feat(gateway): add OpenAI Responses API endpoints#1656
feat(gateway): add OpenAI Responses API endpoints#1656ilblackdragon merged 2 commits intostagingfrom
Conversation
Add POST /v1/responses and GET /v1/responses/{id} to the web gateway,
implementing the OpenAI Responses API. Unlike the existing Chat
Completions proxy which passes through to the raw LLM, the Responses
API routes requests through the full agent loop — giving external
clients access to tools, memory, safety, and server-side conversation
state via a standard OpenAI-compatible interface.
Key design decisions:
- Response IDs encode thread UUIDs statelessly (resp_{uuid_simple})
- previous_response_id enables multi-turn conversations
- Streaming maps AppEvent variants to Responses API SSE events
- Tool approval returns response.failed (no interactive approval flow)
- GET endpoint reconstructs ResponseObject from conversation_messages
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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scope: channel/web
Summary of ChangesHello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request significantly enhances the gateway's capabilities by introducing new API endpoints that conform to the OpenAI Responses API. This integration allows for more sophisticated interactions, enabling external applications to leverage the full power of the agent's tools, memory, and conversational state, moving beyond simple LLM proxies to a more intelligent, stateful interaction model. Highlights
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Code Review
This pull request introduces a new OpenAI Responses API, including POST /v1/responses and GET /v1/responses/{id} endpoints. This API routes requests through the full agent loop, providing access to tools, memory, and conversation state. Review comments suggest removing the unused Incomplete variant from ResponseStatus and addressing potential issues with call_id handling during the reconstruction of historical responses, specifically regarding the use of unwrap_or("") for FunctionCall and explicitly setting an empty string for FunctionCallOutput, which could lead to incorrect linking and loss of conversational context.
| Completed, | ||
| Failed, | ||
| Incomplete, | ||
| } |
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The Incomplete variant of ResponseStatus is defined but does not appear to be used anywhere in the current implementation. If this status is not intended for future use, it should be removed to avoid dead code and improve maintainability.
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Fixed — removed the Incomplete variant entirely.
| let name = call | ||
| .get("name") | ||
| .and_then(|v| v.as_str()) | ||
| .unwrap_or("unknown") | ||
| .to_string(); |
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The call_id for FunctionCall is extracted using unwrap_or(""). If the id field is missing or malformed in the stored tool_calls JSON, it will result in an empty string. This could lead to difficulties in correctly linking FunctionCall and FunctionCallOutput items when reconstructing historical responses, potentially breaking the logical flow of the conversation. Consider handling this case more robustly, perhaps by logging a warning or returning an error if a valid call_id is critical.
References
- Using
unwrap_or("")for a critical field likecall_idis analogous to using a default value for a critical field. This can lead to silent failures and incorrect linking, as it prevents deserialization from failing when critical data is missing, which is generally safer.
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Fixed — now uses a fallback chain: call_id → tool_call_id → id, matching the actual storage format.
| // Tool results reference a call_id via the name field pattern. | ||
| output.push(ResponseOutputItem::FunctionCallOutput { | ||
| id: make_item_id(), | ||
| call_id: String::new(), |
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When reconstructing FunctionCallOutput from stored messages, the call_id is explicitly set to String::new(). This means that these outputs will not be correctly linked to their corresponding FunctionCall items. This can lead to a loss of conversational context and make it harder to understand the flow of tool executions when retrieving historical responses. If the call_id can be derived from the msg.name field as suggested by the comment, it should be used here.
References
- Explicitly setting
call_idtoString::new()forFunctionCallOutputcan lead to incorrect attribution and a loss of conversational context, similar to the issues that arise from incorrect tool call attribution. It's crucial to ensurecall_ids are correctly linked to maintain the flow of tool executions.
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Fixed — the tool role reconstruction now looks up the preceding FunctionCall item's call_id to correlate them properly.
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Pull request overview
Adds OpenAI-compatible Responses API endpoints to the web gateway, routing requests through IronClaw’s full agent loop (tools/memory/safety/state) instead of the existing raw LLM proxy.
Changes:
- Register
POST /v1/responsesandGET /v1/responses/{id}routes on the gateway server. - Introduce
responses_api.rswith request/response DTOs, thread/response ID encoding, SSE streaming mapper, and a non-streaming event accumulator. - Export the new module from
src/channels/web/mod.rs.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 8 comments.
| File | Description |
|---|---|
src/channels/web/server.rs |
Adds routing for the new Responses API endpoints. |
src/channels/web/mod.rs |
Exposes the new responses_api module. |
src/channels/web/responses_api.rs |
Implements handlers, SSE streaming worker, event→Responses mapping, GET reconstruction, and unit tests. |
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| // Tool calls are stored as JSON arrays. | ||
| if let Ok(calls) = | ||
| serde_json::from_str::<Vec<serde_json::Value>>(&msg.content) | ||
| { | ||
| for call in calls { | ||
| let name = call | ||
| .get("name") | ||
| .and_then(|v| v.as_str()) | ||
| .unwrap_or("unknown") | ||
| .to_string(); | ||
| let call_id = call | ||
| .get("id") | ||
| .and_then(|v| v.as_str()) | ||
| .unwrap_or("") | ||
| .to_string(); | ||
| let arguments = call | ||
| .get("arguments") | ||
| .map(|v| { | ||
| if v.is_string() { | ||
| v.as_str().unwrap_or("{}").to_string() | ||
| } else { | ||
| serde_json::to_string(v).unwrap_or_default() | ||
| } | ||
| }) | ||
| .unwrap_or_default(); | ||
| output.push(ResponseOutputItem::FunctionCall { | ||
| id: make_item_id(), | ||
| call_id, | ||
| name, | ||
| arguments, | ||
| }); |
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Tool-call rows are no longer always stored as a plain JSON array; the persistence layer can store an object like { "calls": [...], "narrative": "..." } (with legacy array support). This code only attempts Vec<Value> parsing and will silently drop tool calls for the wrapped format. Also, persisted tool-call IDs use call_id (and sometimes tool_call_id), but this reads id, so call_id will often be empty. Update parsing to handle both shapes and use the correct keys.
| // Tool calls are stored as JSON arrays. | |
| if let Ok(calls) = | |
| serde_json::from_str::<Vec<serde_json::Value>>(&msg.content) | |
| { | |
| for call in calls { | |
| let name = call | |
| .get("name") | |
| .and_then(|v| v.as_str()) | |
| .unwrap_or("unknown") | |
| .to_string(); | |
| let call_id = call | |
| .get("id") | |
| .and_then(|v| v.as_str()) | |
| .unwrap_or("") | |
| .to_string(); | |
| let arguments = call | |
| .get("arguments") | |
| .map(|v| { | |
| if v.is_string() { | |
| v.as_str().unwrap_or("{}").to_string() | |
| } else { | |
| serde_json::to_string(v).unwrap_or_default() | |
| } | |
| }) | |
| .unwrap_or_default(); | |
| output.push(ResponseOutputItem::FunctionCall { | |
| id: make_item_id(), | |
| call_id, | |
| name, | |
| arguments, | |
| }); | |
| // Tool calls may be stored as a raw JSON array (legacy) or as an | |
| // object wrapper like `{ "calls": [...], "narrative": "..." }`. | |
| if let Ok(value) = | |
| serde_json::from_str::<serde_json::Value>(&msg.content) | |
| { | |
| // Helper to push function-call items from a set of call objects. | |
| let mut push_calls = |calls: &[serde_json::Value]| { | |
| for call in calls { | |
| let name = call | |
| .get("name") | |
| .and_then(|v| v.as_str()) | |
| .unwrap_or("unknown") | |
| .to_string(); | |
| // Prefer `call_id` (or `tool_call_id`) and fall back to `id`. | |
| let call_id = call | |
| .get("call_id") | |
| .or_else(|| call.get("tool_call_id")) | |
| .or_else(|| call.get("id")) | |
| .and_then(|v| v.as_str()) | |
| .unwrap_or("") | |
| .to_string(); | |
| let arguments = call | |
| .get("arguments") | |
| .map(|v| { | |
| if v.is_string() { | |
| v.as_str().unwrap_or("{}").to_string() | |
| } else { | |
| serde_json::to_string(v).unwrap_or_default() | |
| } | |
| }) | |
| .unwrap_or_default(); | |
| output.push(ResponseOutputItem::FunctionCall { | |
| id: make_item_id(), | |
| call_id, | |
| name, | |
| arguments, | |
| }); | |
| } | |
| }; | |
| match value { | |
| serde_json::Value::Array(ref calls) => { | |
| // Legacy format: top-level array of calls. | |
| push_calls(calls); | |
| } | |
| serde_json::Value::Object(ref obj) => { | |
| // New format: { "calls": [...], "narrative": "..." }. | |
| if let Some(calls_val) = obj.get("calls").and_then(|v| v.as_array()) { | |
| push_calls(calls_val); | |
| } | |
| if let Some(narrative) = | |
| obj.get("narrative").and_then(|v| v.as_str()) | |
| { | |
| if !narrative.is_empty() { | |
| output.push(ResponseOutputItem::Message { | |
| id: format!("msg_{}", msg.id.simple()), | |
| role: "assistant".to_string(), | |
| content: vec![MessageContent::OutputText { | |
| text: narrative.to_string(), | |
| }], | |
| }); | |
| } | |
| } | |
| } | |
| _ => { | |
| // Unsupported shape; ignore to match previous behavior. | |
| } |
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Fixed — parsing now handles both the legacy plain array format and the { "calls": [...], "narrative": "..." } object wrapper. Also switched key lookup to call_id / tool_call_id / id fallback chain, and reads parameters alongside arguments.
| // Resolve or create thread. | ||
| let thread_uuid = match &req.previous_response_id { | ||
| Some(prev_id) => decode_response_id(prev_id).map_err(|e| { | ||
| api_error(StatusCode::BAD_REQUEST, e, "invalid_request_error") | ||
| })?, | ||
| None => Uuid::new_v4(), | ||
| }; | ||
| let thread_id_str = thread_uuid.to_string(); | ||
|
|
||
| // Build the message for the agent loop. | ||
| let msg = IncomingMessage::new("gateway", &user.user_id, &content) | ||
| .with_thread(&thread_id_str) | ||
| .with_metadata(serde_json::json!({ | ||
| "thread_id": &thread_id_str, | ||
| "source": "responses_api", | ||
| })); | ||
|
|
||
| let resp_id = encode_response_id(&thread_uuid); |
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When previous_response_id is None, this handler mints a fresh UUID and always sets it as thread_id. For the gateway channel, UUID-shaped thread IDs are expected to already exist/be owned (see agent hydration logic), otherwise the agent loop rejects the message as an invalid/unauthorized thread. Fix by ensuring the conversation row exists (e.g., store.ensure_conversation(thread_uuid, "gateway", user_id, None) and optionally set thread metadata) before sending the message, or avoid setting a UUID thread_id until after a thread is created via the existing new-thread flow.
| // Resolve or create thread. | |
| let thread_uuid = match &req.previous_response_id { | |
| Some(prev_id) => decode_response_id(prev_id).map_err(|e| { | |
| api_error(StatusCode::BAD_REQUEST, e, "invalid_request_error") | |
| })?, | |
| None => Uuid::new_v4(), | |
| }; | |
| let thread_id_str = thread_uuid.to_string(); | |
| // Build the message for the agent loop. | |
| let msg = IncomingMessage::new("gateway", &user.user_id, &content) | |
| .with_thread(&thread_id_str) | |
| .with_metadata(serde_json::json!({ | |
| "thread_id": &thread_id_str, | |
| "source": "responses_api", | |
| })); | |
| let resp_id = encode_response_id(&thread_uuid); | |
| // Resolve or reuse an existing thread. | |
| let thread_uuid_opt = match &req.previous_response_id { | |
| Some(prev_id) => Some(decode_response_id(prev_id).map_err(|e| { | |
| api_error(StatusCode::BAD_REQUEST, e, "invalid_request_error") | |
| })?), | |
| None => None, | |
| }; | |
| let thread_id_str = thread_uuid_opt | |
| .as_ref() | |
| .map(|u| u.to_string()) | |
| .unwrap_or_else(|| "".to_string()); | |
| // Build the message for the agent loop. | |
| let mut msg = IncomingMessage::new("gateway", &user.user_id, &content) | |
| .with_metadata(serde_json::json!({ | |
| "thread_id": if thread_id_str.is_empty() { | |
| serde_json::Value::Null | |
| } else { | |
| serde_json::Value::String(thread_id_str.clone()) | |
| }, | |
| "source": "responses_api", | |
| })); | |
| if let Some(ref thread_uuid) = thread_uuid_opt { | |
| msg = msg.with_thread(&thread_uuid.to_string()); | |
| } | |
| // Each response gets its own ID, independent of any thread UUID. | |
| let resp_uuid = Uuid::new_v4(); | |
| let resp_id = encode_response_id(&resp_uuid); |
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Fixed — response IDs now encode both a per-call response_uuid and the thread_uuid (resp_{resp_hex}{thread_hex}). Each POST produces a unique response ID. previous_response_id decodes the thread UUID for conversation continuity.
| let msg = IncomingMessage::new("gateway", &user.user_id, &content) | ||
| .with_thread(&thread_id_str) | ||
| .with_metadata(serde_json::json!({ | ||
| "thread_id": &thread_id_str, |
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IncomingMessage metadata here does not include user_id. Gateway send_status() scopes events to a user only when metadata.user_id is present; otherwise it broadcasts globally. Because this endpoint relies on StreamChunk/tool status events, omitting user_id will leak those events to all connected users (and also deliver them to other users’ subscribe_raw(Some(..)) subscribers as global events). Include user_id in metadata (and keep thread_id) so status events are user-scoped.
| "thread_id": &thread_id_str, | |
| "thread_id": &thread_id_str, | |
| "user_id": &user.user_id, |
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Fixed — added "user_id" to the IncomingMessage metadata so SSE events are properly user-scoped.
| fn finish(self) -> ResponseObject { | ||
| ResponseObject { | ||
| id: self.resp_id, | ||
| object: "response", | ||
| created_at: unix_timestamp(), | ||
| model: self.model, | ||
| status: if self.failed { | ||
| ResponseStatus::Failed | ||
| } else { | ||
| ResponseStatus::Completed | ||
| }, | ||
| output: self.output, | ||
| usage: self.usage, | ||
| } |
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ResponseAccumulator tracks error_message, but it is never surfaced in ResponseObject (and finish() ignores it). This makes failed/time-out responses indistinguishable from other failures and drops useful diagnostics. Either remove error_message entirely or add an error/last_error field to ResponseObject (matching the Responses API shape) and populate it from accumulator state.
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Fixed — added error: Option<ResponseError> field to ResponseObject (with skip_serializing_if = "Option::is_none"). The accumulator's error_message is now surfaced in the final response.
| fn finish(self) -> ResponseObject { | ||
| ResponseObject { | ||
| id: self.resp_id, | ||
| object: "response", | ||
| created_at: unix_timestamp(), | ||
| model: self.model, | ||
| status: if self.failed { | ||
| ResponseStatus::Failed | ||
| } else { | ||
| ResponseStatus::Completed | ||
| }, | ||
| output: self.output, | ||
| usage: self.usage, | ||
| } |
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created_at is recomputed in finish() via unix_timestamp(), so the timestamp in response.created (streaming) and the final response.completed/failed object can differ. Responses API clients typically expect created_at to remain stable for a given response ID. Consider storing created_at once in the accumulator (or passing it in) and reusing it for all emitted ResponseObjects.
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Fixed — created_at is now captured once in the accumulator constructor and reused for all emitted ResponseObjects (streaming and final).
| fn emit( | ||
| tx: &tokio::sync::mpsc::Sender<Event>, | ||
| evt_type: &str, | ||
| payload: &impl Serialize, | ||
| ) -> bool { | ||
| if let Ok(data) = serde_json::to_string(payload) { | ||
| tx.try_send(sse_event(evt_type, &data)).is_ok() | ||
| } else { | ||
| true // serialization failure is non-fatal; keep going | ||
| } | ||
| } |
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The streaming worker uses try_send() and mostly ignores the return value from emit(). If the client disconnects (channel closed) or the buffer is full, the task will keep running until it hits a terminal event or the 120s timeout, wasting resources and potentially dropping important terminal events. Consider treating any failed send as a signal to stop the worker (or switch to send().await with backpressure).
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Acknowledged — keeping the current try_send behavior for now since the SSE stream will naturally close when the client disconnects (the Receiver drop triggers cleanup). The 120s timeout caps resource usage. Will revisit if this causes issues in practice.
| AppEvent::ToolCompleted { name, parameters, .. } => { | ||
| if let Some(args) = parameters { | ||
| for item in acc.output.iter_mut().rev() { | ||
| if let ResponseOutputItem::FunctionCall { | ||
| name: n, | ||
| arguments: a, | ||
| .. | ||
| } = item | ||
| && *n == *name | ||
| && a.is_empty() | ||
| { | ||
| *a = args.clone(); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| if let Some(idx) = current_tool_index.take() | ||
| && let Some(item) = acc.output.get(idx) | ||
| { | ||
| emit(&tx, "response.output_item.done", &ResponseStreamEvent::OutputItemDone { | ||
| output_index: idx, | ||
| item: item.clone(), | ||
| }); | ||
| } | ||
| } |
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In streaming mode, AppEvent::ToolCompleted is treated as “done” for the function_call item, but success/error are ignored. Non-streaming mode emits a function_call_output with an error on tool failure; streaming mode currently drops that information. Handle success == false by emitting a function_call_output item (or failing the response) so clients see tool failures consistently across streaming and non-streaming.
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Fixed — streaming ToolCompleted now emits a FunctionCallOutput with the error when success == false, matching the non-streaming behavior.
| pub async fn get_response_handler( | ||
| State(state): State<Arc<GatewayState>>, | ||
| super::auth::AuthenticatedUser(_user): super::auth::AuthenticatedUser, | ||
| Path(id): Path<String>, | ||
| ) -> Result<Json<ResponseObject>, ApiError> { | ||
| let thread_uuid = decode_response_id(&id).map_err(|e| { | ||
| api_error(StatusCode::BAD_REQUEST, e, "invalid_request_error") | ||
| })?; | ||
|
|
||
| let store = state.store.as_ref().ok_or_else(|| { | ||
| api_error( | ||
| StatusCode::SERVICE_UNAVAILABLE, | ||
| "Database not configured", | ||
| "server_error", | ||
| ) | ||
| })?; | ||
|
|
||
| // Load messages for this conversation. | ||
| let messages = store | ||
| .list_conversation_messages(thread_uuid) | ||
| .await | ||
| .map_err(|e| { | ||
| api_error( | ||
| StatusCode::INTERNAL_SERVER_ERROR, | ||
| format!("Failed to load conversation: {e}"), | ||
| "server_error", | ||
| ) | ||
| })?; |
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GET /v1/responses/{id} loads conversation messages by UUID without verifying that the authenticated user owns that conversation. A guessed/obtained response ID would allow cross-user data access. Add an ownership check (e.g., store.conversation_belongs_to_user(thread_uuid, user_id)) and return 404/403 when not owned before calling list_conversation_messages.
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Fixed — added conversation_belongs_to_user() check before loading messages. Returns 404 (not 403) to avoid leaking existence of other users' conversations.
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Review: feat(gateway): add OpenAI Responses API endpoints
I agree with @zmanian's verdict — this won't compile against the current codebase. The compilation blockers (AppEvent vs SseEvent, subscribe_raw/RateLimiter::check signature mismatches, missing AuthenticatedUser extractor) are clear showstoppers. Below I focus on issues not yet raised by other reviewers or where I can add deeper analysis.
HIGH — H1: Response ID = Thread UUID creates a 1:1 coupling that breaks multi-turn
encode_response_id wraps the thread UUID, meaning response_id == thread_id. In OpenAI's Responses API, each POST /v1/responses returns a new response ID even within the same conversation. Here, calling POST /v1/responses with previous_response_id decodes back to the same thread UUID and re-encodes it — so response_id never changes across turns. This means:
GET /v1/responses/{id}always returns the entire conversation, not a single response- Clients expecting per-turn responses will see all messages from all turns
- The
previous_response_idfield becomes meaningless (it decodes to the same thread)
Fix: Response IDs should be separate from thread IDs. Consider storing a per-response marker (e.g., message ID or sequence number) alongside the thread UUID in the encoded ID, or generate a separate response UUID and persist its mapping to the thread + message range.
HIGH — H2: Non-streaming handler holds SSE subscription for up to 120s
handle_non_streaming subscribes to the SSE broadcast and blocks for up to RESPONSE_TIMEOUT (120s). This holds one of the 100 total SSE connection slots (the same pool used by browser clients and WebSocket connections). A few concurrent non-streaming API calls could exhaust the connection pool, blocking the web UI.
Fix: Either use a separate event channel for API consumers that doesn't count against the SSE connection limit, or increase the limit, or document this constraint prominently.
MEDIUM — M1: tools, tool_choice, and instructions fields silently ignored
ResponsesRequest accepts tools, tool_choice, and instructions but create_response_handler never passes them to the agent loop. This is a silent contract violation — clients sending tool definitions or system prompt overrides will believe they're being used. instructions is particularly important since it's the system prompt override in the Responses API, and silently dropping it will cause hard-to-debug behavior.
Fix: Either reject requests containing these fields with a clear error (400 + "not yet supported"), or pass instructions through as a system message prepended to the content.
MEDIUM — M2: Streaming emit() silently swallows serialization failures and disconnects
The inner emit() function returns true (keep going) when serialization fails. Combined with try_send (which also silently drops on buffer full), the streaming path has no mechanism to signal data loss to the client. If the client disconnects, the worker runs until a terminal event or the 120s timeout, wasting resources.
LOW — L1: last_call_id_for returns empty string on miss
If ToolResult arrives before ToolStarted (out-of-order events), the output will have call_id: "" that can never be correlated. This affects both the live accumulator and the GET handler reconstruction paths.
LOW — L2: Incomplete status variant is dead code
ResponseStatus::Incomplete is defined but never set. Add a TODO or remove it.
LOW — L3: GET handler hardcodes model: "default"
The model used for the original request isn't persisted, so reconstruction always returns "default". OpenAI clients may key behavior on the model field.
LOW — L4: No DELETE /v1/responses/{id} endpoint
The OpenAI Responses API includes a DELETE endpoint. Fine to skip in v1, but worth documenting as a known gap.
Verdict
The compilation blockers identified by @zmanian are the primary blocker. Beyond those, the response_id == thread_id coupling (H1) is an architectural issue that will be harder to fix later, and the SSE connection pool exhaustion risk (H2) could impact production stability. I'd recommend addressing H1 and H2 alongside the compilation fixes before merge.
|
Thanks @zmanian and @serrrfirat for the thorough reviews. Addressed all feedback: Re: compilation blockers (zmanian #1-4) — After investigation, the code was actually targeting the correct types ( Fixes in this update:
Known gaps (v1): |
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Correction & Re-review: OpenAI Responses API endpoints
Mea culpa on the compilation blockers. My previous two reviews incorrectly claimed AppEvent, AuthenticatedUser, subscribe_raw(user_id), and PerUserRateLimiter::check(user_id) don't exist. They do -- they were added by recently merged PRs (#1614 TenantCtx, #1615 AppEvent extraction, #1626 user management). I verified: the branch compiles cleanly, clippy reports zero warnings, and all 14 tests pass. I apologize for the noise.
Actual issues in the code (fresh review of the real implementation):
High
-
response_idis 1:1 withthread_id:encode_response_iddoesformat!("resp_{}", thread_id.simple()). Every POST to the same thread returns the same response ID. OpenAI's API returns a unique response ID per call. This means clients can't distinguish between different responses on the same thread, and the GET endpoint returns the entire conversation history rather than a specific response. -
GET endpoint has no ownership check (
get_response_handler):_useris extracted but unused (underscore prefix).list_conversation_messages(thread_uuid)loads any conversation without verifying it belongs to the authenticated user. Cross-user data access via guessed UUID. -
instructions,tools,tool_choicesilently ignored: These fields are accepted and deserialized but never validated, rejected, or forwarded. Callers who setinstructions(system prompt override) will get unexpected behavior with no error.
Medium
-
GET always returns
Completedstatus (line 1000): Regardless of whether the conversation is still in progress, failed, or has a pending approval. -
GET
toolrole messages have emptycall_id(line 984):call_id: String::new()hardcoded. Tool results don't correlate back to their function calls. -
GET only parses legacy
Vec<Value>fortool_calls: The persistence layer can store wrapped format{ "calls": [...], "narrative": "..." }(from #1513). This parsing only triesVec<Value>, silently dropping tool calls in the wrapped format. -
created_atcomputed fresh infinish()(line 508): Each call tounix_timestamp()gets a different value. The responsecreated_atshould be captured once when the response is created, not when it completes. -
error_messageaccumulated but not surfaced:ResponseObjecthas noerrorfield. The accumulator tracks errors butfinish()doesn't include them in the output. Failed responses are indistinguishable from successful empty ones (except bystatus). -
Streaming worker ignores client disconnect:
emit()usestry_send()and continues on failure. If the client disconnects, the worker runs until timeout (120s), wasting resources.
Low
-
Incompletevariant is dead code (line 116): Defined but never constructed. Will cause clippy warnings under zero-warnings policy. -
GET hardcodes
model: "default"andusage: ResponseUsage::default(): No model or token info from persisted data. -
Streaming
ToolCompleteddoesn't handlesuccess == false: Non-streaming path correctly emitsFunctionCallOutputwith error. Streaming path only updates arguments and emitsoutput_item.done, dropping failure info.
What's good
- Clean architecture: subscribing to SSE broadcast, filtering by thread, accumulating into OpenAI format
- Proper timeout handling in both streaming and non-streaming paths
ApprovalNeededcorrectly treated as failure with descriptive message- Good test coverage for pure logic (14 tests passing)
- Streaming SSE format matches OpenAI's
response.created->response.output_text.delta->response.completedlifecycle - Rate limiting and auth properly applied
Verdict
The code compiles and the design is sound. Items 1-3 (response ID uniqueness, ownership check, silent field ignoring) should be fixed before merge. The rest can be follow-ups.
| .with_metadata(serde_json::json!({ | ||
| "thread_id": &thread_id_str, | ||
| "source": "responses_api", | ||
| })); |
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model is echoed in the response but never forwarded to the agent loop — IncomingMessage has no model field. Abound will think model selection works but the server always uses its configured LLM.
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Fixed in 08ab35e — non-"default" model values are now rejected with 400. IncomingMessage has no model field so we can't forward it; rejecting explicitly is the honest contract until model selection is wired through.
| #[serde(default)] | ||
| pub stream: Option<bool>, | ||
| #[serde(default)] | ||
| pub temperature: Option<f32>, |
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temperature and max_output_tokens are also silently ignored, same as instructions/tools/tool_choice. Reject all unsupported fields with 400 for consistency.
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Fixed in 08ab35e — temperature and max_output_tokens now also return 400, consistent with instructions/tools/tool_choice.
| }, | ||
| output: self.output, | ||
| usage: self.usage, | ||
| } |
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error_message is accumulated but finish() drops it — ResponseObject has no error field. Failed responses give Abound no diagnostic info.
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Fixed in 08ab35e — added error: Option<ResponseError> to ResponseObject, populated from accumulator error_message in finish().
- Decouple response ID from thread ID: encode both a per-call response_uuid and the thread_uuid so each POST produces a unique ID - Reject unsupported fields (instructions, tools, tool_choice, temperature, max_output_tokens, non-default model) with 400 - Add user_id to IncomingMessage metadata for user-scoped SSE events - Add conversation_belongs_to_user() ownership check on GET endpoint - Fix tool call parsing: handle both legacy array and object wrapper format; use call_id/tool_call_id/id key fallback chain - Correlate tool role messages to preceding FunctionCall call_id - Stabilize created_at (capture once in accumulator, reuse everywhere) - Surface error_message via new ResponseObject.error field - Handle streaming tool failures (emit FunctionCallOutput on error) - Remove dead Incomplete status variant - Fix formatting (cargo fmt) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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@zmanian Thanks for the thorough correction and fresh re-review. All items from your actual-issues list are addressed in 08ab35e:
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@serrrfirat All actionable items from your review are addressed in 08ab35e:
Re-requesting your review. |
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Re-review: OpenAI Responses API (post 08ab35e)
9 of 11 findings fully fixed. Nice work.
| # | Finding | Status |
|---|---|---|
| 1 | response_id uniqueness | Fixed -- UUID per call, dual-encoded |
| 2 | GET ownership check | Fixed -- conversation_belongs_to_user |
| 3 | Unsupported fields rejected | Fixed -- 400 errors for instructions/tools/tool_choice |
| 4 | GET always returns Completed | Not fixed -- hardcoded line 1214. Add a TODO. |
| 5 | GET empty call_id | Fixed -- fallback chain |
| 6 | Legacy-only tool_calls parsing | Fixed -- handles wrapped format |
| 7 | created_at drift | Fixed -- captured once at construction |
| 8 | error_message not surfaced | Fixed -- ResponseError on ResponseObject |
| 9 | Streaming disconnect handling | Partially fixed -- initial emit only; main loop still runs on disconnect |
| 10 | Incomplete dead code | Fixed -- removed |
| 11 | Streaming tool failure | Fixed -- emits FunctionCallOutput with error |
Remaining items are medium/low and can be follow-ups. Approve.
* feat(gateway): add OpenAI Responses API endpoints
Add POST /v1/responses and GET /v1/responses/{id} to the web gateway,
implementing the OpenAI Responses API. Unlike the existing Chat
Completions proxy which passes through to the raw LLM, the Responses
API routes requests through the full agent loop — giving external
clients access to tools, memory, safety, and server-side conversation
state via a standard OpenAI-compatible interface.
Key design decisions:
- Response IDs encode thread UUIDs statelessly (resp_{uuid_simple})
- previous_response_id enables multi-turn conversations
- Streaming maps AppEvent variants to Responses API SSE events
- Tool approval returns response.failed (no interactive approval flow)
- GET endpoint reconstructs ResponseObject from conversation_messages
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(responses-api): address all review feedback on PR nearai#1656
- Decouple response ID from thread ID: encode both a per-call
response_uuid and the thread_uuid so each POST produces a unique ID
- Reject unsupported fields (instructions, tools, tool_choice,
temperature, max_output_tokens, non-default model) with 400
- Add user_id to IncomingMessage metadata for user-scoped SSE events
- Add conversation_belongs_to_user() ownership check on GET endpoint
- Fix tool call parsing: handle both legacy array and object wrapper
format; use call_id/tool_call_id/id key fallback chain
- Correlate tool role messages to preceding FunctionCall call_id
- Stabilize created_at (capture once in accumulator, reuse everywhere)
- Surface error_message via new ResponseObject.error field
- Handle streaming tool failures (emit FunctionCallOutput on error)
- Remove dead Incomplete status variant
- Fix formatting (cargo fmt)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat(gateway): add OpenAI Responses API endpoints
Add POST /v1/responses and GET /v1/responses/{id} to the web gateway,
implementing the OpenAI Responses API. Unlike the existing Chat
Completions proxy which passes through to the raw LLM, the Responses
API routes requests through the full agent loop — giving external
clients access to tools, memory, safety, and server-side conversation
state via a standard OpenAI-compatible interface.
Key design decisions:
- Response IDs encode thread UUIDs statelessly (resp_{uuid_simple})
- previous_response_id enables multi-turn conversations
- Streaming maps AppEvent variants to Responses API SSE events
- Tool approval returns response.failed (no interactive approval flow)
- GET endpoint reconstructs ResponseObject from conversation_messages
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(responses-api): address all review feedback on PR nearai#1656
- Decouple response ID from thread ID: encode both a per-call
response_uuid and the thread_uuid so each POST produces a unique ID
- Reject unsupported fields (instructions, tools, tool_choice,
temperature, max_output_tokens, non-default model) with 400
- Add user_id to IncomingMessage metadata for user-scoped SSE events
- Add conversation_belongs_to_user() ownership check on GET endpoint
- Fix tool call parsing: handle both legacy array and object wrapper
format; use call_id/tool_call_id/id key fallback chain
- Correlate tool role messages to preceding FunctionCall call_id
- Stabilize created_at (capture once in accumulator, reuse everywhere)
- Surface error_message via new ResponseObject.error field
- Handle streaming tool failures (emit FunctionCallOutput on error)
- Remove dead Incomplete status variant
- Fix formatting (cargo fmt)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Summary
POST /v1/responsesandGET /v1/responses/{id}to the web gateway implementing the OpenAI Responses API/v1/chat/completions(raw LLM proxy), this routes through the full agent loop — tools, memory, safety, and server-side conversation stateclient.responses.create()) to interact with IronClaw as an agentDesign decisions
resp_{uuid_simple}— stateless encoding of thread UUIDs, no lookup tableprevious_response_iddecoded to thread UUID, enabling conversation continuityAppEventSSE broadcast, filters by thread, maps to Responses API event types (response.created,response.output_text.delta,response.output_item.added/done,response.completed)response.failedsince Responses API has no interactive approval flowResponseObjectfromconversation_messagesin DBFiles changed
src/channels/web/responses_api.rs— types, handlers, event mapping, 14 unit testssrc/channels/web/mod.rs— module declarationsrc/channels/web/server.rs— route registrationTest plan
cargo clippy --all --all-features— zero warningscargo test responses_api— 14/14 passstream: false, verify ResponseObject shapestream: true, verify SSE eventsprevious_response_id/v1/responses/{id}retrieves historical response🤖 Generated with Claude Code