B
x402audit — MPP Grade B
developer-toolsauditcompliance
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On-chain Activity
2
Total txs
2
7d txs
$1.00
7d volume
$1.00
Total volume
1
Unique payers
0
Unique clients
7-day activity
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Compliance Checks
All paid ops declare 402 response
MUST
10pt
All x-payment-info valid
MUST
10pt
Challenge has Cache-Control: no-store
MUST
5pt
Challenge digest on POST
SHOULD
3pt
Challenge has expires
SHOULD
3pt
Challenge has Problem Details
SHOULD
2pt
Challenge has required params
MUST
5pt
Challenge has WWW-Authenticate
MUST
5pt
Challenge returns 402
MUST
10pt
Correct Content-Type
MUST
5pt
Has Cache-Control on discovery
SHOULD
5pt
Has input schemas
SHOULD
5pt
Has llms.txt
SHOULD
5pt
Has /openapi.json at root
MUST
10pt
Has required top-level fields
MUST
10pt
Served over HTTPS
MUST
10pt
Uses standard categories
SHOULD
2pt
Paid Operations (2)
GET /api/audit dynamic
Compliance + visibility audit for an x402 / MPP server
Returns a 0-100 score with per-check fixes. Nominal $0.001 price for direct API callers; the web UI at /report?url=... is free (server-rendered).
- Amount
- map[amount:0.001000 currency:USD mode:fixed]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[amount:0.001000 currency:USD mode:fixed] protocols: [map[x402:map[asset:USDC network:eip155:8453]] map[mpp:map[currency:USD intent:charge method:tempo]]]
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| url | query | string | Yes | Target domain or origin (e.g. hirescrape.com). |
POST /api/tip dynamic
Tip the maintainers
Dynamic-price pay-what-you-want endpoint. Returns 402 with x402 v2 (USDC on Base) and MPP (USDC on Tempo) challenges. Sign either with your wallet and retry.
- Amount
- map[currency:USD max:1000.00 min:0.10 mode:dynamic]
- Currency
- -
- Method
- Intent
- -
- 402 Declared
- Yes
Non-standard x-payment-info fields:
price: map[currency:USD max:1000.00 min:0.10 mode:dynamic] protocols: [map[x402:map[asset:USDC network:eip155:8453]] map[mpp:map[currency:USD intent:charge method:tempo]]]
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| amount | query | number | No | Tip amount in USD. Defaults to $3. |
Response Schema (200)
| Field | Type | Description |
|---|---|---|
| amount | string | - |
| message | string | - |
| ok | boolean | - |
Payment Methods
- Methods
- tempo (from challenge)
- Intents
- charge (from challenge)
- Currencies (discovery)
- -
- Currency (challenge)
- USDC.e on Tempo (Tempo)
- Multiple Challenges
- No
Recipients
- 0xb5194A98DbDBb7028B585Db26B972e7F0F3f826A
Per-endpoint breakdown
- GET /api/audit
- 0xb5194A98DbDBb7028B585Db26B972e7F0F3f826A
- POST /api/tip
- 0xb5194A98DbDBb7028B585Db26B972e7F0F3f826A
Security
- TLS Version
- TLSv1.3
- Challenge ID Unique
- Yes
- Challenge ID Length
- 43
- Digest Binding
- -
Uptime
- Discovery
- Reachable (373ms)
- Challenge
- Reachable (228ms)
- Last Checked
Schema Completeness
- Paid Operations
- 2
- With Input Schema
- 0
- With Description
- 2
2 missing schema
- GET /api/audit
- POST /api/tip
Documentation
- Homepage
- https://x402audit.dev
- API Reference
- -
- llms.txt
- https://x402audit.dev/llms.txt reachable
Discovery
- OpenAPI URL
- https://x402audit.dev/openapi.json
- OpenAPI Version
- 3.1.0
- Service Version
- 0.1.0
- Document Size
- 3305 bytes
- Document Hash
- 0fd1fda2bb66b94b1652b0a03710dc5e75379ff2031fc003c01e94cb718558f0
Version History (2 snapshots)
- document hash changed (no semantic differences detected)
- new endpoint: GET /api/audit
Scan snapshots
| Date | Grade | Score | Response | Status |
|---|---|---|---|---|
| 2026-04-20 | B | 80% | 1098ms | Up |
| 2026-04-21 | B | 83% | 90ms | Up |