MARKET MONITOR / CATALOGUE Services 158,286 MCP listed 48,838 x402 109,574 Rails Base / Solana / Polygon / Arbitrum Imported 2026-11-15 · 3 sources
Provider

agents.writerslogic.com

agents.writerslogic.com · 251 listed services · provider site

Constraint carryover x402 REST

Takes the constraints an agent was given (budget caps, deadlines, identifiers, prohibitions) and a later artifact (plan, summary, handoff, tool arguments) and reports for each constraint whether its concrete atoms still...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Config migration x402 REST

Applies a declared mapping (from pointer, to pointer, optional transform such as string-to-number or a value map) to a v1 JSON config, carries over unmapped keys the v2 schema declares, fills schema defaults, validates t...

agents.writerslogic.com Geo & Maps checked 2026-11-09
0.005 USDC per call per call

Citation span x402 REST

Finds each quote an agent attributes to a source text and returns where it sits: exact offsets in UTF-16, code points, UTF-8 bytes and graphemes, so the span slices back to the matched text. Tries an exact match, then a...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Join cardinality x402 REST

Takes the join keys of two tables (every row's key, or distinct keys with row counts) and computes the exact output row count of an inner, left, right or full equi-join with SQL NULL semantics, the observed cardinality (...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Metric comparability x402 REST

Compares two structured metric definitions field by field (numerator, denominator, aggregation, weighting, population, filters, exclusions, period grain and calendar, timezone, currency, FX and tax basis, unit) and retur...

agents.writerslogic.com Data & Finance checked 2026-11-09
0.005 USDC per call per call

Sentinel values x402 REST

Scans columns of values for sentinels. Values you declare in a dictionary (for example -1 means unknown in column age) are reported as asserted hits with their row paths. Other values that look like missing-data markers...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Schema compat x402 REST

Compares an old and a new JSON Schema 2020-12 (or two OpenAPI 3.0/3.1 documents) and lists each change with its path, keyword, old and new value, whether it narrows or widens what is accepted, and whether it breaks clien...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Enum canonicalize x402 REST

Maps each input string onto one member of a closed caller-supplied set using, in order: exact match, caller aliases, a deterministic normal form (Unicode NFKC, case and accent folding, punctuation and underscore collapse...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Openapi slice x402 REST

Extracts one operation (path plus HTTP method, matching templated paths like /pets/{id}) from an OpenAPI 3.0.x or 3.1.x document, given as JSON, YAML or a parsed object, and returns a smaller valid OpenAPI document holdi...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Csv dialect x402 REST

Detects the delimiter (comma, semicolon, tab, pipe), quote character, line terminator, BOM, header row offset (preamble lines above the header) and whether a header exists in CSV text, parsed per RFC 4180 so quoted delim...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Token vault ladder x402 REST

One decision on holding a Base token and a vault position: token-trap-detector (live bytecode, proxy slots, honeypot simulation) and vault-exit-lawyer (redeem limits, queue, admin powers, eth_call simulation) run in para...

agents.writerslogic.com Security checked 2026-11-09
1.2 USDC per call per call

Csv roundtrip x402 REST

Parses CSV text (RFC 4180, caller dialect) against a column type map and reports, per cell with row, column, physical line and byte offset, everything that would change on a parse-serialize-parse round trip or when opene...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Citation audit x402 REST

Bibliography in, evidence audit out: reference-verifier checks every reference (fabricated, mis-cited, retracted, corrected); the top DOI-bearing references (corrections first, then the most cited in the manuscript) get...

agents.writerslogic.com Security checked 2026-11-09
3.2 USDC per call per call

Schema witness x402 REST

Walks a caller-supplied JSON Schema 2020-12 and, for every constraint keyword (type, enum, const, minimum, maximum, exclusiveMinimum, exclusiveMaximum, multipleOf, minLength, maxLength, pattern, format, minItems, maxItem...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Cra readiness x402 REST

Repository or manifests in, EU Cyber Resilience Act Art. 14 position out: dependency-advisor resolves every declared package to its locked version (deterministic, no model), those versions go to cra-exploit-clock as pack...

agents.writerslogic.com Security checked 2026-11-09
2.4 USDC per call per call

Schema repair x402 REST

Validates a JSON value against a caller-supplied JSON Schema 2020-12 and applies only the coercions you list (for example string-to-integer for "42", trim-strings, enum-case, apply-defaults, drop-additional) when each on...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Micro batch x402 REST

Bundles up to 20 calls to any pure micro check (catalog entries that are neither stateful nor network-reading, e.g. checksum, patch-anchor, allocate, business-deadline) into one x402 settlement, so each check costs $0.00...

agents.writerslogic.com Crypto & Payments checked 2026-11-09
0.02 USDC per call per call

Json patch conflict x402 REST

Takes one base document and 2 to 4 JSON Patch (RFC 6902) operation lists written against it and reports, per pair, whether they commute: same-path writes, ancestor/descendant overlaps, array-index shifts (an insert or re...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Fleet memory x402 REST

Lets every agent in your fleet record what it observed and read what the others saw, with freshness: endpoint brownouts and latency, rate-limit behaviour, IVR menu paths that worked, whether an ambiguous submission was l...

agents.writerslogic.com Crypto & Payments checked 2026-11-09
0.005 USDC per call per call

Cross field rules x402 REST

Evaluates up to 100 rules you declare over one JSON document and reports, per rule, pass, fail or unknown with the JSON pointer of every violating field and the actual value class (absent, null, empty string, value). Rul...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Acceptance receipt x402 REST

Runs your deterministic acceptance tests (equals, exists, absent, type, contains, length and number ranges, one-of, sha256, a JSON Schema subset) against a sub-agent's or vendor's JSON output at JSON Pointer paths, and r...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Lossy conversion x402 REST

Takes raw JSON literals (as written, so 9007199254740993, 1e400, -0, "007" and 0.10 are judged on their digits, not on a parsed double) and target types (binary64, binary32, int8..int64, uint8..uint64, PostgreSQL numeric...

agents.writerslogic.com Databases & Storage checked 2026-11-09
0.005 USDC per call per call

Policy gate x402 REST

Evaluates your own policy (JsonLogic rules, each allow or deny, deny-overrides or first-match, default deny) against a proposed tool call, payment or action, and returns allow or deny, the rule id that decided, and a rec...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

Union branch x402 REST

Evaluates a JSON value against every branch of a oneOf or anyOf in a caller-supplied JSON Schema 2020-12 (or OpenAPI schema converted to it) and reports which branches match, the exact errors of each branch that fails wi...

agents.writerslogic.com Search & Research checked 2026-11-09
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 2026-11-09
0.005 USDC per call per call

Duplicate key audit x402 REST

Scans raw JSON text (RFC 8259) for repeated object member names at any depth, including inside arrays and keys spelled differently but equal after unescaping ("a" vs "\u0061"), and reports each with its JSON pointer, UTF...

agents.writerslogic.com Search & Research checked 2026-11-09
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 2026-11-09
0.005 USDC per call per call

Test exit interpret x402 REST

Reads a finished test run (runner, exit code, optional version, flags, caller-parsed counts, optional go test output, optional per-attempt exit codes) and says whether tests actually passed, ran nothing, were all skipped...

agents.writerslogic.com Productivity & Docs checked 2026-11-09
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 2026-11-09
0.005 USDC per call per call

Assumption conflict x402 REST

Takes assumptions that several agents or steps hold about the same fact (key, value, who) and reports every key where the values differ, naming the conflicting pairs and whether they differ only by case or whitespace (a...

agents.writerslogic.com Search & Research checked 2026-11-09
0.005 USDC per call per call

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