●
Rubric Protocol — Post-Quantum AI Attestation
Verification PAYMENT-READYpayment-ready until 2026-09-16
Post-quantum attestation and evidence services for AI agents. Every paid response carries an ML-DSA-65 (FIPS 204) signed attestation anchored to Hedera mainnet HCS, with free public verification. Catalog: pay-per-call decision attestation from $0.005, bulk hash anchoring from $0.000027/record, attested gpt-4o-mini inference binding prompt and response hashes to the exact model version, agent operating-history lookups computed from records that cannot be backdated, independent attestation audits with mirror-node confirmation, attested Hedera network facts from $0.001, and a regulatory-change feed for AI systems. A failed mint is never charged.
Pay from $0.001 to $0.50 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
measured since 2026-07-23 (start of our harvest window) · $10.56 all-time · settled via coinbase
VERDICT
ranking generation 3solid 90/100 #10 of 76 in Verification by measured score
What the score read on this service: status online, 100% uptime 30d, 357ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
It is a score inside Verification, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 76 listings, this one among them. That set is wider than the 76 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
ALTERNATIVES IN VERIFICATION
Other Verification services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).
| SERVICE | BAND | SCORE | UPTIME 30D | VOL 30D |
|---|---|---|---|---|
| LION — Verified Company & Compliance Data | strong | 99 | 100% | --- |
| Vibes-Coded Agent Tool API | strong | 94 | 99.9% | --- |
| scvd.store — evidence observatory for the x402 economy | strong | 94 | 100% | $997.11 |
| AEGIS | solid | 93 | 100% | --- |
| Council of AI | solid | 92 | 100% | --- |
5 of 75 other ranked services in Verification
ASSESSMENT
updated 3h agoThe parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 357ms
- avg response
- 312ms
- total checks
- 2,780
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.001 to $0.50 (p5 in Verification)
- price (min)
- $0.001
- price (max)
- $0.50
- category percentile (min)
- p5 in Verification
- category percentile (max)
- p71 in Verification
- endpoints / prices
- 10 / 9
- model
- tiered
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 181d
- registrar
- GoDaddy.com, LLC
- hosting
- custom
- domain created
- 2026-03-08
Identity facts, not a risk score.
traction $7.573 30d · 17 buyers
- volume 30d
- $7.573
- buyers 30d
- 17
- settlements 30d
- 473
- measured since
- 2026-07-23 (start of our harvest window)
- last settlement
- 2026-09-09
- top buyer share
- 58% of 30d volume
- trend 7d vs 30d
- 1.73x the 30d daily rate
- networks
- eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $10.56
- settlements all-time
- 611
- median settlement 30d
- $0.005
- max settlement 30d
- $0.50
- settled via
- coinbase ($7.57, 473 tx)
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
CHANGES
1 in 30dPayout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.
changes schema changed 5d ago (1 in 30d)
schema changed · 5d ago
schema added GET /v1/x402/agent-record/rubric-assert exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 120 {"feePayer":"GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu"}
schema added GET /v1/x402/attested-inference exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 120 {"feePayer":"GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu"}
schema added GET /v1/x402/hedera-facts/all exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 120 {"feePayer":"GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu"}
schema added GET /v1/x402/hedera-facts/exchange-rate exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 120 {"feePayer":"GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu"}
schema added GET /v1/x402/regwatch-feed exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 120 {"feePayer":"GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu"}
schema added GET /v1/x402/verify-audit exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 120 {"feePayer":"GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu"}
WHAT IT DOES
ai-derivedNo AI synthesis has been produced for this service yet.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /v1/x402/agent-record/rubric-assert | $0.005 | Base/Solana | USDC | header | |
| GET | /v1/x402/attested-inference | $0.01 | Base/Solana | USDC | header | |
| GET | /v1/x402/hedera-facts/all | $0.003 | Base/Solana | USDC | header | |
| GET | /v1/x402/hedera-facts/exchange-rate | $0.001 | Base/Solana | USDC | header | |
| GET | /v1/x402/regwatch-feed | $0.05 | Base/Solana | USDC | header | |
| GET | /v1/x402/statement | $0.50 | Base | USDC | header | |
| POST | /v1/x402/tiered-attest | $0.005 | Base | USDC | header | |
| GET | /v1/x402/tiered-attest-batch | $0.035 | Base | USDC | header | |
| GET | /v1/x402/tiered-attest-batch-xl | $0.135 | Base | USDC | header | |
| GET | /v1/x402/verify-audit | $0.002 | Base/Solana | USDC | header |
10 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /v1/x402/agent-record/rubric-assert returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://rubric-protocol.com/v1/x402/agent-record/rubric-assert'
// 402 response (captured by monitor) · 10 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"payTo": "TNUZJJ3JQCGA4QNYDW4VW5CVZ4FWBTGBBEVSFLN6PJT4YEEUSSOX6EXVBM",
"amount": "10000",
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/attested-inference",
"tags": [
"llm",
"inference",
"attestation"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Attested LLM inference: gpt-4o-mini chat completion plus a post-quantum signed, Hedera-anchored attestation binding the ",
"serviceName": "Rubric Protocol"
},
"free_demo": "https://rubric-protocol.com/v1/x402/demo/attested-inference",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"messages": [
{
"role": "user",
"content": "Summarise this filing in three bullets."
}
],
"max_tokens": 500
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"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"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
}
}
}
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"payTo": "TNUZJJ3JQCGA4QNYDW4VW5CVZ4FWBTGBBEVSFLN6PJT4YEEUSSOX6EXVBM",
"amount": "50000",
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/regwatch-feed",
"tags": [
"regulatory",
"compliance",
"feed"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Structured feed of regulatory changes affecting AI systems: jurisdiction, instrument, change type, effective dates, comm",
"serviceName": "Rubric Protocol"
},
"free_demo": "https://rubric-protocol.com/v1/x402/demo/regwatch-feed",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
}
}
}
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"payTo": "TNUZJJ3JQCGA4QNYDW4VW5CVZ4FWBTGBBEVSFLN6PJT4YEEUSSOX6EXVBM",
"amount": "5000",
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/agent-record/rubric-assert",
"tags": [
"reputation",
"agent",
"diligence"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Unforgeable operating history for any AI agent attesting through Rubric Protocol: record count, first-seen date, continu",
"serviceName": "Rubric Protocol"
},
"free_demo": "https://rubric-protocol.com/v1/x402/demo/agent-record",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"agentId": "path segment (required) - the agent identifier"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"agentId"
],
"properties": {
"agentId": {
"type": "string"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
}
}
}
},
{
"error": "Payment required: POST with PAYMENT-SIGNATURE header",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "135000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://rubric-protocol.com/v1/x402/tiered-attest-batch-xl",
"tags": [
"attestation",
"batch",
"audit"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Batch attestation for AI agent decision streams: up to 5000 leaves under one post-quantum ML-DSA-65 (FIPS 204) signed Merkle root, anchored to Hedera mainnet HCS. Per-leaf attestation IDs with free pu",
"serviceName": "Rubric Protocol"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"leaves": [
{
"data": {
"score": 0.91,
"decision": "approve"
}
}
],
"agentId": "acme-underwriter-01"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"vsr": {
"spec": "https://rubric-protocol.com/specs/vsr-v0.4.md"
},
"paid": true,
"settled": true,
"success": true
}
}
},
"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"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"batchId": {
"type": "string"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
},
"accepted": {
"type": "number"
},
"attestationIds": {
"type": "array",
"items": {
"type": "string"
}
},
"paymentReceipt": {
"type": "object"
},
"verifyUrlPattern": {
"type": "string"
}
}
}
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/tiered-attest",
"tags": [
"attestation",
"compliance",
"audit"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Tamper-evident audit log record for an AI agent decision: signed compliance evidence anchored to public consensus for in",
"serviceName": "Rubric Protocol"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"data": "object (optional) — attested content",
"agentId": "string (optional)"
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"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",
"properties": {
"data": {
"type": "object",
"description": "Content to attest"
},
"agentId": {
"type": "string",
"description": "Caller-supplied agent identifier"
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"POST"
]
},
"bodyType": {
"enum": [
"json"
]
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
}
}
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"data": "object (optional) — attested content",
"agentId": "string (optional)"
}
},
"output": {
"paid": "boolean",
"topic": "string",
"settled": "boolean",
"success": "boolean",
"algorithm": "ML-DSA-65",
"verifyUrl": "string — free public verification",
"x402Payment": "object — payment block injected into your `data` before committing. Returned because the commitment covers it and you cannot reconstruct it: {x402Version, scheme, network, asset, amountAtomic, payer}",
"attestationId": "string",
"commitmentSalt": "string — opening salt; recompute SHA-256(salt + RFC8785({...data, x402Payment})) to verify. Not the decryption key.",
"payloadCommitment": "string — commitment to your `data` PLUS `x402Payment`, not to `data` alone"
}
}
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"payTo": "TNUZJJ3JQCGA4QNYDW4VW5CVZ4FWBTGBBEVSFLN6PJT4YEEUSSOX6EXVBM",
"amount": "2000",
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/verify-audit",
"tags": [
"verification",
"audit"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Independent audit of a Rubric attestation: signature validity, HCS sequence, and direct Hedera mirror-node confirmation.",
"serviceName": "Rubric Protocol"
},
"free_demo": "https://rubric-protocol.com/v1/x402/demo/verify-audit",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"attestationId": "a4cdbce7-05c6-4325-9ac6-e711f480887e"
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"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"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
}
}
}
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu",
"amount": "3000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"payTo": "TNUZJJ3JQCGA4QNYDW4VW5CVZ4FWBTGBBEVSFLN6PJT4YEEUSSOX6EXVBM",
"amount": "3000",
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/hedera-facts/all",
"tags": [
"hedera",
"oracle",
"data"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "All thirteen attested Hedera network facts in one call at GET /v1/x402/hedera-facts/all, each carrying its own attestati",
"serviceName": "Rubric Protocol"
},
"free_demo": "https://rubric-protocol.com/v1/x402/demo/hedera-facts",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"facts": {
"type": "object"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
},
"operator": {
"type": "string"
}
}
}
},
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "GBfJMhGiGJeWDcve1G673hEp8DLmMFomvSEHMzRfmcJu",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"payTo": "TNUZJJ3JQCGA4QNYDW4VW5CVZ4FWBTGBBEVSFLN6PJT4YEEUSSOX6EXVBM",
"amount": "1000",
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/hedera-facts/exchange-rate",
"tags": [
"hedera",
"oracle",
"data"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response",
"serviceName": "Rubric Protocol"
},
"free_demo": "https://rubric-protocol.com/v1/x402/demo/hedera-facts",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"fact": "path segment (required) - one of exchange-rate|gas-fees|supply|nodes|latest-tx|throughput|staking|usdc-supply|hcs-activity|treasury-balance|anchor-cost|rubric-activity|topic-state"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"fact"
],
"properties": {
"fact": {
"type": "string"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
}
}
}
},
{
"error": "Payment required: POST with PAYMENT-SIGNATURE header",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "35000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://rubric-protocol.com/v1/x402/tiered-attest-batch",
"tags": [
"attestation",
"batch",
"audit"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Batch attestation for AI agent decision streams: up to 1000 leaves under one post-quantum ML-DSA-65 (FIPS 204) signed Merkle root, anchored to Hedera mainnet HCS. Per-leaf attestation IDs with free pu",
"serviceName": "Rubric Protocol"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"leaves": [
{
"data": {
"score": 0.91,
"decision": "approve"
}
}
],
"agentId": "acme-underwriter-01"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"vsr": {
"spec": "https://rubric-protocol.com/specs/vsr-v0.4.md"
},
"paid": true,
"settled": true,
"success": true
}
}
},
"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"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"type": "object",
"properties": {
"paid": {
"type": "boolean"
},
"batchId": {
"type": "string"
},
"settled": {
"type": "boolean"
},
"success": {
"type": "boolean"
},
"accepted": {
"type": "number"
},
"attestationIds": {
"type": "array",
"items": {
"type": "string"
}
},
"paymentReceipt": {
"type": "object"
},
"verifyUrlPattern": {
"type": "string"
}
}
}
},
{
"error": "Payment required: POST with PAYMENT-SIGNATURE header",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xaB6731A0BcDf511c2842C768a03448075aB654ca",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"contact": "/contact?topic=x402",
"gateway": "/docs.html#specifications",
"resource": {
"url": "https://rubric-protocol.com/v1/x402/statement",
"tags": [
"billing",
"statement",
"audit"
],
"iconUrl": "https://rubric-protocol.com/favicon.ico",
"mimeType": "application/json",
"description": "Signed monthly x402 spend statement for one agent: totals, per-payment lines, Merkle root. The statement is itself an ML",
"serviceName": "Rubric Protocol"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"format": "json",
"period": "2026-07",
"agentId": "acme-underwriter-01"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"vsr": {
"spec": "https://rubric-protocol.com/specs/vsr-v0.4.md"
},
"paid": true,
"settled": true,
"success": true
}
}
},
"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"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"format": {
"type": "string"
},
"example": {}
},
"additionalProperties": false
}
}
},
"discoverable": true
}
},
"x402Version": 2,
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"format": "string (optional) - 'json' (default) or 'csv'",
"period": "string (required) - YYYY-MM",
"agentId": "string (required) - agent whose spend to report"
}
},
"output": {
"paid": "boolean",
"lines": "array - per-payment ledger lines",
"topic": "string",
"settled": "boolean",
"success": "boolean",
"algorithm": "ML-DSA-65",
"statement": "object - totals, period, merkleRoot",
"verifyUrl": "string - free public verification",
"attestationId": "string"
}
}
}
] OVER TIME
All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/rubric-protocol-post-quantum-ai-attestation/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
UPTIME
30d UPTIME 100%
RESPONSE TIME
AVG RESP 312ms
PRICE (captured 402, USD)
Median across 10 endpoints. Use the selector to isolate one.
SUB-SCORES (uptime + x402 compliance)
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
PILLARS OVER TIME (measured)
price percentile in Verification
site signals present (of 6)
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-09-07 · last up 2026-09-09
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 215ms
● OK 122ms
● OK 173ms
● OK 238ms
● OK 266ms
● OK 230ms
● OK 271ms
● OK 250ms
● OK 245ms
● OK 273ms
● OK 212ms
● OK 205ms
● OK 208ms
● OK 234ms
● OK 272ms
● OK 297ms
● OK 217ms
● OK 245ms
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/rubric-protocol-post-quantum-ai-attestation?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/rubric-protocol-post-quantum-ai-attestation.svg" alt="Rubric Protocol — Post-Quantum AI Attestation listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/rubric-protocol-post-quantum-ai-attestation?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/rubric-protocol-post-quantum-ai-attestation?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/rubric-protocol-post-quantum-ai-attestation.svg?data=uptime" alt="Rubric Protocol — Post-Quantum AI Attestation uptime on x402-list" height="28"> </a>