01Decision-Optimisation Platform / GBRead-Only / Non-Custodial

One ledger for every exchange. Clearer risk decisions.

Yellowfish aggregates holdings across your exchanges into a single analytical view. It analyses order-book depth and downside variance in real time, then recommends rebalancing actions you control.

Cross-exchange telemetryPredictive rebalancingDownside variance

Connect Read-Only Portfolio Review System Architecture

No withdrawal permissions. No asset transfers. Evaluate with read-only access.

Unified Ledger — Live AggregationSync 12s

Venue	Exposure	Risk Score	Signal
Exchange A — Spot	£48,210	32 / 100	Hold
Exchange B — Spot	£31,740	58 / 100	Trim 8%
Exchange C — Custody	£22,050	21 / 100	Hold

SPEC — API sync / Volatility monitor / Rebalance queue. Figures shown are illustrative interface labels, not live data.

02The Fragmentation Problem

Risk hides between logins.

Most investors hold assets across three to five exchanges. No single screen shows total exposure. Decisions arrive late.

Yellowfish replaces scattered tabs with one unified ledger. It normalises balances, pricing and order-book depth. You see the whole position before you act.

Fragmented → Unified data flow

R.01

Split balances, blind exposure

Holdings sit in separate exchange accounts. Total allocation and cash weight stay unclear.

R.02

Emotional timing

Without consistent signals, investors react to headlines. Entry and exit points drift.

R.03

Slow reaction to drawdown

Volatility spreads across venues. Manual checks miss early shifts in downside variance.

Fragmented — Current State

Login 1: Spot balance, isolated chart
Login 2: Separate P&L, delayed export
Login 3: Manual spreadsheet reconciliation
Outcome: Partial view, late response

Unified — Yellowfish Ledger

One API layer: normalised balances
One model: cross-venue volatility check
One queue: ranked rebalance actions
Outcome: Full exposure, earlier control

03Unified Architecture / Technical Spec 3.2

A single pane for multi-exchange control.

Connect exchange accounts with read-only keys. Yellowfish syncs balances and market depth into one table. Models score risk per venue and across the portfolio.

Exchange API SyncLatency < 60sRisk Scoring 0–100Rebalance Queue

Asset / Venue	Net Holding	GBP Value	24h Change	Risk	Recommendation
BTC — Exchange A	0.82	£48,210	−1.8%	34	Hold — depth stable
ETH — Exchange B	14.6	£31,740	−3.1%	58	Reduce concentration
Stable — Exchange C	22,050	£17,420	+0.0%	12	Reserve buffer intact
SOL — Exchange B	96.0	£8,940	+2.4%	47	Await confirmation

A — API Sync

Exchange connectivity

Read-only keys pull balances and orders. Keys never request withdrawal rights.

B — Latency

Refresh discipline

Standard sync under 60 seconds. Anomalies trigger immediate re-checks.

C — Risk scoring

Downside variance

Each asset and venue receives a 0–100 score based on volatility and depth.

D — Rebalancing

Ranked actions

Recommendations list size, venue and reason. You approve every action.

04Predictive Methodology

How the model reaches a recommendation.

Four auditable stages. Each stage uses observable market data. No opaque automation moves your funds.

1Ingest

Real-time multi-exchange ingestion

Balances, order books and funding data flow into one normalised ledger. The system checks for missing or stale feeds before analysis starts.

Spot balances
Order-book depth
Price dispersion

2Detect

Volatility and anomaly detection

Models track downside variance and liquidity thinning across venues. Sudden dispersion between exchanges flags elevated risk.

Variance bands
Liquidity thresholds
Cross-venue gaps

3Recommend

Non-custodial recommendation generation

The engine ranks actions by risk reduction per trade. Each item states the expected exposure change and the data behind it.

Position sizing
Venue selection
Rationale log

4Guard

Automated or manual execution guardrails

You choose manual approval or bounded rules. Limits cap trade size, frequency and stablecoin reserves. Yellowfish never takes custody.

Manual approve
Size caps
Reserve floor

—About Yellowfish

Built for allocators who value process.

Yellowfish is a decision-optimisation platform for digital asset oversight. It focuses on measurement, documentation and capital preservation. The interface favours tables over charts and reasons over slogans.

Designed in line with UK data protection expectations.
Documentation supports adviser and audit review.
Models explain inputs before suggesting action.

Yellowfish operations team reviewing portfolio risk controls

05Security and Governance

Custody stays with you. Permissions stay minimal.

The platform analyses data. It does not hold assets. Access controls enforce that boundary.

Withdrawal functions are rejected at key creation.
All traffic uses encrypted transport and storage.
Access logs record every sync and review.

Inspect Control Advantages

Enforced API permissions	Read-only keys only. No withdrawal rights requested or stored. Keys can be revoked at the exchange at any time.
Enforced Custody model	Non-custodial by design. Funds remain in your exchange accounts. Yellowfish issues analysis, not transfers.
AES-256 / TLS Encryption	Keys encrypted at rest. All synchronisation uses TLS in transit. Secrets are isolated per workspace.
UK Aligned Compliance posture	UK-hosted infrastructure options and GDPR-aligned data handling. Clear records support adviser oversight.

06Decision Support / FAQ

Direct answers before you connect.

Five questions cautious investors ask first. Short answers, stated plainly.

Q.01 — Compatibility

Which exchanges can I connect?

Yellowfish supports major spot exchanges with read-only API access. You add one venue at a time and remove any venue without affecting the rest of the ledger.

Q.02 — Models

How are predictive models trained?

Models use historical volatility, order-book depth and cross-venue pricing behaviour. They score downside variance. They do not forecast guaranteed price levels.

Q.03 — Custody

Does Yellowfish hold my assets?

No. Assets remain on your exchanges. API keys block withdrawals. You retain full control of transfers and execution.

Q.04 — Action

Do I have to automate trading?

No. Default mode is manual review. You approve each rebalancing step. Optional guardrails set size and frequency limits if you enable them.

Q.05 — Pricing

How is pricing structured?

Pricing follows workspace and venue count, not asset volume. Evaluation starts with a read-only connection. Full terms are listed on request.

Q.06 — Detail

Where can I read full documentation?

See the FAQ and contact pages for method notes and support routes. Documentation covers permissions, data retention and export formats.

07Terminal CTA / Onboarding

Evaluate risk on real holdings. Without moving funds.

Connect a read-only API key. See your unified ledger and first risk assessment. Revoke access at any point from your exchange.

Inspect Live Demo Environment

Operational entry. No sales call required. Documentation provided before connection.