agent-creator

A workflow for creating and changing live AgentCore runtime agents, including their prompts, models, tools, servers, and skills. AgentCore is the deployed environment where these agents run.

In plain words
What is it for?
It is for creating agents, building multi-agent workflows, and updating the configuration of existing deployed agents.
Why use it?
It provides a defined way to modify deployed agents instead of changing their setup inconsistently.

Skill for Claude CodeCodex

Part of the agent-creator plugin — 1 skill, 1 agent shipped together

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.

agentmods
npx agentmods add skills/aws-samples/sample-agentic-chatbot-accelerator/agent-creator
Any agent
npx skills add aws-samples/sample-agentic-chatbot-accelerator --skill agent-creator
Clone the repo
git clone --depth 1 https://github.com/aws-samples/sample-agentic-chatbot-accelerator

Made for: Claude Code, Codex.

Or install agent-creator, the plugin that ships this one along with the rest of its 1 skill, 1 agent.

Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,797 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00097 $0.03797
Opus 5 $0.00048 $0.01899
Sonnet 5 $0.00019 $0.00759
Haiku 4.5 $0.00010 $0.00380

Measured 3d ago against content hash fcf0fc105a53, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-creator 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 3d ago.

The scan reads SKILL.md. This mod also ships 9 executable files (scripts/discover_endpoint.py, scripts/fetch_agent_config.py, scripts/fetch_traces.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.claude/plugins/agent-creator/skills/agent-creator/SKILL.md · 247 lines

The source is not reproduced here

Licensed MIT-0

The repository is licensed MIT-0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 3d ago First seen · 247 lines · 97 tokens per session scan A fcf0fc105a53

Subscribe to this mod's changes

agent-creator is a skill published in the GitHub repository aws-samples/sample-agentic-chatbot-accelerator (22 stars, last pushed 26d ago), licensed MIT-0. It adds 97 tokens to every session and 3,797 once invoked, about $0.0005 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 2026-08-30.

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