Agent-watchdog
Runtime loop detection for LangGraph agents
Details
- External ID
- 1249699
- Source
- PH
- Company
- —
- Product
- Agent-watchdog
- Website domain
- producthunt.com
- Launched
- Sept. 21, 2026
- Cohort
- —
- Upvotes
- 2
- Upvotes percentile
- 0.7405388069275176
- Tags
- Developer Tools, Artificial Intelligence
- Fetched at
- Sept. 21, 2026, 5 p.m.
- Updated at
- Sept. 21, 2026, 5 p.m.
Description
Multi-agent LLM pipelines fail quietly — agents rephrasing the same argument forever, silent deadlocks, graphs that cycle without an exit. Most tools (LangSmith, AgentOps) show you this after the fact. Agent Watchdog intervenes at runtime, like a circuit breaker — watching message similarity and tool-call patterns to halt stuck LangGraph runs before you burn tokens. Built by PengKernel LLC: npm install agent-watchdog.
Enrichment
- Theme
- AI agent frameworks and developer tools
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Hobby / open-source project
- Normalized one-liner
- runtime loop detection tool for langgraph agents
- Manually corrected
- False
Could you build this?
Yes The tool is a lightweight Python/TypeScript middleware wrapper or LangGraph callback that tracks message history, calculates cosine similarity on embeddings, and interrupts graph execution if a loop threshold is exceeded.
Competitors
Other products that read as similar to this one — 201 launches clear the similarity bar, closest 8 shown.
Attention rank: #48 of 202 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 300 days after the earliest competitor.
- AgentWatch · hn · 2026-06-28 · 7 upvotes · similarity 0.49
- Agentwall · ph · 2026-09-09 · 2 upvotes · similarity 0.45
- Agent-contracts, contract-based LangGraph agents · hn · 2026-01-09 · 8 upvotes · similarity 0.44
- Reflexes API: Catch what agent logs miss · yc · 2026-06-27 · 5 upvotes · similarity 0.43
- LazyAgent · hn · 2026-04-23 · 6 upvotes · similarity 0.43
- Doberman: The AI watchdog that stops Claude from deleting your database · hn · 2026-08-17 · 9 upvotes · similarity 0.42
- /monitor by Firecrawl · ph · 2026-05-29 · 356 upvotes · similarity 0.42
- Lazyagent · hn · 2026-04-15 · 8 upvotes · similarity 0.42
Other launches for this product
- No other launches for this product.
Same idea, different domain
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