Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/lhl/realitychecknpx agentmods add skills/lhl/realitycheck/rc-synthesizeWrote 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/skills/lhl/realitycheck/rc-synthesize)<a href="https://agentmods.dev/skills/lhl/realitycheck/rc-synthesize"><img src="https://agentmods.dev/badge/skills/lhl/realitycheck/rc-synthesize/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/skills/lhl/realitycheck/rc-synthesize"><img src="https://agentmods.dev/badge/skills/lhl/realitycheck/rc-synthesize.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 | $0.00032 | $0.01694 |
| Opus 5 | $0.00016 | $0.00847 |
| Sonnet 5 | $0.00006 | $0.00339 |
| Haiku 4.5 | $0.00003 | $0.00169 |
Grade A, and why
rc-synthesize 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 9d 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 — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cross-Source Synthesis
Create a cross-source synthesis across multiple source analyses and claims. Use after checking multiple sources or when producing a higher-level, decision-oriented view.
When This Skill Activates
- "Synthesize these sources"
- "Compare and contrast these analyses"
- "Write a synthesis across sources"
- "What should we believe overall"
Create a cross-source synthesis across multiple source analyses and existing claims.
Use this after running $check on multiple sources (or when you already have relevant source analyses and want a higher-level conclusion).
Note: For multi-source prompts, $check should typically produce the synthesis automatically; $rc-synthesize is the standalone/iterative version of that workflow.
Prerequisites
Environment
Set REALITYCHECK_DATA to point to your data repository:
export REALITYCHECK_DATA=/path/to/realitycheck-data/data/realitycheck.lance
The PROJECT_ROOT is derived from this path - all analysis files go there.
CLI Commands
Reality Check provides CLI tools (rc-db, rc-validate, rc-export, rc-embed).
Check availability:
which rc-db # Should show path if pip-installed
If commands are not found, either:
- Install:
pip install realitycheck(recommended) - Use
uv runfrom framework directory:uv run python scripts/db.py ... - Add framework as submodule and use:
.framework/scripts/db.py ...
Red Flags: Wrong Repository
IMPORTANT: Always write to the DATA repository, never to the framework repository.
If you see these directories, you're in the framework repo (wrong place for data):
scripts/tests/integrations/methodology/
Stop and verify REALITYCHECK_DATA is set correctly.
Data Source of Truth
LanceDB is the source of truth, not YAML files.
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.
- 9d ago First seen · 194 lines · 32 tokens per session scan A 84153e34e20c
rc-synthesize is a skill published in the GitHub repository lhl/realitycheck (41 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 32 tokens to every session and 1,694 once invoked, about $0.0002 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.
Other skills, from other repositories
Deep Research
Produce a deep, structured research report on a topic: decompose into key dimensions, analyze each with evidence and reasoning, synthesize cross-cutting insights, and surface open questions. Use for deep research, analysis, and literature/landscape reviews.
document-query
Use when reading, extracting, summarizing, comparing, or answering questions over local or remote documents, code files, PDFs, Office files, HTML/text files, large text-heavy files, and fallback OCR for document images or scans when vision tools are unavailable or insufficient.
military-scout
A root-cause investigation workflow for software problems. It gathers information, searches records and clues, analyzes possible causes, verifies the likely explanation, and reports the result.
data-analysis
Analyze datasets and create visualizations.
Jupyter Live Kernel
Guides notebook-first analysis with reproducible kernels, inspectable data loading, and explicit promotion paths back into durable code.
swot-analysis
A structured way to assess a decision by listing internal strengths and weaknesses, then external opportunities and threats. SWOT stands for Strengths, Weaknesses, Opportunities, and Threats.