update for redisvl 0.23.0

[github-actions]

update for redisvl 0.23.0

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Note

Low Risk
Markdown-only documentation changes with no runtime or deployment logic in this repo; risk is limited to doc accuracy for operators configuring MCP.

Overview
Documentation is refreshed for RedisVL 0.23.0, mainly around MCP and a small Semantic Router API note.

Semantic Router: delete() is documented as removing both the semantic router index and its persisted route config (not just the index).

RedisVL MCP is rewritten from a single-index model to one server, one or more logical index bindings (indexes.<id>). New or expanded coverage includes the list-indexes discovery tool, optional index on search-records / upsert-records (required when multiple indexes are configured; omitted on single-index for backward compatibility), echoed index in responses, global vs per-index read_only, and when upsert-records is registered vs rejected with forbidden. Concepts and how-to guides add multi-index YAML examples, index-selection rules, discovery-first client flows, and clarified search-tool description behavior on multi-index servers.

HTTP transport security is documented as default Host / Origin allowlist validation (DNS rebinding mitigation), with server.transport_security, REDISVL_MCP_ALLOWED_HOSTS / ALLOWED_ORIGINS, proxy/gateway tuning (enabled: false, allow_any_origin), and notes for 0.0.0.0 binds. The authentication guide ties JWT auth to this layer and adds proxy Host header guidance.

^{Reviewed by Cursor Bugbot for commit 29dc831. Bugbot is set up for automated code reviews on this repo. Configure here.}

[jit-ci]

🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

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^{Security scan by Jit}

[github-actions]

Staging links:
https://redis.io/docs/staging/redisvl_docs_sync_0.23.0/develop/ai/redisvl/api/router/
https://redis.io/docs/staging/redisvl_docs_sync_0.23.0/develop/ai/redisvl/concepts/mcp/
https://redis.io/docs/staging/redisvl_docs_sync_0.23.0/develop/ai/redisvl/user_guide/how_to_guides/mcp/
https://redis.io/docs/staging/redisvl_docs_sync_0.23.0/develop/ai/redisvl/user_guide/how_to_guides/mcp_authentication/