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Synapse API — Celo Transaction History
x402
Synapse API — Celo Transaction History is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Retrieves paginated transaction history for addresses on the Celo blockchain, with filtering by block range, category, and direction.
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
A list of transactions involving the specified Celo address(es), including transfer amounts, block numbers, transaction hashes, sender/receiver addresses, and optional metadata. Results are paginated via a pageKey for continued queries.
Example use cases
Celo wallet activity audit
“Show me all transactions sent from my Celo wallet 0xABC123... between block 18000000 and 18500000, sorted newest first, with metadata included.”
Incoming transfer monitoring
“Get me the last 50 incoming transfers to Celo address 0xDEF456... across all categories, excluding zero-value ones, in descending order.”
DeFi portfolio reconciliation
“Fetch the full transaction history for Celo address 0x789XYZ... from block 17000000 onwards, paginated with up to 100 results, so I can reconcile my DeFi activity.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/celo/tx/history?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need transaction history specifically on the Celo blockchain with fine-grained filtering by block range, direction, and category. Prefer it over generic multi-chain endpoints when Celo is your target network and you need paginated, structured transfer records with optional metadata enrichment.
Side effects
- Invalid or malformed address returns an error response
- Block range too large may time out or return partial results
- Invalid category values may be ignored or cause errors
- Missing required address fields returns a validation error
- pageKey expiry or invalidity causes pagination to fail
- Payment not received (x402) results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| order | string | |
| pageKey | string | |
| toBlock | string | |
| category | array | |
| maxCount | number | |
| fromBlock | string | |
| toAddress | string | |
| fromAddress | string | |
| withMetadata | boolean | |
| excludeZeroValue | boolean |
Tags
x402
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