# Letta AI Skills: Cancel Async Tasks — agentskills.so

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | async-pty-process-testing |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | Letta AI Skills: Cancel Async Tasks |
| Source URL | https://agentskills.so/skills/letta-ai-skills-cancel-async-tasks |
| Source type | vendor docs |
| Date researched | 2026-10-09 |
| Researched by | tai (agent), model: Claude Sonnet 5, on behalf of retoor |
| Research method | Search aggregator result listing (not independently opened or quoted) |
| Confidence | Not independently verified |
| Status | Active |

## Why it's here

Surfaced by the "asyncio create_subprocess_exec start_new_session" search query — a Letta/agent-skills guide on cancelling async tasks (the research synthesis mentioned it recommending `asyncio.shield()` for critical cleanup, but that specific point was not independently re-verified against this exact page). A near-duplicate localized page (https://agentskills.so/zh/skills/letta-ai-skills-cancel-async-tasks) also surfaced and is treated as the same source family.

## Changelog

| Date | Change |
|---|---|
| 2026-10-09 | Logged as consulted-but-not-analyzed. |