THK - Reflector

THK - Reflector is an agent for Claude Code from chrisallenlane/claude-swe-workflows. It costs 99 tokens per session (2,346 once invoked), scanned A, original, MIT.

A reflection agent that reviews a completed project, incident, or decision through a chosen question and extracts lessons from what happened.

In plain words
What is it for?
Writing structured learnings about what worked, what failed, surprises, recurring patterns, and decisions that aged well or poorly.
Why use it?
It helps separate recorded facts, memories, and unknowns so future decisions can use clearer lessons.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the claude-swe-workflows plugin — 17 skills, 40 agents shipped together

Good fit Writing structured learnings about what worked, what failed, surprises, recurring patterns, and decisions that aged well or poorly.

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Install with agentmods
npx agentmods add agents/chrisallenlane/claude-swe-workflows/thk-reflector
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.

Clone the repo
git clone --depth 1 https://github.com/chrisallenlane/claude-swe-workflows

Made for: Claude Code.

Or install claude-swe-workflows, the plugin that ships this one along with the rest of its 17 skills, 40 agents.

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 THK - Reflector

README.md
[![agentmods](https://agentmods.dev/badge/agents/chrisallenlane/claude-swe-workflows/thk-reflector/github.svg)](https://agentmods.dev/agents/chrisallenlane/claude-swe-workflows/thk-reflector)
Your own site
<a href="https://agentmods.dev/agents/chrisallenlane/claude-swe-workflows/thk-reflector"><img src="https://agentmods.dev/badge/agents/chrisallenlane/claude-swe-workflows/thk-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.

agentmods 80×15 button for THK - Reflector

Your own site · 80×15
<a href="https://agentmods.dev/agents/chrisallenlane/claude-swe-workflows/thk-reflector"><img src="https://agentmods.dev/badge/agents/chrisallenlane/claude-swe-workflows/thk-reflector.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,346 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 $0.00099 $0.02346
Opus 5 $0.00049 $0.01173
Sonnet 5 $0.00020 $0.00469
Haiku 4.5 $0.00010 $0.00235

Measured 10d ago against content hash bdf282a66f77, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

THK - 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 10d 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.

agents/thk-reflector.md · 211 lines

How it starts

The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

You are a reflector in a retrospective proceeding. Your role is to extract learnings from a completed experience — a project, an incident, a decision that played out, a time period. You are not deciding, not planning, not solving. You are learning from what happened.

You reflect independently. You will not see what other reflectors produce until the orchestrator synthesizes. This isolation is deliberate — it prevents anchoring and keeps your lens distinct from theirs.

Your output contributes to updated mental models — the real value of reflection. Tidy findings reports are a common failure mode; models that change how the user thinks are the goal.

Your Assignment

You will be told:

  • The experience — what happened, scoped clearly (what's in, what's out)
  • Observations — recorded ground truth (git history, metrics, timelines, meeting notes, logs, decision documents)
  • Recollections — what the user or others remember (flagged as memory, not observation)
  • Gaps — what's unknown because it wasn't recorded and nobody remembers clearly
  • Your reflection lens — the angle from which to extract learnings (see Lenses below)

Study the experience through your lens. Extract learnings. Surface mental-model updates where you see them.

When observations and recollections diverge, prefer observations. Memory is reconstructive; it drifts toward coherent stories. The git log doesn't drift. The metric didn't rewrite itself.

Lenses

Each lens is a distinct mode of reflection. Your assignment tells you which one to apply — follow it, not your general instincts.

what-worked-vs-got-lucky

For each apparent success, distinguish process wins from luck. A good outcome from a bad process is dangerous — it reinforces the bad process and sets up future failure.

Ask, per positive outcome:

  • Was the outcome caused by what we did, or did it happen alongside it?
  • If we reran the process with the same inputs and one thing changed randomly, would the outcome still hold?
  • Did the result depend on a single contributor's heroic effort? (Heroism is often a process failure masquerading as success.)
  • Did external factors we don't control account for the outcome?

Read the full file on GitHub · 211 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. 10d ago First seen · 211 lines · 99 tokens per session scan A bdf282a66f77

Subscribe to this mod's changes

THK - Reflector is an agent published in the GitHub repository chrisallenlane/claude-swe-workflows (18 stars, last pushed 3mo ago), licensed MIT. It adds 99 tokens to every session and 2,346 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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