awslabs/agent-plugins is a collection of plugins, skills, instructions, an MCP server, a hook, and a setting that guide AI coding agents in architecting, deploying, and operating software on Amazon Web Services. It is for developers using coding agents such as Claude Code, Codex, and Cursor with AWS projects. The catalogue entries are the repository's own agent workflows and supporting components.
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.
npx skills add awslabs/agent-plugins --skill aws-lambda-managed-instancesgit clone --depth 1 https://github.com/awslabs/agent-pluginsWrote 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/skills/awslabs/agent-plugins/aws-lambda-managed-instances)<a href="https://agentmods.dev/skills/awslabs/agent-plugins/aws-lambda-managed-instances"><img src="https://agentmods.dev/badge/skills/awslabs/agent-plugins/aws-lambda-managed-instances/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/skills/awslabs/agent-plugins/aws-lambda-managed-instances"><img src="https://agentmods.dev/badge/skills/awslabs/agent-plugins/aws-lambda-managed-instances.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00130 | $0.03383 |
| Opus 5.5 | $0.00052 | $0.01353 |
| Sonnet 5.5 | $0.00026 | $0.00677 |
| Haiku 4.5 | $0.00013 | $0.00338 |
Grade A, and why
aws-lambda-managed-instances 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.
How it starts
The opening of the file, as written. The whole thing — 258 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AWS Lambda Managed Instances (LMI)
Run Lambda functions on current-generation EC2 instances in your account while AWS manages provisioning, patching, scaling, routing, and load balancing. Combines Lambda's developer experience with EC2's pricing and hardware options.
For standard Lambda development, see aws-lambda skill. For SAM/CDK deployment, see aws-serverless-deployment skill.
When to Load Reference Files
- Cost comparison, pricing analysis, Lambda vs LMI cost, Savings Plans, or Reserved Instances -> see references/cost-comparison.md
- Instance types, memory sizing, vCPU ratios, scaling tuning, scheduled scaling, or capacity provider config -> see references/configuration-guide.md
- Thread safety, concurrency model, code review checklist, Powertools compatibility, or multi-concurrency readiness -> see references/thread-safety.md
- Before/after code examples, runtime-specific migration (Node.js, Python, Java, .NET), or connection pooling -> see references/migration-patterns.md
- IAM roles, VPC setup, CLI commands, SAM template, CDK example, or scheduled scaling setup (EventBridge Scheduler) -> see references/infrastructure-setup.md and scripts/setup-lmi.sh
- Errors, throttling, debugging, stuck deployments, tuning configuration, or adjusting after deployment -> see references/troubleshooting.md
Quick Decision: Is LMI Right for This Workload?
| Signal | LMI is a strong fit | Standard Lambda is better |
|---|---|---|
| Traffic | Steady, predictable, 50M+ req/mo | Bursty, unpredictable, long idle |
| Cost | Duration-heavy spend at scale | Low or sporadic invocations |
| Cold starts | Unacceptable (LMI eliminates for provisioned capacity; scale-out may have brief delays) | Tolerable or mitigated by SnapStart |
| Compute | Latest CPUs, specific families, high network bandwidth | Standard Lambda memory/CPU sufficient |
| Isolation | Dedicated EC2 instances in your account, full VPC control | Shared Firecracker micro-VMs acceptable |
| Scale-to-zero | Not needed (execution environments always running) | Required (pay nothing when idle) |
| Code readiness | Thread-safe (Node.js/Java/.NET) or any Python code | Non-thread-safe Node.js/Java/.NET, expensive to change |
What ships with it
7 files beside SKILL.md 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.
- 1mo ago First seen · 258 lines · 130 tokens per session scan A d512c801d15a
aws-lambda-managed-instances is a skill published in the GitHub repository awslabs/agent-plugins (921 stars, last pushed yesterday), licensed Apache-2.0. It adds 130 tokens to every session and 3,383 once invoked, about $0.0005 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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