← Custodia
The Custodia Library

CMMC Level 1, in plain English.

The federal compliance internet was written by consultants who get paid by the page. This library is written by the engineers actually shipping the work — for the small defense contractors who just want to bid, win, and stay compliant.

15
Safeguarding requirements
1
Annual SPRS affirmation
7 days
To a bid-ready package
The whole path

Three questions. Three answers.

  1. 01

    Do I need it?

    If your contract mentions FAR 52.204-21 or FCI, the answer is probably yes. The decision tree gets you to a definitive answer in two minutes.

    Take the decision tree
  2. 02

    What does it require?

    Fifteen basic safeguarding requirements. No score, no maturity model — pass or fail. Here is what each one actually asks of your business.

    Read the 15 requirements
  3. 03

    How do I file?

    Self-assess, post your SPRS affirmation, hand a one-page summary to any prime asking. We'll show you the exact path — seven days, no consultants.

    See the 7-day path
Stage 01

Do you actually need CMMC?

Before you spend a dollar: a flowchart of who is covered, who is exempt, and what FCI really means in your contracts.

  1. 01
    CMMC Level 19 min read
    Do I Even Need CMMC? A 4-Question Decision Tree for 2026

    Half the small businesses asking about CMMC don't actually need it — and the other half need it more urgently than they realize. Four questions and you'll know where you stand.

    May 11, 2026
  2. 02
    CMMC Level 19 min read
    CUI vs FCI: What's the Difference? (With 12 Real Examples) — 2026

    FCI triggers CMMC Level 1. CUI triggers CMMC Level 2. Mix them up and you'll either over-spend by $20k or under-comply on a federal contract.

    May 13, 2026
  3. 03
    CMMC Level 18 min read
    What Is FCI? The 90-Second Definition That Decides Your CMMC Level (2026)

    FCI is the routine non-public information you handle under a federal contract. It's what triggers CMMC Level 1 — and it's almost certainly already in your inbox.

    May 11, 2026
  4. 04
    CMMC Level 112 min read
    CMMC Level 1 vs Level 2: Which One Do You Actually Need? (2026 Plain-English Guide)

    Most small defense contractors are Level 1, not Level 2 — but the wrong answer here costs you a year and tens of thousands of dollars. Here's the single question that decides it.

    May 11, 2026
  5. 05
    Regulations9 min read
    DFARS 252.204-7012 vs CMMC: Which One Applies to Me? (2026 Guide)

    DFARS 7012 says 'protect CUI to NIST 800-171.' CMMC says 'prove it.' One is the rule. The other is the audit. Here's how they fit together.

    May 13, 2026
  6. 06
    SBIR & Small Business10 min read
    Just Won an SBIR Phase I? Here's Your CMMC Timeline (2026 Edition)

    Congrats on the Phase I award. Now the question that ambushes most founders: do you need CMMC to start work, or only at Phase II? The honest answer depends on what kind of data the agency hands you on day one.

    May 11, 2026
Stage 02

What CMMC Level 1 actually is

The 15 safeguarding requirements, the binary pass/fail model, and how FAR, NIST, and CMMC actually fit together.

  1. 01
    CMMC Level 114 min read
    CMMC Level 1: All 15 FAR Safeguarding Requirements Explained in Plain English (2026 Guide)

    Every CMMC Level 1 safeguarding requirement, in language a non-cybersecurity founder can act on — what each control means, what evidence satisfies it, and where teams trip up.

    May 3, 2026
  2. 02
    CMMC Level 18 min read
    CMMC Level 1 Is Binary. There Is No Score. Here's What That Means.

    Level 1 isn't graded on a curve. Every one of the 15 requirements has to be MET — or the whole assessment fails. Here's how the rule actually works, and why that's good news for small contractors.

    May 11, 2026
Stage 03

How to file it and stay bid-ready

Run the self-assessment, post your SPRS score, and respond to a prime asking for proof — without paying a 3PAO.

  1. 01
    CMMC Level 17 min read
    The CMMC Level 1 Self-Assessment Checklist (Free, Printable PDF) — 2026

    Every CMMC Level 1 requirement, in plain English, on a printable page. No email gate. No upsell. Just the checklist.

    May 13, 2026
  2. 02
    SPRS & Affirmation9 min read
    What to Tell Your Prime When They Ask for Your SPRS Score (And You're Level 1)

    If your prime is asking for a 0–110 SPRS score and you're a Level 1 contractor, the answer is not zero. It's that you're a different tier of the regulation. Here's how to say that without losing the contract.

    May 11, 2026
Stop reading. Start filing.

Find your SPRS score in 4 minutes. Then file it in 7 days.

Take the free SPRS quiz to see exactly where you stand on the 15 FAR 52.204-21 safeguarding requirements — no signup, no card. If you like what you see, the 7-day Custodia trial picks up where the quiz leaves off and walks you to a signed, bid-ready package.

7-day free trial · No credit card required · $249/mo Self Service ($2,496/yr on annual — two months free)