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Head to head · Backlink data · October 2026 research run

Majestic API vs SE Ranking API + MCP

SE Ranking API + MCP scores 50.9 (D) on agent readiness against Majestic API's 33.4 (F), and leads in 6 of 7 scored categories. Majestic API leads on security & auth. Both do backlink data.

Best SEO and search visibility data for AI agents · All 45 seo comparisons

Majestic APIMajestic (Majestic-12 Limited) · HTTP API F33.4/100#937 of 950 SE Ranking API + MCPSE Ranking (SER Acquisition Inc.) · HTTP API D50.9/100#763 of 950

Which one, for what

Majestic API F

Good for An agent that needs backlink, referring domain, anchor text and Trust Flow data in volume for an owner who already pays for the API plan.

Ahead on

  • Security & auth, 32 against 21

Watch for

Clause 14.1(f) of the supply terms forbids querying Majestic's database or servers with automated tools without prior permission. This matters before any probe is run

SE Ranking API + MCP D

Good for An agent that needs keyword, backlink, domain and AI search visibility data at a published price per call, or that manages rank tracking projects for an SE Ranking customer.

Ahead on

  • Reliability, 51 against 17
  • Schema & documentation, 58 against 44
  • Payments & pricing, 40 against 15
  • Maintenance & community, 79 against 22
  • Transparency & trust, 71 against 53

Watch for

No scoped or read-only keys. The MCP docs say a key has the same access as the account, including Project API deletes

Score by category

CategoryWeight this runMajestic APISE Ranking API + MCPEdge
Reliability16%201751SE Ranking API + MCP +34
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24458SE Ranking API + MCP +14
Agent ergonomics13%16.25458SE Ranking API + MCP +4
Security & auth14%17.53221Majestic API +11
Payments & pricing10%12.51540SE Ranking API + MCP +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.82279SE Ranking API + MCP +57
Transparency & trust7%8.85371SE Ranking API + MCP +18
Negative events≤1500
Total33.4 · F50.9 · D

Facts side by side

FactMajestic APISE Ranking API + MCP
KindHTTP APIHTTP API
VendorMajestic (Majestic-12 Limited)SE Ranking (SER Acquisition Inc.)
Hosted endpointhttps://api.majestic.comhttps://api.seranking.com
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyOAuth or key
PricingPaidPay per use
Price for backlink datanot published$0.0002 per record
x402nono
LicenceProprietary service under Majestic's Terms and Conditions. The Python 3 connector on GitHub carries a BSD-style licence fileProprietary service under the SE Ranking API Terms of Service. The OpenAPI file and the Claude skills on GitHub are MIT
Read-only variant documentednoyes
llms.txtyesno
MCP registrynot listedcom.seranking/mcp
Last releasenone2026-09-28
Terms last updatedno date givenno date given
Privacy policy last updated2026-04-012026-06-25
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticeyesyes
Arbitration or class-action waivernot found in the textnot found in the text
Popularity3 stars0 stars

Verdicts

Majestic API

Each command's cost in units is published and a sandbox endpoint returns sample data without spending allowance. API access starts at $399.99 a month with no trial, and no OpenAPI file, status page, numeric rate limit, SLA or API changelog was found. The supply terms require permission before querying with automated tools.

SE Ranking API + MCP

Every Data API endpoint has a published credit cost, credits sell from $50 for 250,000 with no expiry, and a 14-day trial needs no card. Keys carry full account access with no scopes or read-only mode, the key may travel in the URL, and no security page, SLA or llms.txt was found.

Before you call either

Majestic API

  1. Send requests by HTTPS POST with app_api_key in the body. The docs show GET URLs for demonstration only and plain HTTP still works
  2. Always set datasource=fresh or datasource=historic. Without it the Historic Index is used when the plan includes it
  3. Call GetSubscriptionInfo (no cost) before a large pull. GetBackLinkData spends 5,000 analysis units a call plus one retrieval unit a row
  4. Read columns by header name, not position. The docs say column order can change between requests and Majestic may vary rows and columns at any time
  5. Develop against https://developer.majestic.com/api/json, which costs no units, then switch the host to api.majestic.com
  6. Ask the owner to confirm Majestic's permission for automated querying first. Clause 14.1(f) of the terms requires it

SE Ranking API + MCP

  1. Send the key as Authorization: Token <key>, not Bearer and not ?apikey=, so it stays out of URLs and logs
  2. Call GET /v1/account/subscription (0 credits) and read units_left before a large pull. A short balance returns Insufficient funds
  3. Set limit and cols on per-record endpoints. Backlink summaries cost 100 credits a target and keyword rows 10 credits each
  4. Stay under 10 requests a second on the Data API and 5 on the Project API per key. Repeated overruns block the Project API for 10 minutes
  5. Ask the owner before any Project API or PROJECT_* create, update or delete call. The key has no read-only mode and nothing confirms a delete

Questions

Which is better for AI agents, Majestic API or SE Ranking API + MCP?

SE Ranking API + MCP scores 50.9 (D) on agent readiness against Majestic API's 33.4 (F), and leads in 6 of 7 scored categories. Majestic API leads on security & auth.

Do Majestic API and SE Ranking API + MCP need an API key?

Majestic API needs an API key. SE Ranking API + MCP takes an API key or an OAuth sign-in.

Can an agent call Majestic API and SE Ranking API + MCP without installing anything?

Yes. Majestic API has a hosted endpoint at https://api.majestic.com and SE Ranking API + MCP at https://api.seranking.com.

Other comparisons with Majestic API or SE Ranking API + MCP

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