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Relaystation SQL Query Engine
x402
Relaystation SQL Query Engine is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Executes full SQL queries against CSV, JSON, or Parquet files using a sandboxed read-only DuckDB engine, returning results as Parquet
Price / call$0.01
Success—
StatusUnknown
How this service works
$0.0005/MB. Query any CSV/JSON/parquet file with full SQL — sandboxed read-only DuckDB, parquet in and out. A serverless query engine for a fraction of a cent. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Output
Returns query results as a Parquet file (or structured tabular data), reflecting the rows and columns produced by the SQL statement executed against the input file. Pricing is $0.0005/MB of data processed, with a 1¢ minimum charge and any remainder auto-credited.
Example use cases
Aggregate sales data from CSV
“I have a CSV file of sales transactions at this URL — can you run SQL on it to get the total revenue grouped by product category, sorted descending?”
Filter rows from a Parquet dataset
“Query this parquet file and give me only the rows where status = 'failed' and amount > 1000, using SQL — I need the results back as a table.”
Join and summarize JSON records
“I've got a JSON dataset of customer orders — run a SQL query to count orders per customer and return only customers with more than 5 orders.”
Technical details
Endpoint
POSThttps://api.relaystation.ai/v1/data/sqlWhen to prefer
Choose this endpoint when you need to run arbitrary SQL analytics on flat files (CSV, JSON, Parquet) without spinning up a database. Ideal for agents doing ad-hoc data exploration, filtering, or aggregation on files available by URL. Prefer it over hosted database solutions when the data is file-based, the query is one-off, and cost-per-MB pricing is more economical than a persistent connection.
Side effects
- Invalid SQL syntax returns a parse or execution error
- File URL unreachable or unsupported format returns an ingestion error
- Query exceeds memory or size limits returns a resource error
- Write operations (INSERT, UPDATE, DROP) rejected — read-only sandbox
- Malformed Parquet or corrupt CSV returns a file parsing error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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