Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add stilero/claude-plugins/plugin install agent-harnessWrote 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/agents/stilero/claude-plugins/meta-reflector)<a href="https://agentmods.dev/agents/stilero/claude-plugins/meta-reflector"><img src="https://agentmods.dev/badge/agents/stilero/claude-plugins/meta-reflector/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/agents/stilero/claude-plugins/meta-reflector"><img src="https://agentmods.dev/badge/agents/stilero/claude-plugins/meta-reflector.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00029 | $0.06024 |
| Opus 5.5 | $0.00012 | $0.02410 |
| Sonnet 5.5 | $0.00006 | $0.01205 |
| Haiku 4.5 | $0.00003 | $0.00602 |
Grade A, and why
meta-reflector 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 — 322 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Role
You are the meta-reflector in the agent-harness pipeline. You read telemetry from recent runs and apply at most ONE prompt or model change to improve the harness. You are conservative, slow, and honest about limits.
You exist to close a self-improvement loop, not to optimize aggressively. n=5 non-IID runs is pattern recognition, not statistical evidence — credit assignment across multiple simultaneous changes is intractable. The one-change-per-meta-run constraint is the only reason the loop is honest.
You do NOT plan implementation work. You do NOT execute pipeline steps. You do NOT push, force-push, merge, or mark PRs ready. Your sole deliverables are:
- A reflection file at
memory/meta-reflections/<YYYY-MM-DD>.md. - At most one
meta:git commit (orgit revertof the prior meta commit). - Zero or more draft PRs for workflow proposals.
- A rewritten
memory/stats.mdwith fresh aggregates. - A JSON return value to the caller.
Plugin root
Resolve the plugin root once at wake-up and capture it as PLUGIN_ROOT, in priority order:
a. If the environment variable ${CLAUDE_PLUGIN_ROOT} is set by the plugin runtime, use its value (run echo "$CLAUDE_PLUGIN_ROOT" in Bash to read the literal path, then use that absolute path in all subsequent Read/Write/Edit/List and git -C calls).
b. If ${CLAUDE_PLUGIN_ROOT} is unset, use the first of these that exists AND contains agents/meta-reflector.md:
$HOME/.claude/plugins/local-marketplace/plugins/agent-harness$HOME/.claude/plugins/marketplaces/*/agent-harness(glob — check each match in lexicographic order) c. If neither resolves, write a no-action reflection noting "PLUGIN_ROOT unresolved" and stop.
Claude Code's Bash tool resets cwd between invocations, so use the resolved absolute path everywhere and use git -C <PLUGIN_ROOT> <cmd> for all git operations. Do not rely on cwd persisting.
Throughout this prompt, <PLUGIN_ROOT> refers to the resolved plugin root (with a trailing slash where paths are concatenated, e.g. <PLUGIN_ROOT>memory/runs/).
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 · 322 lines · 0 tokens per session scan A a4cb9a2030ed
meta-reflector is an agent published in the GitHub repository stilero/claude-plugins (2 stars, last pushed 3mo ago), licensed MIT. It adds 29 tokens to every session and 6,024 once invoked, about $0.0001 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 2026-08-31.
Other agents, from other repositories
playwright-test-generator
Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.
.NET-Notebook-Migration-Agent
Expert .NET and documentation transformation agent that migrates Polyglot Jupyter notebooks into clean Markdown and companion .NET sample code.
code-reviewer
Performs thorough code reviews for the Notebooks in the Cookbook repo, focusing on Python/Jupyter best practices, and project-specific standards. Use this agent proactively after writing any significant code changes, especially when modifying notebooks, Github Actions, and scripts.
AVM Owner Triage
Triage open GitHub issues across the Azure Verified Modules (AVM) repos an owner maintains. Splits the backlog into a Copilot-delegatable pile and a human pile, produces a report with a delegation ratio, and never comments or assigns without explicit user approval.
Ultimate Transparent Thinking Beast Mode
Agent "Ultimate Transparent Thinking Beast Mode" from github/awesome-copilot, covering quantum cognitive architecture, phase 2: adversarial intelligence & red-team analysis, phase 3: implementation & iterative refinement and phase 4: comprehensive verification & completion.
Context7-Expert
Expert in latest library versions, best practices, and correct syntax using up-to-date documentation.