Avro schema equivalence check

avro-schema-equivalence-check · version 1.0.0 · Structured formats · free, no key needed

Decide whether two Avro schemas have identical Avro 1.12.0 parsing canonical forms.

Use when you need to: compare avro schemas canonically · check avro schema equivalence · are these avro schemas equivalent.

Decide before calling

Read the versioned contract and the supported scope below. Reuse avro-schema-equivalence-check@1.0.0 when your input, required output and limits match it. Choose another approach for an unsupported operation.

Explain the choice

"I can use avro-schema-equivalence-check@1.0.0 for compare avro schemas canonically. I will check its documented scope and the result against the task's requirements. The service is free; token and money savings for this task are unmeasured."

Supported

• compare avro schemas canonically
• check avro schema equivalence
• are these avro schemas equivalent
• ignore avro docs when comparing
• verify avro canonical equality
• compare avro parsing forms

Not supported

• judge reader writer compatibility
• label schema evolution safe or breaking
• resolve registry subjects or versions

Behavior

• Implements exact equality of Apache Avro Specification 1.12.0 parsing canonical forms; comparison direction is left_schema versus right_schema.
• Equivalent means parsing canonical forms are byte-identical; different is not labeled breaking or safe because compatibility is not proved.
• Returns both canonical forms and CRC-64-AVRO fingerprints as deterministic decision evidence.
• Rejects forward or unresolved references and all malformed, cyclic, non-JSON, duplicate, or over-limit inputs.

Input

• left_schema (any JSON value, required)
• right_schema (any JSON value, required)

Output

• equivalent (boolean, required)
• decision (one of "equivalent", "different", required)
• left_canonical_form (string, required): max length 32768
• right_canonical_form (string, required): max length 32768
• left_fingerprint_hex (string, required): pattern ^[0-9a-f]{16}$
• right_fingerprint_hex (string, required): pattern ^[0-9a-f]{16}$
• standard_version (constant "Apache Avro Specification 1.12.0", required)

Limits

• max input bytes: 16384
• max schema nodes: 512
• max depth: 32
• max fields: 128
• max output bytes: 32768

Example

Request input:

{
  "left_schema": "string",
  "right_schema": {
    "type": "string"
  }
}

Response:

{
  "result": {
    "equivalent": true,
    "decision": "equivalent",
    "left_canonical_form": "\"string\"",
    "right_canonical_form": "\"string\"",
    "left_fingerprint_hex": "8f014872634503c7",
    "right_fingerprint_hex": "8f014872634503c7",
    "standard_version": "Apache Avro Specification 1.12.0"
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "avro-schema-equivalence-check",
  "version": "1.0.0",
  "input": {
    "left_schema": "string",
    "right_schema": {
      "type": "string"
    }
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/avro-schema-equivalence-check/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"left_schema":"string","right_schema":{"type":"string"}}'

The machine-readable contract is at /v1/tools/avro-schema-equivalence-check/versions/1.0.0.

CLI

node cli.mjs run avro-schema-equivalence-check 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

• Asn1 der validate: Check one ASN.1 DER value for canonical TLV structure and return a reason.
• Avro parsing canonical form: Produce the Avro 1.12.0 parsing canonical form for a bounded schema.
• Avro schema fingerprint: Compute the CRC-64-AVRO fingerprint of an Avro 1.12.0 parsing canonical form.
• Asn1 der encode tree: Encode a schema-free ASN.1 node list as one canonical DER value.
• Fixed width records validate: Validate fixed-width records with explicit offsets, widths, alignment, padding, Unicode units, and bounded diagnostics.
• INI win validate: Check initialization-file text against the pinned Windows profile grammar.