fetch-context

name	fetch-context
description	Fetch additional context from the platform, including recent messages, search through conversation history, or get user information. Use when you need more context than what's provided initially.
allowed-tools	Bash

Fetch Context Skill

Retrieve additional context from the platform to better understand the conversation.

Usage

The search_messages query is OPTIONAL per type. When present, it MUST NOT appear on the command line — use the two-step payload-file flow:

1. Write the query text to a payload file under the session staging directory using your edit/write tool:

   $TMPDIR/$SESSION_ID/query.md
   

   The $TMPDIR / $SESSION_ID tokens in that path are expanded by the ACP path boundary, so the write is approved and the text bytes are preserved verbatim (no shell expansion). $TMPDIR/$SESSION_ID/ is the per-spawn form of the staging directory; in shared-process deployments the staging directory is shown in your system prompt and the script resolves it automatically.

2. Invoke the script with the payload file path:

   # Get recent messages
   ${HOME}/.agents/skills/fetch-context/scripts/fetch-context.ts \
     --session-id "$SESSION_ID" \
     --type recent_messages \
     --limit 20
   
   # Search messages
   ${HOME}/.agents/skills/fetch-context/scripts/fetch-context.ts \
     --session-id "$SESSION_ID" \
     --type search_messages \
     --query-file "$TMPDIR/$SESSION_ID/query.md" \
     --limit 10
   

WARNING: Never put the query on the command line. The legacy --query "..." / --query=... flag is REMOVED: the shell expands $VAR in it, which corrupts the search and can leak environment variables.

Available Types

• recent_messages: Get more recent message history (no query needed)
• search_messages: Search for messages by keyword (query passed via --query-file)
• user_info: Get information about the current user

Error Codes

If the script fails, read the JSON error on stderr. It contains the fix. Common codes: SKILL_LEGACY_FLAG (you used the removed --query flag — stage the text in $TMPDIR/$SESSION_ID/query.md and use --query-file), SKILL_PAYLOAD_OUT_OF_BOUNDS (payload path outside $TMPDIR/$SESSION_ID/), SKILL_PAYLOAD_NOT_FOUND (payload file not written yet — write it first with the edit/write tool).

Critical Rules

1. Timeout: The script won't run for more than 30 seconds. If it hangs, do stop_bash and do not retry, return an error message in JSON format.