integration · anthropic

Claude + Anthropic — execute Claude tools natively.

Expose Anthropic's developer APIs—including messages, prompt caching controls, and token analysis tools—directly to Cursor, Claude Desktop, or LangChain agents via the open MCP standard. wmcp.sh is an independent integration; not affiliated with Anthropic.

Last updated 2026-05-28 · works with Claude, OpenAI, LangChain, and any MCP client

Positioning

vs. the alternatives

Capability	Raw Anthropic SDK	Composio Anthropic	wmcp.sh
Setup time	Install SDK + key configurations	Platform auth configurations	Sign in & provide key — done
Interoperability	Locked into Anthropic client	Custom wrapper	Standard MCP — works with Claude/Cursor
Spec updates	Wait for SDK release	Wait for platform update	Instant spec resolution at the edge
Latency	80-200ms SDK bootstrap	Platform router delays	Sub-50ms Edge proxy resolution
Tool Coverage	Manual method mapping	Curated subset	Every public endpoint out-of-the-box

What you get

Tools your agent calls

All MCP-shaped — consumed directly by Claude tool_use, OpenAI function-calling, or LangChain.

Tool	Type	Returns
`messages/create`	Live action	Claude 3.5 Sonnet / Haiku response stream
`complete/create`	Live action	Legacy text completion response

Integrate

Python — Claude calling Anthropic messages through wmcp.sh

from wmcp import WmcpClient
from wmcp.anthropic import to_anthropic_tools, execute_tool_use
from anthropic import Anthropic

client = WmcpClient(api_key="webmcp_live_…")
spec   = "https://raw.githubusercontent.com/anthropics/anthropic-sdk-python/main/openapi.yaml"
tools  = client.tools(spec)

anthropic = Anthropic()
msg = anthropic.messages.create(
    model="claude-3-5-sonnet-20241022",
    max_tokens=1024,
    tools=to_anthropic_tools(tools),
    messages=[{"role": "user",
               "content": "Analyze the text metadata using Anthropic's tools."}],
)

for block in msg.content:
    if block.type == "tool_use":
        result = execute_tool_use(client, spec, block.model_dump())
        print(result)

FAQ

Frequently asked

Do I need a paid Anthropic key?

Yes. You provide your own Anthropic API key in your secure client header or vault. wmcp.sh does not provide API credits.

How does this differ from the official Anthropic SDK?

The SDK requires locking your codebase into Anthropic's client library. wmcp.sh maps the Anthropic OpenAPI spec to the universal MCP standard, letting Claude Desktop, Claude Code, and other editors run Anthropic actions natively.

Are my API keys secure?

Yes. wmcp.sh routes all requests through our secure PKCE credentials proxy. Your keys are encrypted out-of-band and never exposed in the LLM context.

API agent-readiness

Anthropic's Messages API is the canonical agentic-loop endpoint. If you're shipping your own API for agents to call, see the API-side checklist.

→ /agent-ready/api · cornerstone · done-for-you ($499+)

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