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Detect RFC1918 private IPv4 addresses. Call when agents classifying IPs before whois/network calls. Returns is_private 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.

Classify an IP as private/loopback/global (no geolocation) 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.

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.

Check whether a string is a float. Call when you validate decimal form fields before parse. Returns valid boolean 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.

Check empty object from value. Call when you detect empty JSON bodies in agent pipelines. Returns empty boolean 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.

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;

Check whether value is a JSON array. Call when you validate agent payloads before list ops. Returns boolean 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.

Check whether a string is a signed integer. Call when you validate numeric form fields before parse. Returns valid boolean 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.

Check whether value is a JSON object. Call when you validate agent payloads before object ops. Returns boolean 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.

Validate even-length hex (optional 0x). Call when you preflight calldata/hash hex before chain tools. Returns valid boolean 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.

Check whether list a is subset of list b. Call when you verify required tags are present in agent sets. Returns subset boolean 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 http(s) URL shape. Call when you preflight agent-held URLs before fetch/extract. Returns valid boolean 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.

Primality check. Call for teaching demos, ID heuristics, or lightweight number filters (bounded integers). Returns whether n is prime with a clear boolean field. $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.

Leap year check. Use for date validation and calendar math without external data. Returns a boolean leap-year result for a Gregorian year. $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.

ISBN-10/ISBN-13 checksum validation 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.

Lookup country name from a static ISO3166-1 alpha-2 table subset. Call when labeling country codes offline. Returns name and code 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.

Weekend check for a date. Call when routing work, quiet hours, or business-day logic in agents. Returns whether the date falls on Saturday or Sunday. $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.

Validate UUID string shape. Call when you check correlation IDs before storage keys. Returns valid boolean 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.

Parse ISO-8601 duration subset PnDTnHnMnS into total seconds — 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

Convert ISO-8601 to unix seconds. Call when you feed agent schedules into epoch math. Returns unix, iso, 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.

ISO week number. Call for weekly reporting buckets and standup cadence keys. Returns ISO week number (and year context) for a date. $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.

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.

JSON Array Chunk: JSON Array Chunk chunks a JSON array into bounded ordered groups from bounded caller-supplied values without an external provider. Call JSON Array Chunk 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 JSO

Join an array of lines with a separator. Call when you reassemble agent-held line lists for prompts or files. Returns joined text and line 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 Dedupe: JSON Array Dedupe removes duplicate JSON array values while preserving first occurrence from bounded caller-supplied values without an external provider. Call JSON Array Dedupe 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 versione

JSON Array Difference: JSON Array Difference returns left-side values absent from the right JSON array from bounded caller-supplied values without an external provider. Call JSON Array Difference 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 versione

JSON Array Flatten One: JSON Array Flatten One flattens exactly one nesting level from a JSON array from bounded caller-supplied values without an external provider. Call JSON Array Flatten One 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

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 vers

JSON Array Index By Key: JSON Array Index By Key indexes object rows by a unique top-level key and reports duplicates from bounded caller-supplied values without an external provider. Call JSON Array Index 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 value

JSON Array Group By Key: JSON Array Group By Key groups object rows by a selected top-level key from bounded caller-supplied values without an external provider. Call JSON Array Group 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 res

JSON Array Intersection: JSON Array Intersection returns values shared by two JSON arrays in left-side order from bounded caller-supplied values without an external provider. Call JSON Array Intersection 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

JSON Array Project Keys: JSON Array Project Keys projects selected keys from every object row from bounded caller-supplied values without an external provider. Call JSON Array Project 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 resul

JSON Array Length Check: JSON Array Length Check checks selected array fields against caller item-count bounds from bounded caller-supplied values without an external provider. Call JSON Array Length Check 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

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

Check a JSON payload against a bounded structural contract and return path-level errors. Use it before an autonomous workflow acts on untrusted input, changes an API, retries a request, or evaluates production reliability. Returns bounded machine-readable JSON for $0.002 USDC via x402 on Base or Solana. Execution is deterministic, first-party, local-only, stateless, and does not call an upstream p

JSON Cross Field Order: JSON Cross Field Order checks two numeric fields for a caller-selected ordering relation from bounded caller-supplied values without an external provider. Call JSON Cross Field Order 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

JSON Cross Field Equal: JSON Cross Field Equal checks two top-level fields for exact JSON equality from bounded caller-supplied values without an external provider. Call JSON Cross Field Equal 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 r

JSON Boolean Coerce: JSON Boolean Coerce coerces explicit boolean tokens while reporting rejected values from bounded caller-supplied values without an external provider. Call JSON Boolean Coerce 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 versione

JSON Depth Check: JSON Depth Check measures JSON nesting depth against a caller budget from bounded caller-supplied values without an external provider. Call JSON Depth Check 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 Email Fields Check: JSON Email Fields Check checks selected fields for bounded email address shape from bounded caller-supplied values without an external provider. Call JSON Email Fields Check 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 versi

JSON Empty Prune: JSON Empty Prune removes selected empty string, array, and object top-level values from bounded caller-supplied values without an external provider. Call JSON Empty Prune 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 resul

JSON Enum Fields Check: JSON Enum Fields Check checks selected fields against caller-provided enum values from bounded caller-supplied values without an external provider. Call JSON Enum Fields Check 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 vers

JSON Key Denylist: JSON Key Denylist finds top-level object keys present in an explicit denylist from bounded caller-supplied values without an external provider. Call JSON Key Denylist 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 c

JSON-escape a string (without surrounding quotes). Call when you embed text into a larger JSON template safely. Returns escaped string body 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 Hash Fields Check: JSON Hash Fields Check checks selected fields for caller-specified hexadecimal digest length from bounded caller-supplied values without an external provider. Call JSON Hash Fields Check 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,

JSON Key Allowlist: JSON Key Allowlist finds top-level object keys outside an explicit allowlist from bounded caller-supplied values without an external provider. Call JSON Key Allowlist 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

JSON Lines Parse: JSON Lines Parse parses bounded newline-delimited JSON into ordered values from bounded caller-supplied values without an external provider. Call JSON Lines Parse 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 contra

JSON Lines Stringify: JSON Lines Stringify serializes bounded JSON values as compact newline-delimited JSON from bounded caller-supplied values without an external provider. Call JSON Lines Stringify 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 vers

List top-level JSON keys. Call when agents must discover object shape without full schema inference. Returns top-level keys of a JSON object. $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.

Apply bounded top-level JSON Merge Patch semantics for integration planning. Use it as a bounded preflight or analysis step inside an enterprise agent workflow before data, policy, integration, security, or commercial decisions reach production. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base or Solana. Execution is first-party, local-only, stateless, memory-only, and