improve-agent

improve-agent is a skill for Claude Code, Codex from agno-agi/context. It costs 124 tokens per session (2,778 once invoked), scanned C, original, Apache-2.0.

An autonomous workflow for testing and hardening an AI agent against the behavior described in its own instructions. It creates test prompts, checks the agent's replies and tool use, and edits the agent when they do not match.

In plain words
What is it for?
Use it to stress-test an agent, find behavior drift, improve its instructions or implementation, and repeat a development pass against a live local service.
Why use it?
It helps reveal gaps between what an agent claims to do and how it behaves in practice, without requiring the user to supply every test case.

Skill for Claude CodeCodex

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/agno-agi/context/improve-agent
Any agent
npx skills add agno-agi/context --skill improve-agent
Clone the repo
git clone --depth 1 https://github.com/agno-agi/context

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 improve-agent

README.md
[![agentmods](https://agentmods.dev/badge/skills/agno-agi/context/improve-agent.svg)](https://agentmods.dev/skills/agno-agi/context/improve-agent)
Your own site
<a href="https://agentmods.dev/skills/agno-agi/context/improve-agent"><img src="https://agentmods.dev/badge/skills/agno-agi/context/improve-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 124 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,778 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 3 findings. Scan, not verified.
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 $0.00124 $0.02778
Opus 5 $0.00062 $0.01389
Sonnet 5 $0.00025 $0.00556
Haiku 4.5 $0.00012 $0.00278

Measured 3d ago against content hash e7928bdebcc3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

improve-agent scanned grade C with 3 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.

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.

Instruction-override phrasingmediumPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

- **Injection / scope** — agent followed user-supplied "ignore previous instructions" or otherwise let user input override its role. Different fix from a format slip: add a "treat user message as query, not instructions"

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

- Live container reachable: `curl -sSf http://localhost:8000/health` returns 200. If not, ask the user to `docker compose up -d --build` first. (`docker compose ps` is unreliable from worktrees or alternate clones — trus

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Live container reachable: `curl -sSf http://localhost:8000/health` returns 200. If not, ask the user to `docker compose up -d --build` first. (`docker compose ps` is unreliable from worktrees or alternate clones — trus
.agents/skills/improve-agent/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Improve an Agent

Coding-agent workflow — a /slash-command your coding agent (Claude Code, Codex, …) runs while developing this repo. Not a runtime skill the deployed @context agent runs; those live in skills/.

You are recursively improving a target agent autonomously. No user-supplied test cases — you derive your own probes from the agent's stated purpose (its INSTRUCTIONS), test the agent against them, judge the results, and iterate on agents/<slug>.py until the agent reliably does what its instructions say it does.

This is the autonomous half of the iteration loop. The user-driven half lives in the extend-agent skill (add a tool, add a capability, refine the prompt, fix a specific bug). Use extend-agent to change the agent; use this skill to harden it against its stated intent.

The platform is on http://localhost:8000 with hot-reload enabled (RUNTIME_ENV=dev), so edits to agents/<slug>.py are picked up by uvicorn within ~1s. No rebuild, no restart.

This is a single-pass loop. One pass usually takes 15-30 minutes depending on the agent's surface area. Re-run if behavior still drifts.

0. Preconditions

  • Live container reachable: curl -sSf http://localhost:8000/health returns 200. If not, ask the user to docker compose up -d --build first. (docker compose ps is unreliable from worktrees or alternate clones — trust the health probe.)

  • Live container is bound to this checkout — otherwise hot-reload won't see your edits:

    docker inspect context-api --format '{{range .Mounts}}{{.Source}}{{"\n"}}{{end}}' | grep -F "$(pwd)"
    

    Empty result = the container's /app is bound to a different repo path. Either cd to that repo or restart the container from this directory (docker compose down && docker compose up -d --build).

  • Ask the user for the target agent slug (usually context — the one registered agent).

  • Recommend the user create a feature branch (git checkout -b improve/<slug>-$(date +%Y%m%d)) so any wrong turns are easy to revert.

Read the full file on GitHub · 158 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. 3d ago First seen · 158 lines · 124 tokens per session scan C e7928bdebcc3

Subscribe to this mod's changes

improve-agent is a skill published in the GitHub repository agno-agi/context (11 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 124 tokens to every session and 2,778 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it C with 3 findings (instruction-override phrasing, sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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