Awsclaw Lambda

Manage AWS Lambda functions, event source mappings, aliases, versions, and layers.

When to Use This Skill

Use this skill when the user:

• Asks about Lambda functions or serverless
• Wants to invoke a Lambda function
• Needs to update function code
• Wants to inspect function configuration, concurrency, or URLs
• Asks about event source mappings (SQS, SNS, DynamoDB, Kinesis triggers)
• Needs to manage aliases, versions, or layers
• Wants to tag or untag Lambda resources
• Wants to create, update, or delete Lambda functions
• Needs to manage permissions or function URLs

Tool: LambdaTool

Execute AWS Lambda commands including lifecycle management and event source mappings. ALWAYS provide params object.

Commands

ListFunctions

List Lambda functions.

{ "command": "ListFunctions", "params": { "MaxItems": 50 } }

Parameters:

GetFunction

Get function details including code location.

{ "command": "GetFunction", "params": { "FunctionName": "my-function" } }

Parameters:

GetFunctionConfiguration

Get function configuration (runtime, handler, memory, timeout, environment, role, etc.).

{ "command": "GetFunctionConfiguration", "params": { "FunctionName": "my-function" } }

Parameters:

GetFunctionConcurrency

Get reserved concurrency settings.

{ "command": "GetFunctionConcurrency", "params": { "FunctionName": "my-function" } }

Parameters:

GetFunctionCodeSigningConfig

Get code signing configuration.

{ "command": "GetFunctionCodeSigningConfig", "params": { "FunctionName": "my-function" } }

Parameters:

GetFunctionUrlConfig

Get function URL configuration.

{ "command": "GetFunctionUrlConfig", "params": { "FunctionName": "my-function" } }

Parameters:

GetPolicy

Get the resource-based policy attached to a function.

{ "command": "GetPolicy", "params": { "FunctionName": "my-function" } }

Parameters:

GetAccountSettings

Get Lambda account-level settings and limits.

{ "command": "GetAccountSettings", "params": {} }

Parameters: None required.

Invoke

Invoke a Lambda function.

{ "command": "Invoke", "params": { "FunctionName": "my-function", "Payload": "{\"key\":\"value\"}", "InvocationType": "RequestResponse", "LogType": "Tail" } }

Parameters:

UpdateFunctionCode

Update a function's deployment package.

{ "command": "UpdateFunctionCode", "params": { "FunctionName": "my-function", "S3Bucket": "code-bucket", "S3Key": "code.zip", "Publish": true } }

Parameters:

Lifecycle Commands

CreateFunction

Create a new Lambda function.

{ "command": "CreateFunction", "params": { "FunctionName": "my-func", "Runtime": "nodejs18.x", "Role": "arn:aws:iam::123456789012:role/LambdaRole", "Handler": "index.handler", "Code": { "S3Bucket": "code-bucket", "S3Key": "code.zip" } } }

UpdateFunctionConfiguration

Update function configuration.

{ "command": "UpdateFunctionConfiguration", "params": { "FunctionName": "my-func", "MemorySize": 512, "Timeout": 30 } }

DeleteFunction

Delete a function.

{ "command": "DeleteFunction", "params": { "FunctionName": "my-func" } }

CreateEventSourceMapping

Create an event source mapping.

{ "command": "CreateEventSourceMapping", "params": { "FunctionName": "my-func", "EventSourceArn": "arn:aws:sqs:us-east-1:123456789012:queue", "StartingPosition": "LATEST" } }

AddPermission

Add a resource-based permission.

{ "command": "AddPermission", "params": { "FunctionName": "my-func", "StatementId": "sns-invoke", "Action": "lambda:InvokeFunction", "Principal": "sns.amazonaws.com", "SourceArn": "arn:aws:sns:us-east-1:123456789012:topic" } }

CreateFunctionUrlConfig

Create a function URL.

{ "command": "CreateFunctionUrlConfig", "params": { "FunctionName": "my-func", "AuthType": "NONE" } }

PutFunctionConcurrency

Set reserved concurrency.

{ "command": "PutFunctionConcurrency", "params": { "FunctionName": "my-func", "ReservedConcurrentExecutions": 10 } }

PublishVersion

Publish a new version.

{ "command": "PublishVersion", "params": { "FunctionName": "my-func" } }

CreateAlias

Create an alias for a version.

{ "command": "CreateAlias", "params": { "FunctionName": "my-func", "Name": "prod", "FunctionVersion": "1" } }

UpdateAlias

Update an alias.

{ "command": "UpdateAlias", "params": { "FunctionName": "my-func", "Name": "prod", "FunctionVersion": "2" } }

DeleteAlias

Delete an alias.

{ "command": "DeleteAlias", "params": { "FunctionName": "my-func", "Name": "prod" } }

PublishLayerVersion

Publish a new layer version.

{ "command": "PublishLayerVersion", "params": { "LayerName": "my-layer", "Content": { "S3Bucket": "code-bucket", "S3Key": "layer.zip" } } }

ListAliases

List aliases for a function.

{ "command": "ListAliases", "params": { "FunctionName": "my-function" } }

Parameters:

GetAlias

Get details of a specific alias.

{ "command": "GetAlias", "params": { "FunctionName": "my-function", "Name": "prod" } }

Parameters:

ListVersionsByFunction

List published versions of a function.

{ "command": "ListVersionsByFunction", "params": { "FunctionName": "my-function" } }

Parameters:

ListEventSourceMappings

List event source mappings for a function.

{ "command": "ListEventSourceMappings", "params": { "FunctionName": "my-function" } }

Parameters:

GetEventSourceMapping

Get details of an event source mapping.

{ "command": "GetEventSourceMapping", "params": { "UUID": "12345678-1234-1234-1234-123456789012" } }

Parameters:

ListLayerVersions

List versions for a Lambda layer.

{ "command": "ListLayerVersions", "params": { "LayerName": "my-layer" } }

Parameters:

ListFunctionsByCodeSigningConfig

List functions using a code signing configuration.

{ "command": "ListFunctionsByCodeSigningConfig", "params": { "CodeSigningConfigArn": "arn:..." } }

Parameters:

ListTags

List tags for a Lambda resource.

{ "command": "ListTags", "params": { "Resource": "arn:aws:lambda:us-east-1:123456789012:function:my-function" } }

Parameters:

TagResource

Add tags to a Lambda resource.

{ "command": "TagResource", "params": { "Resource": "arn:aws:lambda:...", "Tags": { "env": "prod" } } }

Parameters:

UntagResource

Remove tags from a Lambda resource.

{ "command": "UntagResource", "params": { "Resource": "arn:aws:lambda:...", "TagKeys": ["env"] } }

Parameters:

Related Services

• Lambda → CloudWatch Logs: Every Lambda function writes logs to /aws/lambda/{functionName}. Use CloudWatchLogTool with DescribeLogGroups prefix /aws/lambda/ to find them
• Lambda → SQS/SNS/DynamoDB/Kinesis: Use ListEventSourceMappings to discover trigger sources. Then use SQSTool, SNSTool, DynamoDBTool to inspect those sources
• Lambda → API Gateway: API Gateway integrations invoke Lambda. Use APIGatewayTool GetIntegration to find Lambda targets
• Lambda → IAM: Use GetFunctionConfiguration to find the execution role ARN, then IAMTool GetRole and ListAttachedRolePolicies to inspect permissions
• Lambda → S3: Functions often read/write S3. Use S3Tool to inspect referenced buckets
• Lambda → Step Functions: Lambda is commonly used as Step Functions task states
• Lambda → CloudFormation: Serverless functions managed by CloudFormation/SAM — use CloudFormationTool DescribeStackResources