Conduct, open-source guardrails for LLM and MCP tool calls
Details
- External ID
- 49483173
- Source
- HN
- Company
- —
- Product
- Conduct, open-source guardrails for LLM and MCP tool calls
- Website domain
- github.com
- Launched
- Aug. 28, 2026
- Cohort
- —
- Upvotes
- 22
- Upvotes percentile
- 0.7647849462365591
- Tags
- —
- Fetched at
- Sept. 10, 2026, 5:31 a.m.
- Updated at
- Sept. 10, 2026, 5:31 a.m.
Enrichment
- Theme
- ML inference and model optimization
- Vertical
- Horizontal
- Function
- Compliance & governance
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Hobby / open-source project
- Normalized one-liner
- guardrails for llm and mcp tool calls
- Manually corrected
- False
Could you build this?
Yes It is an open-source proxy/interceptor middleware that validates JSON tool call schemas and MCP requests against configured safety rules.
Discussion
4 comments analyzed.
Competitors mentioned: agentjail (OPA-backed policy guardrails with sandbox), coding-tools crate (lighter harness for tool calls)
Concerns raised: Agents leaking credentials to LLM providers, Prompt injection attacks, Out-of-policy tool calls reaching providers
Competitors
Other products that read as similar to this one — 374 launches clear the similarity bar, closest 8 shown.
Attention rank: #85 of 375 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 302 days after the earliest competitor.
- Otari: your open-source LLM control plane · hn · 2026-07-06 · 20 upvotes · similarity 0.59
- Sentrint, a security scanner for projects build with LLMs · hn · 2026-08-20 · 6 upvotes · similarity 0.57
- Sub-Agent MCP: LLM delegation and sub-agent orchestration via MCP · hn · 2026-06-06 · 6 upvotes · similarity 0.47
- Architectural Guardrails for AI native development · hn · 2026-09-20 · 5 upvotes · similarity 0.46
- Retroguard · hn · 2026-05-05 · 6 upvotes · similarity 0.46
- Tokensift, an open-sourced token-efficiency linter for LLM prompts · hn · 2026-08-29 · 6 upvotes · similarity 0.46
- open-transformers · github · 2026-09-15 · 11 upvotes · similarity 0.46
- Wafer Pass: flat-rate access to the fastest open-source LLMs · yc · 2026-04-30 · 7 upvotes · similarity 0.45
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a compliance & governance tool for Media & entertainment yet.