Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/nexus-labs-automation/agent-observabilityWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/plugins/nexus-labs-automation/agent-observability/marketplace)<a href="https://agentmods.dev/plugins/nexus-labs-automation/agent-observability/marketplace"><img src="https://agentmods.dev/badge/plugins/nexus-labs-automation/agent-observability/marketplace/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/plugins/nexus-labs-automation/agent-observability/marketplace"><img src="https://agentmods.dev/badge/plugins/nexus-labs-automation/agent-observability/marketplace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
agent-observability marketplace scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
{
"name": "agent-observability",
"displayName": "Agent Observability",
"description": "Expert guidance for instrumenting AI agents in production. Covers LLM call tracing, multi-agent coordination, tool execution, token/cost tracking, and evaluation quality.",
"categories": ["observability", "ai", "agents", "llm", "tracing"],
"platforms": [
"langchain",
"langgraph",
"claude-agent-sdk",
"openai-agents-sdk",
"crewai",
"autogen",
"semantic-kernel",
"haystack",
"custom"
],
"vendors": [
"langfuse",
"langsmith",
"arize-phoenix",
"weave",
"helicone",
"braintrust",
"datadog-llm",
"opentelemetry"
],
"features": [
"LLM call tracing with token/latency tracking",
"Multi-agent workflow instrumentation",
"Tool call monitoring and error handling",
"Token and cost tracking per agent/session",
"RAG and memory retrieval instrumentation",
"Human-in-the-loop workflow tracking",
"Evaluation and quality metrics",
"Anti-pattern detection hooks"
],
"skills": 10,
"agents": 2,
"commands": 2
}
The plugins it lists here
This marketplace lists 1 plugin kept in the same repository. Each has its own page, its own measurements and its own install command.
What ships with it
1 file beside marketplace.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 41 lines scan A 7fd5649bccfb
agent-observability marketplace is a plugin published in the GitHub repository nexus-labs-automation/agent-observability (7 stars, last pushed 10mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
agent-observability marketplace compared with plugins from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| agent-observability marketplacenexus-labs-automation/agent-observability | Plugin | 7 | 10mo ago | MIT | A | — | Claude Code |
| humanizerblader/humanizer | Plugin | 65k | 10d ago | MIT | A | — | Claude Code |
| claude-plugins-official marketplaceanthropics/claude-plugins-official | Plugin | 46k | yesterday | Apache-2.0 | A | — | Claude Code |
| nextjsvercel/next.js | Plugin | 143k | yesterday | MIT | A | — | Claude Code |
| themes-examplegoogle-gemini/gemini-cli | Plugin | 109k | yesterday | Apache-2.0 | A | — | Gemini CLI |
| knowledge-work-plugins marketplaceanthropics/knowledge-work-plugins | Plugin | 35k | 3d ago | Apache-2.0 | A | — | Claude Code |
| code-modernizationanthropics/claude-plugins-official | Plugin | 46k | yesterday | Apache-2.0 | A | — | Claude Code |