31 CFR Parts 800 / 802 / 850 · 15 CFR Parts 740 / 744 / 774 · 22 CFR Part 121

Decompose the deal. Classify every component. Cite every conclusion.

Paste the transaction summary. The tool breaks the U.S. business into its constituent technologies, classifies each against the CCL and the USML, screens the counterparties against eleven restricted-party lists, and produces a filing-trigger memorandum — with the verbatim regulation behind every claim.

12
indexed regulations
0.84
classify top-1
11
screening lists
Step 1 · Transaction summaryattorney input

Apex Acquirer Ltd. (CN, PE fund) is acquiring 51% of Helios Microwave Corp., a Delaware-headquartered designer of GaN-on-SiC RF power amplifiers used in radar and SATCOM modules. Helios sells into DoD primes (Raytheon, Northrop) and commercial 5G OEMs. The deal includes the wafer-process IP, firmware libraries, and a customer dataset of recorded radar signatures.

Step 2 · Decomposed & classified4 components
  • 01
    MMIC RF amplifier
    EAR · CCL Cat 3
    3A001.b.2
  • 02
    GaN-on-SiC wafer process IP
    EAR · Technology
    3E002
  • 03
    Firmware (signal-processing libs)
    EAR · Info Security
    5D002
  • 04
    Customer dataset (radar signatures)
    ITAR · Munitions
    USML XI(b)
Each cited to the verbatim threshold language · top-1 = 0.84 across 25 evaluated cases
01Component classification

Inside one classification: posture, retrieval, ECCN, license check.

The hero shows the four components decomposed from one transaction. Here is the pipeline that produced a single one of them — the same pipeline runs for every component, in parallel.

01Component (one of four)
MMIC RF amplifier

Designed in-house at Helios Microwave Corp. (Delaware). Fabricated at TSMC Taiwan on a GaN-on-SiC process. Used in radar and SATCOM modules. Sold to DoD primes (Raytheon, Northrop) and commercial 5G OEMs.

02Posture enrichment
Per-component facts the classifier needs
provenancein-house design (Delaware)
manufacturingTSMC Taiwan · GaN-on-SiC
end_useradar · SATCOM · 5G
customersDoD primes · commercial OEMs
encryptionN/A
ip_ownershipHelios — sole
03HyDE query expansion
Vocabulary seeds for the retrieval pass
monolithic microwave ICMMIC power amplifierGaN-on-SiCfrequencies exceeding 31.8 GHzradar SATCOM amplifier3A001Category 3 — electronicsNS-AT controls
04Retrieval candidates
Top 5 after RRF fusion + Claude rerank
  • #13A001.b.2MMIC RF / microwave power amplifierEAR · CCL Cat 30.94
  • #23A001.b.5MMIC mixer / converterEAR · CCL Cat 30.71
  • #35A001.b.5Phased-array radar transmit/receive moduleEAR · CCL Cat 5 P10.58
  • #4USML XI(b)Electronic combat equipment for military useITAR · Munitions0.43
  • #53A001.a.1General microelectronic circuitEAR · CCL Cat 30.31
05Classifier output
ECCN 3A001.b.2 · NS, AT · license required for CN

“monolithic microwave integrated circuit power amplifier rated for operation at frequencies exceeding 31.8 GHz”

Reason-for-control
NS, AT
Country Chart vs. CN
License required
License exception
None applicable
Part 740 walk: CIV / GBS / ENC all fail on destination
footnoted to chunk_id 774.cat3.3A001.b.2 · open the citation drawer in any run for the verbatim text and the eCFR anchor.

Nine-category enum

Hardware, software, algorithms, data, firmware, cryptographic modules, FPGA configurations, services, and IP — each component is split by kind, then classified separately.

EAR Order of Review walk

When a component doesn't match a Category-3-through-9 entry, the classifier walks the EAR Order of Review (15 CFR § 738) deterministically to EAR99 or USML referral.

Threshold language verbatim

No paraphrases. The verbatim controlling text — “rated for operation at frequencies exceeding 31.8 GHz” — is what the run footnotes cite.

02Counterparty screening

Restricted-party screening that runs on every analyze, before classification.

600 ms debounced. Blocking-severity hits — OFAC SDN, BIS Entity List, DoD § 1260H — gate the run before any tokens are billed.

Counterparty screening
Blocking · run gated
Acquirer
Huawei Investment & Holding Co., Ltd.
jurisdiction: CN · ultimate parent walked to depth 3
  • BIS Entity Listmatch · 1.00
    15 CFR § 744, Suppl. No. 4 · effective 2019-05-16
  • DoD § 1260H Listmatch · 1.00
    Section 1260H, NDAA FY 2021 · refreshed 2026-04-01
  • OFAC 50% Rule — beneficial-owner walk3 SDN ties
    31 CFR § 571.602 · OFAC SDN Aug-2014 guidance
Run gated. The analyze button is disabled until counsel acknowledges blocking hits or substitutes the counterparty.
Lists screened on every run
OFAC Consolidated (11 lists)
Treasury OFAC · live API
polled hourly
BIS Entity / MEU / Unverified
15 CFR § 744, Supplements 4 / 7 / 6
polled daily
DoD § 1260H
Section 1260H, NDAA FY 2021
refreshed 2026-04-01
NDAA § 889
Section 889(a)(1)(B), NDAA FY 2019
manual annual review
DDTC Debarred Parties
22 CFR § 127.7
polled daily
OFAC 50% Rule
Aug-2014 OFAC guidance
beneficial-owner walker
03Filing-trigger analysis

The filing recommendation — mandatory or voluntary — with the shot-clock math.

Covered-investment determination, TID three-pillar walk (critical tech / critical infra / SPD), filing recommendation, deadline arithmetic anchored to the binding-agreement date. Every step cited.

Filing recommendation
Mandatory declaration
Authority
31 CFR § 800.401(c) — SFGI-substantial-interest in TID U.S. business

Acquirer X is a SUBSTANTIAL INTEREST holder of a FOREIGN GOVERNMENT (CN). Target Y is a TID U.S. BUSINESS by virtue of critical-technology production. A mandatory declaration is required under § 800.401(c)(1).

Regulatory shot clock
Filed
T+0
Initial review
30 days
Investigation
45 days
Presidential decision
15 days
Anchored to binding-agreement date 2026-05-14 · § 800.508 / 802.508
  • § 800.215CRITICAL TECHNOLOGY determination: ECCN 3A001.a.7 controlled (NS, AT).
  • § 800.248TID U.S. BUSINESS status: produces critical technology (pillar 1 satisfied).
  • § 800.256SUBSTANTIAL INTEREST: 25% direct foreign-government interest threshold met.
§ 800.401

Covered investment

Deterministic § 800.210 / .211 walk through control rights, governance rights, and covered-investment rights. No LLM in the gating logic.

§ 800.215, .248

TID determination

Critical-technology match against indexed § 800.215, critical-infrastructure LLM-judged against Appendix A, SPD against § 800.241 thresholds.

§ 800.508

Shot-clock math

Subpart F deadline arithmetic anchored to the binding-agreement date — declaration, review, investigation, Presidential decision.

04The deliverable

The memorandum your partner expects, with the regulation in the footnote.

Streaming-generated markdown that becomes a citation-anchored filing-trigger memo. Defined terms in BOLD-CAPS on first use. Footnotes to verbatim chunk text, not paraphrases.

Attorney work product · privileged & confidentialpage 1 of 14
MEMORANDUM
Filing-trigger analysis · 31 CFR Part 800
TO:Deal Team — Project CypressFROM:Export Controls & National Security PracticeRE:Acquirer X / Target Y — CFIUS filing-trigger determinationDATE:May 10, 2026

I. Covered transaction determination

The proposed transaction is a COVERED CONTROL TRANSACTION within the meaning of 31 CFR § 800.210 because Acquirer X, a FOREIGN PERSON organized under the laws of the People’s Republic of China, will acquire 51% of the voting interests of Target Y, a U.S. BUSINESS engaged in the design and manufacture of advanced semiconductor packaging.1

Target Y is a TID U.S. BUSINESS under § 800.248 by virtue of its production of CRITICAL TECHNOLOGIES controlled under 15 CFR Part 774, Category 3A — specifically 3A001.a.7 (microwave monolithic integrated circuits).2

131 CFR § 800.210(a)(1); § 800.224 (definition of foreign person).
231 CFR § 800.215(a)(2); 15 CFR § 774, Suppl. No. 1, ECCN 3A001.
05Outbound & real estate

Outbound investment and real-estate transactions — the scope CFIUS counsel also has to track.

Part 850 outbound notification routing (development / production / other-sector gating) and Part 802 real-estate proximity to listed military installations, both with the same citation discipline.

Outbound — 31 CFR Part 850
Notifiable
  1. § 850.224Development-technology sectorsAI-systems training compute > 10²³ FLOPsTriggered
  2. § 850.403Production-technology sectorsNot triggered
  3. § 850.501Other sectors of national-security interestNot triggered
U.S. person engaging with a COVERED FOREIGN PERSON in a covered activity. § 850.601 notification required within 30 days.
Real estate — 31 CFR Part 802
Voluntary notice
InstallationDistanceCite
MCAS Beaufort0.7 mi§ 802 App. A, item 38
Port of Charleston2.4 mi§ 802 App. A, item 81
Naval Health Clinic14.2 minot listed
Real-estate transaction is within CLOSE PROXIMITY of a listed military installation under § 802.225.
Real estate
06Indexed regulations

Twelve authorities, indexed in full, refreshed daily, deep-linked to the source.

The corpus the tool reasons over. Each tile opens the authoritative text — eCFR, Treasury, Commerce, or DoD — in a new tab. Every citation in a generated memorandum traces back here.

Refreshed by a Cloudflare Worker cron at 06:00 UTC each day · valid_from / valid_to timestamps on every indexed section for point-in-time replay.
07Retrieval & evals

Hybrid retrieval, measured against an eval set we publish openly.

Vectorize ANN + D1 FTS5 BM25 fused via reciprocal rank, expanded with HyDE, reranked by Claude. The numbers below are what we measured, not what we hoped for.

Measured performanceeval set sizes shown honestly
MeasureValueEval set
Retrieval — top result correctwhat a human reads first in /search0.6961 queries
Retrieval — correct result in top 5the slice fed to the analysis LLM0.8561 queries
Classification — first ECCN / USML correctwhat the component card displays0.8425 cases
Classification — correct in top 5candidates surfaced for attorney review0.9625 cases
Decomposition composite (v2)coverage · enrichment · gaps · classification0.815-case mini
retrieval.pipelinecfius_search/search/retriever.py
  1. 01identifier_prefilter// ECCN/USML/CFR regex
  2. 02hyde_expansion// vocabulary-seeded query rewriting
  3. 03vectorize_ann// 1024-dim cosine, k=20
  4. 04d1_bm25// FTS5, k=20
  5. 05reciprocal_rank_fusion// k=60 fusion
  6. 06llm_reranker// top-10 reranked
corpus: 2,781 chunks · eCFR Parts 800 / 802 / 850 · EAR Parts 740 / 774 · ITAR Part 121 · Treasury guidance · daily change-detection cron (06:00 UTC)
Search every chunk · live at /search
Corpus search results showing § 800.215 critical technologies and § 800.303 covered investments, with relevance scores and Open eCFR deep-links.
08Workflow surface

The workflow surface, built for the way export-controls counsel actually drafts.

Hover any defined term for the regulatory definition. Click any footnote for the verbatim chunk and the eCFR deep-link. Track diligence gaps by severity. Compare two runs side-by-side.

Glossary tooltip
frontend/lib/glossary.ts · 57 entries

A covered investment in a TID U.S. business is governed by § 800.211.

Covered investment
A direct or indirect investment, other than a covered control transaction, by a foreign person in an unaffiliated TID U.S. business.
31 CFR § 800.211 · Open eCFR ↗
Citation drawer
every footnote links to verbatim text
31 CFR § 800.215 — critical technologies
(a) Defense articles or defense services included on the United States Munitions List (USML) set forth in the International Traffic in Arms Regulations (22 CFR parts 120–130);
(b) Items included on the Commerce Control List (CCL) set forth in Supplement No. 1 to part 774 of 15 CFR …
chunk_id 800.215-a-2 · Open eCFR ↗
Gaps panel
severity-tiered diligence checklist
  • CriticalFIPS 140-3 validation evidence for the cryptographic module.
  • ImportantCountry of manufacture for the GaN-on-SiC wafer process.
  • InformationalCompliance certifications (CMMC level, DCSA NISP status).
Plus a typeset glossary at /glossary
Glossary index showing 57 entries with categories (Acronyms, Defined regulatory terms, EAR reasons for control, Lists and programs, Regimes and agencies) and CCATS / CCL definitions with eCFR deep-links.
09Methodology & defensibility

The methodology attestation that makes the memo defensible.

Every run footer lists model versions, retrieval pipeline, per-source corpus revisions, and a run ID. Built so the audit trail is permanent, not implied.

Run methodology & attestationappended to every memorandum
run_idrun_2026-05-10T17:42:11Z_9af3
primary_modelclaude-opus-4-7
classifier_modelclaude-sonnet-4-6 (JSON-mode)
reranker_modelclaude-haiku-4-5-20251001
corpus_refresh2026-05-10 06:00 UTC
corpus_chunks2,781 across 7 sources
Per-source revisions
  • eCFR 31 CFR 8002026-04-22612 chunks
  • eCFR 31 CFR 8022026-03-04184 chunks
  • eCFR 31 CFR 8502026-04-22226 chunks
  • eCFR 15 CFR 7402026-04-22307 chunks
  • eCFR 15 CFR 7742026-04-22982 chunks
  • eCFR 22 CFR 1212026-04-22438 chunks
  • Treasury CFIUS guidance2026-02-1832 chunks
Every assertion in the memorandum is footnoted to a chunk_id whose verbatim text is retrievable from the citation drawer.

Daily change-detection cron

A Cloudflare Worker polls upstream at 06:00 UTC, hashes the content, and logs revisions to corpus_revision_log. Stale corpus is surfaced in the run footer.

valid_from / valid_to on every section

Effective-date stamps on every indexed regulation. Point-in-time replay supported via the soft-delete tombstone.

chunk_id on every assertion

The draft generator footnotes to specific retrieved chunks, not paraphrases. Open the citation drawer for verbatim text and the eCFR anchor.

Read before you reach for the credentials

Open the analyze tool, or browse what’s shipping next.

Or skim the glossary, search the corpus, or read the in-flight roadmap. There’s no email gate, no demo booking, no waitlist — the product itself is the destination.

Disclaimer

This tool provides decision support, not legal advice. Outputs are research-grade drafts grounded in the cited regulations as of the corpus refresh date; classifications, filing-trigger determinations, and draft memoranda warrant review by qualified counsel before any reliance.