Fauna API
Serverless document database with a proprietary query language (FQL v10) and GraphQL API, designed for globally distributed, transactional applications without infrastructure management.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Serverless document database. Secret key with role-based access. Attribute-based access control (ABAC). Keys scope to databases and roles — use minimal permissions.
⚡ Reliability
Best When
You're building serverless applications needing a globally distributed, transactional document database with no infrastructure overhead.
Avoid When
You need SQL compatibility, high-volume analytics, or predictable low-cost pricing at scale.
Use Cases
- • Storing and querying document-oriented application data without server management
- • Multi-region transactional data with strong consistency guarantees
- • Building APIs with GraphQL interface over structured documents
- • Serverless functions backends needing database without connection pooling
- • Storing complex hierarchical data with joins and transactions
Not For
- • High-throughput analytics or OLAP workloads
- • Large binary/blob storage
- • Applications requiring raw SQL or PostgreSQL compatibility
- • Teams needing on-premises deployment
Interface
Authentication
Secret keys (database secrets) used for authentication. Supports fine-grained access via Fauna's built-in attribute-based access control (ABAC). Keys can be role-scoped within FQL.
Pricing
Usage-based pricing. Can get expensive for write-heavy workloads. Compute ops (FQL function calls) also billed separately. No predictable flat-rate option.
Agent Metadata
Known Gotchas
- ⚠ FQL v10 is a significant breaking change from FQL v4 — verify which version your SDK targets
- ⚠ Fauna's query language (FQL) is proprietary — agents must learn FQL syntax, not SQL
- ⚠ Pricing can spike unexpectedly with inefficient queries — always count read/write operations
- ⚠ No connection pooling needed (serverless) but cold start latency can affect first query
- ⚠ GraphQL schema requires deployment before use — not dynamic like REST endpoints
- ⚠ Fauna is sunsetting older FQL versions — check deprecation timeline for long-term projects
Alternatives
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Scores are editorial opinions as of 2026-03-07.