Agent Toolkit for AWS is a collection of AWS-supported MCP servers, skills, plugins, commands, and hooks that help AI coding agents build, deploy, and manage applications on AWS. It is used by developers working with AWS services through agents such as Claude Code, Codex, Cursor, and Kiro. The catalogue entries are the toolkit's own agent extensions for AWS development and operations.
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 aws/agent-toolkit-for-aws --skill troubleshooting-efsgit clone --depth 1 https://github.com/aws/agent-toolkit-for-awsWrote 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/aws/agent-toolkit-for-aws/troubleshooting-efs)<a href="https://agentmods.dev/skills/aws/agent-toolkit-for-aws/troubleshooting-efs"><img src="https://agentmods.dev/badge/skills/aws/agent-toolkit-for-aws/troubleshooting-efs/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/aws/agent-toolkit-for-aws/troubleshooting-efs"><img src="https://agentmods.dev/badge/skills/aws/agent-toolkit-for-aws/troubleshooting-efs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Privilege Escalation · line 48 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 53 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 164 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 50 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
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 | $0.00060 | $0.01623 |
| Opus 5 | $0.00030 | $0.00812 |
| Sonnet 5 | $0.00012 | $0.00325 |
| Haiku 4.5 | $0.00006 | $0.00162 |
Grade B, and why
troubleshooting-efs scanned grade B with 1 finding 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 6d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo yum -y install amazon-efs-utils # preferred (includes mount helper + TLS) How it starts
The opening of the file, as written. The whole thing — 179 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Troubleshooting EFS
Overview
Domain expertise for diagnosing and resolving Amazon EFS issues. Covers mount failures, NFS connectivity, IAM and POSIX permissions, throughput and performance, and encryption problems.
For authoritative guidance, see EFS Troubleshooting.
Common Tasks
0. Verify Dependencies
- You MUST verify
awsCLI is available - You MUST check if
amazon-efs-utilsornfs-utilsis installed on the instance - You MUST ONLY check for tool existence and version — MUST NOT execute destructive or mutating commands during verification
- You MUST inform the user if any required tools are missing
- You MUST respect the user's decision to abort if tools are unavailable
- You SHOULD explain what each step does and why before executing it
- You SHOULD display write commands and wait for user confirmation before executing
1. Classify the Issue
| Symptom | Category |
|---|---|
| "wrong fs type" or mount command fails | A: Missing NFS Client |
| Connection timed out (hangs 2+ min) | B: Network/Security Group |
| "access denied by server" | C: IAM/Permissions |
| Slow throughput or high latency | D: Performance |
| NFS server error on encrypted FS | E: Encryption/KMS |
| DNS name resolution fails | F: VPC DNS |
2. Category A — Missing NFS Client
# Amazon Linux / RHEL / CentOS
sudo yum -y install amazon-efs-utils # preferred (includes mount helper + TLS)
# OR
sudo yum -y install nfs-utils
# Ubuntu / Debian
sudo apt-get install nfs-common
3. Category B — Network/Security Group
Connection timeout is the #1 EFS mount failure — almost always security groups.
- Verify mount target exists in the instance's AZ:
aws efs describe-mount-targets --file-system-id fs-ID --region REGION
- Verify security groups — check BOTH directions:
- Mount target SG:
aws ec2 describe-security-groups --group-ids sg-MT— MUST have inbound TCP 2049 from compute SG - Compute SG: MUST have outbound TCP 2049 to mount target SG
- Quick fix:
aws ec2 authorize-security-group-ingress --group-id sg-MT --protocol tcp --port 2049 --source-group sg-COMPUTE
- Mount target SG:
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.
- 6d ago First seen · 179 lines · 60 tokens per session scan B 0ebd005ff9b7
troubleshooting-efs is a skill published in the GitHub repository aws/agent-toolkit-for-aws (2,569 stars, last pushed yesterday), licensed Apache-2.0. It adds 60 tokens to every session and 1,623 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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