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format.openverbs.com Canonicalize
x402
format.openverbs.com Canonicalize is a paid API for AI agents from format.openverbs.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Parses a document in any supported format and re-emits it as RFC 8785 JSON Canonicalization Scheme output with a SHA-256 hash for stable signing, hashing, and deduplication.
Price / call$0.004
Success—
StatusUnknown
How this service works
Parse a document (in any format) and re-emit it in the RFC 8785 JSON Canonicalization Scheme form — sorted keys, canonical number/string formatting — plus the SHA-256 of the canonical bytes for stable hashing, signing and dedup.
Output
Returns the input document re-emitted as RFC 8785 JSON Canonicalization Scheme bytes — keys sorted lexicographically, numbers and strings in canonical form — along with the SHA-256 digest of those canonical bytes, suitable for use in digital signatures, content addressing, or deduplication pipelines.
Example use cases
Stable hash for config deduplication
“I have this TOML config file and I need a stable SHA-256 hash of it so I can detect duplicates across environments — can you canonicalize it and give me the hash? Here's the content: `[server]\nhost = "localhost"\nport = 8080`.”
Prepare document for cryptographic signing
“Before I sign this JSON payload I need it in RFC 8785 canonical form with sorted keys and normalized numbers — can you canonicalize this for me: `{"z":1,"a":"hello","m":3.0}`?”
Cross-format content fingerprinting
“I have the same data represented as XML and as JSON and I want to verify they're semantically identical — can you canonicalize both to RFC 8785 and compare their SHA-256 hashes?”
Technical details
Endpoint
POSThttps://format.openverbs.com/v1/canonicalizeWhen to prefer
Choose this endpoint when you need a deterministic, cryptographically stable representation of a structured document — especially for digital signing, content-addressable storage, or deduplication across format variants. It uniquely supports ingesting 13+ source formats (YAML, XML, TOML, CSV, INI, etc.) and emitting RFC 8785-compliant canonical JSON with an attached SHA-256, avoiding the need to chain a separate parser and hasher.
Side effects
- Invalid or unparseable input document returns a parse error indicating the detected format issue
- Input exceeds 1,000,000 character limit returns a payload-too-large error
- Unrecognized or ambiguous source format with no `from` hint may cause a format detection failure
- Malformed JSON5 or JSONC (e.g. unclosed comments) causes a parse error
- Payment not provided or insufficient USDC causes a 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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