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Simple average of price samples for a light TWAP mark. Call when benchmarking fills against an equal-weight path you already hold. Returns twap and sample count 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.

JSON Size Budget: JSON Size Budget measures compact UTF-8 JSON size against a byte budget from bounded caller-supplied values without an external provider. Call JSON Size Budget 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 Size Budget as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana…

EVM Deadline Check: EVM Deadline Check checks a transaction deadline against current time and minimum lead time from bounded caller-supplied values without an external provider. Call EVM Deadline Check 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 EVM Deadline Check as versioned deterministic JSON. Price: $0.001 USDC…

Return the first list element. Call when you need head 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.

Seeded Winners Without Replacement: Seeded Winners Without Replacement draws an ordered reproducible winner list without replacement from bounded caller-supplied values without an external provider. Call Seeded Winners Without Replacement 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 Winners Without Replacement as versioned determini…

JSON Array Sort By Key: JSON Array Sort By Key sorts object rows by a selected top-level key from bounded caller-supplied values without an external provider. Call JSON Array Sort By Key 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 Sort By Key as versioned deterministic JSON. Price: $0.001 USDC via x402 on…

Check whether a published USDC price stays under a buyer ceiling — 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.

Return the element at index. Call when you pick a specific agent-held array slot with bounds check. Returns value, index, ok 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.

Accept Language Rank: Accept Language Rank ranks offered languages against weighted Accept-Language ranges from bounded caller-supplied values without an external provider. Call Accept Language Rank 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 Accept Language Rank as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, sta…

Omit keys from an object. Call when you strip secrets before agent logging. Returns filtered object and size 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.

Convert a probability into American odds. Call when exporting model probs into American odds for display. Returns American odds from probability 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.

Detect blank or whitespace-only strings before paying downstream — 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.

Compute mid price from bid/ask top-of-book levels. Call when you have L1 bid and ask and need a mid for marks. Returns mid, spread_abs, and spread_bps 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.

Kelly fraction from win probability and net payoff odds b. Call when bankroll sizing for repeated bets with known edge (advisory). Returns full Kelly fraction clamped to [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.

Generate Crockford Base32 ULIDs for $0.001 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

Apply reversible ROT13 to Latin letters while preserving numbers, punctuation, spacing, and letter case for $0.001 USDC. Use it for deterministic fixture decoding, obfuscation compatibility, or legacy text workflows up to 100,000 characters. The first-party transform runs locally with no network call, storage, key, or retention.

Maximum of a numeric list. Call when you find ceilings across agent-held samples. Returns max value 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.

Boolean OR of two coerced values. Call when you combine optional agent success signals. Returns OR result 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.

Scale ether amounts into wei integer strings for transfers and tx value. Call when preparing value fields, allowances, or transfers denominated in ETH. Returns wei integer string and eth input 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.

Seeded Grid Point: Seeded Grid Point selects a reproducible integer coordinate inside rectangular bounds from bounded caller-supplied values without an external provider. Call Seeded Grid Point 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 Grid Point as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. Firs…

X402 Pay To Match: X402 Pay To Match compares challenge pay-to address with an expected merchant address from bounded caller-supplied values without an external provider. Call X402 Pay To Match 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 Pay To Match as versioned deterministic JSON. Price: $0.0…

Remove common leading whitespace from lines. Call when you normalize agent-held code fences or YAML blocks. Returns dedented text and stripped space 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.

Validate BIC/SWIFT format shape (8 or 11 alnum). Call when preflight for bank routing fields. 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.

Nth Fibonacci (n≤78). Use for sequences, demos, or test fixtures without shipping a math package. Returns F(n) for n up to 78 with a structured receipt. $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.