Discover / phion.systems

PHION Inference

■ Challenge detected

Bounded low-cost inference with a signed delivery receipt

x402
Arbitrum
Base
Polygon
Solana
USDC
Verification

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://phion.systems/v1/paid

POST/trust/task-lease-guardNo price listedVerify active task lease ownership before execution or mutation
POST/commercial/enrichNo price listedProvider-backed entity enrichment with explicit match and limitations
POST/trust/provider-quality-predictorNo price listedEstimate success, quality, latency and cost with sample-aware uncertainty
POST/trust/agent-approval-relayNo price listedBind a time-limited human approval decision to purpose and exact payload
POST/trust/trust-anomaly-detectorNo price listedDetect material drift between comparable trust vectors without asserting misconduct
POST/trust/company-enrichment-evidenceNo price listedResolve a company through People Data Labs with free input preflight and signed, limitation-aware evidence
POST/trust/cross-agent-receipt-bundleNo price listedValidate and bundle agent-bound receipt evidence without claiming external truth
POST/trust/task-checkpoint-evidenceNo price listedBind task state, sequence and checkpoint hash in signed evidence
POST/trust/reputation-update-receiptNo price listedRecommend an auditable bounded reputation change from diverse verified outcome evidence
POST/trust/agent-session-continuityNo price listedVerify hash-linked session identity and monotonic sequence continuity
POST/trust/autonomous-procurementNo price listedRecommend an eligible provider under a mandate without executing a purchase
POST/trust/cross-protocol-receiptNo price listedBind consistent protocol receipt commitments into one auditable bundle
POST/rwa/nav-reserveNo price listedCompare declared NAV, reserves and collateral with independently retrieved sources
POST/trust/a2a-transaction-bridgeNo price listedBind A2A task identity to a transaction while preserving explicit authority gaps
POST/trust/delegated-credential-guardNo price listedEnforce delegated credential scope, requester and expiry without receiving raw credentials
POST/commercial/intelligenceNo price listedEvidence-grounded research synthesis with citations and signed delivery
POST/rwa/transaction-assuranceNo price listedVerify asset, payment, delivery and transfer restrictions as one transaction
POST/trust/payment-optimizerNo price listedRank only tested payment routes under explicit cost and latency constraints
POST/trust/mcp-transaction-gatewayNo price listedBind MCP tool-call identity to a transaction without silently granting authority
POST/trust/service-failover-selectorNo price listedSelect the highest-priority healthy compatible provider without silent fallback
POST/commercial/inferenceNo price listedBounded low-cost inference with a signed delivery receipt
POST/trust/multi-source-fact-bundleNo price listedBundle independent source observations while exposing agreement and disagreement
POST/trust/onchain-evidenceNo price listedCapture supplied public explorer or RPC evidence with immutable content hashes
POST/rwa/asset-due-diligenceNo price listedEvidence-backed issuer, contract, custody and legal-document coverage

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 24 of 74 listed 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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