List available prompts in an AgentCore gateway
To list all available prompts that an AgentCore gateway provides, make a POST request to the gateway’s MCP endpoint and specify prompts/list as the method in the request body:
POST /mcp HTTP/1.1
Host: ${GatewayEndpoint}
Content-Type: application/json
Authorization: ${Authorization header}
${RequestBody}
Replace the following values:
The response returns a list of available prompts with their names, descriptions, and arguments.
Code samples for listing prompts
To see examples of listing available prompts in the gateway, select one of the following methods:
Example
- Python requests package
-
-
import requests
import json
def list_prompts(gateway_url, access_token):
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {access_token}"
}
payload = {
"jsonrpc": "2.0",
"id": "list-prompts-request",
"method": "prompts/list"
}
response = requests.post(gateway_url, headers=headers, json=payload)
return response.json()
# Example usage
gateway_url = "https://${GatewayEndpoint}/mcp" # Replace with your actual gateway endpoint
access_token = "${AccessToken}" # Replace with your actual access token
prompts = list_prompts(gateway_url, access_token)
print(json.dumps(prompts, indent=2))
- MCP Client
-
-
import asyncio
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
async def execute_mcp(
url,
token,
headers=None
):
default_headers = {
"Authorization": f"Bearer {token}"
}
headers = {**default_headers, **(headers or {})}
async with streamablehttp_client(
url=url,
headers=headers,
) as (
read_stream,
write_stream,
callA,
):
async with ClientSession(read_stream, write_stream) as session:
# 1. Perform initialization handshake
print("Initializing MCP...")
_init_response = await session.initialize()
print(f"MCP Server Initialize successful! - {_init_response}")
# 2. List available prompts
print("Listing prompts...")
cursor = True
prompts = []
while cursor:
next_cursor = cursor
if isinstance(cursor, bool):
next_cursor = None
list_prompts_response = await session.list_prompts(next_cursor)
prompts.extend(list_prompts_response.prompts)
cursor = list_prompts_response.nextCursor
prompt_names = []
if prompts:
for prompt in prompts:
prompt_names.append(prompt.name)
prompt_names_string = "\n".join(prompt_names)
print(
f"List MCP prompts. # of prompts - {len(prompts)}\n"
f"List of prompts - \n{prompt_names_string}\n"
)
async def main():
url = "https://${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 prompt support may vary. Use the MCP Client approach above
# for the most reliable prompts/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_prompts_sync()
print(f"Found the following prompts: {[prompt.name for prompt in result.prompts]}")
run_agent(<MCP URL>, <Access token>)
- LangGraph MCP Client
-
-
# NOTE: LangGraph MCP adapter prompt support may vary. Use the MCP Client
# approach above for the most reliable prompts/list implementation.
import asyncio
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
async def list_prompts(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_prompts()
for prompt in response.prompts:
print(f"{prompt.name} - {prompt.description}")
asyncio.run(list_prompts("https://${GatewayEndpoint}/mcp", "${AccessToken}"))
Prompt names are prefixed with the target name using the format {targetName}___{promptName}. This is the same naming convention used for tools. For more information, see Tool naming conventions.
