Connect Anthropic Usage to Cloptima

6 min readUpdated June 2026

Point your Anthropic client at Cloptima

Set the Anthropic base URL to https://api.cloptima.ai (the client appends /v1/messages) and pass your Cloptima virtual key as the API key — it's sent as x-api-key. Add x-cloptima-* headers for attribution.

python

from anthropic import Anthropic

client = Anthropic(
    base_url="https://api.cloptima.ai",   # client calls /v1/messages
    api_key="clop_vk_dPXO67p…",              # sent as x-api-key
)

msg = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=512,
    messages=[{"role": "user", "content": "..."}],
    extra_headers={"x-cloptima-team": "platform", "x-cloptima-app": "assistant"},
)

The same endpoint also fronts non-Anthropic models

Because Cloptima translates between protocols, the Anthropic surface isn't limited to Claude. Any tool that speaks the Anthropic Messages API can reach OpenAI, Gemini, or Bedrock models through the same governed key — see the Claude Code guide for a developer-friendly example.

Pick the protocol your stack already uses; Cloptima handles routing, policy, budgets, and attribution underneath.

Centralize access with BYOK

Use Cloptima BYOK and encrypted credential controls to keep your Anthropic key protected while developers use governed virtual keys bound to policy.

Set policy boundaries

Control model families, development limits, production budgets, and high-context usage for teams that depend on Anthropic models.

Review spend trends

Use model spend analytics to compare Anthropic cost against other providers, apps, and agent workflows in one view.