Agent & Infrastructure

Echo text with length (probe channel 1). Call when you verify x402 pay→deliver wiring with a trivial payload. Returns echo text, length, echo=1 for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

X402 Discovery Parity Check: X402 Discovery Parity Check compares tool-name sets from catalog, OpenAPI, portfolio, and runtime from bounded caller-supplied values without an external provider. Call X402 Discovery Parity Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Discovery Parity Check as…

OLS hedge ratio beta of y on x (no intercept). Call when sizing the short leg in a pairs trade offline. Returns beta and n as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Host from a URL. Use to extract the host for allowlists, branding, or outbound policy checks. Returns the host/domain component; the URL is never fetched. $0.001 USDC per successful call via x402 on Base or Solana—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Agent Result Provenance Check: Agent Result Provenance Check checks result provenance for source, observed time, and method from bounded caller-supplied values without an external provider. Call Agent Result Provenance Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Provenance Check a…

Map object keys to JSON type names. Call when you audit agent payload shapes before schema checks. Returns types map for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

Return the last list element. Call when you need tail of an agent-held array safely. Returns value and empty flag for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

X402 Price Drift Check: X402 Price Drift Check compares advertised and challenged raw prices against a tolerance from bounded caller-supplied values without an external provider. Call X402 Price Drift Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Price Drift Check as versioned deterministic…

X402 Delivery Status Check: X402 Delivery Status Check classifies delivery HTTP status against accepted success codes from bounded caller-supplied values without an external provider. Call X402 Delivery Status Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Delivery Status Check as versioned…

Parse major.minor.patch from a semver string. Call when you compare agent dependency versions without a full parser. Returns valid, major, minor, patch for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

X402 Portfolio Route Check: X402 Portfolio Route Check checks one portfolio entry for ownership, economics, resource, and discoverability from bounded caller-supplied values without an external provider. Call X402 Portfolio Route Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Portfolio Route…

Validate 0x + 64 hex transaction hash shape. Call when preflight before receipt lookup. Returns valid boolean as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Compute confirmations remaining from head and inclusion block. Call when progress bars and readiness gates for deposit/finality logic. Returns confirmations observed vs needed as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Compare ETag validators including weak tags and If-None-Match lists — first-party local utility for agent preflight and proven micro-utils expansion. Returns deterministic machine-readable JSON for $0.001 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, no web search, no live RPC, and no mediagen. Results are advisory; the caller owns authorization, budgets, and production controls.

X402 Delivery Hash Check: X402 Delivery Hash Check verifies delivered text against a caller-supplied sha-256 digest from bounded caller-supplied values without an external provider. Call X402 Delivery Hash Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Delivery Hash Check as versioned determ…

Parse DMARC p= and rua= fields from a TXT record. Call when extracting DMARC policy from a caller-supplied record. Returns policy and rua as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

X402 Delivery Receipt Check: X402 Delivery Receipt Check checks receipt fields for payment id, resource, amount, and delivery status from bounded caller-supplied values without an external provider. Call X402 Delivery Receipt Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Delivery Receipt Ch…

X402 Payment Deadline Check: X402 Payment Deadline Check checks payment authorization deadline against caller time budgets from bounded caller-supplied values without an external provider. Call X402 Payment Deadline Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Payment Deadline Check as ver…

Build CAIP-2 chain identifiers from namespace and reference. Call when emitting standard chain IDs for multi-chain agent tooling. Returns caip2 string as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Historical CVaR/ES at alpha from return samples. Call when tail risk budgeting without a full risk engine. Returns var and cvar as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Agent Result Freshness Check: Agent Result Freshness Check checks result observation age against a caller freshness budget from bounded caller-supplied values without an external provider. Call Agent Result Freshness Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Freshness Check as v…

Join fields into a CSV row with proper quoting. Call when you emit CSV without a spreadsheet library. Returns CSV row string and field count for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

Select a reproducible sample without replacement from a bounded caller-supplied list. Use when multiple agents or retries must reach the same selection from the same seed. Returns sampled values, original indices, and a seed hash for 0.001 USDC via x402 on Base or Solana; local-only, stateless, and no input retention.

Detect common SPF mechanisms present in a TXT record. Call when quick SPF mechanism inventory without DNS lookup. Returns flags for include/a/mx/all as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.