List Code Actions
list-code-actions · Query · CodeAction · Code Actions
Lists bounded Roslyn code fixes and refactorings for a document, selection or caret.
Availability: Built in and published in every operational mode.
Generated from Roslyn Workbench MCP 1.0.1 (1.0.1).
Behaviour annotations
| Annotation | Value |
|---|---|
destructiveHint |
false |
idempotentHint |
false |
openWorldHint |
false |
readOnlyHint |
true |
title |
"List Code Actions" |
Request
| Property | Type | Required | Description |
|---|---|---|---|
document |
object |
Yes | Target document. |
range |
object | null |
No | The optional selection or caret range. An omitted range selects the complete document. |
expectedSnapshot |
object |
Yes | Echo the snapshot returned with the data or transaction state used to construct this request. |
kinds |
string enum ("CodeFixes", "Refactorings", "All") |
Yes | The kinds of actions to discover. |
diagnosticIds |
array | null |
No | The optional diagnostic identifier filter for code fixes. |
includeProvenance |
boolean |
No | Whether returned actions should reference a response-level runtime provider catalogue. |
limit |
integer | null |
No | The maximum number of action leaves to return. |
workspace |
object | null |
No | Provide workspaceId, alias, path, or any combination. |
Response
Success response
| Property | Type | Required | Description |
|---|---|---|---|
ok |
boolean constant (true) |
Yes | Whether the tool invocation succeeded. |
data |
object | null |
Yes | Tool-specific result payload. |
snapshot |
object |
Yes | Exact immutable workspace snapshot associated with the result, when available. |
warnings |
array |
No | Non-fatal warnings the agent should consider. |
Error response
| Property | Type | Required | Description |
|---|---|---|---|
ok |
boolean constant (false) |
Yes | Whether the tool invocation succeeded. |
error |
object |
Yes | Structured error details when the invocation failed. |
continuation |
oneOf |
No | Action the agent should take before retrying or continuing. |
diagnostics |
array |
No | Diagnostics that explain the failed invocation. |
warnings |
array |
No | Non-fatal warnings the agent should consider. |
Error response
| Property | Type | Required | Description |
|---|---|---|---|
ok |
boolean constant (false) |
Yes | Whether the tool invocation succeeded. |
error |
object |
Yes | Structured error details when the invocation failed. |
diagnostics |
object |
Yes | Diagnostics that explain the failed invocation. |
reporting |
object |
No | Error-reporting workflow available for an unhandled failure. |
Bounded collections and continuation
These response locations publish returned items with explicit bounds and continuation state:
$/oneOf/0/properties/data/properties/actions$/oneOf/0/properties/data/properties/actions/properties/items/items/properties/diagnostics
Continuations and required actions
A response may include a structured continuation at the following schema location. Follow its tool call or user-action instruction instead of guessing how to continue:
$/oneOf/1/properties/continuation
Examples
Discover Code Actions
Workflow: Discover and stage a Code Action, step 2.
Operational modes: inspection-only, transactional, autonomous-trusted.
List bounded fixes and refactorings against an exact document snapshot.
Expected outcome: At most 20 snapshot-bound Code Action references are returned for the selected document.
{
"document": {
"path": "src/Sample.cs"
},
"expectedSnapshot": {
"workspaceId": "11111111-1111-1111-1111-111111111111",
"workspaceEpoch": 1,
"snapshotId": "22222222-2222-2222-2222-222222222222",
"transactionRevision": 0
},
"kinds": "All",
"limit": 20,
"workspace": {
"alias": "sample"
}
}
Complete input schema
{
"type": "object",
"properties": {
"document": {
"description": "Target document.",
"type": "object",
"properties": {
"project": {
"description": "Disambiguates documents with matching paths or IDs.",
"type": [
"object",
"null"
],
"properties": {
"projectId": {
"type": "string"
},
"name": {
"type": "string"
},
"path": {
"description": "Workspace-relative path.",
"type": "string"
},
"targetFramework": {
"type": "string"
}
}
},
"path": {
"description": "Workspace-relative path.",
"type": "string"
},
"documentId": {
"description": "Workspace-local document ID.",
"type": "string"
}
}
},
"range": {
"description": "The optional selection or caret range. An omitted range selects the complete document.",
"type": [
"object",
"null"
],
"properties": {
"start": {
"description": "Zero-based UTF-16 offset.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
},
"length": {
"description": "UTF-16 code-unit length.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
}
}
},
"expectedSnapshot": {
"type": "object",
"properties": {
"workspaceId": {
"type": "string",
"format": "uuid"
},
"workspaceEpoch": {
"type": "integer"
},
"snapshotId": {
"type": "string",
"format": "uuid"
},
"transactionRevision": {
"type": [
"integer",
"null"
]
}
},
"required": [
"workspaceId",
"workspaceEpoch",
"snapshotId",
"transactionRevision"
],
"description": "Echo the snapshot returned with the data or transaction state used to construct this request."
},
"kinds": {
"description": "The kinds of actions to discover.",
"type": "string",
"enum": [
"CodeFixes",
"Refactorings",
"All"
]
},
"diagnosticIds": {
"description": "The optional diagnostic identifier filter for code fixes.",
"type": [
"array",
"null"
],
"items": {
"type": [
"string",
"null"
]
}
},
"includeProvenance": {
"description": "Whether returned actions should reference a response-level runtime provider catalogue.",
"type": "boolean",
"default": false
},
"limit": {
"description": "The maximum number of action leaves to return.",
"type": [
"integer",
"null"
],
"minimum": 0,
"maximum": 2147483647,
"default": 50
},
"workspace": {
"description": "Provide workspaceId, alias, path, or any combination.",
"type": [
"object",
"null"
],
"properties": {
"workspaceId": {
"type": "string",
"format": "uuid"
},
"alias": {
"type": "string"
},
"path": {
"description": "Absolute workspace path.",
"type": "string"
}
}
}
},
"required": [
"document",
"expectedSnapshot",
"kinds"
]
}
Complete output schema
{
"type": "object",
"oneOf": [
{
"type": "object",
"required": [
"ok",
"data",
"snapshot"
],
"properties": {
"ok": {
"const": true,
"description": "Whether the tool invocation succeeded."
},
"data": {
"type": [
"object",
"null"
],
"properties": {
"actions": {
"description": "The returned actions.",
"type": "object",
"properties": {
"items": {
"description": "Items returned in this page.",
"type": [
"array",
"null"
],
"items": {
"type": "object",
"properties": {
"actionId": {
"description": "The opaque action reference.",
"type": "string",
"format": "uuid"
},
"title": {
"description": "The display title.",
"type": "string"
},
"kind": {
"description": "The action kind.",
"type": "string",
"enum": [
"CodeFix",
"Refactoring"
]
},
"location": {
"description": "The precise source location to which the action applies.",
"type": "object",
"properties": {
"document": {
"description": "The project-aware source document identity.",
"type": "object",
"properties": {
"documentId": {
"description": "The document identifier.",
"type": "string"
},
"path": {
"description": "The normalized document path.",
"type": "string"
},
"projectId": {
"description": "The owning project identifier.",
"type": "string"
}
},
"required": [
"documentId",
"path",
"projectId"
]
},
"span": {
"description": "The zero-based UTF-16 source span.",
"type": "object",
"properties": {
"start": {
"description": "Zero-based UTF-16 offset.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
},
"length": {
"description": "UTF-16 code-unit length.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
}
}
},
"line": {
"description": "The zero-based source line.",
"type": "integer"
},
"column": {
"description": "The zero-based source column.",
"type": "integer"
}
},
"required": [
"document",
"span"
]
},
"diagnostics": {
"description": "Concise diagnostic context for a code fix.",
"type": [
"object",
"null"
],
"properties": {
"items": {
"description": "Items returned in this page.",
"type": [
"array",
"null"
],
"items": {
"type": "object",
"properties": {
"id": {
"description": "The diagnostic identifier.",
"type": "string"
},
"message": {
"description": "The diagnostic message.",
"type": "string"
}
},
"required": [
"id",
"message"
]
}
},
"hasMore": {
"description": "Whether additional items were available beyond this page.",
"type": "boolean"
},
"totalCount": {
"description": "Complete result count, when available without additional expensive work.",
"type": [
"integer",
"null"
]
}
}
},
"fixAllScopes": {
"description": "The supported Fix All scopes for a code fix.",
"type": [
"array",
"null"
],
"items": {
"type": "string",
"enum": [
"Document",
"Project",
"Solution"
]
}
},
"providerId": {
"description": "Response-local provider reference when includeProvenance was requested.",
"type": [
"string",
"null"
]
}
},
"required": [
"actionId",
"title",
"kind",
"location"
]
}
},
"hasMore": {
"description": "Whether additional items were available beyond this page.",
"type": "boolean"
},
"totalCount": {
"description": "Complete result count, when available without additional expensive work.",
"type": [
"integer",
"null"
]
}
}
},
"providers": {
"description": "Provider identities keyed by response-local references used by the returned actions.",
"type": [
"object",
"null"
],
"additionalProperties": {
"type": "object",
"properties": {
"typeName": {
"description": "Fully qualified runtime type of the provider that supplied the mutation.",
"type": "string"
},
"assemblyName": {
"description": "Simple name of the assembly containing the provider.",
"type": "string"
},
"assemblyVersion": {
"description": "Version of the assembly containing the provider.",
"type": "string"
}
},
"required": [
"typeName",
"assemblyName",
"assemblyVersion"
]
}
}
},
"description": "Tool-specific result payload."
},
"snapshot": {
"type": "object",
"properties": {
"workspaceId": {
"type": "string",
"format": "uuid"
},
"workspaceEpoch": {
"type": "integer"
},
"snapshotId": {
"type": "string",
"format": "uuid"
},
"transactionRevision": {
"type": [
"integer",
"null"
]
}
},
"required": [
"workspaceId",
"workspaceEpoch",
"snapshotId",
"transactionRevision"
],
"description": "Exact immutable workspace snapshot associated with the result, when available."
},
"warnings": {
"type": "array",
"description": "Non-fatal warnings the agent should consider.",
"items": {
"$ref": "#/$defs/warningInfo"
}
}
}
},
{
"type": "object",
"required": [
"ok",
"error"
],
"properties": {
"ok": {
"const": false,
"description": "Whether the tool invocation succeeded."
},
"error": {
"type": "object",
"properties": {
"code": {
"description": "Stable machine-readable error code.",
"type": "string"
},
"message": {
"description": "Human-readable explanation of the failure.",
"type": "string"
},
"correlationId": {
"description": "Correlation identifier for matching the failure to server-side diagnostics, when available.",
"type": [
"string",
"null"
]
}
},
"required": [
"code",
"message"
],
"description": "Structured error details when the invocation failed."
},
"continuation": {
"oneOf": [
{
"type": "object",
"additionalProperties": false,
"required": [
"kind",
"tool",
"instruction"
],
"properties": {
"kind": {
"const": "CallTool",
"description": "Action required before the original request can continue."
},
"instruction": {
"type": "string",
"description": "Agent-facing instruction explaining how to continue.",
"minLength": 1
},
"tool": {
"type": "string",
"description": "Tool to call before continuing the original request.",
"minLength": 1
}
}
},
{
"type": "object",
"additionalProperties": false,
"required": [
"kind",
"tools",
"instruction"
],
"properties": {
"kind": {
"const": "ChooseTool",
"description": "Action required before the original request can continue."
},
"instruction": {
"type": "string",
"description": "Agent-facing instruction explaining how to continue.",
"minLength": 1
},
"tools": {
"type": "array",
"description": "Allowed tool choices from which the agent must select one.",
"minItems": 1,
"uniqueItems": true,
"items": {
"type": "string",
"description": "Name of a tool the agent may choose.",
"minLength": 1
}
}
}
},
{
"type": "object",
"additionalProperties": false,
"required": [
"kind",
"instruction"
],
"properties": {
"kind": {
"const": "RetryRequest",
"description": "Action required before the original request can continue."
},
"instruction": {
"type": "string",
"description": "Agent-facing instruction explaining how to continue.",
"minLength": 1
}
}
},
{
"type": "object",
"additionalProperties": false,
"required": [
"kind",
"instruction"
],
"properties": {
"kind": {
"const": "ReviseRequest",
"description": "Action required before the original request can continue."
},
"instruction": {
"type": "string",
"description": "Agent-facing instruction explaining how to continue.",
"minLength": 1
}
}
},
{
"type": "object",
"additionalProperties": false,
"required": [
"kind",
"instruction"
],
"properties": {
"kind": {
"const": "ResolveExternally",
"description": "Action required before the original request can continue."
},
"instruction": {
"type": "string",
"description": "Agent-facing instruction explaining how to continue.",
"minLength": 1
}
}
}
],
"description": "Action the agent should take before retrying or continuing."
},
"diagnostics": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"description": "The diagnostic identifier.",
"type": "string"
},
"severity": {
"description": "The diagnostic severity.",
"type": "string",
"enum": [
"Hidden",
"Info",
"Warning",
"Error"
]
},
"message": {
"description": "The diagnostic message.",
"type": "string"
},
"location": {
"description": "The optional source location of the diagnostic.",
"type": [
"object",
"null"
],
"properties": {
"document": {
"description": "The resolved document.",
"type": [
"object",
"null"
],
"properties": {
"documentId": {
"description": "The document identifier.",
"type": "string"
},
"path": {
"description": "The normalized document path.",
"type": "string"
},
"projectId": {
"description": "The owning project identifier.",
"type": "string"
}
},
"required": [
"documentId",
"path",
"projectId"
]
},
"span": {
"description": "The resolved text span.",
"type": [
"object",
"null"
],
"properties": {
"start": {
"description": "Zero-based UTF-16 offset.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
},
"length": {
"description": "UTF-16 code-unit length.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
}
}
},
"line": {
"description": "The one-based line number.",
"type": "integer"
},
"column": {
"description": "The one-based column number.",
"type": "integer"
},
"snapshot": {
"description": "The exact immutable workspace snapshot associated with this location.",
"type": "object",
"properties": {
"workspaceId": {
"type": "string",
"format": "uuid"
},
"workspaceEpoch": {
"type": "integer"
},
"snapshotId": {
"type": "string",
"format": "uuid"
},
"transactionRevision": {
"type": [
"integer",
"null"
]
}
},
"required": [
"workspaceId",
"workspaceEpoch",
"snapshotId",
"transactionRevision"
]
},
"selector": {
"description": "The canonical selector that can resolve this source location again.",
"type": [
"object",
"null"
],
"properties": {
"span": {
"type": "object",
"properties": {
"document": {
"description": "Provide exactly one of path or documentId.",
"type": "object",
"properties": {
"project": {
"description": "Disambiguates documents with matching paths or IDs.",
"type": [
"object",
"null"
],
"properties": {
"projectId": {
"type": [
"string",
"null"
]
},
"name": {
"type": [
"string",
"null"
]
},
"path": {
"description": "Workspace-relative path.",
"type": [
"string",
"null"
]
},
"targetFramework": {
"type": [
"string",
"null"
]
}
}
},
"path": {
"description": "Workspace-relative path.",
"type": [
"string",
"null"
]
},
"documentId": {
"description": "Workspace-local document ID.",
"type": [
"string",
"null"
]
}
}
},
"range": {
"description": "Zero-based UTF-16 range.",
"type": "object",
"properties": {
"start": {
"description": "Zero-based UTF-16 offset.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
},
"length": {
"description": "UTF-16 code-unit length.",
"type": "integer",
"minimum": 0,
"maximum": 2147483647
}
}
}
},
"required": [
"document",
"range"
]
}
},
"required": [
"span"
]
}
},
"required": [
"snapshot"
]
}
},
"required": [
"id",
"message"
]
},
"description": "Diagnostics that explain the failed invocation."
},
"warnings": {
"type": "array",
"description": "Non-fatal warnings the agent should consider.",
"items": {
"$ref": "#/$defs/warningInfo"
}
}
}
},
{
"type": "object",
"required": [
"ok",
"error",
"diagnostics"
],
"properties": {
"ok": {
"const": false,
"description": "Whether the tool invocation succeeded."
},
"error": {
"type": "object",
"required": [
"code",
"message",
"correlationId"
],
"properties": {
"code": {
"const": "UnhandledException"
},
"message": {
"const": "Tool execution failed."
},
"correlationId": {
"type": "string",
"format": "uuid"
}
},
"description": "Structured error details when the invocation failed."
},
"diagnostics": {
"type": "object",
"required": [
"detailsAvailable",
"detailsTool"
],
"properties": {
"detailsAvailable": {
"const": true
},
"detailsTool": {
"const": "get-error-details"
}
},
"description": "Diagnostics that explain the failed invocation."
},
"reporting": {
"type": "object",
"properties": {
"state": {
"type": "string",
"enum": [
"Available",
"AlwaysApproved",
"DisabledByConfiguration",
"ApprovalUnavailable"
]
},
"canPrepare": {
"type": "boolean"
},
"prepareTool": {
"type": [
"string",
"null"
]
}
},
"required": [
"state"
],
"description": "Error-reporting workflow available for an unhandled failure."
}
}
}
],
"$defs": {
"warningInfo": {
"type": "object",
"properties": {
"code": {
"description": "The stable machine-readable warning code.",
"type": "string"
},
"message": {
"description": "The human-readable warning message.",
"type": "string"
}
},
"required": [
"code",
"message"
]
}
}
}