A

Openai via Tempo — MPP Grade A

https://openai.mpp.tempo.xyz 90% (95/105) via https://mpp.tempo.xyz
Preview responses and set spending limits for this service through use.mpp.land Free budget controls, response samples, and reliability routing.

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
3 issues
  • /openapi.json returned HTTP 404
  • Discovery via umbrella host https://mpp.tempo.xyz (own /openapi.json unavailable)
  • POST endpoint challenge missing digest parameter (SHOULD per spec)

Paid Operations (6)

POST /v1/responses dynamic
Amount
dynamic
Currency
-
Method
tempo
Intent
charge
402 Declared
Yes
POST /v1/chat/completions dynamic
Amount
dynamic
Currency
-
Method
tempo
Intent
charge
402 Declared
Yes
POST /v1/embeddings dynamic
Amount
dynamic
Currency
-
Method
tempo
Intent
charge
402 Declared
Yes
POST /v1/images/generations dynamic
Amount
dynamic
Currency
-
Method
tempo
Intent
charge
402 Declared
Yes
POST /v1/audio/transcriptions dynamic
Amount
dynamic
Currency
-
Method
tempo
Intent
charge
402 Declared
Yes
POST /v1/audio/speech dynamic
Amount
dynamic
Currency
-
Method
tempo
Intent
charge
402 Declared
Yes

Payment Methods

Methods
tempo
Intents
charge
Currencies (discovery)
-
Currency (challenge)
USDC.e on Tempo Mainnet Presto (Tempo Mainnet Presto)
Multiple Challenges
Yes

Recipients

  • 0xca4e835F803cB0b7C428222B3A3B98518d4779Fe
Per-endpoint breakdown
POST /v1/audio/speech
0xca4e835F803cB0b7C428222B3A3B98518d4779Fe
POST /v1/audio/transcriptions
0xca4e835F803cB0b7C428222B3A3B98518d4779Fe
POST /v1/chat/completions
0xca4e835F803cB0b7C428222B3A3B98518d4779Fe
POST /v1/embeddings
0xca4e835F803cB0b7C428222B3A3B98518d4779Fe
POST /v1/images/generations
0xca4e835F803cB0b7C428222B3A3B98518d4779Fe
POST /v1/responses
0xca4e835F803cB0b7C428222B3A3B98518d4779Fe

Security

TLS Version
TLSv1.3
Challenge ID Unique
Yes
Challenge ID Length
43
Digest Binding
-

Uptime

Discovery
Reachable (115ms)
Challenge
Reachable (315ms)
Last Checked

Schema Completeness

Paid Operations
6
With Input Schema
0
With Description
0
6 missing schema
  • POST /v1/responses
  • POST /v1/chat/completions
  • POST /v1/embeddings
  • POST /v1/images/generations
  • POST /v1/audio/transcriptions
  • POST /v1/audio/speech

Documentation

Homepage
-
API Reference
-
llms.txt
/llms.txt

Discovery

OpenAPI URL
https://mpp.tempo.xyz/openapi.json
OpenAPI Version
3.1.0
Service Version
1.0.0
Document Size
21824 bytes
Document Hash
d254390b023caaf50d9d6e509f604afe8468af4d117230f218b2d44e0a928285

Version History (7 snapshots)

Scan snapshots
Date Grade Score Response Status
2026-06-14 A 90% 1020ms Up
2026-06-15 A 90% 162ms Up
2026-06-16 A 90% 382ms Up
2026-06-17 A 90% 145ms Up
2026-06-18 A 90% 886ms Up
2026-06-19 A 90% 154ms Up
2026-06-20 A 90% 226ms Up