Japan Public Ledgers MCP

Query agent actions with filters

Record an agent action for audit and compliance

Generate audit report (json/markdown/soc2 format)

Solve a CAPTCHA for a domain you own or have explicit permission to access

Verify ownership of a domain before using CAPTCHA solving

List activity records for an identity, newest first (owner only)

Get the issuer-signed badge and signed fields for an identity

Look up an identity. Returns signatureValid (issuer+integrity only, NOT an authenticity/safety signal) and a disclaimer.

Append a hash-chained activity record (owner only). Optional provenance (repo/version/config) is self-reported.

Register an agent and get a unique identity ID + issuer-signed badge. agent_name/metadata are self-reported and unverified.

Delete a memory or all memories in a namespace

Retrieve a stored memory by key

Search memories by prefix, tags, or type

Store a memory for an AI agent (key-value, with TTL and metadata)

Fetch a URL via a rotating proxy (region/type selectable). robots.txt enforced.

Create a sticky proxy session (same IP for multiple requests)

Create a temporary email address (auto-expires)

Get full message content with extracted verification links/codes

List received messages in a mailbox

Wait for an incoming message (long polling, max 60s)

Get trust scores for multiple subjects in one call (max 100)

Submit feedback about an agent/wallet (positive or negative)

Get trust score for a wallet, agent card URL, or domain

Create a webhook endpoint that relays requests to your agent

List requests received by a webhook endpoint

Poll for new webhook requests (long polling, max 60s)

Replay a stored webhook request

Create a saved watch: when a NEW matching event appears in a ledger, a notification is pushed to your destination. Filters: ledger (optional), keyword and/or entity (case-insensitive title substring). At least one filter is required. Backfill never fires.

Deactivate a saved watch by id (soft delete; stops future notifications).

List the calling user's saved watches.

Get a bid notice detail plus full event timeline. Returns firstSeenAt and ledgerVerified.

Recent appearance / deadline-move / close / cancel / award events across all bid notices since the given ISO8601 timestamp. Each item includes firstSeenAt and ledgerVerified.

Search Japanese public-procurement bid notices (kkj.go.jp). Each hit includes firstSeenAt and ledgerVerified.

Time-ordered events only for a bid notice (the differentiator: when it appeared, deadline moved, closed, was cancelled or awarded). Includes firstSeenAt and ledgerVerified.

Verify the hash-chain integrity of a bid notice (tamper detection). Returns chainValid, brokenAt (if any), checked event count, firstSeenAt and ledgerVerified.

Estimate electricity CO2e (kg) from energy use (kWh) and a regional grid-intensity factor (defaults to the IEA world average). Pure compute; price 0.0 (free).

Look up the published emission factor (value, unit, category) for a named activity key (e.g. shipping_air, electricity_global, travel_car, gasoline, beef). Pure compute; price 0.0 (free).

Estimate voluntary-market offset cost (USD) and tree- / forest-year equivalents for a given kg CO2e, using published constants. Pure compute; price 0.0 (free).

Estimate freight CO2e (kg) from weight, distance and transport mode using embedded GLEC/DEFRA-order emission factors. Pure compute; price 0.0 (free).

Estimate passenger-travel CO2e (kg) from distance and travel mode using embedded per-passenger-km factors. Pure compute; price 0.0 (free).

Agentic-commerce readiness score (0-100) for how well a product is structured for autonomous agents, with a transparent rationale, from a url, raw html, or inline product. Read-only; price 0.0 (free).

Resolve product stock availability to a coarse signal (in_stock / out_of_stock / limited / preorder / unknown), from a url, raw html, or inline product. Read-only; price 0.0 (free).

Validate product-feed completeness: which required fields are present or missing and a completeness score, from a url, raw html, or an inline product object. Read-only; price 0.0 (free).

Compare a set of offers and return the cheapest, most expensive, spread and per-offer ranking. Requires a non-empty offers array. Pure; price 0.0 (free).

Extract a normalized product (name, price, currency, availability, brand, GTIN, ...) from Schema.org / JSON-LD markup. Provide a url to fetch or raw html. Read-only; price 0.0 (free).

Fetch a company profile (name, status, incorporation / dissolution dates, type, address) by jurisdiction + company number via OpenCorporates. Read-only; price 0.0 (free).

Look up metadata for a jurisdiction code (name, registry details). Pure compute; price 0.0 (free).

List a company officers (name, position, start / end dates, current flag) by jurisdiction + company number via OpenCorporates. Read-only; price 0.0 (free).

Search for companies by name (optionally scoped to a jurisdiction) via the OpenCorporates open API. Returns candidate companies for disambiguation. Read-only; price 0.0 (free).

Validate a company-registration number against the expected format for its jurisdiction. Pure compute; returns valid flag, normalized value and reason. Price 0.0 (free).

Heuristic likelihood (0-100) that a passage of text is AI-generated, from lexical-diversity and burstiness signals with a transparent rationale. Pure, no network; price 0.0 (free).

Detect a C2PA / Content Credentials manifest by scanning the raw image bytes for JUMBF / C2PA markers and lifting any human-readable claim generator. Provide an image url. Read-only; one HTTPS GET; price 0.0 (free).

Transparent heuristic reputation score (0-100) for a domain combining age, TLS validity, DNS / MX and SPF / DMARC signals via free HTTPS (DoH / RDAP / CT). Read-only; price 0.0 (free).

Combined media-provenance verdict for an image url: C2PA presence plus the hosting domain reputation, with rationale. Read-only; price 0.0 (free).

Best-effort watermark and provenance-marker detection from the raw image bytes (e.g. C2PA / IPTC / XMP markers). Provide an image url. Read-only; price 0.0 (free).

Parse a CVSS v3.0/3.1 vector string into base score, severity and per-metric labels. Fully deterministic; no network I/O; price 0.0 (free).

Fetch a single CVE record by id from the free NVD CVE API 2.0: description, CVSS, published/modified dates and references. Read-only; price 0.0 (free).

Look up known vulnerabilities for a package via the free OSV.dev API, optionally filtered to a specific version. Read-only; price 0.0 (free).

Keyword-search CVEs via the free NVD CVE API 2.0, returning id, base score, severity and published date. Read-only; price 0.0 (free).

Fetch multiple CVEs (from NVD) and aggregate a severity distribution and worst-case summary for the set. Read-only; price 0.0 (free).

Resolve A / AAAA / MX / TXT / NS / CNAME records for a domain via DNS-over-HTTPS (Cloudflare 1.1.1.1 JSON). Read-only; price 0.0 (free).

Parse SPF / DMARC / DKIM presence and policy from TXT records (via DoH). SPF all-qualifier (strict/softfail/neutral/pass), DMARC p= policy + pct + rua, and best-effort DKIM selector probing. Read-only; price 0.0 (free).

Transparent heuristic reputation score (0-100) combining domain age, TLS validity and email-auth strictness (SPF/DMARC) plus an MX signal. Every contribution is returned in `rationale` (no black box). Informational only, not a security guarantee. Read-only; price 0.0 (free).

TLS certificate issuer / validity / SAN summary sourced from public Certificate-Transparency logs (crt.sh JSON). Picks the freshest leaf and reports currentlyValid + daysUntilExpiry. Read-only; price 0.0 (free).

Domain age / registrar / expiry summary via RDAP over HTTPS (no legacy port-43 WHOIS). Returns registeredAt, expiresAt, ageDays, registrar, status and nameservers. Read-only; price 0.0 (free).

List MX records (exchange + priority, sorted) for a domain via free DNS-over-HTTPS to gauge mail deliverability. Accepts a bare domain or a full email address. Read-only; price 0.0 (free).

Fetch and parse the SPF policy from domain TXT records via DNS-over-HTTPS: presence, raw record, all-qualifier (strict/softfail/neutral/pass) and includes. Accepts a bare domain or a full email address. Read-only; price 0.0 (free).

Check whether a domain is a known disposable / throwaway email provider against a bundled list. Accepts a bare domain or a full email address. Pure; price 0.0 (free).

Detect whether an email local-part is a role/group account (e.g. info, support, admin) against a bundled list. Accepts a full email address or a bare localPart. Pure; price 0.0 (free).

Validate and normalize an email address (syntax/structure only): returns valid, normalized address, local-part and domain, plus a reason on failure. Pure; price 0.0 (free).

Search a company/person name across ALL ledgers (sanctions, licenses, recalls, pharma, bids, subsidies, grants, public comments, ordinances, ToS, real-estate, land-price). Returns hits grouped per ledger, each with matchedField, a summary, detailUrl and ledgerVerified (hash-chain integrity). ledgerVerified proves the records were not altered after they were recorded here — NOT the truth of the underlying data.

List the calling user's freshness webhook subscriptions (the stored secret is never returned).

Subscribe a machine/AI pipeline to ledger-change notifications: when a matching record changes, a signed "stale" event (with an F-037 receipt proving the change) is POSTed to your callback_url so your RAG/index can re-index. Filters: ledger (optional), entity and/or topic (case-insensitive title substring). At least one filter is required. Body is HMAC-signed with your secret (X-Receipt-Signature). Backfill never fires. Price 0.0.

Deactivate a freshness webhook subscription by id (soft delete; stops future deliveries).

Convert an amount between currencies using free, keyless public FX rates (Frankfurter/ECB), fetched on demand. Returns the rate and converted amount. Read-only; price 0.0 (free).

List all built-in VAT and sales-tax rate tables (country/region, rate, type). Deterministic; no input. Pure; price 0.0 (free).

Look up the sales-tax rate for a region from built-in tables and, if an amount is given, compute net/tax/gross. Pure; price 0.0 (free).

Compute VAT for an amount in a given country from built-in VAT rate tables: net, VAT and gross, standard or reduced rate, treating the amount as VAT-inclusive or exclusive. Pure; price 0.0 (free).

Validate the structural format of an EU VAT number (country prefix + national pattern). Format check only; no VIES call. Pure; price 0.0 (free).

Compute the center point plus width/height (km) of a geographic bounding box. Pure math; price 0.0 (free).

Great-circle (haversine) distance between two lat/lon coordinates, in kilometres and miles. Pure math; price 0.0 (free).

Forward-geocode a place / address query to coordinates via the free OpenStreetMap Nominatim API. Returns ranked results with lat/lon and display name. Read-only; price 0.0 (free).

Reverse-geocode a lat/lon coordinate to the nearest address / place via OpenStreetMap Nominatim. Read-only; price 0.0 (free).

Resolve the IANA timezone, abbreviation and current UTC offset for a lat/lon coordinate via the free Open-Meteo API. Read-only; price 0.0 (free).

Get a grant call detail plus full event timeline. Returns firstSeenAt and ledgerVerified.

Recent appearance / deadline-move / close / close-early events across all grant calls since the given ISO8601 timestamp. Each item includes firstSeenAt and ledgerVerified.

Search Japanese research-grant calls-for-proposals. Each hit includes firstSeenAt and ledgerVerified (hash-chain integrity).

Time-ordered events only for a grant call (the differentiator: when it opened, deadline moved, closed, or closed early). Includes firstSeenAt and ledgerVerified.

Verify the hash-chain integrity of a grant call (tamper detection). Returns chainValid, brokenAt (if any), checked event count, firstSeenAt and ledgerVerified.

Count business days between two ISO dates, excluding weekends and country holidays. Pure/offline; price 0.0 (free).

Determine whether an ISO date is a public holiday for a country (US/GB/JP/DE) from a built-in rule-based dataset; returns the holiday name when matched. Pure/offline; price 0.0 (free).

List the public holidays for a country in a given year from the built-in dataset. Pure/offline; price 0.0 (free).

Compute the business day N steps from an ISO date, skipping weekends and country holidays (negative offset goes backward). Pure/offline; price 0.0 (free).

Convert a wall-clock datetime (YYYY-MM-DDTHH:MM(:SS)?) from one IANA timezone to another using the platform Intl database. Pure/offline; price 0.0 (free).

Look up origin ASN, network name, prefix and country for an IP via Team Cymru origin lookup (DoH) plus RDAP. Read-only; price 0.0 (free).

Classify an IPv4/IPv6 address into special-use categories (public, private, loopback, link-local, CGNAT, reserved, etc.) from bundled IANA special-use ranges. Pure; price 0.0 (free).

Heuristically detect whether an IP belongs to a datacenter/hosting range using bundled CIDR lists. Read-only; price 0.0 (free).

Resolve the reverse-DNS (PTR) hostname(s) for an IP via free DNS-over-HTTPS. Read-only; price 0.0 (free).

Transparent heuristic IP risk score (0-100) combining classification, datacenter and reverse-DNS signals; every contribution is returned in the rationale. Informational only. Read-only; price 0.0 (free).

Turn a company/entity name into a structured English KYB / due-diligence report for foreign-inbound buyers. Aggregates cross-ledger hits (administrative sanctions, licenses, public bids, recalls, etc.) via entity_search, summarizes them (counts + deterministic risk_flags), and attaches an F-037 provenance receipt to EACH hit so the screening is auditable. No model-invented facts: every asserted fact originates from a ledger hit and carries a receipt. Informational only; not legal advice. Price 0.0.