Fauna

Fauna, Inc. built a distributed document-relational database delivered as a cloud API, combining the relational query power of SQL with the flexibility of documents, global serverless distribution and strictly serializable ACID transactions over plain HTTPS. Fauna announced End-of-Service in March 2025 and shut the hosted service down on 2025-05-30; as of 2026-09-17 every Fauna service host returns NXDOMAIN and the apex domain forwards to an unrelated company. This profile is maintained as an archival record of the API surface as it stood at shutdown.

Fauna publishes 9 APIs on the APIs.io network, including Event Streaming API, EventFeeds API, Query API, and 6 more. Tagged areas include Database, Document Database, Serverless, Distributed Systems, and Change Data Capture.

The Fauna catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 2 Spectral governance rulesets.

Fauna’s developer surface includes authentication, CLI, and 23 more developer resources.

📡 Source on GitHub

0.0/100 minimal Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Database Document Database Serverless Distributed Systems Change Data Capture GraphQL Cloud Developer Tools Defunct

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 0.0/100 · minimal

Contract Quality 0.0 / 19

Developer Ergonomics 0.0 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.0 / 10

Contract Governance 0.0 / 9

Discoverability 0.0 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/fauna: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Fauna Event Streaming API

The Fauna Event Streaming API enables real-time change data capture by maintaining an open connection to the Fauna database and pushing events to clients as they occur. Develope...

Fauna Event Feeds API

The Fauna Event Feeds API provides a polling-based approach to change data capture, complementing the real-time Event Streaming API. Event feeds allow developers to retrieve bat...

Fauna JavaScript Driver

The Fauna JavaScript Driver is the official client SDK for interacting with Fauna from JavaScript and TypeScript applications. It provides template-based FQL query interpolation...

Fauna Python Driver

The Fauna Python Driver is the official client SDK for accessing Fauna from Python applications. It provides idiomatic Python interfaces for composing and executing FQL v10 quer...

Fauna .NET Driver

The Fauna .NET Driver is the official client SDK for interacting with Fauna from C# and .NET applications. It is designed for use with FQL v10 and provides strongly-typed query ...

fauna EventFeeds API

Poll-based change data capture using event feeds. Retrieve batches of change events at your own pace for scheduled synchronization and batch processing workflows.

fauna Query API

Execute Fauna Query Language (FQL) queries against a Fauna database.

fauna Schema API

Fetch, update, validate, and manage a database's schema as FSL files. Supports staged schema changes with status checking, committing, and abandoning.

Fauna Graph QL API

Execute GraphQL queries and mutations against a Fauna database.

Pricing Plans 1

Published pricing tiers and plan structures.

Fauna Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fauna Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Fauna Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Fauna Event Streaming

The Fauna Event Streaming API enables real-time change data capture by maintaining an open connection to the Fauna database and pushing events to clients as they occur. Develope...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Fauna Context

0 classes · 9 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Fauna API Rules

8 rules · 1 errors 7 warnings

SPECTRAL

Fauna API Rules

6 rules · 5 warnings 1 info

SPECTRAL

2 properties

JSON SCHEMA

SchemaValidationResponse

3 properties

JSON SCHEMA

Scroll for all 21

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Fauna Structure

0 properties

JSON STRUCTURE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Fauna Authentication

http · 1 scheme

SECURITY

Fauna Domain Security

DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Fauna Agentic Access

10 operations · 8 acting

AGENTIC

Resources

Documentation 3

Reference material describing how the API behaves

JSONSchema

JSONSchema

JSONSchema

JSONSchema

JSONSchema

JSONSchema

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

Design & Contract 9

Pagination, idempotency, versioning, errors, and events

JSONLD

Lifecycle

Conventions

ErrorCatalog

DataModel

Conformance

Vocabulary

SpectralRules

JSONStructure

Scroll for all 9

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

LinkedIn

Source (apis.yml)

name: Fauna
aid: fauna
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - fauna/faunadb
  open_source: unknown
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
specificationVersion: '0.23'
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fauna.png
url: https://raw.githubusercontent.com/api-evangelist/fauna/refs/heads/main/apis.yml
modified: '2026-09-17'
apis:
- aid: fauna:event-streaming-api
  name: Fauna Event Streaming API
  tags:
  - Change Data Capture
  - Database
  - Event
  - Real-Time
  - Streaming
  tags_raw:
  - Change Data Capture
  - Database
  - Events
  - Real-Time
  - Streaming
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://db.fauna.com
  humanURL: https://docs.fauna.com/fauna/current/reference/streaming/
  properties:
  - url: asyncapi/fauna-event-streaming-asyncapi.yml
    type: AsyncAPI
  description: The Fauna Event Streaming API enables real-time change data capture by maintaining an open connection to the
    Fauna database and pushing events to clients as they occur. Developers can subscribe to document or set changes and receive
    add, remove, and update events in real time. The API supports reconnection with a start timestamp to avoid missing events
    during disconnections. It is accessible via the /stream/1 HTTP endpoint with token-based authentication.
- aid: fauna:event-feeds-api
  name: Fauna Event Feeds API
  tags:
  - Change Data Capture
  - Database
  - Event
  - Polling
  tags_raw:
  - Change Data Capture
  - Database
  - Events
  - Polling
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://db.fauna.com
  humanURL: https://docs.fauna.com/fauna/current/learn/cdc/
  properties: []
  description: The Fauna Event Feeds API provides a polling-based approach to change data capture, complementing the real-time
    Event Streaming API. Event feeds allow developers to retrieve batches of change events at their own pace rather than maintaining
    a persistent connection. This is useful for scheduled synchronization tasks, batch processing workflows, and scenarios
    where a pull-based model is preferred over push-based streaming. Event feeds track the same add, remove, and update events
    as streams.
- aid: fauna:javascript-driver
  name: Fauna JavaScript Driver
  tags:
  - Driver
  - JavaScript
  - Node.js
  - SDK
  - TypeScript
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://db.fauna.com
  humanURL: https://docs.fauna.com/fauna/current/
  properties: []
  description: The Fauna JavaScript Driver is the official client SDK for interacting with Fauna from JavaScript and TypeScript
    applications. It provides template-based FQL query interpolation with type safety and a secure wire protocol that prevents
    injection vulnerabilities. The driver supports both Node.js server environments and browser-based applications, and includes
    built-in support for event streaming with automatic reconnection handling.
- aid: fauna:python-driver
  name: Fauna Python Driver
  tags:
  - Driver
  - Python
  - SDK
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://db.fauna.com
  humanURL: https://docs.fauna.com/fauna/current/
  properties: []
  description: The Fauna Python Driver is the official client SDK for accessing Fauna from Python applications. It provides
    idiomatic Python interfaces for composing and executing FQL v10 queries, managing authentication tokens, and handling
    pagination. The driver includes support for event streaming and event feeds, allowing Python developers to build real-time
    and batch-oriented data processing pipelines against Fauna databases.
- aid: fauna:dotnet-driver
  name: Fauna .NET Driver
  tags:
  - .NET
  - C#
  - Driver
  - SDK
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://db.fauna.com
  humanURL: https://github.com/fauna/fauna-dotnet
  properties:
  - url: https://github.com/fauna/fauna-dotnet
    type: Documentation
  description: The Fauna .NET Driver is the official client SDK for interacting with Fauna from C# and .NET applications.
    It is designed for use with FQL v10 and provides strongly-typed query construction and response handling. The driver enables
    .NET developers to perform document operations, run queries, and manage database resources using familiar C# patterns
    and conventions.
- aid: fauna:fauna-eventfeeds-api
  name: fauna EventFeeds API
  description: Poll-based change data capture using event feeds. Retrieve batches of change events at your own pace for scheduled
    synchronization and batch processing workflows.
  humanURL: https://docs.fauna.com/fauna/current/reference/http/reference/core-api/
  baseURL: https://db.fauna.com
  tags:
  - EventFeeds
  properties:
  - type: OpenAPI
    url: openapi/fauna-eventfeeds-api-openapi.yml
  - type: Overlay
    url: overlays/fauna-eventfeeds-api-overlay.yaml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
- aid: fauna:fauna-query-api
  name: fauna Query API
  description: Execute Fauna Query Language (FQL) queries against a Fauna database.
  humanURL: https://docs.fauna.com/fauna/current/reference/http/reference/core-api/
  baseURL: https://db.fauna.com
  tags:
  - Query
  properties:
  - type: OpenAPI
    url: openapi/fauna-query-api-openapi.yml
  - type: Overlay
    url: overlays/fauna-query-api-overlay.yaml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
- aid: fauna:fauna-schema-api
  name: fauna Schema API
  description: Fetch, update, validate, and manage a database's schema as FSL files. Supports staged schema changes with status
    checking, committing, and abandoning.
  humanURL: https://docs.fauna.com/fauna/current/reference/http/reference/core-api/
  baseURL: https://db.fauna.com
  tags:
  - Schema
  properties:
  - type: OpenAPI
    url: openapi/fauna-schema-api-openapi.yml
  - type: Overlay
    url: overlays/fauna-schema-api-overlay.yaml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
- aid: fauna:fauna-graph-ql-api
  name: Fauna Graph QL API
  description: Execute GraphQL queries and mutations against a Fauna database.
  humanURL: https://docs.fauna.com/fauna/current/reference/streaming/
  baseURL: https://db.fauna.com
  tags:
  - GraphQL
  tags_raw:
  - Graph QL
  properties:
  - type: OpenAPI
    url: openapi/fauna-graph-ql-api-openapi.yml
  - type: GraphQL
    url: graphql/fauna-graphql.md
  - type: Overlay
    url: overlays/fauna-graph-ql-api-overlay.yaml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
common:
- type: AgenticAccess
  url: agentic-access/fauna-agentic-access.yml
- type: DomainSecurity
  url: security/fauna-domain-security.yml
- type: Authentication
  url: authentication/fauna-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/faunainc
- type: JSONLD
  url: json-ld/fauna-context.jsonld
- type: JSONSchema
  url: json-schema/fauna-document-schema.json
- type: JSONSchema
  url: json-schema/fauna-event-schema.json
- type: JSONSchema
  url: json-schema/fauna-query-schema.json
- type: GitHubOrganization
  url: https://github.com/fauna
- type: SourceCode
  url: https://github.com/fauna/faunadb
- type: Packages
  url: packages/fauna-packages.yml
- type: SDKs
  url: packages/fauna-packages.yml
- type: CLI
  url: cli/fauna-cli.yml
- type: Lifecycle
  url: lifecycle/fauna-lifecycle.yml
- type: Conventions
  url: conventions/fauna-conventions.yml
- type: ErrorCatalog
  url: errors/fauna-problem-types.yml
- type: DataModel
  url: data-model/fauna-data-model.yml
- type: Conformance
  url: conformance/fauna-conformance.yml
- type: LLMsTxt
  url: llms/fauna-llms.txt
- type: Vocabulary
  url: vocabulary/fauna-vocabulary.yml
- type: Plans
  url: plans/fauna-plans-pricing.yml
- type: RateLimits
  url: rate-limits/fauna-rate-limits.yml
- type: FinOps
  url: finops/fauna-finops.yml
- type: SpectralRules
  url: rules/fauna-jsonschema-spectral-rules.yml
- type: JSONStructure
  url: json-structure/fauna-structure.json
description: Fauna, Inc. built a distributed document-relational database delivered as a cloud API, combining the relational
  query power of SQL with the flexibility of documents, global serverless distribution and strictly serializable ACID transactions
  over plain HTTPS. Fauna announced End-of-Service in March 2025 and shut the hosted service down on 2025-05-30; as of 2026-09-17
  every Fauna service host returns NXDOMAIN and the apex domain forwards to an unrelated company. This profile is maintained
  as an archival record of the API surface as it stood at shutdown.
tags:
- Database
- Document Database
- Serverless
- Distributed Systems
- Change Data Capture
- GraphQL
- Cloud
- Developer Tools
- Defunct
created: '2026-05-04'
x-status: defunct
x-enrichment:
  date: '2026-09-17'
  status: enriched
  artifacts_added: 13
  pass: local-v3
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-status-detail: Hosted service decommissioned 2025-05-30. No first-party Fauna host resolves, so no Website pointer is registered
  — on purpose. http://fauna.com now forwards to faunarobotics.com, a DIFFERENT company; that redirect is not a successor
  and must not be read as one. See lifecycle/fauna-lifecycle.yml.

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