A skill for checking factual claims in an email against the IndieStack codebase. The email text is supplied as an argument.

Use it when reviewing an email from Ed or another source that makes claims about IndieStack, so each checkable statement can be compared with the actual project.

It helps detect invented or outdated statements about files, features, routes, scripts, database details, deployment, configuration, and other code-related facts.

How Pattyboi101/indiestack configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Pattyboi101/indiestack. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/Pattyboi101/indiestack/master/.agents/skills/fact-check/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/Pattyboi101/indiestack

Made for: Claude Code.

Or install indiestack, the plugin that ships this one along with the rest of its 4 skills, 6 commands, 1 hook, 1 MCP server.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/pattyboi101/indiestack/fact-check/github.svg)](https://agentmods.dev/skills/pattyboi101/indiestack/fact-check)

Your own site

<a href="https://agentmods.dev/skills/pattyboi101/indiestack/fact-check"><img src="https://agentmods.dev/badge/skills/pattyboi101/indiestack/fact-check/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/pattyboi101/indiestack/fact-check"><img src="https://agentmods.dev/badge/skills/pattyboi101/indiestack/fact-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,128 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.

Model	Per session	Once invoked
Fable 5.1	$0.00018	$0.01128
Opus 5	$0.00009	$0.00564
Sonnet 5	$0.00004	$0.00226
Haiku 4.5	$0.00002	$0.00113

Measured 9d ago against content hash 6860428eea23, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

fact-check 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.

.agents/skills/fact-check/SKILL.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fact-Check Ed's Email

Ed (co-founder) uses an AI assistant that frequently hallucinates. Your job is to verify every factual claim in his email against the actual IndieStack codebase.

Input

The email text is provided in $ARGUMENTS. If empty, stop and ask for the email text.

Email Text

$ARGUMENTS

Procedure

Step 1: Extract Claims

Read the email carefully and extract every factual claim that can be checked against code. Categories include:

File paths: Any mention of a file or directory (e.g., "src/indiestack/routes/foo.py")
Feature status: Claims that something is "done", "pending", "broken", "not yet built", "needs work"
Route names: URL paths like /explore, /api/something, /dashboard
Script names: References to Python scripts, shell scripts, CLI commands
Database fields/tables: Column names, table names, schema details
Deployment status: Claims about what's live, what's on Fly, environment variables
Function/class names: References to specific code symbols
Configuration: Claims about settings, environment variables, dependencies
URLs: External URLs, API endpoints, webhook paths
Marketing/content: Claims about content in marketing/ or other docs

Number each claim for the truth table.

Step 2: Verify Each Claim

For each extracted claim, search the codebase methodically:

Key locations to check:

Routes: src/indiestack/routes/*.py
DB schema and queries: src/indiestack/db.py
Main app wiring: src/indiestack/main.py
Auth: src/indiestack/auth.py
Payments: src/indiestack/payments.py
Email: src/indiestack/email.py
MCP server: src/indiestack/mcp_server.py
Root-level scripts: /home/patty/indiestack/*.py
Scripts directory: /home/patty/indiestack/scripts/
Marketing docs: /home/patty/indiestack/marketing/*.md
Static assets: src/indiestack/static/
Config: pyproject.toml, fly.toml, Dockerfile, server.json
Architecture doc: /home/patty/indiestack/ARCHITECTURE.md

Read the full file on GitHub · 122 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.

9d ago First seen · 122 lines · 18 tokens per session scan A 6860428eea23

Subscribe to this mod's changes

fact-check is a skill published in the GitHub repository Pattyboi101/indiestack (4 stars, last pushed 3mo ago), licensed MIT. It adds 18 tokens to every session and 1,128 once invoked, about $0.0001 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 2026-08-31.

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