verification (verify_link_live) already shipped. Pricing ## Free to start. $19/mo to scale. **Free** — 10 lookups/day per IP, no signup. **Pro** — $19/mo unlimited daily lookups, full ranked linker lists (up to 100). Ahrefs starts at $129/mo. [See pricing](https://backlinkmcp.com/pricing) FAQ ## Straight answers. **What is BacklinkMCP?** A remote MCP server and REST API for domain authority and referring-domain graphs. Built so an agent can query the index — not a dashboard you sit in. **Is this per-link URL and anchor data?** No. The index is domain-level: referring domain, authority, outbound count. No per-link URL, anchor text, or rel/dofollow fields. **Does flag_toxic_links mean I should disavow?** No. It is a heuristic review queue on the low-authority tail, not proof a domain is toxic and not an automatic disavow list. **MCP or REST?** MCP when the client is an agent (Claude, Cursor). REST when you own the HTTP client (scripts, cron, n8n). Same engine both ways. Details on the [MCP vs REST article](https://backlinkmcp.com/articles/mcp-vs-rest-api). **What does free vs Pro include?** Free: 10 lookups/day per IP, 25 backlink rows, no signup. Pro $19/mo: unlimited daily lookups, 100 rows. Operator-issued today — self-serve checkout is not live. [Pricing](https://backlinkmcp.com/pricing). **How do I install the MCP server?** Point your client at `https://backlinkmcp.com/api/mcp`. Step-by-step on [docs](https://backlinkmcp.com/docs#mcp-install). **Can ChatGPT or Claude check backlinks on their own?** No — without a tool they answer from training data and guess. We ran the same backlink question through three LLMs and none could look it up: [can LLMs check backlinks?](https://backlinkmcp.com/articles/can-llms-check-backlinks) That test is why this MCP server exists. **Can I try it without installing anything?** Yes — the [free backlink checker](https://backlinkmcp.com/free-backlink-checker) runs the same authority lookup in the browser, no signup. ## Related tools & guides [MCP + REST docs](https://backlinkmcp.com/docs) [Free MCP for SEO](https://backlinkmcp.com/mcp-server-for-seo) [Free backlink checker API](https://backlinkmcp.com/free-backlink-checker) [Ahrefs MCP alternative](https://backlinkmcp.com/ahrefs-mcp-alternative) [Can ChatGPT check backlinks?](https://backlinkmcp.com/articles/can-llms-check-backlinks) [AI-search playbook](https://backlinkmcp.com/articles/how-to-rank-in-ai-search) [10 SEO MCP servers compared](https://backlinkmcp.com/articles/best-mcp-servers-for-seo) [Backlink APIs compared](https://backlinkmcp.com/articles/best-backlink-apis)