Similarweb
by Similarweb
Query website traffic, audience, referral and app-store data from your AI assistant. 22 listed read tools, API-key or OAuth sign-in, metered against your Similarweb data-credit allowance.
Verified connector
Listed by Anthropic as a partner connector in its Connectors Directory.
Connection checked by Agentman on .
Anthropic states this reflects the level of review a connector received, not a security audit.
Connect Similarweb via MCP
https://mcp.similarweb.comWorks in any MCP-compatible client. In Agentman Studio it is one click — no config file to edit.
Similarweb Tools & Capabilities (22)
Tool names from Anthropic's directory listing. This server requires sign-in, so we could not read tool descriptions or parameter schemas.
Frequently asked questions
Which Similarweb plans include MCP access?
Similarweb names three: the API-only standalone package, Business, and Enterprise. Its MCP setup page lists a subscription with API access as the first prerequisite, and its Claude guide repeats that API access is included on Business and Enterprise plans and on the API standalone package. A platform-only Similarweb login without API access cannot connect the server.
Can I use a Batch API key to connect the Similarweb MCP server?
Yes. Similarweb states the connector works with any API key as long as the key is active. That is worth knowing because the platform issues REST and Batch keys separately, under Settings then Account, and a team that only provisioned Batch keys does not need a second one. Keys must be toggled active or the client reports an invalid key.
Why does my Similarweb query return no data for a domain?
Usually the domain string or its traffic volume. Similarweb lists four causes: a format error such as including www or https, uppercase characters, insufficient traffic to meet its minimum reporting threshold, and a domain too new to have accumulated data. Pass bare lowercase domains such as example.com. No credits are charged when no data is returned.
Do Similarweb MCP queries consume my API data credits?
Yes. Similarweb states MCP uses the same data credits as standard API calls, drawn from the same allocation. Consumption scales with the volume returned rather than the number of calls, so one daily-granularity request over several countries and months can cost hundreds of credits. Usage appears in the platform under Account Settings then Data Credits Management.
What happens when my Similarweb API credits run out?
Queries start failing rather than silently billing more. Similarweb states that once the allocation is exhausted for the billing period, MCP queries return an error, and its REST error table maps exhausted credits to HTTP 403 alongside an invalid key. Unused credits do not roll over; contact your account manager to raise the allocation.
The connector is connected but Claude is not returning Similarweb data. What should I check?
Check the tool permissions in Claude first. Similarweb states that Similarweb tools set to Blocked under Tool permissions stop the connector returning data, and advises setting them to Always allow or Needs approval instead. If tools are permitted and queries still fail, confirm the API key is active and the subscription still includes API access.
Why do Similarweb numbers in Claude differ from the Similarweb platform?
Almost always a mismatched query rather than a data fault. Similarweb advises confirming that country, date range and web source — desktop, mobile web or total — match in both places. It also concedes that aggregation methodology differs slightly between the platform UI and the API, which accounts for minor residual variance.
How recent is the data the Similarweb MCP server returns?
Not live. Similarweb states daily data is released within 72 hours and monthly data by the 10th of the following month, and says explicitly that real-time data is unavailable because it measures actual user behaviour rather than live traffic. Its Claude guide adds that most datasets update monthly, with the prior month available by the end of the next.
Sources
- Similarweb MCP setup — https://docs.similarweb.com/api-v5/mcp/mcp-setup (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb Claude integration guide — https://docs.similarweb.com/api-v5/similarweb-mcp/available-integrations/claude-integration (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb API FAQ — https://docs.similarweb.com/api-v5/support-and-faq/faq (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb data credits guide — https://docs.similarweb.com/api-v5/guides/data-credits-calculations (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb error handling and troubleshooting — https://docs.similarweb.com/api-v5/guides/error-handling-and-troubleshooting (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb authentication guide — https://docs.similarweb.com/api-v5/getting-started/authentication (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb check-capabilities reference — https://docs.similarweb.com/api-v5/support-and-faq/check-capabilities (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb available-data guide — https://docs.similarweb.com/api-v5/guides/available-data (fetched 2026-08-18) · retrieved 2026-08-18
- Similarweb API v5 reference, all 112 endpoint pages — enumerated from https://docs.similarweb.com/api-v5/llms.txt (fetched 2026-08-18) · retrieved 2026-08-18
- Live OAuth descriptor probes on
mcp.similarweb.comandmcp-auth.similarweb.com— 2026-08-18 · retrieved 2026-08-18 - Live unauthenticated
initializereturning HTTP 401 withWWW-Authenticate— 2026-08-18 · retrieved 2026-08-18 - Anthropic connector directory — https://claude.ai/directory/80862d08-1022-4d86-816d-ee9b500d6b90 (snapshot 2026-08-16) · retrieved 2026-08-16
Use in Agentman
Connect once and your agents call these tools on their own — on a schedule, in a workflow, with nobody at the keyboard.
Open in Agentman StudioServer Info
- Category
- Productivity
- Developer
- Similarweb
- Tools
- 22
- Domain
- mcp.similarweb.com
Using Claude Desktop or another MCP client? Setup docs — the connection URL above works anywhere.