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openclaw - 💡(How to fix) Fix Discord: Thread context lost on gateway restart — no ThreadHistoryBody parity with Slack [3 comments, 4 participants]

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openclaw/openclaw#52112•Fetched 2026-04-08 01:15:29
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When the OpenClaw gateway restarts, Discord thread sessions lose all prior conversation context. Each restart creates a new session file for the same thread, with only the ThreadStarterBody (the very first message) injected — not the recent conversation history. This causes the LLM to lose track of ongoing discussions and produce incorrect/incomplete responses.

Slack already solves this with resolveSlackThreadHistory() which fetches prior thread messages from the Slack API and injects them as ThreadHistoryBody. Discord has no equivalent — ThreadHistoryBody is never set.

Root Cause

When the OpenClaw gateway restarts, Discord thread sessions lose all prior conversation context. Each restart creates a new session file for the same thread, with only the ThreadStarterBody (the very first message) injected — not the recent conversation history. This causes the LLM to lose track of ongoing discussions and produce incorrect/incomplete responses.

Slack already solves this with resolveSlackThreadHistory() which fetches prior thread messages from the Slack API and injects them as ThreadHistoryBody. Discord has no equivalent — ThreadHistoryBody is never set.

Fix Action

Fix / Workaround

  • Each gateway restart creates a new .jsonl session file per thread. In testing, a single thread accumulated 14 separate session files across restarts, each losing all prior context.
  • A behavioral workaround (SOUL.md rule to use sessions_history) partially helps but is unreliable.
  • The contextPruning and keepLastAssistants settings help within a single session but do not survive session recreation.
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Summary

When the OpenClaw gateway restarts, Discord thread sessions lose all prior conversation context. Each restart creates a new session file for the same thread, with only the ThreadStarterBody (the very first message) injected — not the recent conversation history. This causes the LLM to lose track of ongoing discussions and produce incorrect/incomplete responses.

Slack already solves this with resolveSlackThreadHistory() which fetches prior thread messages from the Slack API and injects them as ThreadHistoryBody. Discord has no equivalent — ThreadHistoryBody is never set.

Steps to Reproduce

  1. Start a conversation in a Discord thread (multiple back-and-forth messages)
  2. Restart the gateway (systemctl restart openclaw-gateway)
  3. Send a follow-up message in the same thread referencing a prior proposal
  4. Observe: the LLM has no memory of the prior conversation

Evidence

  • ThreadStarterBody is set in the Discord plugin code
  • ThreadHistoryBody is never set for Discord (only for Slack via resolveSlackThreadHistory)
  • The Discord plugin has the API capability: readMessagesDiscord() exists
  • Slack implementation fetches the last N thread messages and formats them into ThreadHistoryBody

Expected Behavior

When a new session is created for an existing Discord thread, the gateway should:

  1. Detect that this thread has prior message history
  2. Fetch the last N messages (configurable via thread.initialHistoryLimit, default 20)
  3. Format them as ThreadHistoryBody and inject into the session context
  4. Match the existing Slack behavior in resolveSlackThreadContextData()

Additional Context

  • Each gateway restart creates a new .jsonl session file per thread. In testing, a single thread accumulated 14 separate session files across restarts, each losing all prior context.
  • A behavioral workaround (SOUL.md rule to use sessions_history) partially helps but is unreliable.
  • The contextPruning and keepLastAssistants settings help within a single session but do not survive session recreation.

Environment

  • OpenClaw v2026.3.13
  • Discord plugin (built-in)
  • Ubuntu 24.04, Node 22.22.0

extent analysis

Fix Plan

To resolve the issue of losing conversation context in Discord threads after gateway restarts, we need to implement a function similar to resolveSlackThreadHistory() for Discord. This function will fetch prior thread messages from the Discord API and inject them as ThreadHistoryBody.

Steps to Implement the Fix

  • Create a new function resolveDiscordThreadHistory() in the Discord plugin code.
  • Use the existing readMessagesDiscord() API capability to fetch the last N messages from the thread.
  • Format the fetched messages into ThreadHistoryBody and inject it into the session context.

Example Code

// discord-plugin.js
async function resolveDiscordThreadHistory(threadId, limit = 20) {
  const messages = await readMessagesDiscord(threadId, limit);
  const threadHistoryBody = messages.map(message => `${message.author}: ${message.content}`).join('\n');
  return threadHistoryBody;
}

// Update the session creation logic to call resolveDiscordThreadHistory()
async function createSession(threadId) {
  const threadHistoryBody = await resolveDiscordThreadHistory(threadId);
  const session = {
    threadId,
    threadStarterBody: '...', // existing logic to set threadStarterBody
    threadHistoryBody,
  };
  // ... existing logic to save the session
}

Verification

To verify that the fix worked, follow these steps:

  • Restart the gateway.
  • Send a follow-up message in a Discord thread that had prior conversation history.
  • Check if the LLM responds correctly, taking into account the prior conversation history.

Extra Tips

  • Make sure to handle errors and edge cases when fetching messages from the Discord API.
  • Consider implementing a caching mechanism to store the fetched messages to avoid repeated API calls.
  • Update the thread.initialHistoryLimit configuration option to control the number of messages fetched from the Discord API.

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#api#conversation history#memory leak#API versioning#request timeout

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openclaw - 💡(How to fix) Fix Discord: Thread context lost on gateway restart — no ThreadHistoryBody parity with Slack [3 comments, 4 participants]