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Add Anthropic Messages bridge for OpenAI-compatible chat providers #26

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Merged
OnlyTerp merged 4 commits into from
Jun 8, 2026
Merged

Add Anthropic Messages bridge for OpenAI-compatible chat providers #26

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0d10a59
feat: add Anthropic Messages bridge
eafire15 Jun 2, 2026
3f1dc19
fix: empty string for tool-only assistant content, deduplicate helper…
codex Jun 2, 2026
7a385d7
fix: uuid message ids, model slug in passthrough SSE, preserve tool n…
eafire15 Jun 2, 2026
18a6ff5
Merge remote-tracking branch 'origin/main' into fix26
Jun 8, 2026
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10 changes: 10 additions & 0 deletions README.md
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Expand Up @@ -342,6 +342,16 @@ Supported `provider` values:
| `generic-chat-completion-api` | OpenAI-shaped chat completions |
| `anthropic` | Anthropic `/v1/messages` |

The shim also accepts Anthropic Messages requests at
`http://127.0.0.1:8765/v1/messages`. For `openai` and
`generic-chat-completion-api` models, it translates Messages requests to
OpenAI-shaped chat completions and converts responses back to Anthropic shape.
For `anthropic` models, it passes the request through to the upstream
`/messages` endpoint with the configured model name. The bridge supports text,
image inputs, basic function tools/tool results, and streaming SSE. Provider
features such as prompt caching, extended thinking signatures, files, and token
counting remain upstream-specific.

Useful model fields:

| field | behavior |
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