docs: add apiToken.sale Anthropic channel example

[apitokensale-admin]

Summary

Add English and Chinese setup instructions for connecting apiToken.sale through New API's existing Anthropic channel type. The guide documents the exact base URL behavior, distinguishes provider-issued keys from Anthropic-issued keys, links the model list and provider docs, and includes an explicit third-party/compliance notice.

This documentation change was AI-assisted and reviewed against the current New API Anthropic adaptor behavior.

Validation

• bunx prettier --check passed for both changed MDX files
• bun run build completed successfully (2,065 static pages)
• go test ./relay/channel/claude passed in QuantumNous/new-api
• Live request through the current New API Claude adaptor resolved https://api.apitoken.sale/v1/messages, set x-api-key plus anthropic-version: 2023-06-01, and returned HTTP 200 with claude-sonnet-4-6
• Direct live smoke tests passed for a normal message, SSE streaming, and forced tool use (HTTP 200 for all three)
• Linked homepage, model list, and provider documentation returned HTTP 200

No credentials or response contents are included in this PR.

Summary by CodeRabbit

• Documentation
  • Added English and Chinese setup examples for connecting an Anthropic-compatible third-party provider.
  • Documented Base URL, API key, model selection, channel saving, and connection testing steps.
  • Added a warning to independently verify the provider’s authorization, terms, and data-handling policies.

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[apitokensale-admin]

@greptileai

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: a89eb6cb-6fe6-4721-ad26-d815c480ec4a

📥 Commits

Reviewing files that changed from the base of the PR and between cb6ee07 and e9e0a51.

📒 Files selected for processing (2)

• content/docs/en/guide/feature-guide/admin/channel.mdx
• content/docs/zh/guide/feature-guide/admin/channel.mdx

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Walkthrough

The English and Chinese channel guides now include an end-to-end example for configuring and testing the Anthropic-compatible apiToken.sale provider, including Base URL, API key, model selection, and third-party verification guidance.

Changes

Anthropic-compatible provider documentation

Layer / File(s)	Summary
Provider configuration example content/docs/en/guide/feature-guide/admin/channel.mdx, content/docs/zh/guide/feature-guide/admin/channel.mdx	Adds localized setup instructions for apiToken.sale, including provider type, Base URL formatting, provider-issued API key, model selection, saving, connection testing, and third-party compliance verification.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Poem

I’m a bunny with docs in my paws,
Guiding keys and URLs by the laws.
Pick models, test the way,
Keep third-party checks in play—
Hop through setup without flaws!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: adding an apiToken.sale Anthropic channel setup example in the docs.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Warning

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