PayPerByte

Name: PayPerByte
Author: PayPerByte

AgentA2A

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30-day availability111/112 checks ok

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What the publisher says

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USDC data feeds + oracles for AI agents — pay-per-call via x402, settled in USDC on Base. Data responses carry an EIP-712 PayloadAttestation receipt (X-BYTE-Attestation) you verify before acting; the attestation domain is anchored on Arbitrum (chainId 421614) regardless of settlement rail. Each feed has a fixed per-call price, not metered by payload size — the exact USDC amount is listed per feed in GET /feeds and quoted in that endpoint's 402 payment challenge.

generalx402usdcbasecommercelegalfinancial

Declared skills

Weather (US, multi-city) — NWS weather forecasts for 5 US cities (NYC, LA, Chicago, Houston, Miami)
Earthquakes — USGS recent earthquakes worldwide (M2.5+)
Runtime EOL — End-of-life dates and status for language runtimes, frameworks, OSes (endoflife.date)
Security Advisories Digest — Recent CVE highlights + CISA known-exploited-vulnerability entries, relayed from public sources (NVD, CISA KEV)
Address Reputation Oracle — Know-Your-Agent (KYA) counterparty screening — reputation pillar. Agentic-payments go/no-go verdict: synchronous signed ALLOW/WARN/BLOCK for (domain, receiving address, amount, chain) BEFORE releasing USDC. ar-v1 ruleset over RDAP/TLS/DNS/Wayback domain signals + on-chain receiving-address signals + curated known-bad blocklist. The verdict carries an embedded EIP-712 PayloadAttestation — recompute keccak256(answer) and recover the signer before acting. Scope: screens the counterparty tuple you …
Package Verdict Oracle — Signed ALLOW/WARN/BLOCK on installing a package@version: OSV.dev malicious-corpus + typosquat distance + registry signals. Verify before you install.
Sanctions Screen Oracle — Know-Your-Agent (KYA) counterparty screening — sanctions pillar. Signed, version-pinned OFAC SDN + Consolidated screening on an address or name; every answer embeds the pinned list-state (date + sha256) it was judged against. Primary source: official U.S. Treasury Sanctions List Service exports incl. the digital-currency address annex, parsed and content-sha256-pinned first-party — not a resold vendor list. Scope: screens the counterparty you supply — not identity verification of the calling ag…
Reasoning Verdict Oracle (local LLM) — Verify-before-act risk oracle: POST an action context (message, payload, proposal, payee, tool-call) and get a signed ALLOW/WARN/BLOCK/ABSTAIN verdict + 0-100 safe-to-proceed score + reasons from a LOCAL model (no data egress). The verdict carries an embedded EIP-712 PayloadAttestation — recompute keccak256(answer) and recover the signer before acting. Advisory: the receipt proves provenance/integrity, not correctness.
Merchant Screen Oracle — Know-Your-Agent (KYA) counterparty screening — merchant pillar. Pre-settlement merchant screen: signed ALLOW/WARN/BLOCK on a (domain, payTo, observed price) BEFORE an agent settles an x402 payment. ms-v1 ruleset over first-party signals measured at query time — RDAP domain age, live TLS handshake (cert age, issuer, SAN match), off-domain redirect probe, brand-similarity distance vs a committed known-brand corpus, and the merchant's own advertised x402 manifest price. Method disclosed per field;…
Positioning Snapshot Oracle — Cross-venue perp positioning (funding + open interest) from Hyperliquid, dYdX v4, Aevo; raw fields, abstains honestly where a venue lacks data.
CCTP Attestation Latency Oracle — Measured Circle CCTP v2 attestation latency, reported as separate Fast and Standard distributions — never blended, since the two settlement paths differ by roughly two orders of magnitude (~8s vs ~15-19min) and a single percentile would describe neither. Built from first-party polling of real burns on Base, Arbitrum, and Optimism: every figure is a BOUNDED observation (burn -> first poll that saw the attestation complete), never an exact measurement, and the bound width ships alongside every di…
Receipt-Anchored Regime Signal — BTC/ETH regime classification (trend_up/trend_down/range/high_vol) and a realized-vol above/below call, horizon 4h or 24h. Every response is bound to a signed EIP-712 DeliveryReceipt anchored on Base via EAS; the scoring rule is published and deterministic against public Chainlink rounds, independently recomputable by anyone — see https://x402.payperbyte.io/methodology and https://x402.payperbyte.io/track-record — v1-baseline model: a deterministic persistence/threshold rule, not a trained mode…

kind A2A Agent Card

name A2A Agent Card

summary A2A Agent Card

version A2A Agent Card

description A2A Agent Card

homepageUrl A2A Agent Card

publisherUrl A2A Agent Card

publisherName A2A Agent Card

Provenance

Where this record came from

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A2A Agent Cardhttps://www.payperbyte.io/.well-known/agent.json

first seen 2 mo ago · fetched 8 d agoopen ↗

Field history (9 recent events)

8 d ago · declared · summary → "USDC data feeds + oracles for AI agents — pay-per-call via x402, settled in USDC on Base. Data responses carry an EIP-7
8 d ago · declared · description → "USDC data feeds + oracles for AI agents — pay-per-call via x402, settled in USDC on Base. Data responses carry an EIP-7
2 mo ago · declared · publisherName → "PayPerByte"
2 mo ago · declared · publisherUrl → "https://www.payperbyte.io"
2 mo ago · declared · summary → "Per-byte USDC data feeds + oracles for AI agents — pay-per-call via x402, settled in USDC on Base. Data responses carry
2 mo ago · declared · version → "0.3.0"
2 mo ago · declared · protocols → ["a2a"]
2 mo ago · declared · homepageUrl → "https://www.payperbyte.io/docs/quickstart"
2 mo ago · declared · description → "Per-byte USDC data feeds + oracles for AI agents — pay-per-call via x402, settled in USDC on Base. Data responses carry

when	check	result	http	latency	detail
17 min ago	a2a card	ok	200	182 ms	card: PayPerByte · 12 skills
7 h ago	a2a card	ok	200	149 ms	card: PayPerByte · 12 skills
14 h ago	a2a card	ok	200	165 ms	card: PayPerByte · 12 skills
21 h ago	a2a card	ok	200	158 ms	card: PayPerByte · 12 skills
28 h ago	a2a card	ok	200	179 ms	card: PayPerByte · 12 skills
35 h ago	a2a card	ok	200	151 ms	card: PayPerByte · 12 skills
2 d ago	a2a card	ok	200	164 ms	card: PayPerByte · 12 skills
2 d ago	a2a card	ok	200	204 ms	card: PayPerByte · 12 skills
2 d ago	a2a card	ok	200	167 ms	card: PayPerByte · 12 skills
3 d ago	a2a card	ok	200	173 ms	card: PayPerByte · 12 skills

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