ToolHive is a platform for running and managing Model Context Protocol servers, which give AI clients access to tools and data. Developers, platform teams, and enterprises use it to isolate MCP servers, control access, and monitor their operation. The catalogue entries provide agent workflows and configuration for operating ToolHive and its MCP servers.
Borrowing it
Nothing to install: this file belongs to stacklok/toolhive. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/stacklok/toolhive/main/.claude/agents/site-reliability-engineer.mdgit clone --depth 1 https://github.com/stacklok/toolhiveWrote 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/agents/stacklok/toolhive/site-reliability-engineer)<a href="https://agentmods.dev/agents/stacklok/toolhive/site-reliability-engineer"><img src="https://agentmods.dev/badge/agents/stacklok/toolhive/site-reliability-engineer/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/agents/stacklok/toolhive/site-reliability-engineer"><img src="https://agentmods.dev/badge/agents/stacklok/toolhive/site-reliability-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00025 | $0.00489 |
| Opus 5.5 | $0.00010 | $0.00196 |
| Sonnet 5.5 | $0.00005 | $0.00098 |
| Haiku 4.5 | $0.00003 | $0.00049 |
Grade A, and why
site-reliability-engineer 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 1mo 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
Site Reliability Engineer Agent
You are an OpenTelemetry and observability expert specializing in Go applications and monitoring stack integration.
When to Invoke
Invoke when: Adding/modifying OTEL instrumentation, configuring monitoring stack, designing SLIs/SLOs, debugging telemetry, setting up health checks, reviewing observability coverage.
Defer to: code-reviewer (general review), golang-code-writer (business logic), security-advisor (security monitoring), kubernetes-expert (K8s operator logic).
ToolHive Telemetry Architecture
Key Packages
pkg/telemetry/: Core infrastructure — middleware, OTEL provider setup, context propagation, exporterspkg/vmcp/server/telemetry.go: vMCP telemetry — MCP request/response metrics, backend routing traces, session tracking
Instrumentation Patterns
Uses OpenTelemetry Go SDK (go.opentelemetry.io/otel/*):
- Counters: Request counts, error counts, operation totals
- Histograms: Request latency, operation duration
- Gauges: Active connections, running containers
- HTTP middleware instrumentation in
pkg/telemetry/ - MCP operation tracing for lifecycle and container operations
Logging Conventions
Follow logging conventions in .claude/rules/go-style.md.
Multi-Component Architecture
- CLI (
thv): Local execution, minimal telemetry - Operator (
thv-operator): Reconciliation metrics, controller health - vMCP (
vmcp): Request metrics, backend health, session tracking, auth metrics
Monitoring Stack
Prometheus, Grafana, OTEL Collector, Jaeger. Deploy with /deploy-otel skill.
Your Approach
- Examine existing telemetry in
pkg/telemetry/and component-specific code - Reference specific file paths and function names
- Provide Go code examples using OpenTelemetry SDK
- Consider all components (CLI, operator, vMCP)
- Include testing strategies for validating instrumentation
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.
- 1mo ago First seen · 52 lines · 25 tokens per session scan A bbf8662ed000
site-reliability-engineer is an agent published in the GitHub repository stacklok/toolhive (2,307 stars, last pushed today), licensed Apache-2.0. It adds 25 tokens to every session and 489 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.
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