Discover / phion.systems
PHION Inference
■ Challenge detectedBounded low-cost inference with a signed delivery receipt
- Listed price
- $0.001
- Challenge detected
- 9 of the last 9 checks
- Median response
- 129 ms
- Last checked
- 16 Oct, 16:44 UTC
- In our index since
- 26 Sept 2026
Endpoint
curl -i https://phion.systems/v1/paid/commercial/inference # 402 Payment Required: pay with an x402 client (USDC on Arbitrum), # then send the same request again with the payment attached.
74 listed endpoints · on x402 Bazaar
Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.
Base URLhttps:
- POST/paid
/trust /payment-delivery-atomicityNo price listedDetect paid-without-delivery and delivered-without-payment states - POST/paid
/trust /document-to-verified-jsonNo price listedNormalize public text, HTML, JSON or XML documents into source-backed JSON - POST/paid
/trust /erc8004-reputation-intelligenceNo price listedAggregate diverse verified observations with mandatory low-sample abstention - POST/paid
/trust /contact-enrichment-evidenceNo price listedResolve a business contact through People Data Labs with free input preflight and signed evidence - POST/paid
/trust /delegated-spend-policyNo price listedFail closed on inactive mandates and per-transaction or remaining-budget violations - POST/paid
/trust /dynamic-service-pricingNo price listedPropose capped shadow prices without changing live prices - POST/executeNo price listedExecute any selected PHION service with a budget, persistent idempotency, acceptance checks and a signed completion envelope
- POST/paid
/trust /counterparty-risk-preflightNo price listedDeterministic counterparty policy decision using supplied reputation evidence and transaction limits - POST/paid
/trust /live-data-freshnessNo price listedTest whether source observations meet an explicit maximum-age policy - POST/paid
/trust /execution-cost-estimatorNo price listedCalculate a fail-closed maximum cost across an agent execution plan - POST/paid
/trust /proof-of-serviceNo price listedCommit request, authority, execution, payment and delivery evidence in one auditable proof - POST/paid
/trust /economic-loop-detectorNo price listedDetect self and reciprocal transaction patterns without treating correlation as fraud - POST/paid
/trust /market-data-snapshotNo price listedCapture a timestamped public market-data snapshot with freshness and provenance - POST/paid
/trust /capability-negotiation-preflightNo price listedCompare required and offered agent capabilities before execution - POST/paid
/trust /oauth-issuer-binding-evidenceNo price listedBind verified OAuth issuer and audience claims to the intended receiver - POST/paid
/schema-normalizeNo price listedNormalize an agent payload to a PHION service schema without changing payment-critical values; return a signed repair receipt - POST/paid
/trust /mcp-catalog-cache-guardNo price listedBind MCP catalog digest to TTL, scope and revalidation policy - POST/paid
/trust /quote-freshness-guardNo price listedReject x402 quotes that cannot remain valid through authorization and retry - POST/paid
/trust /ap2-mandate-bridgeNo price listedMap mandate fields for review without claiming AP2 authorization or supported production control - POST/paid
/trust /service-gap-detectorNo price listedIdentify capability shortages from verified demand and provider supply - POST/paid
/trust /capability-verificationNo price listedCompare claimed capabilities with independently evidenced successful observations - POST/paid
/trust /sybil-reputation-guardNo price listedAssess multiple manipulation signals with uncertainty and mandatory abstention - POST/paid
/rwa /complianceNo price listedDeterministic eligibility and transfer-policy decision - POST/paid
/trust /transaction-risk-scoreNo price listedEstimate evidence-supported probability and expected loss for decision support - POST/paid
/commercial /enrich-basicNo price listedBounded direct observation of a public company website with hashes, injection screening and signed delivery
A dash means the listing gives no price or method. Copy buttons copy the full URL.
Showing 25 of 74 listed endpoints. Next endpoints First endpoints
Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/phion.systems
Recent checks
2 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026
All 9 checks
| When (UTC) | Result | HTTP | Response |
|---|---|---|---|
| 16 Oct, 16:44 UTC | Challenge detected | 402 | 116ms |
| 15 Oct, 08:20 UTC | Challenge detected | 402 | 124ms |
| 14 Oct, 00:19 UTC | Challenge detected | 402 | 320ms |
| 11 Oct, 22:04 UTC | Challenge detected | 402 | 127ms |
| 10 Oct, 06:39 UTC | Challenge detected | 402 | 129ms |
| 9 Oct, 03:33 UTC | Challenge detected | 402 | 224ms |
| 7 Oct, 21:31 UTC | Challenge detected | 402 | 130ms |
| 6 Oct, 21:30 UTC | Challenge detected | 402 | 182ms |
| 2 Oct, 05:04 UTC | Challenge detected | 402 | 129ms |
Questions
Did our last probe detect a payment challenge?
At our last probe on 16 Oct, 16:44 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.
What price is recorded for PHION Inference?
Its listed price is $0.001.
What payment terms does PHION Inference advertise?
The listing advertises x402, Arbitrum, Base, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.
Where is PHION Inference listed?
In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.
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