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Early access

Majestic MCP server

Compare site metrics, inspect backlinks and research referring domains with a bounded number of results. Access is gated: request enablement for your organization before connecting.

Request early accessSee 5 actions ↓
AnalyticsAPI keyMCP + RESTmajestic.com
AUDIT LOG · MAJESTICPOLICY: acme-support
09:41:07 · claude · u_8f2read
majestic.get_ref_domains
Compare referring domains✓ allowed · 212ms
09:41:08 · claude · u_8f2read
majestic.get_anchor_text
Get anchor text distribution✓ allowed · 164ms
ILLUSTRATIVE POLICY TRACE · NOT A LIVE RECEIPT
01 · USE CASES

Agent workflows for Majestic.

01

Get index metrics

Use when comparing headline metrics for up to 100 domains or URLs, not retrieving backlinks. MayExist results are estimates. Check allowances first: one index item unit per input item.

02

Get backlinks

Use when inspecting up to 100 backlinks per page, not for headline counts; use get_index_item_info for those. Check allowances first. Costs 5000 analysis units plus one retrieval unit per row.

03

Compare referring domains

Use when comparing referring domains across up to four sites, not for individual backlinks or a full export. Returns up to 100 domains. Check allowances first: 1000 analysis units plus one retrieval unit per row.

02 · ACTIONS

5 Majestic actions, graded by risk.

These actions come from the Arc0 registry. Your identity, provider permissions and Arc0 policies determine which actions can run.

read

5

Look things up, subject to your permissions.

  • majestic.get_index_item_info
    Get index metrics

    Use when comparing headline metrics for up to 100 domains or URLs, not retrieving backlinks. MayExist results are estimates. Check allowances first: one index item unit per input item.

  • majestic.get_backlink_data
    Get backlinks

    Use when inspecting up to 100 backlinks per page, not for headline counts; use get_index_item_info for those. Check allowances first. Costs 5000 analysis units plus one retrieval unit per row.

  • majestic.get_ref_domains
    Compare referring domains

    Use when comparing referring domains across up to four sites, not for individual backlinks or a full export. Returns up to 100 domains. Check allowances first: 1000 analysis units plus one retrieval unit per row.

  • majestic.get_anchor_text
    Get anchor text distribution

    Use when auditing aggregated anchor text, not retrieving individual links. Returns up to 100 anchors per page. Check allowances first: 1000 analysis units plus one retrieval unit per row.

  • majestic.get_subscription_info
    Get subscription usage

    Use when checking customer identity and remaining allowances before a paid query, not for backlink metrics. Consumes no resource units.

write

0

Create and change things. Allow, or ask the user first.

  • No write actions.

destructive

0

Delete, cancel or archive. Ask first, or deny outright.

  • No destructive actions.
03 · POLICIES AND AUDIT

Control access to Majestic.

After early access is enabled, connect the intended Majestic account, authorize your AI client and set policies for its tools.

Provider permissions and Arc0 policy both apply. Allow reads, require approval for selected writes, or deny destructive actions. The audit log records execution decisions.

Configure policies and approvals

Example policy choices

  • Read actions: allow where authorized

Arc0 MCP endpoint: https://api.arc0.ai/mcp

04 · AUTH AND DATA

How Majestic connects.

Connect Majestic using API key. OAuth grants the provider scopes shown during consent; API keys and other credentials retain the permissions configured at the provider. Arc0 stores credentials in its encrypted vault and does not pass them to the model. Disconnect to remove access through Arc0; revoke a key at the provider to invalidate it there. Token refresh and provider-side revocation depend on the authentication lane and provider.

The connection serves authorized calls through Arc0 MCP and REST. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · AI CLIENTS

Use Majestic with your AI client.

Request access to Majestic first. An Arc0 administrator must enable it for your organization before these actions appear. Then authorize your AI client separately. It only receives tools and accounts allowed for that identity.

Majestic with Claude

Claude Desktop + Claude Code

  1. In Claude Desktop, add Arc0 through the remote MCP settings and use OAuth. Follow the generic remote-client steps if your account’s interface differs.
  2. For Claude Code, run the command below. Open /mcp, select Arc0, and authenticate in your browser. Select your workspace and review access.
  3. Check the connection with claude mcp get arc0.
claude mcp add --transport http --scope user arc0 https://api.arc0.ai/mcp
Full MCP setup and troubleshooting
All apps for Claude
Majestic with ChatGPT

ChatGPT on the web

  1. Open Plugins in ChatGPT, select the plus button, then Add custom MCP server.
  2. Name it Arc0, enter the server URL below, and choose OAuth. Use dynamic client registration if asked; no Arc0 API key is needed.
  3. Review the notice and select Create as a plugin. Complete Arc0 sign-in, workspace selection and consent, then install and select the plugin in your conversation. Labels and access vary by account; managed workspaces may require administrator approval.
https://api.arc0.ai/mcp
Full MCP setup and troubleshooting
All apps for ChatGPT
Majestic with OpenAI Codex

Codex app + CLI

  1. Run the registration command below. The app and CLI share ~/.codex/config.toml.
  2. Complete browser OAuth, choose your Arc0 workspace, and review access. If authentication does not start, run codex mcp login arc0.
  3. Check codex mcp list, then open a new Codex chat. Inspect an existing arc0 entry before changing it.
codex mcp add arc0 --url https://api.arc0.ai/mcp
Full MCP setup and troubleshooting
All apps for OpenAI Codex
Majestic with Cursor

Remote MCP setup

  1. Add Arc0 in your client’s remote MCP settings using the server URL below.
  2. Choose OAuth, sign in to Arc0, select the intended workspace and review access.
  3. Confirm the server is connected and start with an allowed read. These are generic remote-MCP steps; consult your client’s settings for its current interface.
https://api.arc0.ai/mcp
Full MCP setup and troubleshooting
All apps for Cursor
Majestic with VS Code

Remote MCP setup

  1. Add a remote HTTP MCP server named Arc0 using the URL below.
  2. Use OAuth and finish Arc0 sign-in, workspace selection and consent.
  3. Confirm discovery succeeds before requesting a read. These are generic remote-MCP steps; client UI and availability may differ.
https://api.arc0.ai/mcp
Full MCP setup and troubleshooting
Majestic with Any MCP client

Streamable HTTP

  1. Use a client that supports remote MCP over Streamable HTTP. Add the server URL below and choose OAuth.
  2. For a client without OAuth, use a self-bound API key with execute permission in the X-API-Key header. Store it in secret storage or an environment variable, outside source control. Never send both an API key and an OAuth bearer token.
  3. Use the MCP clients guide for the SDK transport example and Embedded identity for business-managed end users.
https://api.arc0.ai/mcp
Full MCP setup and troubleshooting

After setup, ask your agent to find an allowed read action, load its schema, and execute it on the intended account. Check Activity for the receipt. A connected MCP client alone does not confirm a successful provider call.

06 · RELATED

More analytics apps.

SpyFuEarly access · 7 actionsSerpstatEarly access · 7 actionsSE RankingEarly access · 6 actionsGongEarly access · 5 actionsSerpApiEarly access · 7 actionsPeople Data LabsEarly access · 8 actionsPostHogEarly access · 7 actionsAmplitudeEarly access · 7 actions
ALL ANALYTICS APPS →
07 · FAQ

Majestic and Arc0, answered.

Q01

Does Majestic work with Claude Desktop and Claude Code?

Yes, after early access is enabled for your organization and you connect the intended account. Use Arc0’s remote MCP endpoint with OAuth. Claude Code has a documented registration command; Desktop uses the generic remote-client setup.

Q02

Can I use Majestic with OpenAI Codex, ChatGPT and Cursor?

Yes, after early access is enabled for your organization and you connect the intended account. Codex and ChatGPT have setup instructions in Arc0’s MCP clients guide. Cursor uses the generic remote-MCP steps. Tool access remains scoped to the authorized identity.

Q03

Is this the official Majestic MCP server?

This is Arc0’s integration page, not a claim of an official Majestic server. Arc0 adds a shared connection, policy and audit experience across apps. Consult Majestic for its own current MCP offerings.

Q04

Which Majestic actions are supported?

5 registry-defined actions: 5 read, 0 write and 0 destructive. Provider permissions, access enablement and Arc0 policy determine what can execute.

Q05

Which permissions does Majestic need?

Connect Majestic using API key. OAuth grants the provider scopes shown during consent; API keys and other credentials retain the permissions configured at the provider. Arc0 stores credentials in its encrypted vault and does not pass them to the model. Disconnect to remove access through Arc0; revoke a key at the provider to invalidate it there. Token refresh and provider-side revocation depend on the authentication lane and provider.

Q06

Can I restrict writes in Majestic?

You can deny write and destructive actions or require approval. Provider scopes and Arc0 action policies are separate controls; a policy does not grant additional provider permissions.

Q07

What does Majestic through Arc0 cost?

See Arc0 pricing for current connectivity plans. The provider may require its own subscription or charge per request. Arc0 plan allowances do not make third-party data or paid actions free.

Get started

Request Majestic access.

Majestic MCP server: 5 actions including get index metrics, get backlinks, compare referring domains. Request early access through Arc0.

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Free to build · MCP + REST · Audit log on every plan

Majestic and its logo are trademarks of their respective owners. Arc0 is not affiliated with or endorsed by Majestic.