com.mcparmory/klaviyo
Klaviyo
Create and manage email campaigns, lists, and marketing automation
alive probed 2026-10-25 · unchanged since 2026-10-24
295tools
273ktokens in Claude Opus 5.5
136.3 %of Claude's 200k window
120×the median server
13.6 sto initialize
1.1 sto list tools
- Run it
- uvx mcparmory-klaviyo==1.0.3 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- Klaviyo 4.1.3
- Capabilities
- logging, prompts, resources, tools
- Instructions
- none
- Of a 1M window
- 27.3 % of a 1M context window
- Count
- 273k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 276k. The o200k_base estimate is 151k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/mcparmory/registry
- Registry
- active, updated 2026-05-12 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.80×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| update_segment | 48 077 | 26 703 | 18 % |
| create_segment | 47 951 | 26 633 | 18 % |
| create_form | 30 458 | 16 917 | 11 % |
| create_client_subscription | 4 593 | 2 551 | 2 % |
| subscribe_profiles_bulk | 3 793 | 2 107 | 1 % |
Compare this server with others.
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- This server is in the heaviest 10 % of the registry. Its 5 most expensive tools are 49 % of the cost. Shorter descriptions, fewer optional parameters and fewer tools cut the cost. The command npx mcpcost --url <endpoint> --tools 50 lists every tool with its cost.