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列出 AgentCore 网关中的可用资源
要列出 AgentCore 网关提供的所有可用资源,请向网关的 MCP 端点发出 POST 请求,并在请求正文中指定resources/list为方法:
例
- 2025-11-25 and earlier
-
POST /mcp HTTP/1.1
Host: ${GatewayEndpoint}
Accept: application/json, text/event-stream
Content-Type: application/json
Authorization: ${Authorization header}
MCP-Protocol-Version: ${McpProtocolVersion}
${RequestBody}
- 2026-07-28
-
在版本上2026-07-28,每个请求都带有MCP-Protocol-Version标头、Mcp-Method请求元数据标头和正_meta文中的版本字段。
POST /mcp HTTP/1.1
Host: ${GatewayEndpoint}
Accept: application/json, text/event-stream
Content-Type: application/json
Authorization: ${Authorization header}
MCP-Protocol-Version: 2026-07-28
Mcp-Method: resources/list
${RequestBody}
网关仅接受其protocolConfiguration.mcp配置supportedVersions字段中列出的 MCP 协议版本。要使用版本2026-07-28,请确保您的网关supportedVersions包含该版本。您可以使用 UpdateGateway API 更改支持的版本。
替换以下值:
响应返回可用资源的列表,包括其 URI、名称、描述和 MIME 类型。
与工具和提示不同,返回的资源 URI 不带目标名称前缀。来自 MCP 服务器的原始 URI 按原样返回。
当多个目标暴露相同的资源 URI 时,网关会从目标返回resourcePriority值最低的资源。
资源 URI 由下游 MCP 服务器目标提供,未经网关验证或清理。恶意或受感染的 MCP 服务器可能会返回指向内部端点 (SSRF) 或本地文件系统路径(例如)的 URI。file:///etc/passwd在关注资源 URI 之前对其进行验证和清理,不要自动从不可信的 MCP 服务器目标获取或呈现 URI。
列出资源的代码示例
要查看在网关中列出可用资源的示例,请选择以下方法之一:
例
- Python requests package (2025-11-25 and earlier)
-
将标MCP-Protocol-Version头设置为您的网关支持的版本。
import requests
import json
def list_resources(gateway_url, access_token):
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {access_token}",
"MCP-Protocol-Version": "2025-11-25"
}
payload = {
"jsonrpc": "2.0",
"id": "list-resources-request",
"method": "resources/list"
}
response = requests.post(gateway_url, headers=headers, json=payload)
return response.json()
# Example usage
gateway_url = "https://${GatewayEndpoint}/mcp" # Replace with your actual gateway endpoint
access_token = "${AccessToken}" # Replace with your actual access token
resources = list_resources(gateway_url, access_token)
print(json.dumps(resources, indent=2))
- Python requests package (2026-07-28)
-
在版本上2026-07-28,添加MCP-Protocol-Version和Mcp-Method标头,并在请求正文中包含_meta版本字段。您的网关supportedVersions必须包括2026-07-28。
import requests
import json
def list_resources(gateway_url, access_token):
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {access_token}",
"MCP-Protocol-Version": "2026-07-28",
"Mcp-Method": "resources/list"
}
payload = {
"jsonrpc": "2.0",
"id": "list-resources-request",
"method": "resources/list",
"params": {
"_meta": {
"io.modelcontextprotocol/protocolVersion": "2026-07-28",
"io.modelcontextprotocol/clientInfo": {"name": "my-agent", "version": "1.0.0"},
"io.modelcontextprotocol/clientCapabilities": {}
}
}
}
response = requests.post(gateway_url, headers=headers, json=payload)
return response.json()
# Example usage
gateway_url = "https://${GatewayEndpoint}/mcp" # Replace with your actual gateway endpoint
access_token = "${AccessToken}" # Replace with your actual access token
resources = list_resources(gateway_url, access_token)
print(json.dumps(resources, indent=2))
- MCP Client
-
import asyncio
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
async def execute_mcp(
url,
token,
headers=None
):
default_headers = {
"Authorization": f"Bearer {token}"
}
headers = {**default_headers, **(headers or {})}
async with streamablehttp_client(
url=url,
headers=headers,
) as (
read_stream,
write_stream,
callA,
):
async with ClientSession(read_stream, write_stream) as session:
# 1. Perform initialization handshake
print("Initializing MCP...")
_init_response = await session.initialize()
print(f"MCP Server Initialize successful! - {_init_response}")
# 2. List available resources
print("Listing resources...")
cursor = True
resources = []
while cursor:
next_cursor = cursor
if isinstance(cursor, bool):
next_cursor = None
list_resources_response = await session.list_resources(next_cursor)
resources.extend(list_resources_response.resources)
cursor = list_resources_response.nextCursor
if resources:
for resource in resources:
print(f"{resource.uri} - {resource.name} ({resource.mimeType})")
print(f"Total resources: {len(resources)}")
async def main():
url = "https://${GatewayEndpoint}/mcp"
token = "your_bearer_token_here"
# Optional additional headers
additional_headers = {
"Content-Type": "application/json",
}
await execute_mcp(
url=url,
token=token,
headers=additional_headers
)
# Run the async function
if __name__ == "__main__":
asyncio.run(main())
- Strands MCP Client
-
# NOTE: Strands SDK resource support may vary. Use the MCP Client approach
# above for the most reliable resources/list implementation.
from strands.tools.mcp.mcp_client import MCPClient
from mcp.client.streamable_http import streamablehttp_client
def create_streamable_http_transport(mcp_url: str, access_token: str):
return streamablehttp_client(mcp_url, headers={"Authorization": f"Bearer {access_token}"})
def run_agent(mcp_url: str, access_token: str):
mcp_client = MCPClient(lambda: create_streamable_http_transport(mcp_url, access_token))
with mcp_client:
result = mcp_client.list_resources_sync()
print(f"Found the following resources: {[r.uri for r in result.resources]}")
run_agent(<MCP URL>, <Access token>)
- LangGraph MCP Client
-
# NOTE: LangGraph MCP adapter resource support may vary. Use the MCP Client
# approach above for the most reliable resources/list implementation.
import asyncio
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
async def list_resources(url, token):
headers = {"Authorization": f"Bearer {token}"}
async with streamablehttp_client(url=url, headers=headers) as (
read_stream, write_stream, callA
):
async with ClientSession(read_stream, write_stream) as session:
await session.initialize()
response = await session.list_resources()
for resource in response.resources:
print(f"{resource.uri} - {resource.name}")
asyncio.run(list_resources("https://${GatewayEndpoint}/mcp", "${AccessToken}"))