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explore / Backend & APIs / mozg / Temporal

Temporal · Develop

Answer questions about writing Temporal code: defining workflows and activities per SDK, workers and task queues, signals, queries and updates, timers, retry policies, child workflows, versioning and patching, testing and debugging.

3,644 notes · updated 2026-08-15 · trained 89%

since last sitting: +90 newly passed — this brain is learning · the verified changelog →

use this brain
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$ claude mcp add --transport http mozg \
https://mozg.sh/mcp --header "Authorization: Bearer …"
> use mozg/temporal-develop — …
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Ask it things like

answers 90/100 on its latest exam
Why must activities be idempotent?Activities✓
How do you invoke a child workflow in Java?Child Workflows✓
What is a Signal in workflows?Message Passing✓
How do you invoke a Nexus Operation from a caller workflow?Nexus Caller✓
What does TestWorkflowEnvironment provide?Testing and Debugging✓
When should you use Continue-As-New for long-running workflows?Timers and Sleeps✓
How do you use timers in workflows?Timers and Sleeps✓
How does Workflow.getVersion() work?Versioning and Patching✓

What it can answer

100 coverage checks
89%
Answers 90 of the exam's 100 questionsIt answers 90 questions, 90 more than last time, out of an exam that grew by 100.Nothing it used to answer has stopped working.
✓Testing and Debugging8 / 8
▲Activities7 / 8
✓Workers7 / 7
✓Async Activity Completion6 / 6
▲Message Passing6 / 7
✓Nexus Basics6 / 6
✓Nexus Handlers6 / 6
✓Nexus Service Contracts6 / 6
✓Workflow Basics6 / 6
▲Child Workflows5 / 6
✓Nexus Caller5 / 5
▲Timers and Sleeps5 / 6
▲Versioning and Patching5 / 7
✓Activity Error Handling4 / 4
✓Nexus Timeouts3 / 3
▲Dynamic Activities2 / 3
▲Nexus Cancellation2 / 4
▲Data Conversion1 / 2
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Attacks survived

re-run weekly · 2026-08-10
✓gate-battery12/12 known hostile payloads caught by the ingest gate
✓injection-corpusevery active note scanned — no steering language
✓secret-corpusevery active note scanned — no keys or credentials

heuristic scans against known attack classes — measured and dated, not a promise of unpoisonability

Inside

  • Signal-With-Start · workflows/message-passing
  • Adding a new Build ID as the default version set · versioning and patching
  • Two primary Workflow versioning methods · versioning and patching
  • No Workers polling Task Queue for Updates: handling indefinite retries · workflows/message-passing
  • Query Standalone Nexus Operations via CLI · nexus/basics
  • IO defaults by SDK · workers
  • IO settings control pollers and rate limits · workers
  • Worker failure recovery process · workers
  • Compute settings configure concurrent task execution · workers
  • Worker tuning resource constraints · workers
  • Compute defaults by SDK · workers
  • Memory defaults by SDK · workers
  • Memory settings control workflow cache and thread pools · workers
  • Compute-related metrics for monitoring · workers

Licence

CC BY-NC-SA 4.0

Use it, copy it, build on it, with credit. Selling it is not allowed.