feat(providers): add Baseten to the free provider directory

[ahmetb]

Summary

• Add Baseten Model APIs to the free provider directory under signup-credit
  (new accounts receive free credits per the pricing FAQ) as a connectable
  OpenAI-compatible entry: https://inference.baseten.co/v1, key auth, live
  model discovery via /v1/models.
• Marked supported + official with lastVerified: 2026-07-30 after
  verifying both endpoints live.

Verification

• GET /v1/models with an API key → 200, OpenAI-shaped catalog (13 models).
• POST /v1/chat/completions (moonshotai/Kimi-K3, max_tokens: 1) → 200,
  standard chat.completion payload.
• bun x tsc --noEmit
• bun test tests/provider-registry-parity.test.ts (31 pass)
• bun test tests/provider-live-models.test.ts tests/opencode-free-provider.test.ts tests/mimo-free-provider.test.ts (41 pass)

Checklist

• Scope stays focused and avoids unrelated cleanup.
• Docs or release notes were updated when needed.
• Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults.

Summary by CodeRabbit

• New Features
  • Expanded signup-credit access to additional providers.
  • Added Baseten as a connectable provider, including setup details and documentation links.
  • Verified Baseten connectivity and chat completion support.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between be177ea and ed921f9.

📒 Files selected for processing (1)

• src/providers/free-directory.ts

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📝 Walkthrough

Walkthrough

Updates free-provider access-group membership and adds Baseten to the connectable provider map with OpenAI-compatible endpoint details, documentation links, and official verification metadata.

Changes

Provider directory configuration

Layer / File(s)	Summary
Access groups and Baseten connectivity src/providers/free-directory.ts	signup-credit now includes additional provider IDs, and CONNECTABLE includes Baseten with endpoint configuration, documentation links, and official verification dated 2026-07-30.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related issues

• [Provider] Promote a verified batch of OpenAI-compatible inference providers #572 — Directly relates to Baseten provider configuration, directory availability, and OpenAI-compatible endpoint metadata.

Possibly related PRs

• lidge-jun/opencodex#405 — Updates the same provider directory’s access-group and connectable-provider configuration.
• lidge-jun/opencodex#407 — Changes provider catalog membership consumed by free-directory configuration.
• lidge-jun/opencodex#653 — Directly relates to Baseten provider preset and discovery integration.

Suggested reviewers: lidge-jun, ingwannu, wibias

🚥 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 Baseten to the free provider directory.
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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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Add focused coverage for the Baseten directory entry

This adds Baseten metadata without a focused regression test. The existing provider-registry parity test checks only generic provenance invariants, so accidentally removing Baseten or changing its access group, endpoint, discovery mode, or verification metadata would still pass. Add a provider-specific test that asserts the new directory row and its propagated fields.

AGENTS.md reference: src/AGENTS.md:L22-L25

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[lidge-jun]

Landed on codex/260731-pr-merge-round, with your authorship preserved on the commit. That branch is a staging line: it merges into dev and ships once the performance work in flight there lands.

0856b0cb7 — landed unchanged.

Placement is what made this straightforward: a signup-credit row in the free directory, not a PROVIDER_REGISTRY entry. MAINTAINERS.md sets a credential-destination evidence bar for canonical presets, and an inert directory reference is the documented placement when that evidence is not fully assembled. Submitting it there rather than arguing for promotion saved a round trip.

The dated end-to-end check recorded inline next to the entry (2026-07-30, OpenAI-shaped /v1/models plus a real chat completion) is more than most directory rows carry.

Your Baseten affiliation is disclosed, which under MAINTAINERS.md is neither disqualifying nor a reason to lower the bar. If you want the canonical preset in #653, the remaining items are ToS, operating legal entity, and a named maintenance owner.