Class: Prescient::Provider::Anthropic

Inherits:
Base
  • Object
show all
Includes:
HTTParty
Defined in:
lib/prescient/provider/anthropic.rb

Instance Attribute Summary

Attributes inherited from Base

#options

Instance Method Summary collapse

Methods inherited from Base

#available?

Constructor Details

#initialize(**options) ⇒ Anthropic

Returns a new instance of Anthropic.



10
11
12
13
 
# File 'lib/prescient/provider/anthropic.rb', line 10

def initialize(**options)
  super
  self.class.default_timeout(@options[:timeout] || 60)
end

Instance Method Details

#generate_embedding(_text, **_options) ⇒ Object

Raises:



15
16
17
18
19
 
# File 'lib/prescient/provider/anthropic.rb', line 15

def generate_embedding(_text, **_options)
  # Anthropic doesn't provide embedding API, raise error
  raise Prescient::Error,
        'Anthropic provider does not support embeddings. Use OpenAI or HuggingFace for embeddings.'
end

#generate_response(prompt, context_items = [], **options) ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/prescient/provider/anthropic.rb', line 21

def generate_response(prompt, context_items = [], **options)
  handle_errors do
    formatted_prompt = build_prompt(prompt, context_items)

    response = self.class.post('/v1/messages',
                               headers: {
                                 'Content-Type'      => 'application/json',
                                 'x-api-key'         => @options[:api_key],
                                 'anthropic-version' => '2023-06-01',
                               },
                               body:    {
                                 model:       @options[:model],
                                 max_tokens:  options[:max_tokens] || 2000,
                                 temperature: options[:temperature] || 0.7,
                                 messages:    [
                                   {
                                     role:    'user',
                                     content: formatted_prompt,
                                   },
                                 ],
                               }.to_json)

    validate_response!(response, 'text generation')

    content = response.parsed_response.dig('content', 0, 'text')
    raise Prescient::InvalidResponseError, 'No response generated' unless content

    {
      response:        content.strip,
      model:           @options[:model],
      provider:        'anthropic',
      processing_time: nil,
      metadata:        {
        usage: response.parsed_response['usage'],
      },
    }
  end
end

#health_check ⇒ Object 



60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
 
# File 'lib/prescient/provider/anthropic.rb', line 60

def health_check
  handle_errors do
    # Test with a simple message
    response = self.class.post('/v1/messages',
                               headers: {
                                 'Content-Type'      => 'application/json',
                                 'x-api-key'         => @options[:api_key],
                                 'anthropic-version' => '2023-06-01',
                               },
                               body:    {
                                 model:      @options[:model],
                                 max_tokens: 10,
                                 messages:   [
                                   {
                                     role:    'user',
                                     content: 'Test',
                                   },
                                 ],
                               }.to_json)

    if response.success?
      {
        status:   'healthy',
        provider: 'anthropic',
        model:    @options[:model],
        ready:    true,
      }
    else
      {
        status:   'unhealthy',
        provider: 'anthropic',
        error:    "HTTP #{response.code}",
        message:  response.message,
      }
    end
  end
rescue Prescient::ConnectionError => e
  {
    status:   'unavailable',
    provider: 'anthropic',
    error:    e.class.name,
    message:  e.message,
  }
end

#list_models ⇒ Object 



105
106
107
108
109
110
111
112
 
# File 'lib/prescient/provider/anthropic.rb', line 105

def list_models
  # Anthropic doesn't provide a models list API
  [
    { name: 'claude-3-haiku-20240307', type: 'text' },
    { name: 'claude-3-sonnet-20240229', type: 'text' },
    { name: 'claude-3-opus-20240229', type: 'text' },
  ]
end