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Agents: validate persisted tool-call names

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This commit is contained in:
Vignesh Natarajan
2026-02-21 23:06:44 -08:00
parent 29a782b9cd
commit cdfe45eeb8
11 changed files with 248 additions and 8 deletions
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9
src/agents/session-tool-result-guard.ts
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@@ -96,6 +96,11 @@ export function installSessionToolResultGuard(
* Defaults to true.
*/
allowSyntheticToolResults?: boolean;
/**
* Optional set/list of tool names accepted for assistant toolCall/toolUse blocks.
* When set, tool calls with unknown names are dropped before persistence.
*/
allowedToolNames?: Iterable<string>;
/**
* Synchronous hook invoked before any message is written to the session JSONL.
* If the hook returns { block: true }, the message is silently dropped.
@@ -171,7 +176,9 @@ export function installSessionToolResultGuard(
let nextMessage = message;
const role = (message as { role?: unknown }).role;
if (role === "assistant") {
const sanitized = sanitizeToolCallInputs([message]);
const sanitized = sanitizeToolCallInputs([message], {
allowedToolNames: opts?.allowedToolNames,
});
if (sanitized.length === 0) {
if (allowSyntheticToolResults && pending.size > 0) {
flushPendingToolResults();