All services

Average of a numeric list. Call when you need a mean for agent metrics samples. Returns average and 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.

UUID generator API for agents: generate one to ten UUIDv4 identifiers for $0.001 USDC. Call when you need correlation ids, idempotency keys, or object slugs without an ID service. Local first-party CSPRNG only—not a sorted ULID clock and not a reserved namespace. No API key, no subscription.

Integer → Roman numerals. Use for outlines, chapter labels, or display formatting in agent UIs. Returns a Roman numeral for a positive integer. $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.

Seeded Balanced Groups: Seeded Balanced Groups distributes items reproducibly across near-equal groups from bounded caller-supplied values without an external provider. Call Seeded Balanced Groups when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Balanced Groups as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Sola…

Measure payload byte size against soft and hard ceilings before paying — 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.

Sort a list numerically. Call when you order agent-held scores or prices. Returns sorted numbers and 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.

JSON Array Filter Keys: JSON Array Filter Keys keeps object rows whose selected key matches caller values from bounded caller-supplied values without an external provider. Call JSON Array Filter Keys before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for JSON Array Filter Keys as versioned deterministic JSON. Price: $0.001 USD…

Classify an HTTP status code into family with retry hint — 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.

DNS Txt Chunk Join: DNS Txt Chunk Join joins quoted DNS TXT chunks into the logical record value from bounded caller-supplied values without an external provider. Call DNS Txt Chunk Join before treating quoted DNS TXT chunks as one logical record. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for DNS Txt Chunk Join as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, stateless, memory-only execution with no…

X402 Refund Eligibility Check: X402 Refund Eligibility Check evaluates caller-supplied delivery outcome against explicit refund reasons from bounded caller-supplied values without an external provider. Call X402 Refund Eligibility 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 Refund Eligibi…

Constant-product AMM output amount for a given input size. Call when simulating x*y=k swaps offline from reserves you already know. Returns amount out and new reserves 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.

Call/put delta from BS closed form. Call when delta-hedging or option inventory needs BS delta. Returns delta for call and put 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.

Base USDC Decimal Rounding: Base USDC Decimal Rounding checks whether a decimal USDC amount fits six fractional digits exactly from bounded caller-supplied values without an external provider. Call Base USDC Decimal Rounding before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for Base USDC Decimal Rounding as versioned determi…

Validate email shape (not mailbox existence). Call when you cheaply reject obvious non-emails before enrichment. Returns valid boolean for $0.001 USDC via x402 on Base. Shape only—not MX, SMTP, or ownership proof. No network, no keys, no retention. Results are advisory; the caller owns budgets, auth, and production controls.

Map a true probability into a binary contract fair price in [0,1]. Call when pricing yes/no markets from your probability model. Returns fair price in [0,1] 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.

Vary Header Normalize: normalizes and deduplicates Vary header field names using only bounded caller-supplied values. Call when you need a bounded vary header normalize result before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Vary Header Normalize as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, stateless, memory-only ex…

Encode non-negative integers into 0x-hex strings. Call when building simple hex fields or debug payloads from decimal values. Returns 0x-prefixed hex 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.

Compare two bounded caller-supplied DNS record snapshots and return canonical added, removed, and unchanged records. Use after repeated DNS or MX inspections to detect an infrastructure change without another parser. Returns deterministic JSON for 0.001 USDC via x402 on Base or Solana; local-only, memory-only, and no DNS request is made.

Seeded Priority Order: Seeded Priority Order orders equal-priority tasks reproducibly from bounded caller-supplied values without an external provider. Call Seeded Priority Order when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Priority Order as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, st…

Check whether text starts with a prefix. Call when you gate URL/scheme or header prefix checks before egress. Returns boolean result and prefix 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.

Server Timing Parse: Server Timing Parse parses bounded Server-Timing metrics and durations from bounded caller-supplied values without an external provider. Call Server Timing Parse before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Server Timing Parse as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, stateless, memory-on…

Annualize a period funding rate (e.g. 8h → APR). Call when comparing funding across venues with different periods. Returns apr and periods_per_year 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.

Overround/vig from a set of mutually exclusive implied probs. Call when measuring book margin before de-vigging. Returns overround and sum of probs 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.

DNS DKIM Selector Check: DNS DKIM Selector Check checks selector and signing-domain label shapes for a DKIM lookup from bounded caller-supplied values without an external provider. Call DNS DKIM Selector Check before looking up a DKIM selector and signing-domain label shape. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for DNS DKIM Selector Check as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, statele…