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Support Kimi Code API for Claude Code routing (#951)
* Support Kimi Code API and Claude Code protocol compatibility Co-authored-by: Musa <musa@spherrrical.dev> * Fix black formatting in config_generator Co-authored-by: Musa <musa@spherrrical.dev> * Warn when stripping unsupported Kimi Code request fields Co-authored-by: Musa <musa@spherrrical.dev> --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com>
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8 changed files with 183 additions and 2 deletions
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@ -39,6 +39,42 @@ CHATGPT_API_BASE = "https://chatgpt.com/backend-api/codex"
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CHATGPT_DEFAULT_ORIGINATOR = "codex_cli_rs"
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CHATGPT_DEFAULT_USER_AGENT = "codex_cli_rs/0.0.0 (Unknown 0; unknown) unknown"
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KIMI_CODE_API_HOST = "api.kimi.com"
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KIMI_CODE_DEFAULT_USER_AGENT = "KimiCLI/1.3"
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def normalize_kimi_code_base_url(base_url: str) -> str:
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"""Ensure Kimi Code API base URLs include the /v1 suffix."""
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parsed = urlparse(base_url)
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if parsed.hostname != KIMI_CODE_API_HOST:
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return base_url
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path = parsed.path.rstrip("/")
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if path.endswith("/coding"):
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return f"{parsed.scheme}://{parsed.netloc}{path}/v1"
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return base_url
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def apply_kimi_code_provider_defaults(model_provider: dict) -> None:
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"""Inject Kimi Code API defaults (User-Agent, normalized base URL)."""
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base_url = model_provider.get("base_url")
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if not base_url:
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return
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parsed = urlparse(base_url)
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model_id = model_provider.get("model", "")
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is_kimi_code = (
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parsed.hostname == KIMI_CODE_API_HOST or model_id == "kimi-for-coding"
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)
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if not is_kimi_code:
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return
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normalized = normalize_kimi_code_base_url(base_url)
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if normalized != base_url:
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model_provider["base_url"] = normalized
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headers = model_provider.setdefault("headers", {})
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headers.setdefault("User-Agent", KIMI_CODE_DEFAULT_USER_AGENT)
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SUPPORTED_PROVIDERS = (
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SUPPORTED_PROVIDERS_WITHOUT_BASE_URL + SUPPORTED_PROVIDERS_WITH_BASE_URL
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)
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@ -463,6 +499,8 @@ def validate_and_render_schema():
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headers.setdefault("session_id", str(uuid.uuid4()))
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model_provider["headers"] = headers
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apply_kimi_code_provider_defaults(model_provider)
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updated_model_providers.append(model_provider)
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if model_provider.get("base_url", None):
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@ -3,8 +3,10 @@ import pytest
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import yaml
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from unittest import mock
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from planoai.config_generator import (
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validate_and_render_schema,
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apply_kimi_code_provider_defaults,
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migrate_inline_routing_preferences,
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normalize_kimi_code_base_url,
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validate_and_render_schema,
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)
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@ -795,3 +797,29 @@ model_providers:
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migrate_inline_routing_preferences(config_yaml)
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assert config_yaml["version"] == "v0.5.0"
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def test_normalize_kimi_code_base_url_appends_v1_suffix():
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assert (
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normalize_kimi_code_base_url("https://api.kimi.com/coding")
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== "https://api.kimi.com/coding/v1"
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)
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assert (
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normalize_kimi_code_base_url("https://api.kimi.com/coding/")
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== "https://api.kimi.com/coding/v1"
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)
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assert (
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normalize_kimi_code_base_url("https://api.kimi.com/coding/v1")
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== "https://api.kimi.com/coding/v1"
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)
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def test_apply_kimi_code_provider_defaults_injects_user_agent():
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provider = {
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"model": "kimi-for-coding",
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"base_url": "https://api.kimi.com/coding",
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"access_key": "$MOONSHOTAI_API_KEY",
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}
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apply_kimi_code_provider_defaults(provider)
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assert provider["base_url"] == "https://api.kimi.com/coding/v1"
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assert provider["headers"]["User-Agent"] == "KimiCLI/1.3"
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@ -194,6 +194,7 @@ properties:
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- digitalocean
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- vercel
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- openrouter
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- moonshotai
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headers:
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type: object
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additionalProperties:
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@ -252,6 +253,7 @@ properties:
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- digitalocean
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- vercel
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- openrouter
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- moonshotai
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headers:
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type: object
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additionalProperties:
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@ -1,3 +1,4 @@
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use log::warn;
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use serde::{Deserialize, Serialize};
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use serde_json::Value;
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use serde_with::skip_serializing_none;
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@ -136,6 +137,39 @@ impl ChatCompletionsRequest {
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self.temperature = Some(1.0);
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}
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}
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/// Strip request fields that Kimi Code API (`kimi-for-coding`) rejects or mishandles.
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pub fn normalize_for_kimi_code_api(&mut self) {
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if self.stream_options.is_some() {
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warn!("kimi-for-coding: stripping unsupported stream_options from upstream request");
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self.stream_options = None;
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}
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if self.reasoning_effort.is_some() {
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warn!(
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"kimi-for-coding: stripping unsupported reasoning_effort from upstream request"
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);
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self.reasoning_effort = None;
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}
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if self.web_search_options.is_some() {
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warn!(
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"kimi-for-coding: stripping unsupported web_search_options from upstream request"
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);
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self.web_search_options = None;
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}
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if self.service_tier.is_some() {
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warn!("kimi-for-coding: stripping unsupported service_tier from upstream request");
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self.service_tier = None;
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}
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if self.store.is_some() {
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warn!("kimi-for-coding: stripping unsupported store from upstream request");
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self.store = None;
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}
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}
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}
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/// True when the upstream model id is Moonshot's Kimi Code endpoint model.
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pub fn is_kimi_code_model(model: &str) -> bool {
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model == "kimi-for-coding"
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}
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// ============================================================================
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@ -312,6 +312,7 @@ providers:
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- deepseek/deepseek-chat
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- deepseek/deepseek-reasoner
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moonshotai:
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- moonshotai/kimi-for-coding
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- moonshotai/kimi-k2-thinking
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- moonshotai/moonshot-v1-auto
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- moonshotai/moonshot-v1-32k-vision-preview
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@ -500,6 +500,19 @@ mod tests {
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"/custom/api/v2/chat/completions"
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);
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// Kimi Code API: base_url path prefix already includes /coding/v1
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assert_eq!(
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api.target_endpoint_for_provider(
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&ProviderId::Moonshotai,
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"/v1/messages",
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"kimi-for-coding",
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false,
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Some("/coding/v1"),
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false
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),
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"/coding/v1/chat/completions"
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);
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// Test Groq with custom prefix
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assert_eq!(
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api.target_endpoint_for_provider(
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@ -1,5 +1,6 @@
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use crate::apis::anthropic::MessagesRequest;
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use crate::apis::openai::ChatCompletionsRequest;
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use crate::apis::openai::{is_kimi_code_model, ChatCompletionsRequest};
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use log::warn;
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use crate::apis::amazon_bedrock::{ConverseRequest, ConverseStreamRequest};
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use crate::apis::openai_responses::ResponsesAPIRequest;
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@ -90,6 +91,24 @@ impl ProviderRequestType {
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}
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}
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if matches!(
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upstream_api,
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SupportedUpstreamAPIs::OpenAIChatCompletions(_)
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) {
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if let Self::ChatCompletionsRequest(req) = self {
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if is_kimi_code_model(req.model()) {
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req.normalize_for_kimi_code_api();
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}
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} else if let Self::MessagesRequest(req) = self {
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if is_kimi_code_model(req.model.as_str()) && req.thinking.is_some() {
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warn!(
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"kimi-for-coding: stripping unsupported thinking config from upstream request"
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);
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req.thinking = None;
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}
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}
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}
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// ChatGPT requires instructions, store=false, and input as a list
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if provider_id == ProviderId::ChatGPT {
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if let Self::ResponsesAPIRequest(req) = self {
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@ -879,6 +898,42 @@ mod tests {
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assert!(req.web_search_options.is_none());
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}
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#[test]
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fn test_normalize_for_upstream_kimi_code_strips_unsupported_chat_fields() {
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use crate::apis::openai::{Message, MessageContent, OpenAIApi, Role, StreamOptions};
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let mut request = ProviderRequestType::ChatCompletionsRequest(ChatCompletionsRequest {
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model: "kimi-for-coding".to_string(),
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messages: vec![Message {
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role: Role::User,
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content: Some(MessageContent::Text("hello".to_string())),
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name: None,
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tool_calls: None,
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tool_call_id: None,
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}],
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stream_options: Some(StreamOptions {
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include_usage: Some(true),
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}),
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reasoning_effort: Some("high".to_string()),
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web_search_options: Some(serde_json::json!({"search_context_size":"medium"})),
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..Default::default()
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});
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request
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.normalize_for_upstream(
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ProviderId::Moonshotai,
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&SupportedUpstreamAPIs::OpenAIChatCompletions(OpenAIApi::ChatCompletions),
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)
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.unwrap();
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let ProviderRequestType::ChatCompletionsRequest(req) = request else {
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panic!("expected chat request");
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};
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assert!(req.stream_options.is_none());
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assert!(req.reasoning_effort.is_none());
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assert!(req.web_search_options.is_none());
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}
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#[test]
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fn test_normalize_for_upstream_non_xai_keeps_chat_web_search_options() {
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use crate::apis::openai::{Message, MessageContent, OpenAIApi, Role};
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@ -432,6 +432,9 @@ Moonshot AI
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* - Model Name
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- Model ID for Config
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- Description
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* - Kimi for Coding
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- ``moonshotai/kimi-for-coding``
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- Kimi Code API model for agentic coding (use with ``base_url: https://api.kimi.com/coding/v1``)
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* - Kimi K2 Preview
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- ``moonshotai/kimi-k2-0905-preview``
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- Foundation model optimized for agentic tasks with 32B activated parameters
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@ -447,6 +450,13 @@ Moonshot AI
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.. code-block:: yaml
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llm_providers:
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# Kimi Code API (Claude Code / agentic clients via Plano translation)
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- model: moonshotai/kimi-for-coding
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access_key: $MOONSHOTAI_API_KEY
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base_url: https://api.kimi.com/coding/v1
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headers:
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User-Agent: "KimiCLI/1.3"
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# Latest K2 models for agentic tasks
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- model: moonshotai/kimi-k2-0905-preview
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access_key: $MOONSHOTAI_API_KEY
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