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Added get gist tool#1105

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Merged
tommaso-moro merged 4 commits intogithub:mainfromVidit-Ostwal:Get-Gist-Tool
Oct 30, 2025
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3 changes: 3 additions & 0 deletionsREADME.md
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Original file line numberDiff line numberDiff line change
Expand Up@@ -611,6 +611,9 @@ The following sets of tools are available:
-`filename`: Filename for simple single-file gist creation (string, required)
-`public`: Whether the gist is public (boolean, optional)

-**get_gist** - Get Gist Content
-`gist_id`: The ID of the gist (string, required)

-**list_gists** - List Gists
-`page`: Page number for pagination (min 1) (number, optional)
-`perPage`: Results per page for pagination (min 1, max 100) (number, optional)
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47 changes: 47 additions & 0 deletionspkg/github/gists.go
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Expand Up@@ -89,6 +89,53 @@ func ListGists(getClient GetClientFn, t translations.TranslationHelperFunc) (too
}
}

// GetGist creates a tool to get the content of a gist
func GetGist(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
return mcp.NewTool("get_gist",
mcp.WithDescription(t("TOOL_GET_GIST_DESCRIPTION", "Get gist content of a particular gist, by gist ID")),
mcp.WithToolAnnotation(mcp.ToolAnnotation{
Title: t("TOOL_GET_GIST", "Get Gist Content"),
ReadOnlyHint: ToBoolPtr(true),
}),
mcp.WithString("gist_id",
mcp.Required(),
mcp.Description("The ID of the gist"),
),
),
func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
gistID, err := RequiredParam[string](request, "gist_id")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}

client, err := getClient(ctx)
if err != nil {
return nil, fmt.Errorf("failed to get GitHub client: %w", err)
}

gist, resp, err := client.Gists.Get(ctx, gistID)
if err != nil {
return nil, fmt.Errorf("failed to get gist: %w", err)
}
defer func() { _ = resp.Body.Close() }()

if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
}
return mcp.NewToolResultError(fmt.Sprintf("failed to get gist: %s", string(body))), nil
}

r, err := json.Marshal(gist)
if err != nil {
return nil, fmt.Errorf("failed to marshal response: %w", err)
}

return mcp.NewToolResultText(string(r)), nil
}
}

// CreateGist creates a tool to create a new gist
func CreateGist(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
return mcp.NewTool("create_gist",
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109 changes: 109 additions & 0 deletionspkg/github/gists_test.go
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Expand Up@@ -192,6 +192,115 @@ func Test_ListGists(t *testing.T) {
}
}

func Test_GetGist(t *testing.T) {
// Verify tool definition
mockClient := github.NewClient(nil)
tool, _ := GetGist(stubGetClientFn(mockClient), translations.NullTranslationHelper)

assert.Equal(t, "get_gist", tool.Name)
assert.NotEmpty(t, tool.Description)
assert.Contains(t, tool.InputSchema.Properties, "gist_id")

assert.Contains(t, tool.InputSchema.Required, "gist_id")

// Setup mock gist for success case
mockGist := github.Gist{
ID: github.Ptr("gist1"),
Description: github.Ptr("First Gist"),
HTMLURL: github.Ptr("https://gist.github.com/user/gist1"),
Public: github.Ptr(true),
CreatedAt: &github.Timestamp{Time: time.Date(2023, 1, 1, 0, 0, 0, 0, time.UTC)},
Owner: &github.User{Login: github.Ptr("user")},
Files: map[github.GistFilename]github.GistFile{
github.GistFilename("file1.txt"): {
Filename: github.Ptr("file1.txt"),
Content: github.Ptr("content of file 1"),
},
},
}

tests := []struct {
name string
mockedClient *http.Client
requestArgs map[string]interface{}
expectError bool
expectedGists github.Gist
expectedErrMsg string
}{
{
name: "Successful fetching different gist",
mockedClient: mock.NewMockedHTTPClient(
mock.WithRequestMatchHandler(
mock.GetGistsByGistId,
mockResponse(t, http.StatusOK, mockGist),
),
),
requestArgs: map[string]interface{}{
"gist_id": "gist1",
},
expectError: false,
expectedGists: mockGist,
},
{
name: "gist_id parameter missing",
mockedClient: mock.NewMockedHTTPClient(
mock.WithRequestMatchHandler(
mock.GetGistsByGistId,
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusUnprocessableEntity)
_, _ = w.Write([]byte(`{"message": "Invalid Request"}`))
}),
),
),
requestArgs: map[string]interface{}{},
expectError: true,
expectedErrMsg: "missing required parameter: gist_id",
},
}

for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
// Setup client with mock
client := github.NewClient(tc.mockedClient)
_, handler := GetGist(stubGetClientFn(client), translations.NullTranslationHelper)

// Create call request
request := createMCPRequest(tc.requestArgs)

// Call handler
result, err := handler(context.Background(), request)

// Verify results
if tc.expectError {
if err != nil {
assert.Contains(t, err.Error(), tc.expectedErrMsg)
} else {
// For errors returned as part of the result, not as an error
assert.NotNil(t, result)
textContent := getTextResult(t, result)
assert.Contains(t, textContent.Text, tc.expectedErrMsg)
}
return
}

require.NoError(t, err)

// Parse the result and get the text content if no error
textContent := getTextResult(t, result)

// Unmarshal and verify the result
var returnedGists github.Gist
err = json.Unmarshal([]byte(textContent.Text), &returnedGists)
require.NoError(t, err)

assert.Equal(t, *tc.expectedGists.ID, *returnedGists.ID)
assert.Equal(t, *tc.expectedGists.Description, *returnedGists.Description)
assert.Equal(t, *tc.expectedGists.HTMLURL, *returnedGists.HTMLURL)
assert.Equal(t, *tc.expectedGists.Public, *returnedGists.Public)
})
}
}

func Test_CreateGist(t *testing.T) {
// Verify tool definition
mockClient := github.NewClient(nil)
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1 change: 1 addition & 0 deletionspkg/github/tools.go
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Expand Up@@ -308,6 +308,7 @@ func DefaultToolsetGroup(readOnly bool, getClient GetClientFn, getGQLClient GetG
gists:=toolsets.NewToolset(ToolsetMetadataGists.ID,ToolsetMetadataGists.Description).
AddReadTools(
toolsets.NewServerTool(ListGists(getClient,t)),
toolsets.NewServerTool(GetGist(getClient,t)),
).
AddWriteTools(
toolsets.NewServerTool(CreateGist(getClient,t)),
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