- curl (2025-11-25 and earlier)
-
The following curl request shows an example request to read a resource with URI config://app-settings through a gateway with the ID mygateway-abcdefghij. Set the MCP-Protocol-Version header to a version that your gateway supports.
curl -X POST \
https://mygateway-abcdefghij.gateway.bedrock-agentcore.us-west-2.amazonaws.com/mcp \
-H "Accept: application/json, text/event-stream" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
-H "MCP-Protocol-Version: 2025-11-25" \
-d '{
"jsonrpc": "2.0",
"id": "read-resource-request",
"method": "resources/read",
"params": {
"uri": "config://app-settings"
}
}'
- curl (2026-07-28)
-
On version 2026-07-28, include the Mcp-Method and Mcp-Name request-metadata headers and the _meta version fields in the body. For resources/read, Mcp-Name is the resource uri, and the MCP-Protocol-Version header must match _meta.io.modelcontextprotocol/protocolVersion. Your gateway’s supportedVersions must include 2026-07-28.
curl -X POST \
https://mygateway-abcdefghij.gateway.bedrock-agentcore.us-west-2.amazonaws.com/mcp \
-H "Accept: application/json, text/event-stream" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
-H "MCP-Protocol-Version: 2026-07-28" \
-H "Mcp-Method: resources/read" \
-H "Mcp-Name: config://app-settings" \
-d '{
"jsonrpc": "2.0",
"id": "read-resource-request",
"method": "resources/read",
"params": {
"uri": "config://app-settings",
"_meta": {
"io.modelcontextprotocol/protocolVersion": "2026-07-28",
"io.modelcontextprotocol/clientInfo": {
"name": "my-agent",
"version": "1.0.0"
},
"io.modelcontextprotocol/clientCapabilities": {}
}
}
}'
- Python requests package (2025-11-25 and earlier)
-
Set the MCP-Protocol-Version header to a version that your gateway supports.
import requests
import json
def read_resource(gateway_url, access_token, resource_uri):
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {access_token}",
"MCP-Protocol-Version": "2025-11-25"
}
payload = {
"jsonrpc": "2.0",
"id": "read-resource-request",
"method": "resources/read",
"params": {
"uri": resource_uri
}
}
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
result = read_resource(
gateway_url,
access_token,
"config://app-settings" # Replace with the resource URI from resources/list
)
print(json.dumps(result, indent=2))
- Python requests package (2026-07-28)
-
On version 2026-07-28, include the Mcp-Method and Mcp-Name request-metadata headers and the _meta version fields in the body. For resources/read, Mcp-Name is the resource uri, and the MCP-Protocol-Version header must match _meta.io.modelcontextprotocol/protocolVersion. Your gateway’s supportedVersions must include 2026-07-28.
import requests
import json
def read_resource(gateway_url, access_token, resource_uri):
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {access_token}",
"MCP-Protocol-Version": "2026-07-28",
"Mcp-Method": "resources/read",
"Mcp-Name": resource_uri
}
payload = {
"jsonrpc": "2.0",
"id": "read-resource-request",
"method": "resources/read",
"params": {
"uri": resource_uri,
"_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
result = read_resource(
gateway_url,
access_token,
"config://app-settings" # Replace with the resource URI from resources/list
)
print(json.dumps(result, indent=2))
- MCP Client
-
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
from pydantic import AnyUrl
import asyncio
async def execute_mcp(
url,
token,
resource_uri,
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. Read specific resource
print(f"Reading resource: {resource_uri}")
resource_response = await session.read_resource(uri=AnyUrl(resource_uri))
for content in resource_response.contents:
print(f"URI: {content.uri}, MIME: {content.mimeType}")
if hasattr(content, 'text') and content.text:
print(f"Text: {content.text}")
elif hasattr(content, 'blob') and content.blob:
print(f"Blob (base64): {content.blob[:100]}...")
return resource_response
async def main():
url = "https://${GatewayEndpoint}/mcp"
token = "your_bearer_token_here"
resource_uri = "config://app-settings"
await execute_mcp(
url=url,
token=token,
resource_uri=resource_uri
)
if __name__ == "__main__":
asyncio.run(main())
- Strands MCP Client
-
NOTE: Strands SDK resource support might vary. Use the MCP Client approach shown previously for the most reliable resources/read implementation.
from strands.tools.mcp.mcp_client import MCPClient
from mcp.client.streamable_http import streamablehttp_client
def create_streamable_http_transport(mcp_url: str, access_token: str):
return streamablehttp_client(mcp_url, headers={"Authorization": f"Bearer {access_token}"})
def run_agent(mcp_url: str, access_token: str):
mcp_client = MCPClient(lambda: create_streamable_http_transport(mcp_url, access_token))
with mcp_client:
result = mcp_client.read_resource_sync(uri="config://app-settings")
print(result)
run_agent(<MCP URL>, <Access token>)
- LangGraph MCP Client
-
NOTE: LangGraph MCP adapter resource support might vary. Use the MCP Client approach shown previously for the most reliable resources/read implementation.
import asyncio
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
from pydantic import AnyUrl
async def read_resource(url, token, resource_uri):
headers = {"Authorization": f"Bearer {token}"}
async with streamablehttp_client(url=url, headers=headers) as (
read_stream, write_stream, callA
):
async with ClientSession(read_stream, write_stream) as session:
await session.initialize()
response = await session.read_resource(uri=AnyUrl(resource_uri))
for content in response.contents:
if hasattr(content, 'text') and content.text:
print(f"{content.uri}: {content.text}")
elif hasattr(content, 'blob') and content.blob:
print(f"{content.uri}: <blob, {len(content.blob)} chars base64>")
asyncio.run(read_resource(
"https://${GatewayEndpoint}/mcp",
"${AccessToken}",
"config://app-settings"
))
