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synthetic-session-generator

synthetic-session-generator is a skill for Claude Code, Codex from glebis/claude-skills. It costs 150 tokens per session (2,676 once invoked), scanned A, original, MIT.

A generator for fictional, realistic coaching or therapy session transcripts for evaluations, demonstrations, and training data.

In plain words
What is it for?
Use it to create persona-consistent coach-client or therapist-client dialogue, evaluation datasets, product demos, or prompt examples.
Why use it?
It provides believable example conversations without using real client records, and marks them as synthetic.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the AskUserQuestion tool.

not rated 409repo +5 yesterday A scan SkillSpector: pass 150 tokens original MIT

Good fit Use it to create persona-consistent coach-client or therapist-client dialogue, evaluation datasets, product demos, or prompt examples.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/glebis/claude-skills/synthetic-session-generator
View source ↗ glebis/claude-skills skills.salient.community
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.

Any agent
npx skills add glebis/claude-skills --skill synthetic-session-generator
Clone the repo
git clone --depth 1 https://github.com/glebis/claude-skills

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 synthetic-session-generator

README.md
[![agentmods](https://agentmods.dev/badge/skills/glebis/claude-skills/synthetic-session-generator/github.svg)](https://agentmods.dev/skills/glebis/claude-skills/synthetic-session-generator)
Your own site
<a href="https://agentmods.dev/skills/glebis/claude-skills/synthetic-session-generator"><img src="https://agentmods.dev/badge/skills/glebis/claude-skills/synthetic-session-generator/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-session-generator

Your own site · 80×15
<a href="https://agentmods.dev/skills/glebis/claude-skills/synthetic-session-generator"><img src="https://agentmods.dev/badge/skills/glebis/claude-skills/synthetic-session-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 150 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,676 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00150 $0.02676
Opus 5.5 $0.00060 $0.01070
Sonnet 5.5 $0.00030 $0.00535
Haiku 4.5 $0.00015 $0.00268

Measured 2mo ago against content hash 0aa52aab8360, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

synthetic-session-generator 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 2mo ago.

The scan reads SKILL.md. This mod also ships 5 executable files (scripts/_common.py, scripts/convert_format.py, scripts/make_card.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.

synthetic-session-generator/SKILL.md · 186 lines

How it starts

The opening of the file, as written. The whole thing — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Synthetic Session Generator

Purpose

Generate fictional but believable coaching/therapy session transcripts that read like real recorded sessions, while remaining clearly synthetic. Outputs feed three jobs: eval datasets (with ground-truth labels to benchmark summarizers and analyzers), product demos (realistic sessions without exposing real client data), and training/prompt examples (few-shot material for a coaching or therapy assistant).

Realism comes from two disciplines: persona consistency (a client speaks the same way, carries the same history and presenting issues across a session arc) and modality fidelity (the practitioner uses the techniques, question forms, and pacing of the chosen framework). Every output is watermarked as synthetic so it can never be mistaken for a real clinical record.

When to Use

Use when a user asks for fake/synthetic/mock/demo coaching or therapy transcripts, eval or test data for session-analysis tools (e.g. the coaching-session-summarizer), few-shot dialogue examples, or persona-consistent session series. Do not use to analyze or summarize a real transcript — that is the job of coaching-session-summarizer or transcript-analyzer.

Workflow

Step 0 — Setup mode (configure defaults)

When the user wants to configure the skill ("setup", "set my defaults", "always use Russian / IFS / 50-minute sessions"), run setup mode. Offer the three choices via AskUserQuestion, then persist them:

  • Language — output language for the transcript (en, ru, de, es, fr, pt, it, nl).
  • Modality — default framework (icf-grow, cbt, ifs, act-mi).
  • Session duration — minutes (e.g. 25 / 50 / 80); mapped to a turn budget (~0.6 turns/min).
python3 scripts/setup_config.py --language ru --modality cbt --duration 50 --show
python3 scripts/setup_config.py --show     # view current defaults

This writes config.json in the skill directory. Later scaffold_session.py runs inherit these defaults, so the user only specifies what differs (e.g. persona and session position). Per-run flags always override the saved config.

Read the full file on GitHub · 186 lines

Files

What ships with it

14 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2mo ago First seen · 186 lines · 150 tokens per session scan A 0aa52aab8360

Subscribe to this mod's changes

synthetic-session-generator is a skill published in the GitHub repository glebis/claude-skills (409 stars, last pushed yesterday), licensed MIT. It adds 150 tokens to every session and 2,676 once invoked, about $0.0006 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 2026-09-03.

Learning and teachingResearchagent-skillsclaude-skillscodex-skill
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