DingTalk Structured User Mentions

Date: 2026-07-22

Baseline reproduction

Using Qwen Code 0.20.1 with a DingTalk Stream channel, send a group message that mentions the bot and one other member. DingTalk delivers two entries in atUsers, removes both visible names from text.content, and the current adapter forwards only the remaining text to the model. With debug payload logging enabled, the nested dingtalkId and staffId values are also logged without redaction.

Use anonymized identifiers in all captured evidence. Do not commit real group, user, staff, message, webhook, or application identifiers.

Verification

Send @Bot please review this @Member in a test group.
Confirm the inbound model text starts with [Mentioned 1 other group member] followed by please review this.
Confirm the bot's own atUsers entry is excluded and duplicate member entries are counted once.
Send @Bot hello and confirm no additional mention context is added.
Enable QWEN_CHANNEL_DEBUG_PAYLOAD for the test channel and confirm atUsers[].dingtalkId and atUsers[].staffId appear as [redacted] while routing fields needed for diagnostics remain visible.

Automated coverage

cd packages/channels/dingtalk && npx vitest run src/DingtalkAdapter.test.ts
cd packages/channels/base && npx vitest run src/ChannelBase.test.ts
npm run typecheck
git diff --check