--- title: "AWS CloudWatch Application Signals MCP Server: review, setup & limitations · Undominated.ai" canonical: https://undominated.ai/mcp-servers/awslabs-cloudwatch-applicationsignals/ description: "Reads CloudWatch Application Signals for an account you administer. It is not the general CloudWatch server." --- # AWS CloudWatch Application Signals MCP Server: review, setup & limitations · Undominated.ai > Reads CloudWatch Application Signals for an account you administer. It is not the general CloudWatch server. [← Explore all mcp servers](/mcp-servers/) CLOUD OPERATIONS / Amazon Web Services # AWS CloudWatch Application Signals MCP Server Reads CloudWatch Application Signals for an account you administer. It is not the general CloudWatch server. [See setup guidance ↓](#setup)[Original source ↗](https://github.com/awslabs/mcp/tree/49de7cc11ae064b9224f07ae050c612c3f92dd55/src/cloudwatch-applicationsignals-mcp-server) SOURCE REVIEW Reviewed 2026-10-14 Evidence 2 linked sources Publisher Amazon Web Services Licence [Apache-2.0 ↗](https://github.com/awslabs/mcp/blob/49de7cc11ae064b9224f07ae050c612c3f92dd55/LICENSE) Revision 49de7cc11ae0 [Read what was—and wasn’t—checked ↓](#review) “An MCP (Model Context Protocol) server that provides comprehensive tools for monitoring and analyzing AWS services using AWS Application Signals.” [Amazon Web Services · upstream description ↗](https://github.com/awslabs/mcp/blob/49de7cc11ae064b9224f07ae050c612c3f92dd55/src/cloudwatch-applicationsignals-mcp-server/README.md) Our analysis follows below. 01 / THE REASONING ## Why this made the selection. - The README is an Application Signals audit and trace assistant for service health, SLOs, and canaries. - Trace search is incomplete unless Transaction Search is enabled, and the enablement tool returns a guide rather than applying the changes itself. ### A good fit for - Auditing Application Signals services, SLOs, or canaries with an AWS profile - Not for full trace history unless X-Ray Transaction Search is already sending traces to CloudWatch Logs ### Weigh up before choosing - @latest is not a pin. - This review confirmed the README contains the package and uvx. It did not call the AWS API. - get_enablement_guide returns a guide for the agent to edit IaC and Dockerfiles. The README does not say the tool itself enables the service. - Without Transaction Search the README says only 5% sampled X-Ray traces are available. - The IAM example is account access through an AWS profile, not an unauthenticated endpoint. - A pin does not verify transitive dependencies. Documented uvx examples use a floating package tag, not the reviewed commit. - This review did not execute the resource. - The server was not started and its tools were not called. 02 / THE REVIEW RECORD ## What we actually inspected. Source review has boundaries. A clear record is more useful than a “safe” badge. ### Material inspected - src/cloudwatch-applicationsignals-mcp-server/README.md - LICENSE ### Our findings - README contains awslabs.cloudwatch-applicationsignals-mcp-server@latest. - README contains a uvx command. - The server monitors and analyzes services through Application Signals, including SLO, trace, canary, and change-event tools. - It authenticates with AWS profiles. The documented policy includes application-signals:ListServices and related read actions. - get_enablement_guide returns a curated guide for the agent to change code. It does not, in this README, apply that enablement itself. Without Transaction Search, trace access is the 5% X-Ray sample. ### Not established by this review - No AWS API call was made. - The server was not started and its tools were not called. - A pin does not verify transitive dependencies. - No tools/list or tool call was made. The review applies to the material and revision named here. A newer upstream release can change its behavior. 03 / PUT IT TO WORK ## Connect a server deliberately. [Upstream setup instructions ↗](https://github.com/awslabs/mcp/blob/49de7cc11ae064b9224f07ae050c612c3f92dd55/src/cloudwatch-applicationsignals-mcp-server/README.md) DOCUMENTED COMMAND uvx awslabs.cloudwatch-applicationsignals-mcp-server@latest Copy command ↗ Copying does not execute this command. It may retrieve a newer version than the reviewed source. - Register the uvx command. - Use credentials for the account you mean. - The one-line command above is the uvx launch in the README client block at this commit, not a separate installer. It was not run. ### Before you start - uv - AWS credentials for the service ### Documented configuration example Use the client and authentication context described in the setup guidance. Configuration formats vary between hosts. { "mcpServers": { "applicationsignals": { "command": "uvx", "args": [ "awslabs.cloudwatch-applicationsignals-mcp-server@latest" ], "env": { "AWS_PROFILE": "[The AWS Profile Name to use for AWS access]", "AWS_REGION": "[AWS Region]", "FASTMCP_LOG_LEVEL": "ERROR" } } } } Copy configuration ↗ ### Compatibility Local stdio MCP clients ### Implementation Python ### Transports stdio ### Local process, AWS credentials - Call the AWS APIs the credential allows for this server ### Cost model Apache-2.0 server. AWS usage may be billed. 04 / FOLLOW THE EVIDENCE ## The source trail. Our notes are separate from the original resource. Check upstream before adopting a new version. - [Server documentation ↗](https://github.com/awslabs/mcp/blob/49de7cc11ae064b9224f07ae050c612c3f92dd55/src/cloudwatch-applicationsignals-mcp-server/README.md) Checked 2026-10-07 https://github.com/awslabs/mcp/blob/49de7cc11ae064b9224f07ae050c612c3f92dd55/src/cloudwatch-applicationsignals-mcp-server/README.md Supports: Package name and uvx launch - [Repository licence ↗](https://github.com/awslabs/mcp/blob/49de7cc11ae064b9224f07ae050c612c3f92dd55/LICENSE) Checked 2026-10-07 https://github.com/awslabs/mcp/blob/49de7cc11ae064b9224f07ae050c612c3f92dd55/LICENSE Supports: Redistribution terms KEEP COMPARING ## Other approaches to consider. Related by category or shared topics. These are alternatives to inspect, not a measured quality order. [### AWS CloudWatch MCP Server ↗ Queries CloudWatch for an account you administer. It does not invent a metric.](/mcp-servers/awslabs-cloudwatch/)[### AWS Billing and Cost Management MCP Server ↗ Reads realised AWS billing and cost-management data, which is a different number from the advertised unit price.](/mcp-servers/awslabs-aws-billing-cost-management/)[### AWS CloudTrail MCP Server ↗ Queries CloudTrail events for an account you administer.](/mcp-servers/awslabs-cloudtrail/) [AI Tools ↗](/tools/)[Skills ↗](/skills/)[Agents ↗](/agents/)[MCP Servers ↗](/mcp-servers/)[Workflows ↗](/workflows/) ## Continue your investigation - [Inspect resource evidence](/tools/) - [Choose a host](/agents/) - [Inspect reusable workflows](/skills/) - [Use Undominated data](/api/)