feat: improve Anthropic provider with model selection, system prompt, and scope validation

[DJBR007]

feat: add Anthropic Claude provider

Closes #2759

/claim #2759

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Summary

Adds a native Anthropic Claude provider to Keep, enabling workflows to use Claude models for alert enrichment, root cause analysis, runbook generation, and any other LLM-powered step or action.

This was the most-requested AI provider after OpenAI and directly addresses the ask in #2759.

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What's included

• keep/providers/anthropic_provider/anthropic_provider.py — full provider implementation
• keep/providers/anthropic_provider/__init__.py — auto-discovery entry point
• tests/providers/test_anthropic_provider.py — 10 unit tests (config, headers, query, overrides, error handling, scope validation)
• examples/workflows/anthropic_alert_enrichment.yaml — example workflow: Claude RCA on critical alerts → Slack

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Provider capabilities

Feature	Detail
Category	AI
Auth	Anthropic API key
Models	claude-opus-4-5, claude-sonnet-4-5, claude-haiku-4-5 (configurable)
System prompt	Configurable per-provider and per-call override
max_tokens	Configurable, default 1024
_query()	Returns text, model, input_tokens, output_tokens
validate_scopes()	Live API key check against Anthropic /v1/messages
Workflow compatible	Works as both step (query) and can be extended for action

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Example workflow usage

steps:
  - name: rca-analysis
    provider:
      config: "{{ providers.my_anthropic }}"
      type: anthropic
      with:
        prompt: |
          Analyze this alert and provide root cause + remediation steps:
          {{ alert }}

The step result exposes results.text, results.input_tokens, and results.output_tokens for use in downstream actions.

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Testing

pytest tests/providers/test_anthropic_provider.py -v

All 10 tests pass with mocked HTTP — no API key required for the test suite.

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Notes

• Uses only requests (already in Keep's dependency tree) — no new dependencies
• Follows the exact same pattern as openai_provider for consistency
• API version header pinned to 2023-06-01 (Anthropic's stable version)
• Gemini provider can be added in a follow-up PR using the same structure

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Happy to add a docs MDX page or any other changes the maintainers want. 🙏

[CLAassistant]

All committers have signed the CLA.

[DJBR007]

/attempt #2759

Working PR: #6444

[talboren]

LGTM

[github-actions]

🔥 Fantastic work @DJBR007! Your very first PR to keep has been merged! 🎉🥳

You've just taken your first step into open-source, and we couldn't be happier to have you onboard. 🙌
If you're feeling adventurous, why not dive into another issue and keep contributing? The community would love to see more from you! 🚀

For any support, feel free to reach out on the community: https://slack.keephq.dev. Happy coding! 👩‍💻👨‍💻