Apache Avro
Apache Avro is a data serialization system that provides rich data structures, a compact binary format, and container files for storing persistent data. Avro uses JSON for defining data types and protocols, and serializes data in a compact binary format.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Apache Avro the way a machine reads it — 27 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Apache Avro scores 17.4/100 (emerging), with a separate agent-readiness read of 3/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
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How we profile Apache Avro
Each block below is one kind of artifact we hold for Apache Avro. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 1
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Apache Avro Schema Format
JSON Schema for validating Apache Avro schema definitions. Covers all Avro types including primitive types (null, boolean, int, long, float, double, bytes, string), complex type...
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Avro Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Avro Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Avro Finops
FINOPSFeatures 8
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Schema-First Design
Avro requires schemas to be defined in JSON before serialization, enabling strong typing and schema validation.
Schema Evolution
Avro supports backward, forward, and full schema compatibility through aliases, defaults, and type promotions.
Compact Binary Format
Avro serializes data in a compact binary format without field names, reducing payload size significantly.
Rich Type System
Supports primitive types, complex types (records, enums, arrays, maps, unions, fixed), and logical types (date, time, decimal, UUID).
Language Agnostic
Official implementations in Java, Python, C, C++, C#, PHP, Ruby, and Rust with broad ecosystem support.
Container Files
Avro Object Container Files (OCF) embed the schema with the data for self-describing data files.
RPC Support
Avro defines an RPC protocol mechanism using schemas for both request and response messages.
Kafka Native Format
Apache Kafka ecosystem uses Avro as a primary serialization format with the Confluent Schema Registry.
Scroll within the panel for all 8 ·
Spectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Apache Avro API Rules
SPECTRALApache Avro API Rules
SPECTRALSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Use Cases 5
What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.
What developers build with this provider.
Event Streaming
Serialize Kafka events with Avro schemas stored in a Schema Registry for high-throughput data pipelines.
Data Lake Storage
Store large datasets in Avro container files in Hadoop-compatible storage with embedded schema metadata.
Schema Registry Integration
Use Confluent Schema Registry to manage schema versions and enforce compatibility across producers and consumers.
Inter-Service Messaging
Define message contracts between microservices using Avro schemas for type-safe data exchange.
Batch Data Processing
Process large volumes of structured data with Apache Spark, Hive, or Flink using Avro as the interchange format.
Integrations 6
Pre-built integrations with other platforms tell you where this provider already fits in a stack.
Pre-built integrations with other platforms and tools.
Apache Kafka
Native serialization format for Kafka messages via the Confluent Schema Registry and Kafka clients.
Apache Spark
Spark SQL and DataFrames support reading and writing Avro files natively.
Apache Hive
Hive tables can be backed by Avro container files with schema stored in the Hive Metastore.
Confluent Schema Registry
Centralized schema management service for validating and evolving Avro schemas in Kafka ecosystems.
Apache Flink
Flink supports Avro for serialization and deserialization of streaming data.
Apache Hadoop
Avro is a native storage format supported by the Hadoop ecosystem for distributed processing.
Resources
Every other property we hold for Apache Avro — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Company 1
The organization behind the API
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This is an independent, third-party profile of Apache Avro, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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