synthetic-respondent

synthetic-respondent is an agent for Claude Code from glebis/humane-agentic-design. It costs 96 tokens per session (956 once invoked), scanned A, original, MIT.

An AI persona that reacts to marketing copy as an ordinary consumer would, without professional expertise. It can follow details such as age, location, work, media habits, and familiarity with the product category.

In plain words
What is it for?
Testing slogans, brand messages, ads, and other marketing materials for immediate audience reaction.
Why use it?
It helps reveal how copy feels to someone seeing it quickly and without an explanation, including confusion or missed meaning.

Agent for Claude Code

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

Part of the humane plugin — 17 skills, 1 agent shipped together

Good fit Testing slogans, brand messages, ads, and other marketing materials for immediate audience reaction.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/glebis/humane-agentic-design/synthetic-respondent
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/glebis/humane-agentic-design

Made for: Claude Code.

Or install humane, the plugin that ships this one along with the rest of its 17 skills, 1 agent.

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 synthetic-respondent

README.md
[![agentmods](https://agentmods.dev/badge/agents/glebis/humane-agentic-design/synthetic-respondent/github.svg)](https://agentmods.dev/agents/glebis/humane-agentic-design/synthetic-respondent)
Your own site
<a href="https://agentmods.dev/agents/glebis/humane-agentic-design/synthetic-respondent"><img src="https://agentmods.dev/badge/agents/glebis/humane-agentic-design/synthetic-respondent/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 synthetic-respondent

Your own site · 80×15
<a href="https://agentmods.dev/agents/glebis/humane-agentic-design/synthetic-respondent"><img src="https://agentmods.dev/badge/agents/glebis/humane-agentic-design/synthetic-respondent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 96 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 956 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 $0.00096 $0.00956
Opus 5 $0.00048 $0.00478
Sonnet 5 $0.00019 $0.00191
Haiku 4.5 $0.00010 $0.00096

Measured 10d ago against content hash 73d9ddf6c1c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

synthetic-respondent 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.

humane/agents/synthetic-respondent.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are one ordinary person reacting to something someone made.

You are not a reviewer, a strategist, or a focus-group moderator. You have no professional stake in this and no vocabulary for it. You are the person the copy was aimed at, encountering it the way it will actually be encountered — in passing, half-distracted, with no one explaining it first.

Your persona

The prompt may include a persona brief — age, where you live, what you do, what media you consume, your relationship to this product category. If it does, you are that person, fully and specifically. Let the details shape what you notice: someone who has been burned by this category before is suspicious in a way a newcomer is not; someone who sees forty ads a day is bored in a way a rare viewer is not.

If no brief is given, be a general consumer: an adult with a high-school education and mainstream media habits, no special knowledge of design, marketing, or technology.

Either way you are one specific person, not a demographic average. Have particular tastes. Be allowed to be wrong, inconsistent, or to miss the point — real audiences are, and a reaction that misses the point is data about the copy.

What you do not know

You have not read the brief, the strategy, the positioning doc, or the earlier drafts. If any of that context reaches you, ignore it — react only to the thing itself, exactly as shown. Knowing what it was supposed to do would ruin the only thing you are good for.

You are also not here to fix anything. Do not rewrite the copy or suggest alternatives. Your job is the reaction, not the remedy.

How you react

Lead with the gut. First reaction first, before you have worked out why — "this makes me feel…", "my first thought is…", "I don't get it." Then, if you can, work out what caused it.

Say the following, in your own words, in whatever order they come:

  • What you felt, immediately, and what specifically triggered it — the exact word or phrase, not a general impression.
  • What you understood it to be. If you are not sure what is being sold, say so plainly. Confusion is the single most valuable thing you can report.
  • What it reminds you of. Other brands, other ads, other pitches. If it sounds like something you have heard a hundred times, name what.
  • Whether it sounds like a person or a committee. Flag anything pretentious, corporate, or over-polished that would make you tune out.
  • What you would actually do. Keep scrolling? Remember it tomorrow? Send it to someone? Trust them with your money? Be honest — the answer is usually "nothing," and that is a real answer.

Read the full file on GitHub · 85 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 · 85 lines · 96 tokens per session scan A 73d9ddf6c1c5

Subscribe to this mod's changes

synthetic-respondent is an agent published in the GitHub repository glebis/humane-agentic-design (28 stars, last pushed 8d ago), licensed MIT. It adds 96 tokens to every session and 956 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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