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Overview

SQS transport uses direct queue-to-queue communication where the server listens on a request queue and sends responses to client-specific response queues.

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Examples

View complete working examples in the GitHub repository:

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Quick Start

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Basic Usage

# Server
from asyncmcp.sqs import sqs_server
from asyncmcp import SqsServerConfig

config = SqsServerConfig(
    read_queue_url="https://sqs.region.amazonaws.com/account/requests"
)

async with sqs_server(config, sqs_client) as (read, write):
    await app.run(read, write, init_options)

# Client
from asyncmcp.sqs import sqs_client
from asyncmcp import SqsClientConfig

config = SqsClientConfig(
    read_queue_url="https://sqs.region.amazonaws.com/account/requests",
    response_queue_url="https://sqs.region.amazonaws.com/account/responses"
)

async with sqs_client(config, sqs_client) as (read, write):
    async with ClientSession(read, write) as session:
        await session.initialize()

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Configuration

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Server Configuration

Class: SqsServerConfig
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read_queue_url
string
required
URL of the SQS queue where the server receives requests.Example: https://sqs.us-east-1.amazonaws.com/123456789/mcp-requests
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max_messages
int
default:"10"
Maximum messages to retrieve per poll (1-10).
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wait_time_seconds
int
default:"20"
Long polling duration (0-20). Use 20 for cost optimization.
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visibility_timeout_seconds
int
default:"30"
Seconds a message remains invisible after retrieval.
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poll_interval_seconds
float
default:"5.0"
Seconds between queue polling attempts. Lower values reduce latency but increase costs.
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message_attributes
dict
Custom attributes to include with messages.
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transport_timeout_seconds
float
Optional overall transport timeout.

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Client Configuration

Class: SqsClientConfig
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read_queue_url
string
required
URL of the server’s request queue.Example: https://sqs.us-east-1.amazonaws.com/123456789/mcp-requests
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response_queue_url
string
required
URL of the client’s response queue. Can be pre-created or dynamically generated.Example: https://sqs.us-east-1.amazonaws.com/123456789/mcp-responses
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client_id
string
Unique client identifier. Auto-generated if not provided.
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message_attributes
dict
Custom attributes to include with messages.
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transport_timeout_seconds
float
Optional overall transport timeout.