TRES Transaction Story

Fetch a transaction by hash from TRES Finance, render a flow diagram of all asset movements, and explain in plain English what happened.

MCP Server

All calls use the TRES Finance MCP server (URL: https://ai.tres.finance/mcp).

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Step 1 — Authenticate

Call get_viewer (no arguments) to verify the session.

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Step 2 — Fetch the Transaction

Query the transaction using its hash as the identifier:

query GetTransactionByHash($hash: String!, $currency: String) {
  transaction(identifier: $hash, currency: $currency, limit: 1) {
    results {
      id
      identifier
      platform
      timestamp
      success
      decodedFunctionName
      methodId
      fromAddress { identifier displayName isInternal customAccountName }
      toAddress   { identifier displayName isInternal customAccountName }
      contract    { identifier contractName protocols applications }
      classification { activity action functionName }
      ledgerSummary
      applications
      protocols
      internalAccounts { id name }
      children {
        id
        amount
        balanceFactor
        platform
        type
        fiatValue
        nonTaxableType
        isInternalTransfer
        financialActionGroup
        belongsTo { id name identifier }
        sender    { identifier displayName isInternal customAccountName }
        recipient { identifier displayName isInternal customAccountName }
        asset {
          identifier
          symbol: key
          assetClass { id symbol verificationStatus }
        }
      }
    }
  }
}

Variables: { "hash": "<user_provided_hash>", "currency": "usd" }

Fallback: If identifier returns 0 results, retry with identifier_Contains using the last 20 characters of the hash. Hashes on some chains may be stored without the 0x prefix — strip it and retry if still empty.

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Step 3 — Parse the Data

From the result, extract:

Field	Purpose
identifier	The tx hash
platform	Blockchain (ETHEREUM, SOLANA, etc.)
timestamp	Date/time
success	Did it succeed?
decodedFunctionName	What smart-contract function was called
fromAddress / toAddress	Top-level sender → receiver
contract.contractName	Smart contract involved (if any)
classification.activity + .action	TRES classification label
children[]	Each sub-transaction (individual token movement)

For each child sub-transaction, extract:

• asset.assetClass.symbol — the token symbol (e.g. ETH, USDC)
• amount — quantity moved
• fiatValue — USD equivalent
• balanceFactor — 1 = inflow, -1 = outflow
• belongsTo.name — which internal wallet this belongs to
• sender.identifier / recipient.identifier — counterparties
• type — GAS, TOKEN_TRANSFER, etc.

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Step 4 — Render the Diagram

Use the show_widget tool (Visualizer) to render an HTML widget containing an inline SVG diagram.

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PRE-RENDER CHECKLIST — do this before writing a single SVG element

A. Prepare all label strings first

For every arrow label (token amount + symbol), apply these formatting rules:

1. Format the amount:
   • amount ≥ 1,000,000 → "1.2M" style (1 decimal)
   • amount ≥ 1,000 → "264K" or "12,233" (comma-separated integer)
   • amount ≥ 1 → round to 2 decimal places max
   • amount < 1 → keep up to 4 significant figures (e.g. "0.033")
2. Truncate the symbol:
   • symbol ≤ 6 chars → use as-is (ETH, USDC, DAI, CRV)
   • symbol 7–10 chars → use as-is only if the full label fits (see step 3)
   • symbol > 10 chars OR contains + OR is a compound LP token → replace with "LP tokens"
3. Measure the full label: label = amount + " " + symbol. Count characters. Multiply by 7. That's the pixel width.
4. The available space for a label = the arrow's x-span minus 20px safety margin.
   • Left gap (wallet→contract): x goes from 136 to 248 → span = 112px → max label = 13 chars
   • Right gap (contract→wallet): x goes from 408 to 504 → span = 96px → max label = 11 chars
5. If label_px_width > available_space, shorten further: abbreviate amount to 1 sig fig, or use symbol-only if still too wide.

B. Count the arrows and calculate SVG height

• Count non-gas arrows (outflows + inflows). Call this N.
• Each arrow row occupies 34px of vertical space.
• Base node centre Y = 50 + (N × 34) / 2 (so arrows fan symmetrically around the node centre).
• Gas arrow hangs 60px below the bottom of the left wallet circle.
• SVG height = node_centre_y + node_radius + 80 (gas arrow + label + padding).
• Minimum SVG height = 230px.

C. Lay out arrow Y positions

• Space arrows evenly, 34px apart, centred on node_centre_y.
• First arrow y = node_centre_y - ((N-1) × 34) / 2
• Each subsequent arrow y += 34
• Outflow arrows (wallet → contract) use left half of diagram.
• Inflow arrows (contract → wallet) use right half.
• If there is exactly 1 inflow and multiple outflows, centre the inflow arrow at node_centre_y.

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Fixed node positions (do not change these)

ViewBox width: 640
Left wallet circle:    cx=90,  cy=node_centre_y, r=46
Contract rect:         x=248,  y=node_centre_y-55, width=160, height=110, rx=12
Right wallet circle:   cx=550, cy=node_centre_y, r=46

Arrow x coordinates:
  Outflow (left→centre): x1=136, x2=246   midpoint_x=191
  Inflow (centre→right): x1=410, x2=504   midpoint_x=457
  Gas (downward):        x1=x2=90, y1=node_centre_y+46

These x values are derived from the node edges and must not be adjusted. They guarantee labels always fall in the clear gap between nodes.

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Arrow label placement rules (no exceptions)

Label x = midpoint_x of arrow (191 for outflows, 457 for inflows)
Label y = arrow_y - 12
text-anchor = "middle"
font-size = 10.5px
font-weight = 500

Never place a label at the same y as another label. If two arrows are only 34px apart, their labels (at y-12) are 34px apart — that is sufficient. Never stack two labels at the same y coordinate.

Never use text-anchor="start" for labels that fall near node edges — always "middle" anchored at the midpoint x.

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Node internal text rules

Wallet circle (r=46, so usable text band = ±36px from centre):

Line 1 (name):    y = cy - 8,  font-size=11, font-weight=500
Line 2 (address): y = cy + 7,  font-size=9.5, font-family=monospace
Line 3 (role):    y = cy + 21, font-size=9

Three lines maximum. Each line must fit within the circle width (chord at that y ≈ 80px = ~11 chars at 9px, ~9 chars at 10px). Truncate wallet names longer than 10 chars.

Contract rect (width=160, height=110):

Line 1 (name):     y = rect_top + 28, font-size=11, font-weight=500
Line 2 (subname):  y = rect_top + 44, font-size=10
Line 3 (function): y = rect_top + 60, font-size=9.5
Line 4 (address):  y = rect_top + 76, font-size=9, font-family=monospace
Line 5 (type):     y = rect_top + 92, font-size=9

Maximum 5 lines. Each line centred at x=328. Lines must fit within 152px (160 - 8px padding each side) → max ~21 chars at 9px. Truncate anything longer.

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Gas arrow rules

• Always vertical, pointing down from the bottom of the left wallet circle.
• x1 = x2 = 90 (same as wallet cx)
• y1 = node_centre_y + 46 + 2 (2px gap below circle edge)
• y2 = y1 + 55
• Label: placed to the RIGHT of the line — x=98, y=(y1+y2)/2, text-anchor="start"
• Below the arrow tip, add a small pill: rect with label "network fee", centred at x=90.
• Gas label max length: "0.033 ETH gas" = 13 chars. Always fits.

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Color coding

Element	Fill	Stroke/Color
Internal wallet (sender)	#EAF3DE	#639922
Internal wallet (receiver)	#dcfce7	#16a34a
Smart contract	#EEEDFE	#7F77DD
Outflow arrow	—	#dc2626
Inflow arrow	—	#16a34a
Gas arrow	—	#ea580c
Outflow label text	—	#dc2626
Inflow label text	—	#16a34a
Gas label text	—	#ea580c

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Animation

@keyframes flowDash { to { stroke-dashoffset: -40; } }
@keyframes fadeUp   { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:translateY(0); } }

Outflow arrows: stroke-dasharray:8 5; animation: flowDash 1.1s linear infinite;
Inflow arrows:  stroke-dasharray:8 5; animation: flowDash 1.1s linear infinite;
Gas arrow:      stroke-dasharray:4 4; animation: flowDash 1.7s linear infinite;
Cards/sections: opacity:0; animation: fadeUp .5s ease forwards; (staggered delays)

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Header

Single line of plain text, no pill badges:

[hash-pill: 0xABCD...1234]   Chain · Date · function() · ✓ success

Hash pill style: monospace, 11px, bg-secondary, border, border-radius 6px, padding 4px 10px. Everything else: 12px, color-text-secondary. Success mark: color-text-success, font-weight 500.

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Stat cards (below diagram)

3-column grid, one card per: total sent (red), total received (green), gas paid (orange). Format values as: −$272,910 / 264K LP / 0.127 ETH. Keep under 12 chars. Sublabel: 11px, muted, shows token breakdown if multiple assets.

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Footer route card

[function() badge] via ContractName · [protocol tag] [protocol tag] [Explain X ↗ button] Function badge: yellow bg #FEF9C3, text #854d0e, border-radius 6px. Protocol tags: bg-secondary, border, border-radius 4px, 11px. Button: calls sendPrompt('How does [ContractName/protocol] work?')

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Step 5 — Plain-Language Explanation

After the diagram, write a short explanation (3–6 sentences) in simple, non-technical language. Cover:

1. What happened: The core action (swap, transfer, deposit, stake, etc.)
2. Who was involved: Wallets and contracts in plain terms
3. What moved: Which assets changed hands and in what direction
4. Net result: What the org's wallets ended up with / paid out

Tone: Imagine explaining to someone who understands crypto but not accounting. Avoid jargon like "balanceFactor", "sub-transaction", "FIFO". Say "sent", "received", "paid as gas", "swapped X for Y", etc.

Example:

This was a token swap on Uniswap. Your wallet (Main Treasury) sent 1,000 USDC to the Uniswap V3 router contract, which in turn sent back 0.412 ETH (worth $1,020). You also paid 0.003 ETH ($7.40) in gas fees to the Ethereum network. Net result: you traded stablecoins for ETH at roughly $2,476 per ETH.

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Error Handling

Situation	Action
Transaction not found	Tell user the hash wasn't found in TRES. Ask if they want to check the hash or try a different one.
No children (empty sub-txs)	Show header only; note "No asset movements recorded — the tx may be a failed or contract-only interaction."
Missing fiat values	Show amounts without USD; note "USD value unavailable for some assets."
Auth failure	Tell user to check TRES connection and re-authenticate.