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.
npx agentmods add skills/impactbrussels/founderos/start-herenpx skills add impactbrussels/FounderOS --skill start-heregit clone --depth 1 https://github.com/impactbrussels/FounderOSWrote 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/impactbrussels/founderos/start-here)<a href="https://agentmods.dev/skills/impactbrussels/founderos/start-here"><img src="https://agentmods.dev/badge/skills/impactbrussels/founderos/start-here.svg" alt="Measured on agentmods" 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 | $0.00102 | $0.01201 |
| Opus 5 | $0.00051 | $0.00600 |
| Sonnet 5 | $0.00020 | $0.00240 |
| Haiku 4.5 | $0.00010 | $0.00120 |
Grade A, and why
start-here 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 3d 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 — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Start Here - the Founder OS front door
First-time founders rarely fail for lack of effort. They fail by working on the wrong thing for the stage they're at - polishing a logo before they've confirmed anyone has the problem. This skill diagnoses where the founder actually is and routes them to the right next step.
The method
Built on the Founder OS scaffold (High tier - this is a decision about where to spend scarce time).
Step 1 - Locate the founder (ask, don't assume)
Ask these one at a time. Stop as soon as you can confidently place them.
- "In one sentence, what are you building and who is it for?" → captures
[ONE_LINER]+[ICP]. - "Have you talked to real potential customers about the problem yet - and what did they say?" → the single best signal of stage.
- "What's the most painful or scary thing about your startup right now?" → reveals the
[RISKIEST_ASSUMPTION]and the binding[CONSTRAINT].
If the founder is vague on #1, that is the diagnosis - start at Idea & Validation.
Step 2 - Place them on the journey
| If the founder… | They are at | Route them to |
|---|---|---|
| has an idea but hasn't confirmed the problem is real/painful | Idea & Validation | validate-idea → customer-interviews |
| has talked to customers, problem is real, unsure what to build | Build / MVP | scope-mvp |
| has something built, no clear users/traction | Launch & GTM | positioning-and-gtm → launch-plan → find-first-customers |
| has early users, wants more paying customers | Launch & GTM | find-first-customers → runway-and-unit-economics |
| needs money to keep going / scale | Fundraise | pitch-deck → investor-pipeline |
| is forming the company / adding a co-founder / first hire | Operate & Scale | legal-and-incorporation · cofounder-and-equity · first-hire |
| is running but stretched thin / losing the plot | Operate & Scale | the loops/ cadences (standup, weekly review) |
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.
- 3d ago First seen · 89 lines · 102 tokens per session scan A 4ea3dbf235fd
start-here is a skill published in the GitHub repository impactbrussels/FounderOS (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 102 tokens to every session and 1,201 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 2026-08-31.
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