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Crypto Transaction Categorizer
x402
Crypto Transaction Categorizer is a paid API for AI agents from crypto-tx-categorizer-production.up.railway.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-28).
Categorizes crypto and bank transactions into accounting categories with optional invoice matching and counterparty label interpretation
Price / call$0.1
Success—
StatusUnknown
How this service works
Categorize crypto/bank transactions with optional invoice matching and label interpretation
Output
Returns a list of categorized transactions, each assigned an accounting category (e.g. income, expense, internal transfer), along with invoice match results indicating which transactions correspond to specific outstanding invoices, and interpreted labels for known counterparties.
Example use cases
Freelancer invoice reconciliation
“I have 10 incoming crypto transactions this month and 3 open invoices — one for $800 from ClientA, one for $1200 from ClientB, and one for $500 from ClientC. Can you categorize all the transactions and tell me which ones match my invoices?”
Crypto bookkeeping for tax prep
“I need to categorize all my ETH and USDC transactions from last quarter for tax purposes. Here are the transaction hashes, timestamps, and counterparties — please classify each one as income, expense, or internal transfer. My own wallets are 0x111 and 0x222.”
Counterparty label-based classification
“Can you categorize these 20 blockchain transactions and interpret the counterparty labels I've set up? I've labeled wallet 0xAAA as 'Acme Corp (client)', 0xBBB as 'AWS (vendor)', and 0xCCC as 'Payroll (employee)'. Use those to figure out the right category for each transaction.”
Technical details
Endpoint
POSThttps://crypto-tx-categorizer-production.up.railway.app/api/v1/categorize?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to classify crypto or bank transactions into accounting categories, especially when you want to match payments against issued invoices or interpret counterparty labels for bookkeeping purposes. It is ideal for freelancers, DAOs, or finance teams reconciling on-chain payments with expected receivables. Prefer it over generic blockchain analytics tools when invoice matching and label-based categorization are required.
Side effects
- Missing required transaction fields (hash, timestamp, direction, counterparty, amount, asset) returns a validation error
- Exceeding 100 invoices or 50 own-wallet entries returns a limit exceeded error
- Invalid ISO 8601 timestamps cause parsing failures
- Ambiguous counterparty names may result in incorrect or no invoice matches
- Non-positive or zero amounts are rejected due to exclusiveMinimum constraint
- Payment failure via x402 protocol results in 402 response before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| invoices | array | Optional. Expected invoices to match against incoming payments. |
| ownWallets | array | Optional. Transfers to/from these are categorized as Internal transfer. |
| knownLabels | object | Optional. Counterparty -> label (e.g. "Acme Corp (client)"); labels are interpreted by keyword and direction. |
| transactions | array |
Tags
x402
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