feat(05-04): extend Tier 1 provider verify specs

- 12 Tier 1 providers now carry success_codes, failure_codes, rate_limit_codes
- {{KEY}} template in headers or URL (double-brace canonical form)
- metadata_paths added where provider APIs return useful metadata
- Anthropic switched to POST /v1/messages with minimal body
- Perplexity gains JSON body, content-type header
- Inflection verify URL left empty (no public endpoint)
- Dual-location sync preserved: providers/ mirrors pkg/providers/definitions/

pkg/providers/definitions/ai21.yaml

@@ -17,6 +17,7 @@ verify:
   method: GET
   url: https://api.ai21.com/studio/v1/models
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]

pkg/providers/definitions/anthropic.yaml

@@ -15,10 +15,16 @@ patterns:
     entropy_min: 3.5
     confidence: high
 verify:
-  method: GET
-  url: https://api.anthropic.com/v1/models
+  method: POST
+  url: https://api.anthropic.com/v1/messages
   headers:
-    x-api-key: "{KEY}"
+    x-api-key: "{{KEY}}"
     anthropic-version: "2023-06-01"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    content-type: "application/json"
+  body: '{"model":"claude-haiku-4-5","max_tokens":1,"messages":[{"role":"user","content":"hi"}]}'
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429, 529]
+  metadata_paths:
+    model: "model"
+    stop_reason: "stop_reason"

pkg/providers/definitions/cohere.yaml

@@ -17,6 +17,9 @@ verify:
   method: GET
   url: https://api.cohere.ai/v1/models
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    first_model: "models.0.name"

pkg/providers/definitions/deepseek.yaml

@@ -17,6 +17,9 @@ verify:
   method: GET
   url: https://api.deepseek.com/v1/models
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    first_model: "data.0.id"

pkg/providers/definitions/google-ai.yaml

@@ -14,7 +14,9 @@ patterns:
     confidence: high
 verify:
   method: GET
-  url: https://generativelanguage.googleapis.com/v1/models?key={KEY}
-  headers: {}
-  valid_status: [200]
-  invalid_status: [400, 401, 403]
+  url: https://generativelanguage.googleapis.com/v1/models?key={{KEY}}
+  success_codes: [200]
+  failure_codes: [400, 401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    first_model: "models.0.name"

pkg/providers/definitions/groq.yaml

@@ -16,6 +16,9 @@ verify:
   method: GET
   url: https://api.groq.com/openai/v1/models
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    first_model: "data.0.id"

pkg/providers/definitions/inflection.yaml

@@ -16,6 +16,6 @@ patterns:
 verify:
   method: GET
   url: ""
-  headers: {}
-  valid_status: []
-  invalid_status: []
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]

pkg/providers/definitions/mistral.yaml

@@ -17,6 +17,9 @@ verify:
   method: GET
   url: https://api.mistral.ai/v1/models
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    first_model: "data.0.id"

pkg/providers/definitions/openai.yaml

@@ -23,6 +23,10 @@ verify:
   method: GET
   url: https://api.openai.com/v1/models
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    first_model: "data.0.id"
+    object_type: "object"

pkg/providers/definitions/perplexity.yaml

@@ -16,6 +16,9 @@ verify:
   method: POST
   url: https://api.perplexity.ai/chat/completions
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200, 400]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+    content-type: "application/json"
+  body: '{"model":"sonar","messages":[{"role":"user","content":"hi"}],"max_tokens":1}'
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]

pkg/providers/definitions/together.yaml

@@ -17,6 +17,9 @@ verify:
   method: GET
   url: https://api.together.xyz/v1/models
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    first_model: "0.id"

pkg/providers/definitions/xai.yaml

@@ -15,6 +15,10 @@ verify:
   method: GET
   url: https://api.x.ai/v1/api-key
   headers:
-    Authorization: "Bearer {KEY}"
-  valid_status: [200]
-  invalid_status: [401, 403]
+    Authorization: "Bearer {{KEY}}"
+  success_codes: [200]
+  failure_codes: [401, 403]
+  rate_limit_codes: [429]
+  metadata_paths:
+    name: "name"
+    acls: "acls"