Anthropic and Documentation

README.md

@@ -151,18 +151,88 @@ ensure the session is maintained across multiple calls.
 
 ### Embedding Generation
 
-TODO
+You can generate embedding vectors using an appropriate model with Ollama or Mistral models:
+
+```go
+import (
+  "github.com/mutablelogic/go-llm"
+)
+
+func embedding(ctx context.Context, agent llm.Agent) error {
+  // Create a new chat session
+  vector, err := agent.Model(ctx, "mistral-embed").Embedding(ctx, "hello")
+  // ...
+}
+```
 
 ### Attachments & Image Caption Generation
 
-TODO
+Some models have `vision` capability and others can also summarize text. For example, to
+generate captions for an image,
+
+```go
+import (
+  "github.com/mutablelogic/go-llm"
+)
+
+func generate_image_caption(ctx context.Context, agent llm.Agent, path string) (string, error) {
+  f, err := os.Open(path)
+  if err != nil {
+    return "", err
+  }
+  defer f.Close()
+
+  // Describe an image
+  r, err := agent.Model("claude-3-5-sonnet-20241022").UserPrompt(
+      ctx, model.UserPrompt("Provide a short caption for this image", llm.WithAttachment(f))
+  )
+  if err != nil {
+    return "", err
+  }
+
+  // Return success
+  return r.Text(0), err
+}
+```
+
+To summarize a text or PDF docment is exactly the same using an Anthropic model, but maybe with a
+different prompt.
 
 ### Streaming
 
-TODO
+Streaming is supported with all providers, but Ollama cannot be used with streaming and tools
+simultaneously. You provide a callback function of signature `func(llm.Completion)` which will
+be called as a completion is received.
+
+```go
+import (
+  "github.com/mutablelogic/go-llm"
+)
+
+func generate_completion(ctx context.Context, agent llm.Agent, prompt string) (string, error) {
+  r, err := agent.Model("claude-3-5-sonnet-20241022").UserPrompt(
+      ctx, model.UserPrompt("What is the weather in London?"),
+      llm.WithStream(stream_callback),
+  )
+  if err != nil {
+    return "", err
+  }
+
+  // Return success
+  return r.Text(0), err
+}
+
+func stream_callback(completion llm.Completion) {
+  // Print out the completion text on each call
+  fmt.Println(completion.Text(0))
+}
+
+```
 
 ### Tool Support
 
+All providers support tools, but not all models.
+
 TODO
 
 ## Options

cmd/llm/main.go

@@ -107,11 +107,9 @@ func main() {
 	if cli.OllamaEndpoint != "" {
 		opts = append(opts, agent.WithOllama(cli.OllamaEndpoint, clientopts...))
 	}
-	/*
-		if cli.AnthropicKey != "" {
-			opts = append(opts, agent.WithAnthropic(cli.AnthropicKey, clientopts...))
-		}
-	*/
+	if cli.AnthropicKey != "" {
+		opts = append(opts, agent.WithAnthropic(cli.AnthropicKey, clientopts...))
+	}
 	if cli.MistralKey != "" {
 		opts = append(opts, agent.WithMistral(cli.MistralKey, clientopts...))
 	}

pkg/agent/opt.go

@@ -4,6 +4,7 @@ import (
 	// Packages
 	client "github.com/mutablelogic/go-client"
 	llm "github.com/mutablelogic/go-llm"
+	"github.com/mutablelogic/go-llm/pkg/anthropic"
 	mistral "github.com/mutablelogic/go-llm/pkg/mistral"
 	ollama "github.com/mutablelogic/go-llm/pkg/ollama"
 )
@@ -22,18 +23,17 @@ func WithOllama(endpoint string, opts ...client.ClientOpt) llm.Opt {
 	}
 }
 
-/*
-	func WithAnthropic(key string, opts ...client.ClientOpt) llm.Opt {
-		return func(o *llm.Opts) error {
-			client, err := anthropic.New(key, opts...)
-			if err != nil {
-				return err
-			} else {
-				return llm.WithAgent(client)(o)
-			}
+func WithAnthropic(key string, opts ...client.ClientOpt) llm.Opt {
+	return func(o *llm.Opts) error {
+		client, err := anthropic.New(key, opts...)
+		if err != nil {
+			return err
+		} else {
+			return llm.WithAgent(client)(o)
 		}
 	}
-*/
+}
+
 func WithMistral(key string, opts ...client.ClientOpt) llm.Opt {
 	return func(o *llm.Opts) error {
 		client, err := mistral.New(key, opts...)

pkg/anthropic/client.go

@@ -5,6 +5,8 @@ package anthropic
 
 import (
 	// Packages
+	"context"
+
 	client "github.com/mutablelogic/go-client"
 	llm "github.com/mutablelogic/go-llm"
 )
@@ -42,10 +44,7 @@ func New(ApiKey string, opts ...client.ClientOpt) (*Client, error) {
 	}
 
 	// Return the client
-	return &Client{
-		Client: client,
-		cache:  make(map[string]llm.Model),
-	}, nil
+	return &Client{client, nil}, nil
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -55,3 +54,36 @@ func New(ApiKey string, opts ...client.ClientOpt) (*Client, error) {
 func (*Client) Name() string {
 	return defaultName
 }
+
+// Return the models
+func (anthropic *Client) Models(ctx context.Context) ([]llm.Model, error) {
+	// Cache models
+	if anthropic.cache == nil {
+		models, err := anthropic.ListModels(ctx)
+		if err != nil {
+			return nil, err
+		}
+		anthropic.cache = make(map[string]llm.Model, len(models))
+		for _, model := range models {
+			anthropic.cache[model.Name()] = model
+		}
+	}
+
+	// Return models
+	result := make([]llm.Model, 0, len(anthropic.cache))
+	for _, model := range anthropic.cache {
+		result = append(result, model)
+	}
+	return result, nil
+}
+
+// Return a model by name, or nil if not found.
+// Panics on error.
+func (anthropic *Client) Model(ctx context.Context, name string) llm.Model {
+	if anthropic.cache == nil {
+		if _, err := anthropic.Models(ctx); err != nil {
+			panic(err)
+		}
+	}
+	return anthropic.cache[name]
+}

pkg/anthropic/client_test.go

@@ -1,7 +1,10 @@
 package anthropic_test
 
 import (
+	"flag"
+	"log"
 	"os"
+	"strconv"
 	"testing"
 
 	// Packages
@@ -10,23 +13,46 @@ import (
 	assert "github.com/stretchr/testify/assert"
 )
 
-func Test_client_001(t *testing.T) {
-	assert := assert.New(t)
-	client, err := anthropic.New(GetApiKey(t), opts.OptTrace(os.Stderr, true))
-	if assert.NoError(err) {
-		assert.NotNil(client)
-		t.Log(client)
+///////////////////////////////////////////////////////////////////////////////
+// TEST SET-UP
+
+var (
+	client *anthropic.Client
+)
+
+func TestMain(m *testing.M) {
+	var verbose bool
+
+	// Verbose output
+	flag.Parse()
+	if f := flag.Lookup("test.v"); f != nil {
+		if v, err := strconv.ParseBool(f.Value.String()); err == nil {
+			verbose = v
+		}
 	}
+
+	// API KEY
+	api_key := os.Getenv("ANTHROPIC_API_KEY")
+	if api_key == "" {
+		log.Print("ANTHROPIC_API_KEY not set")
+		os.Exit(0)
+	}
+
+	// Create client
+	var err error
+	client, err = anthropic.New(api_key, opts.OptTrace(os.Stderr, verbose))
+	if err != nil {
+		log.Println(err)
+		os.Exit(-1)
+	}
+	os.Exit(m.Run())
 }
 
 ///////////////////////////////////////////////////////////////////////////////
-// ENVIRONMENT
+// TESTS
 
-func GetApiKey(t *testing.T) string {
-	key := os.Getenv("ANTHROPIC_API_KEY")
-	if key == "" {
-		t.Skip("ANTHROPIC_API_KEY not set, skipping tests")
-		t.SkipNow()
-	}
-	return key
+func Test_client_001(t *testing.T) {
+	assert := assert.New(t)
+	assert.NotNil(client)
+	t.Log(client)
 }