SimilarWeb Digital Rank API for AI agents

SimilarWeb's Digital Rank API gives access to global website ranking data for competitive benchmarking. Marketers and analysts use it to see how a site's traffic rank compares to competitors. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

AnalyticsAPI keyMCP + RESTsimilarweb.com
AUDIT LOG · SIMILARWEB DIGITAL RANK APIPOLICY: acme-support
09:41:07 · claude · u_8f2read
similarweb_digital_rank_api.get_subscription_status
Get Subscription Status✓ allowed · 212ms
09:41:08 · claude · u_8f2read
similarweb_digital_rank_api.get_rank_tracker_describe
Get Rank Tracker Campaign Metadata✓ allowed · 164ms
EVERY SIMILARWEB DIGITAL RANK API CALL, ON THE RECORD
01 · USE CASES

What agents do in SimilarWeb Digital Rank API.

01

Check a competitor's rank

Pull a site's Similar Rank position to compare its estimated traffic against competitors.

02

Pull top sites for a category

Retrieve the top-ranked sites in a category or vertical for a competitive landscape review.

03

Verify quota before a bulk pull

Check subscription status and remaining quota before running a large batch of rank lookups.

02 · ACTIONS

3 SimilarWeb Digital Rank API actions, graded by risk.

Every SimilarWeb Digital Rank API action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

3

Look things up. Allowed by default.

  • similarweb_digital_rank_api.get_subscription_status
    Get Subscription Status
  • similarweb_digital_rank_api.get_rank_tracker_describe
    Get Rank Tracker Campaign Metadata
  • similarweb_digital_rank_api.get_similar_rank_top_sites
    Get Similar Rank Top Sites

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 · HOW IT WORKS

SimilarWeb Digital Rank API in three steps.

  1. 01Your users connect SimilarWeb Digital Rank APIThey add their SimilarWeb Digital Rank API api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, and writes like “updates” can wait for the user to approve.
  3. 03Any agent can actYour agent calls SimilarWeb Digital Rank API through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('similarweb_digital_rank_api', {
  read: 'allow',
  write: 'ask',        
  destructive: 'deny',  
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How SimilarWeb Digital Rank API connects.

Users add their SimilarWeb Digital Rank API api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same SimilarWeb Digital Rank API connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. 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 · WORKS WITH

Use SimilarWeb Digital Rank API from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
07 · FAQ

SimilarWeb Digital Rank API and Arc0, answered.

Q01

Can I use SimilarWeb Digital Rank API with Claude, ChatGPT or Cursor?

Yes. Connect SimilarWeb Digital Rank API to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the SimilarWeb Digital Rank API actions you allow.

Q02

How do users connect SimilarWeb Digital Rank API?

Users add their SimilarWeb Digital Rank API api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which SimilarWeb Digital Rank API actions can my agent take?

3 in total: 3 read, 0 write and 0 destructive. Your policies decide which of them each agent may call.

Q04

Can I make my agent read-only in SimilarWeb Digital Rank API?

Yes. Allow read actions and deny writes in the SimilarWeb Digital Rank API policy. Your agent can still look things up, and any write it attempts is blocked and logged.

Q05

Can my own backend call SimilarWeb Digital Rank API too?

Yes. The same SimilarWeb Digital Rank API connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug SimilarWeb Digital Rank API into your agent.

Your users connect SimilarWeb Digital Rank API once, under your brand. Your agent gets 3 actions behind your policies, with every call on the record.

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