MARKET MONITOR / CATALOGUE Services 145,824 MCP listed 42,429 x402 103,511 Rails Base / Solana / Polygon / Arbitrum Imported 2026-11-06 · 3 sources
Task

Research

549 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Print estimate x402 REST

Given an image's pixel size and a print size (inches, millimetres or centimetres) plus optional bleed, margin and target ppi, returns the effective ppi over trim plus bleed, whether it meets the target, the pixel count a...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Metar parse x402 REST

Decodes up to 20 METAR or SPECI aviation weather reports (US and ICAO forms: wind with gusts and variable direction, visibility in statute miles or metres, CAVOK, RVR, present weather, cloud layers, temperature/dew point...

agents.writerslogic.com Geo & Maps checked 2026-11-06
0.005 USDC per call per call

Chess move x402 REST

Checks whether a move (or a sequence of moves) is legal from a FEN position under the FIDE Laws of Chess, for agents that play, annotate or verify chess games. Accepts UCI or SAN, returns the normalized move, the new FEN...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Dice roll x402 REST

Rolls dice notation (for example 4d6kh3+2) from a caller seed with a documented SHA-256 counter-mode stream and returns every die, the kept/dropped marks and a full draw transcript, for agents and referees that need a ro...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Geo distance x402 REST

Computes the haversine (IUGG mean-radius sphere) and Vincenty inverse (WGS-84 ellipsoid) distance in metres plus initial and final bearings for up to 100 coordinate pairs, and optionally checks a claimed distance within...

agents.writerslogic.com Geo & Maps checked 2026-11-06
0.005 USDC per call per call

Score state x402 REST

Replays a tennis point sequence (ITF Rules of Tennis: games, deuce, tie-breaks, match tie-break, who serves), computes a golf Score Differential and Handicap Index (World Handicap System), or tallies a cricket innings ba...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Chord check x402 REST

Names a chord from its notes, spells a chord symbol into notes, tests whether a chord is diatonic to a key, or transposes a chord symbol, using pitch-class arithmetic over a fixed table of 21 chord qualities, for agents...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Electrical calc x402 REST

Computes Ohm's law and power from any two of V, I, R, P; series and parallel resistance with optional tolerance bounds; a voltage divider (with optional load); an LED series resistor rounded up to a preferred E-series va...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Tolerance stack x402 REST

Computes the minimum and maximum of a linear dimensional stack (the gap) from signed contributions with symmetric, unequal-bilateral, unilateral or min/max limits, both by exact worst-case arithmetic and by root-sum-squa...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Carton fit x402 REST

Checks whether up to 50 box-shaped items (axis-aligned, 90-degree rotations, optional this-side-up lock, optional weights) fit into any of up to 20 candidate cartons, and recommends the smallest-volume carton for which a...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Clause tag x402 REST

Tags each contract-style clause you supply with the modal force it expresses (obligation, prohibition, permission, recommendation) and topic cues (definition, condition, termination, payment, confidentiality, liability,...

agents.writerslogic.com Crypto & Payments checked 2026-11-06
0.005 USDC per call per call

Lot pick x402 REST

Allocates a demand quantity across up to 200 inventory lots under a stated policy (FIFO by received date, FEFO by expiry, LIFO, or fewest lots), excluding held, expired, short-shelf-life and wrong-location lots, in whole...

agents.writerslogic.com Data & Finance checked 2026-11-06
0.005 USDC per call per call

Syllable count x402 REST

Counts syllables per word and per line for English text, using your dictionary entries first and otherwise a rule-based estimator (vowel groups, silent e, -ed/-es, consonant+le). Optionally checks each line against a tar...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Requirement coverage x402 REST

Evaluates a checklist of requirements the caller defines (each made of needs on evidence keys: present, equals, one of, min/max, maximum age) against evidence the caller supplies, and returns met / unmet / unknown per re...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Pod sufficiency x402 REST

Checks whether the proof-of-delivery evidence supplied (signature, photo, timestamp, GPS fix, recipient name, scan ...) satisfies the carrier or contract requirement list the caller gives: every required item, plus optio...

agents.writerslogic.com Crypto & Payments checked 2026-11-06
0.005 USDC per call per call

Site access check x402 REST

Checks whether an intended action on a website (read, crawl, submit, log in, ...) satisfies the access rules the caller supplies (robots rule read, terms clause, login present, rate-limit budget, captcha seen) against fa...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Manual applicability x402 REST

Checks whether a manual, service bulletin or procedure applies to a specific unit by comparing the scope the document declares (models, firmware or revision range, serial range, exclusions) with the unit's facts the call...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Lease x402 REST

Lets many agents agree which one works on a task: acquire a named resource for 1-3600 s, renew it while working, release it when done. Every new acquisition returns a strictly larger fencing token; pass it to the downstr...

agents.writerslogic.com Crypto & Payments checked 2026-11-06
0.005 USDC per call per call

Idempotency registry x402 REST

Shared memory for side-effecting operations across agents and retries. begin(key) answers proceed (you hold a short claim), wait (another owner is mid-flight), already_completed (returns the stored result pointer), or fi...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Token bucket x402 REST

One rate limiter shared by every agent in your fleet. take(cost) atomically spends tokens if available and returns allowed plus remaining, or refuses with retryAfterMs until enough tokens refill. capacity and refillPerSe...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Document supersession x402 REST

Given the target document id, the supplied set of documents (id, effective date, which ids each one supersedes, withdrawn flag) and a reference date, reports whether the target is superseded or withdrawn as of that date,...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Id block x402 REST

Hands out strictly increasing integer blocks from a named sequence (1-1000 ids per call) so parallel agents never issue the same invoice, ticket or order number. Numbers are never reused. Not gapless: a block an agent re...

agents.writerslogic.com Crypto & Payments checked 2026-11-06
0.005 USDC per call per call

Spend ledger x402 REST

A budget shared by a task tree, in integer minor units. reserve() atomically holds an amount if the remaining budget covers it (expired holds are freed automatically); commit() records what was actually spent, up to the...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

Result cache x402 REST

Caches a result under the SHA-256 of the canonical (JCS) request, so every agent in your fleet that makes the same request reuses one answer for up to an hour. get returns hit with the value and age, or a miss (status un...

agents.writerslogic.com Search & Research checked 2026-11-06
0.005 USDC per call per call

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