Add read file tool
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10
go.mod
10
go.mod
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@ -2,11 +2,19 @@ module agent
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go 1.24.2
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require github.com/anthropics/anthropic-sdk-go v1.3.0
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require (
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github.com/anthropics/anthropic-sdk-go v1.3.0
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github.com/invopop/jsonschema v0.13.0
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)
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require (
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github.com/bahlo/generic-list-go v0.2.0 // indirect
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github.com/buger/jsonparser v1.1.1 // indirect
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github.com/mailru/easyjson v0.7.7 // indirect
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github.com/tidwall/gjson v1.14.4 // indirect
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github.com/tidwall/match v1.1.1 // indirect
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github.com/tidwall/pretty v1.2.1 // indirect
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github.com/tidwall/sjson v1.2.5 // indirect
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github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect
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gopkg.in/yaml.v3 v3.0.1 // indirect
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)
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21
go.sum
21
go.sum
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@ -1,5 +1,20 @@
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github.com/anthropics/anthropic-sdk-go v1.3.0 h1:KroW4oDT3KzFT71d3bnu4DxLFAEPvY+d1c6z2CrOz/s=
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github.com/anthropics/anthropic-sdk-go v1.3.0/go.mod h1:AapDW22irxK2PSumZiQXYUFvsdQgkwIWlpESweWZI/c=
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github.com/bahlo/generic-list-go v0.2.0 h1:5sz/EEAK+ls5wF+NeqDpk5+iNdMDXrh3z3nPnH1Wvgk=
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github.com/bahlo/generic-list-go v0.2.0/go.mod h1:2KvAjgMlE5NNynlg/5iLrrCCZ2+5xWbdbCW3pNTGyYg=
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github.com/buger/jsonparser v1.1.1 h1:2PnMjfWD7wBILjqQbt530v576A/cAbQvEW9gGIpYMUs=
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github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0=
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/invopop/jsonschema v0.13.0 h1:KvpoAJWEjR3uD9Kbm2HWJmqsEaHt8lBUpd0qHcIi21E=
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github.com/invopop/jsonschema v0.13.0/go.mod h1:ffZ5Km5SWWRAIN6wbDXItl95euhFz2uON45H2qjYt+0=
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github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
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github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
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github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
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github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
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github.com/tidwall/gjson v1.14.2/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
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github.com/tidwall/gjson v1.14.4 h1:uo0p8EbA09J7RQaflQ1aBRffTR7xedD2bcIVSYxLnkM=
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github.com/tidwall/gjson v1.14.4/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
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@ -10,3 +25,9 @@ github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
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github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
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github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
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github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
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github.com/wk8/go-ordered-map/v2 v2.1.8 h1:5h/BUHu93oj4gIdvHHHGsScSTMijfx5PeYkE/fJgbpc=
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github.com/wk8/go-ordered-map/v2 v2.1.8/go.mod h1:5nJHM5DyteebpVlHnWMV0rPz6Zp7+xBAnxjb1X5vnTw=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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93
main.go
93
main.go
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@ -8,6 +8,7 @@ import (
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"os"
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"github.com/anthropics/anthropic-sdk-go"
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"github.com/invopop/jsonschema"
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)
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func main() {
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@ -20,7 +21,7 @@ func main() {
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}
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return scanner.Text(), true
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}
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tools := []ToolDefinition{}
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tools := []ToolDefinition{ReadFileDefinition}
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agent := NewAgent(&client, getUserMessage, tools)
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err := agent.Run(context.TODO())
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@ -48,15 +49,18 @@ func (a *Agent) Run(ctx context.Context) error {
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fmt.Println("Chat with Claude (use 'ctrl-c' to quit)")
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readUserInput := true
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for {
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fmt.Print("\u001b[94mYou\u001b[0m: ")
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userInput, ok := a.getUserMessage()
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if !ok {
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break
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}
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if readUserInput {
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fmt.Print("\u001b[94mYou\u001b[0m: ")
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userInput, ok := a.getUserMessage()
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if !ok {
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break
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}
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userMessage := anthropic.NewUserMessage(anthropic.NewTextBlock(userInput))
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conversation = append(conversation, userMessage)
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userMessage := anthropic.NewUserMessage(anthropic.NewTextBlock(userInput))
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conversation = append(conversation, userMessage)
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}
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message, err := a.runInference(ctx, conversation)
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if err != nil {
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@ -64,17 +68,49 @@ func (a *Agent) Run(ctx context.Context) error {
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}
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conversation = append(conversation, message.ToParam())
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toolResults := []anthropic.ContentBlockParamUnion{}
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for _, content := range message.Content {
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switch content.Type {
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case "text":
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fmt.Printf("\u001b[93mClaude\u001b[0m: %s\n", content.Text)
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case "tool_use":
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result := a.executeTool(content.ID, content.Name, content.Input)
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toolResults = append(toolResults, result)
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}
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}
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if len(toolResults) == 0 {
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readUserInput = true
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continue
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}
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readUserInput = false
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conversation = append(conversation, anthropic.NewUserMessage(toolResults...))
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}
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return nil
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}
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func (a *Agent) executeTool(id, name string, input json.RawMessage) anthropic.ContentBlockParamUnion {
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var toolDef ToolDefinition
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var found bool
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for _, tool := range a.tools {
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if tool.Name == name {
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toolDef = tool
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found = true
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break
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}
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}
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if !found {
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return anthropic.NewToolResultBlock(id, "tool not found", true)
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}
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fmt.Printf("\u001b[92mtool\u001b[0m: %s(%s)\n", name, input)
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response, err := toolDef.Function(input)
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if err != nil {
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return anthropic.NewToolResultBlock(id, err.Error(), true)
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}
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return anthropic.NewToolResultBlock(id, response, false)
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}
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func (a *Agent) runInference(ctx context.Context, conversation []anthropic.MessageParam) (*anthropic.Message, error) {
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anthropicTools := []anthropic.ToolUnionParam{}
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for _, tool := range a.tools {
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@ -102,3 +138,44 @@ type ToolDefinition struct {
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InputSchema anthropic.ToolInputSchemaParam `json:"input_schema"`
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Function func(input json.RawMessage) (string, error)
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}
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var ReadFileDefinition = ToolDefinition{
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Name: "read_file",
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Description: "Read the contents of a given relative file path. Use this when you want to see what's inside a file. Do not use this with directory names.",
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InputSchema: ReadFileInputSchema,
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Function: ReadFile,
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}
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type ReadFileInput struct {
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Path string `json:"path" jsonschema_description:"The relative path of a file in the working directory."`
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}
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var ReadFileInputSchema = GenerateSchema[ReadFileInput]()
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func ReadFile(input json.RawMessage) (string, error) {
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readFileInput := ReadFileInput{}
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err := json.Unmarshal(input, &readFileInput)
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if err != nil {
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panic(err)
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}
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content, err := os.ReadFile(readFileInput.Path)
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if err != nil {
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return "", err
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}
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return string(content), nil
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}
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func GenerateSchema[T any]() anthropic.ToolInputSchemaParam {
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reflector := jsonschema.Reflector{
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AllowAdditionalProperties: false,
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DoNotReference: true,
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}
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var v T
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schema := reflector.Reflect(v)
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return anthropic.ToolInputSchemaParam{
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Properties: schema.Properties,
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}
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}
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