Files
clawdbot/patches/@mariozechner__pi-coding-agent.patch
Muhammed Mukhthar CM 1cfe409a09 fix: filter empty error messages to prevent session corruption
When 429/500 errors occur during tool execution, empty assistant messages
with stopReason='error' and content=[] get persisted to the session file.

These break the tool_use -> tool_result chain that Claude/Gemini require:
- Claude expects every tool_use block to have a matching tool_result
- Empty error messages inserted mid-sequence violate this invariant
- Results in: 'tool_use ids were found without tool_result blocks'

This patch filters out empty error messages when building session context,
allowing sessions to recover gracefully from transient API errors.

Evidence from production:
- 113 of 170 sessions had empty error messages
- Session 30764430 demonstrated recovery: 429 at 14:30:11 IST,
  resumed successfully at 14:30:22, completed at 14:30:34

Sorry Peter, one more patch! 🙈
2026-01-09 18:10:23 +01:00

49 lines
2.1 KiB
Diff

diff --git a/dist/core/sdk.js b/dist/core/sdk.js
index 0000000..1111111 100644
--- a/dist/core/sdk.js
+++ b/dist/core/sdk.js
@@ -441,6 +441,8 @@ export async function createAgentSession(options = {}) {
}
return key;
},
+ // PATCH: Pass extraParams through for provider-specific features (e.g., GLM-4.7 thinking mode)
+ extraParams: options.extraParams,
});
time("createAgent");
// Restore messages if session has existing data
diff --git a/dist/core/sdk.d.ts b/dist/core/sdk.d.ts
index 0000000..1111111 100644
--- a/dist/core/sdk.d.ts
+++ b/dist/core/sdk.d.ts
@@ -79,6 +79,10 @@ export interface CreateAgentSessionOptions {
sessionManager?: SessionManager;
/** Settings manager. Default: SettingsManager.create(cwd, agentDir) */
settingsManager?: SettingsManager;
+ /**
+ * Extra params to pass to the provider API (e.g., Z.AI GLM thinking mode params).
+ */
+ extraParams?: Record<string, unknown>;
}
/** Result from createAgentSession */
export interface CreateAgentSessionResult {
diff --git a/dist/core/session-manager.js b/dist/core/session-manager.js
index b2aba5280d002253b0938b75aedbb9e6e6c4dcf8..67464efff535dbd7a8e6ed825aab2b305ca2aee2 100644
--- a/dist/core/session-manager.js
+++ b/dist/core/session-manager.js
@@ -161,6 +161,15 @@ export function buildSessionContext(entries, leafId, byId) {
const messages = [];
const appendMessage = (entry) => {
if (entry.type === "message") {
+ // PATCH: Filter out empty error assistant messages to prevent session corruption
+ // When 429/500 errors occur during tool execution, empty error messages get persisted
+ // to the session file. These break the tool_use -> tool_result chain for Claude/Gemini.
+ const msg = entry.message;
+ if (msg.role === "assistant" &&
+ msg.stopReason === "error" &&
+ (!msg.content || msg.content.length === 0)) {
+ return; // Skip empty error messages
+ }
messages.push(entry.message);
}
else if (entry.type === "custom_message") {