Executable connectorAIJul 22, 20260 calls

Anthropic Connector

Anthropic API connector for model discovery, token counting, and approval-gated Messages calls.

Credential setup

api_key_header

Create a dedicated API key, set a workspace spend limit, and require approval for model calls.

Setup docs: https://console.anthropic.com/settings/keys

After adding this connector, attach the credential on the server page, then run astrail tools list.

Hosted MCP endpoint

/api/mcp/preset-anthropic

Private servers require an Astrail API key in the Authorization header.

MCP client snippets

Connect

Claude Desktop config

{
  "mcpServers": {
    "anthropic-connector": {
      "url": "/api/mcp/preset-anthropic"
    }
  }
}

cURL initialize

curl -sS -X POST "/api/mcp/preset-anthropic" \
  -H 'Content-Type: application/json' \
  --data '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

cURL tools/list

curl -sS -X POST "/api/mcp/preset-anthropic" \
  -H 'Content-Type: application/json' \
  --data '{"jsonrpc":"2.0","id":2,"method":"tools/list","params":{}}'

cURL tools/call

curl -sS -X POST "/api/mcp/preset-anthropic" \
  -H 'Content-Type: application/json' \
  --data '{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"anthropic_list_models","arguments":{"limit":10,"before_id":1,"after_id":1}}}'

Runtime behavior

Runtime healthhealthy

Endpoint healthnot_checked

Execution modesafe_rest_execution

Deterministic executionSupported

Generated sourceExport only

Endpoint mapAvailable

Endpoint mappedYes

Auth-required endpointsPresent

Browser runtime endpointsNone detected

Last statusnot recorded

Last execution modenot recorded

Last toolnot recorded

Last latencynot recorded

Upstream statusnot recorded

Trace IDnot recorded

Error codenone

Observabilitystructured fallback

Rate limit modestandard

Missing authauth_required / oauth_required

Missing mappingmapping_required

Astrail does not evaluate generated TypeScript inside Next.js. Hosted calls are routed through stored tool metadata and endpoint maps.

Tools

anthropic_list_models

List models available from the Anthropic API.

anthropic_count_tokens

Count input tokens for an Anthropic Messages request.

anthropic_create_message

Create an Anthropic message after approval because this incurs provider usage.

server.ts

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";

const server = new McpServer({ name: "Anthropic Connector", version: "1.0.0" });

// Curated Astrail connector for: anthropic_list_models, anthropic_count_tokens, anthropic_create_message.
// The hosted endpoint executes its verified deterministic endpoint map. Attach a least-privilege provider credential before calling private tools.

server.tool("connector_status", "Confirm this curated connector template is installed.", z.object({}), async () => ({
  content: [{ type: "text", text: "Connector installed. Attach provider credentials to enable hosted API calls." }],
}));

const transport = new StdioServerTransport();
await server.connect(transport);