awsclaw-sts

awsclaw-sts is a skill for Claude Code, Codex from necatiarslan/awsclaw. It costs 33 tokens per session (1,533 once invoked), scanned A, original, Apache-2.0.

A skill for using an AWS Security Token Service tool in Visual Studio Code. AWS STS handles identities, roles, and short-lived access credentials.

In plain words
What is it for?
Use it to verify caller identity, assume IAM roles, request temporary credentials or federation tokens, decode authorization errors, and inspect access-key account information.
Why use it?
It helps check which AWS identity is active, troubleshoot permission failures, and obtain temporary access without relying only on long-lived keys.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to verify caller identity, assume IAM roles, request temporary credentials or federation tokens, decode authorization errors, and inspect access-key account information.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/necatiarslan/awsclaw/awsclaw-sts
Install

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.

Any agent
npx skills add necatiarslan/awsclaw --skill awsclaw-sts
Clone the repo
git clone --depth 1 https://github.com/necatiarslan/awsclaw

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for awsclaw-sts

README.md
[![agentmods](https://agentmods.dev/badge/skills/necatiarslan/awsclaw/awsclaw-sts.svg)](https://agentmods.dev/skills/necatiarslan/awsclaw/awsclaw-sts)
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<a href="https://agentmods.dev/skills/necatiarslan/awsclaw/awsclaw-sts"><img src="https://agentmods.dev/badge/skills/necatiarslan/awsclaw/awsclaw-sts.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,533 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00033 $0.01533
Opus 5 $0.00016 $0.00766
Sonnet 5 $0.00007 $0.00307
Haiku 4.5 $0.00003 $0.00153

Measured 8d ago against content hash 2518487b31da, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

awsclaw-sts 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 8d 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.

skills/awsclaw-sts/SKILL.md · 130 lines

How it starts

The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.

awsclaw-sts

Use the STSTool language tool in VS Code to manage AWS STS (Security Token Service) operations — identity verification, role assumption, temporary credentials, and authorization debugging.

When to Use

  • User wants to verify their AWS identity (who am I?)
  • User wants to assume an IAM role
  • User wants to get temporary security credentials
  • User wants to decode an encoded authorization failure message
  • User wants to get a federation token
  • User wants to look up account info for an access key
  • User needs SAML or web identity token-based role assumption

Tool Reference

Tool name: STSTool

Input Schema

{
  "command": "<CommandName>",
  "params": { ... }
}

Commands (10 total)

Command Description
AssumeRole Assume an IAM role and get temporary credentials
AssumeRoleWithSAML Assume a role using a SAML assertion
AssumeRoleWithWebIdentity Assume a role using a web identity (OIDC) token
DecodeAuthorizationMessage Decode an encoded authorization failure message
GetAccessKeyInfo Get the account ID for an access key
GetCallerIdentity Get the identity of the calling credentials (account, ARN, user ID)
GetDelegatedAccessToken Get a delegated access token
GetFederationToken Get temporary credentials for a federated user
GetSessionToken Get temporary session credentials (with optional MFA)
GetWebIdentityToken Get a web identity token for a role

Parameters

Parameter Type Description
RoleArn string IAM role ARN (Required by: AssumeRole, AssumeRoleWithSAML, AssumeRoleWithWebIdentity, GetDelegatedAccessToken, GetWebIdentityToken)
RoleSessionName string Session name for role assumption (Required by: AssumeRole, AssumeRoleWithWebIdentity, GetWebIdentityToken)
DurationSeconds number Token lifetime in seconds (Used by: AssumeRole, GetDelegatedAccessToken, GetFederationToken, GetSessionToken, GetWebIdentityToken)
ExternalId string External ID for cross-account role assumption (Used by: AssumeRole)
PolicyArns array Managed policy ARNs for session policies (Used by: AssumeRole, AssumeRoleWithWebIdentity, AssumeRoleWithSAML)
Policy string IAM policy JSON string for temporary credentials (Used by: AssumeRole, GetFederationToken)
TransitiveTagKeys array Session tag keys to set as transitive (Used by: AssumeRole)
SourceIdentity string Source identity for role chaining (Used by: AssumeRole)
Tags array Session tags as [{Key, Value}] (Used by: AssumeRole, GetFederationToken)
SAMLAssertion string Base64-encoded SAML authentication response (Required by: AssumeRoleWithSAML)
PrincipalArn string ARN of SAML provider (Required by: AssumeRoleWithSAML)
WebIdentityToken string Web identity (OIDC) token (Required by: AssumeRoleWithWebIdentity, GetWebIdentityToken)
ProviderId string Identity provider ID (Used by: AssumeRoleWithWebIdentity, GetWebIdentityToken)
EncodedMessage string Encoded authorization failure message (Required by: DecodeAuthorizationMessage)
AccessKeyId string AWS access key ID (Required by: GetAccessKeyInfo)
DelegationTokenLifetimeSeconds number Delegated token lifetime in seconds (Used by: GetDelegatedAccessToken)
Name string Session or federation token name (Required by: GetFederationToken)
SerialNumber string MFA device serial number (Used by: GetSessionToken)
TokenCode string MFA token code (Used by: GetSessionToken)

Read the full file on GitHub · 130 lines

Changes

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.

  1. 8d ago First seen · 130 lines · 33 tokens per session scan A 2518487b31da

Subscribe to this mod's changes

awsclaw-sts is a skill published in the GitHub repository necatiarslan/awsclaw (1 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 33 tokens to every session and 1,533 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

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