canonicalhash-production.up.railway.app
No description published for this endpoint.
OtherLiveeip155:8453Exactvia facilitator:thirdweb
Settlements · 30d
8↓ 100%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.03
Verified settled volume
8 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xfBF6eb2d6eF4D4a2F528aDEF116d641CA5E89681The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xfBF6eb2d6eF4D4a2F528aDEF116d641CA5E89681",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://canonicalhash-production.up.railway.app/v1/canonicalize",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"payload": {
"note": "example",
"amount": 1.5,
"user_id": 42
},
"algorithm": "sha256"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"hash": "60196f74f027a2b2a0c2eb1143dd6cc1a2319c87479a846ed0d140e4bc2403e7",
"spec": "RFC 8785",
"signer": "0x0326f9783c9C9b9De8b9dC63cCCefDC75A95C7cD",
"success": true,
"chain_id": 8453,
"algorithm": "sha256",
"canonical": "{\"amount\":1.5,\"note\":\"example\",\"user_id\":42}",
"issued_at": "2026-10-16T00:00:00.000Z",
"signature": "0x8b4e1f...truncated",
"hash_algorithm": "sha256",
"attestation_type": "EIP-712",
"canonicalization": "RFC 8785 (JCS)",
"input_size_bytes": 47,
"canonical_size_bytes": 39
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"payload"
],
"properties": {
"payload": {
"description": "Any JSON value to canonicalize."
},
"algorithm": {
"enum": [
"sha256",
"sha512"
],
"type": "string",
"description": "Hash algorithm. Default: sha256."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"success",
"canonical",
"hash",
"algorithm",
"spec"
],
"properties": {
"hash": {
"type": "string",
"description": "Hex digest of the canonical bytes."
},
"spec": {
"type": "string",
"description": "Canonicalization spec — always RFC 8785."
},
"signer": {
"type": "string",
"description": "EIP-712 signer address."
},
"success": {
"type": "boolean",
"description": "True when the hash was produced."
},
"chain_id": {
"type": "integer",
"description": "Chain ID the attestation is signed for (8453 = Base)."
},
"algorithm": {
"enum": [
"sha256",
"sha512"
],
"type": "string",
"description": "Hash algorithm used."
},
"canonical": {
"type": "string",
"description": "RFC 8785 canonical bytes of the input payload."
},
"issued_at": {
"type": "string",
"description": "ISO-8601 timestamp of the attestation."
},
"signature": {
"type": "string",
"description": "EIP-712 signature over the hash and canonical bytes."
},
"hash_algorithm": {
"type": "string",
"description": "Hash algorithm identifier (mirror of algorithm)."
},
"attestation_type": {
"type": "string",
"description": "Attestation scheme, e.g. EIP-712."
},
"canonicalization": {
"type": "string",
"description": "Canonicalization variant, e.g. RFC 8785 (JCS)."
},
"input_size_bytes": {
"type": "integer",
"description": "Byte size of the input as received."
},
"canonical_size_bytes": {
"type": "integer",
"description": "Byte size of the canonical form."
}
}
}
}
}
}
},
"routeTemplate": "/v1/canonicalize"
}
},
"description": "JSON canonicalization — canonicalize structured data with RFC 8785 JCS; return canonical JSON text, UTF-8 byte length, and SHA-256 hash for integrity checks, signature preparation, and deduplication. Includes an EIP-712 signed attestation. Use when an agent needs an idempotency key, cache key, dedup hash, or verifiable commitment. $0.002 per call. Free verification at POST /v1/verify.",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {},
"payTo": "8EBMNvPdbSxjncYKDc8kXwLQkqGeY8L94CWuikGuRQDp",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://canonicalhash-production.up.railway.app/v1/canonicalize",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"payload": {
"note": "example",
"amount": 1.5,
"user_id": 42
},
"algorithm": "sha256"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"hash": "60196f74f027a2b2a0c2eb1143dd6cc1a2319c87479a846ed0d140e4bc2403e7",
"spec": "RFC 8785",
"signer": "0x0326f9783c9C9b9De8b9dC63cCCefDC75A95C7cD",
"success": true,
"chain_id": 8453,
"algorithm": "sha256",
"canonical": "{\"amount\":1.5,\"note\":\"example\",\"user_id\":42}",
"issued_at": "2026-10-16T00:00:00.000Z",
"signature": "0x8b4e1f...truncated",
"hash_algorithm": "sha256",
"attestation_type": "EIP-712",
"canonicalization": "RFC 8785 (JCS)",
"input_size_bytes": 47,
"canonical_size_bytes": 39
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"payload"
],
"properties": {
"payload": {
"description": "Any JSON value to canonicalize."
},
"algorithm": {
"enum": [
"sha256",
"sha512"
],
"type": "string",
"description": "Hash algorithm. Default: sha256."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"success",
"canonical",
"hash",
"algorithm",
"spec"
],
"properties": {
"hash": {
"type": "string",
"description": "Hex digest of the canonical bytes."
},
"spec": {
"type": "string",
"description": "Canonicalization spec — always RFC 8785."
},
"signer": {
"type": "string",
"description": "EIP-712 signer address."
},
"success": {
"type": "boolean",
"description": "True when the hash was produced."
},
"chain_id": {
"type": "integer",
"description": "Chain ID the attestation is signed for (8453 = Base)."
},
"algorithm": {
"enum": [
"sha256",
"sha512"
],
"type": "string",
"description": "Hash algorithm used."
},
"canonical": {
"type": "string",
"description": "RFC 8785 canonical bytes of the input payload."
},
"issued_at": {
"type": "string",
"description": "ISO-8601 timestamp of the attestation."
},
"signature": {
"type": "string",
"description": "EIP-712 signature over the hash and canonical bytes."
},
"hash_algorithm": {
"type": "string",
"description": "Hash algorithm identifier (mirror of algorithm)."
},
"attestation_type": {
"type": "string",
"description": "Attestation scheme, e.g. EIP-712."
},
"canonicalization": {
"type": "string",
"description": "Canonicalization variant, e.g. RFC 8785 (JCS)."
},
"input_size_bytes": {
"type": "integer",
"description": "Byte size of the input as received."
},
"canonical_size_bytes": {
"type": "integer",
"description": "Byte size of the canonical form."
}
}
}
}
}
}
},
"routeTemplate": "/v1/canonicalize"
}
},
"description": "JSON canonicalization — canonicalize structured data with RFC 8785 JCS; return canonical JSON text, UTF-8 byte length, and SHA-256 hash for integrity checks, signature preparation, and deduplication. Includes an EIP-712 signed attestation. Use when an agent needs an idempotency key, cache key, dedup hash, or verifiable commitment. $0.002 per call. Free verification at POST /v1/verify.",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://canonicalhash-production.up.railway.app/v1/canonicalize",
"tags": [
"json",
"canonicalization",
"rfc8785",
"hash",
"sha256",
"sha512",
"eip712",
"attestation",
"idempotency",
"cache-key",
"deduplication",
"verifiable-commitment"
],
"iconUrl": "https://canonicalhash-production.up.railway.app/favicon.ico",
"mimeType": "application/json",
"description": "JSON canonicalization — canonicalize structured data with RFC 8785 JCS; return canonical JSON text, UTF-8 byte length, and SHA-256 hash for integrity checks, signature preparation, and deduplication. Includes an EIP-712 signed attestation. Use when an agent needs an idempotency key, cache key, dedup hash, or verifiable commitment. $0.002 per call. Free verification at POST /v1/verify.",
"serviceName": "canonicalhash"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"payload": {
"note": "example",
"amount": 1.5,
"user_id": 42
},
"algorithm": "sha256"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"hash": "60196f74f027a2b2a0c2eb1143dd6cc1a2319c87479a846ed0d140e4bc2403e7",
"spec": "RFC 8785",
"signer": "0x0326f9783c9C9b9De8b9dC63cCCefDC75A95C7cD",
"success": true,
"chain_id": 8453,
"algorithm": "sha256",
"canonical": "{\"amount\":1.5,\"note\":\"example\",\"user_id\":42}",
"issued_at": "2026-10-16T00:00:00.000Z",
"signature": "0x8b4e1f...truncated",
"hash_algorithm": "sha256",
"attestation_type": "EIP-712",
"canonicalization": "RFC 8785 (JCS)",
"input_size_bytes": 47,
"canonical_size_bytes": 39
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"payload"
],
"properties": {
"payload": {
"description": "Any JSON value to canonicalize."
},
"algorithm": {
"enum": [
"sha256",
"sha512"
],
"type": "string",
"description": "Hash algorithm. Default: sha256."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"success",
"canonical",
"hash",
"algorithm",
"spec"
],
"properties": {
"hash": {
"type": "string",
"description": "Hex digest of the canonical bytes."
},
"spec": {
"type": "string",
"description": "Canonicalization spec — always RFC 8785."
},
"signer": {
"type": "string",
"description": "EIP-712 signer address."
},
"success": {
"type": "boolean",
"description": "True when the hash was produced."
},
"chain_id": {
"type": "integer",
"description": "Chain ID the attestation is signed for (8453 = Base)."
},
"algorithm": {
"enum": [
"sha256",
"sha512"
],
"type": "string",
"description": "Hash algorithm used."
},
"canonical": {
"type": "string",
"description": "RFC 8785 canonical bytes of the input payload."
},
"issued_at": {
"type": "string",
"description": "ISO-8601 timestamp of the attestation."
},
"signature": {
"type": "string",
"description": "EIP-712 signature over the hash and canonical bytes."
},
"hash_algorithm": {
"type": "string",
"description": "Hash algorithm identifier (mirror of algorithm)."
},
"attestation_type": {
"type": "string",
"description": "Attestation scheme, e.g. EIP-712."
},
"canonicalization": {
"type": "string",
"description": "Canonicalization variant, e.g. RFC 8785 (JCS)."
},
"input_size_bytes": {
"type": "integer",
"description": "Byte size of the input as received."
},
"canonical_size_bytes": {
"type": "integer",
"description": "Byte size of the canonical form."
}
}
}
}
}
}
},
"routeTemplate": "/v1/canonicalize"
}
},
"x402Version": 2,
"maxTimeoutSeconds": 60
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.002USDC≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0xfBF6…89681. The signed payment is good for 1 minute.
- Paid to
- 0xfBF6…89681
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 2000 smallest units
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xfBF6eb2d6eF4D4a2F528aDEF116d641CA5E89681",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://canonicalhash-production.up.railway.app/v1/canonicalize",
"description": "",
"maxAmountRequired": "2000",
"maxTimeoutSeconds": 60
}
]Provenance
- Seen in the source catalog
- 2026-10-18 00:18Z
- Last indexed by Roundhouse
- 2026-10-21 13:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-21 14:46Z
- x402 version
- 1
- Max timeout
- 60s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service canonicalhash-production.up.railway.app and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=canonicalhash-production.up.railway.app' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://canonicalhash-production.up.railway.app/v1/canonicalize, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.