tap lets you turn raw data files (CSV, JSONL, Parquet, etc.) into managed, production-ready APIs in seconds. You upload your data, shape it with SQL transformations as needed, and then expose it via documented, secured endpoints.
tap turns CSV, JSONL, Parquet and other data files into managed, production-ready REST APIs in seconds.
- for
- Developers and data teams needing fast read-only APIs over static datasets.
- pricing
- freemium
works withSQLOpenAPI
Key features
6 features of tap
- File upload & storage — Upload CSV, JSONL, Parquet or any size file from local or S3-compatible storage.
- SQL transformations — Use SQL to select, join, clean, enrich and add geospatial indexes to your data.
- Auto-generated REST endpoints — Creates documented, secured HTTPS APIs with OpenAPI specs.
- Versioned pipelines — Fully managed data pipelines let you version datasets and track changes.
- Usage monitoring — Built-in monitoring of endpoint usage and request limits.
- API security — Secure endpoints with API keys and customizable filters.
Use cases
- Expose government CSV datasets as a public API for developers.
- Provide read-only product catalogs to front-end applications without building a backend.
- Create geospatial-enabled APIs for location-based services from raw data files.
tap pricing
- Free$0100 MB storage · 100 requests/month · 5 requests/minute · API keys security
- Standard$3/month1 GB storage · 10,000 requests/month · All Free features
tap vs alternatives
 tap |  WunderGraph |  Grafbase |  Sideko |  Impler | |
|---|---|---|---|---|---|
| Best for | Instant APIs from data files | API composition platform | Instant GraphQL APIs | SDK generation for APIs | CSV import UI components |
| Pricing | Freemium | Free | Free | Subscription | Subscription |
| DevHunt upvotes | 1 | 38 | 24 | 81 | 77 |
| Launched | Oct 2026 | Jan 2023 | Jan 2023 | Jan 2024 | Apr 2024 |
- tap vs WunderGraph: WunderGraph focuses on API composition and GraphQL, while tap creates REST APIs directly from files.
- tap vs Grafbase: Grafbase provides instant GraphQL APIs for data sources, whereas tap generates REST APIs from raw files with SQL transforms.
- tap vs Sideko: Sideko generates SDKs and docs for existing APIs; tap builds the API itself from data files.
- tap vs Impler: Impler offers CSV/Excel import widgets for front-end apps, while tap turns those files into full backend APIs.
tap FAQ
How large can my data files be on the Free plan?+
Up to 100 MB per file.
Can I host the generated APIs on my own domain?+
Custom domains are available in the Custom plan.
What query language is used to transform data?+
SQL is used for selecting, joining, and enriching data.
Is there a way to monitor API usage?+
Yes, tap provides endpoint usage monitoring on all plans.
Do I need to write code to create the APIs?+
No, you upload files, define SQL transformations, and tap generates the REST API automatically.
Summarized by DevHunt from tapintodata.com · Oct 1, 2026. Details may change; check the official site.
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