FiatDock Calendar API

openapi: 3.2.0
info:
  title: FiatDock Calendar API
  version: 1.16.1
  contact:
    name: FiatDock
    email: osama@fiatdock.com
    url: https://fiatdock.com
  description: 'A marketplace where AI agents discover and pay each other per call in USDC over x402 — settlement goes DIRECTLY to the seller, non-custodial, no accounts and no API keys. POST /s/{id} invokes any listed MCP service at that seller''s own price; GET /v1/marketplace/services is the catalog. Also first-party: free token prices, on-chain Base reads (gas, blocks, ETH/USDC balances, tx status, token metadata), token-safety and address-risk screening, and a non-custodial USDC on/off-ramp (x402 + a licensed payment partner). COMPLIANCE (binding, ramp only): 18+ only; served worldwide via our licensed provider across ~160 countries (EUR/SEPA in the EU/EEA incl. Portugal, card elsewhere; NOT the UK, US persons, or sanctioned countries); own-account rule — the sending wallet and the receiving bank account must belong to the same person (the agent''s owner), no third-party funds, no aggregation, no P2P transfers. Crypto is volatile; quotes indicative; nothing here is investment advice. RETRIES: GET endpoints are idempotent — repeat freely. Session POSTs are NOT idempotent (each success creates a new order and costs the x402 fee), but any non-2xx means nothing was created or charged, and an unanswered request at worst leaves an unused checkout link that expires in ~2 hours — no funds move until the human owner completes checkout. Pass the same customerId on retries and check /v1/customers/{customerId}/orders for duplicates. On 429, sleep Retry-After seconds.'
  termsOfService: https://fiatdock.com/terms.html
  x-guidance: 'Start FREE: GET /v1/token/price?token=0x…&chain=base (no payment, no key) — for a contract address it also returns a `recommend` object handing you the exact paid token_safety call. Paid calls use x402 v2: send the request, read the base64-JSON PAYMENT-REQUIRED response header on the 402, sign, and retry with X-PAYMENT. Nothing is charged on a 402. Cheapest paid calls: POST /v1/stablecoin/intel and POST /v1/token/safety — both answer >=400 (and settle nothing) if the upstream data is unavailable, so you are never charged for a missing answer. Everything here is also exposed as MCP tools at https://fiatdock.com/mcp (Streamable HTTP) or `npx fiatdock-mcp` (stdio, pays automatically).'
  x-agent-rules:
    neverChargedFor:
    - A 402 — that is the price quote, not a charge. Retrying is always safe.
    - Any 4xx. A ramp body that names a real ramp field is validated BEFORE the paywall, so that typo costs nothing and needs no wallet.
    - A 5xx or an upstream failure on a paid data route — x402 settles only on <400.
    beforeYouPayAnything:
    - GET /v1/quote?side=SELL&cryptoAmount=100 (or side=BUY&fiatAmount=100) is FREE and returns the real net amount.
    - 'POST the session body with no payment header. A 400 means fix the body. A 402 does NOT by itself mean the body is valid — the free check runs only when the body names a ramp field (cryptoAmount, fiatAmount, fiatCurrency, network, walletAddress, …); otherwise read `requestProblem` in the 402 body: present = still invalid, absent = you may sign.'
    inputWeAccept:
      amounts: Numbers or strings. "100,50", "1.234,56", "1,234.56", "١٠٠", "€100" are all understood.
      walletAddress: 0x + 40 hex. A bare 40-hex string (no 0x) and surrounding whitespace are accepted.
      fiatCurrency: 'ISO code, any case. "eur", "€", "euro" → EUR. 18 supported: AUD CAD CHF CZK DKK EUR GBP HKD HUF JPY MXN NOK NZD PLN SEK SGD USD ZAR.'
      network: base | ethereum | polygon | arbitrum | optimism | avalanche | bsc. Chain ids (8453, eip155:8453) and short forms (eth, arb, op, avax, bnb) also work.
      side: Exactly "SELL" or "BUY". Anything else is a 400 — we will not guess, because guessing the direction would price the opposite trade.
    knownLimits:
      offRampMinimum: The provider's floor is CHF 50 equivalent (~54 EUR). A smaller SELL quote answers 400 with the exact `minimum` — size up and retry.
      orderStatus: Orders stay SESSION_CREATED. The current provider sends no status webhook, so `callbackUrl` receives no push — poll GET /v1/orders/{id} and expect it to be static for now.
      checkoutTtl: checkoutUrl is valid ~2 hours. Forward it to the human owner promptly.
      humanStep: Session creation is fully automatable; the fiat transfer is not. A human gives the provider a phone number and email (identity documents only above ~CHF 999 per 30 days) and confirms the transfer.
    ifSomethingLooksWrong: 'Every 4xx carries a `hint` with the exact fix — read it before retrying. Live health: GET https://fiatdock.com/status. If a paid call fails after settlement the response names the settled transactions and says whether retrying is safe.'
servers:
- url: https://fiatdock.com
tags:
- name: Calendar
paths:
  /v1/calendar/holidays:
    post:
      operationId: publicHolidays
      description: 'Every holiday Nager.Date lists for a country and year (nationwide and regional, with its types), and for one date (default today, UTC): isHoliday (a nationwide Public holiday only), the other nationwide and regional holidays that day, and the next nationwide public holiday that year. Coverage depends on the source: ~200 countries, not e.g. Saudi Arabia, the UAE or India (404); regional and observance coverage varies. A country or year it does not cover is 404, an outage 502 - not charged. Paid $0.001 USDC via x402. MCP tool: public_holidays.'
      requestBody:
        required: false
        content:
          application/json:
            example:
              country: DE
              date: '2026-10-31'
            schema:
              type: object
              properties:
                country:
                  description: Country, ISO 3166-1 alpha-2 (US, DE, GB, BR, JP …). The covered list is https://date.nager.at/api/v3/AvailableCountries. An empty body answers for DE
                  type: string
                  maxLength: 2
                  example: DE
                year:
                  description: 'Year, 1976-2076 (default: the year of `date`, else the current UTC year)'
                  type: integer
                  minimum: 1976
                  maximum: 2076
                  example: 2026
                date:
                  description: 'A date (YYYY-MM-DD) to check: is it a holiday, and which is the next one after it. Default: today (UTC) when the year is the current one'
                  type: string
                  maxLength: 10
                  example: '2026-10-31'
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicHolidays'
          description: Public holidays by country (and is this date one?)
        '400':
          description: an input the tool cannot use, or a field it does not read (not charged)
        '402':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentRequired'
          description: 'x402 v2 Payment Required: the exact requirements arrive base64-JSON in the PAYMENT-REQUIRED response header (pay $0.001 USDC on base = CAIP-2 eip155 id), then retry with the PAYMENT-SIGNATURE header (x402 v2; the v1 name X-PAYMENT is also accepted). Nothing is charged on a 402 — retrying is always safe.'
        '404':
          description: nothing to answer for this input — e.g. an unknown coin, currency, ticker or token, or a search with no match (not charged)
        '429':
          description: Rate limited (global 120/min/IP; stricter buckets on /mcp, webhook, auth). Sleep exactly Retry-After seconds, then retry.
          headers:
            Retry-After:
              schema:
                type: integer
              description: Seconds until the window resets — sleep this long, then retry
            RateLimit-Limit:
              schema:
                type: integer
              description: Requests allowed per window in this bucket
            RateLimit-Remaining:
              schema:
                type: integer
              description: Requests left in the current window (0 on 429)
            RateLimit-Reset:
              schema:
                type: integer
              description: Seconds until the window resets
        '502':
          description: the upstream source did not answer (not charged)
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.001000'
        protocols:
        - x402: {}
      tags:
      - Calendar
      summary: Public holidays
      x-summary-source: derived
    get:
      operationId: publicHolidaysGet
      description: 'Every holiday Nager.Date lists for a country and year (nationwide and regional, with its types), and for one date (default today, UTC): isHoliday (a nationwide Public holiday only), the other nationwide and regional holidays that day, and the next nationwide public holiday that year. Coverage depends on the source: ~200 countries, not e.g. Saudi Arabia, the UAE or India (404); regional and observance coverage varies. A country or year it does not cover is 404, an outage 502 - not charged. Paid $0.001 USDC via x402. MCP tool: public_holidays. Also payable with GET: send the same inputs as query parameters (ADR-0175).'
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicHolidays'
          description: Public holidays by country (and is this date one?)
        '400':
          description: an input the tool cannot use, or a field it does not read (not charged)
        '402':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentRequired'
          description: 'x402 v2 Payment Required: the exact requirements arrive base64-JSON in the PAYMENT-REQUIRED response header (pay $0.001 USDC on base = CAIP-2 eip155 id), then retry with the PAYMENT-SIGNATURE header (x402 v2; the v1 name X-PAYMENT is also accepted). Nothing is charged on a 402 — retrying is always safe.'
        '404':
          description: nothing to answer for this input — e.g. an unknown coin, currency, ticker or token, or a search with no match (not charged)
        '429':
          description: Rate limited (global 120/min/IP; stricter buckets on /mcp, webhook, auth). Sleep exactly Retry-After seconds, then retry.
          headers:
            Retry-After:
              schema:
                type: integer
              description: Seconds until the window resets — sleep this long, then retry
            RateLimit-Limit:
              schema:
                type: integer
              description: Requests allowed per window in this bucket
            RateLimit-Remaining:
              schema:
                type: integer
              description: Requests left in the current window (0 on 429)
            RateLimit-Reset:
              schema:
                type: integer
              description: Seconds until the window resets
        '502':
          description: the upstream source did not answer (not charged)
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.001000'
        protocols:
        - x402: {}
      parameters:
      - name: country
        in: query
        required: false
        schema:
          type: string
        description: Country, ISO 3166-1 alpha-2 (US, DE, GB, BR, JP …). The covered list is https://date.nager.at/api/v3/AvailableCountries. An empty body answers for DE
      - name: year
        in: query
        required: false
        schema:
          type: integer
        description: 'Year, 1976-2076 (default: the year of `date`, else the current UTC year)'
      - name: date
        in: query
        required: false
        schema:
          type: string
        description: 'A date (YYYY-MM-DD) to check: is it a holiday, and which is the next one after it. Default: today (UTC) when the year is the current one'
      tags:
      - Calendar
      summary: Public holidays get
      x-summary-source: derived
components:
  schemas:
    PaymentRequired:
      type: object
      description: The 402 body (ADR-0045). Nothing is charged and nothing is created on a 402 — retrying is always safe.
      properties:
        error:
          type: string
        priceUsd:
          type: number
          description: Price in dollars. Present on single-leg challenges; multi-leg challenges omit it — read `accepts`.
        accepts:
          type: array
          description: The exact payment terms to sign, mirrored from the PAYMENT-REQUIRED header.
          items:
            type: object
        hint:
          type: string
          description: How to pay, and what to do if you have no wallet.
        docs:
          type: string
      required:
      - error
      - accepts
      - hint
    PublicHolidays:
      type: object
      description: Paid. Public holidays by country (and is this date one?).
      properties:
        country:
          type: string
          description: ISO 3166-1 alpha-2 code
        year:
          type: number
          description: The year listed
        count:
          type: number
          description: Holidays listed for the year
        holidays:
          type: array
          items:
            type: object
            properties:
              date:
                type: string
                description: YYYY-MM-DD
              localName:
                type: string
                description: Name in the country's language
              name:
                type: string
                description: Name in English
              global:
                type: boolean
                description: True = nationwide; false = only in `regions`
              regions:
                type: array
                items:
                  type: string
                description: ISO 3166-2 subdivisions it applies in (empty when nationwide)
              types:
                type: array
                items:
                  type: string
                description: 'The source''s classification: Public, Bank, School, Authorities, Optional, Observance'
            required:
            - date
            - localName
            - name
            - global
            - regions
            - types
          description: Every holiday the source lists for the country and year, by date — nationwide and regional, all types
        dateChecked:
          type:
          - string
          - 'null'
          description: The date asked about (default today, UTC); null when another year was asked without a date
        isHoliday:
          type:
          - boolean
          - 'null'
          description: True only when a NATIONWIDE holiday of type Public falls on dateChecked; null when no date was checked
        holidaysOnDate:
          type: array
          items:
            type: object
            properties:
              date:
                type: string
                description: YYYY-MM-DD
              localName:
                type: string
                description: Name in the country's language
              name:
                type: string
                description: Name in English
              global:
                type: boolean
                description: True = nationwide; false = only in `regions`
              regions:
                type: array
                items:
                  type: string
                description: ISO 3166-2 subdivisions it applies in (empty when nationwide)
              types:
                type: array
                items:
                  type: string
                description: 'The source''s classification: Public, Bank, School, Authorities, Optional, Observance'
            required:
            - date
            - localName
            - name
            - global
            - regions
            - types
          description: Nationwide holidays on dateChecked, of any type (a Bank-only or School-only day is here but does not set isHoliday)
        regionalHolidaysOnDate:
          type: array
          items:
            type: object
            properties:
              date:
                type: string
                description: YYYY-MM-DD
              localName:
                type: string
                description: Name in the country's language
              name:
                type: string
                description: Name in English
              global:
                type: boolean
                description: True = nationwide; false = only in `regions`
              regions:
                type: array
                items:
                  type: string
                description: ISO 3166-2 subdivisions it applies in (empty when nationwide)
              types:
                type: array
                items:
                  type: string
                description: 'The source''s classification: Public, Bank, School, Authorities, Optional, Observance'
            required:
            - date
            - localName
            - name
            - global
            - regions
            - types
          description: Holidays on dateChecked that apply only in some regions
        nextHoliday:
          type:
          - object
          - 'null'
          properties:
            date:
              type: string
              description: YYYY-MM-DD
            localName:
              type: string
              description: Name in the country's language
            name:
              type: string
              description: Name in English
            global:
              type: boolean
              description: True = nationwide; false = only in `regions`
            regions:
              type: array
              items:
                type: string
              description: ISO 3166-2 subdivisions it applies in (empty when nationwide)
            types:
              type: array
              items:
                type: string
              description: 'The source''s classification: Public, Bank, School, Authorities, Optional, Observance'
          required:
          - date
          - localName
          - name
          - global
          - regions
          - types
          description: The first nationwide Public holiday after dateChecked in the same year; null when none remains that year (ask for the next year) or no date was checked
        source:
          type: string
          description: Where the calendar came from
        asOf:
          type: string
          description: ISO time the source was read (answers are cached up to 12 h)
        note:
          type: string
          description: How isHoliday is decided, and what the source does and does not cover
        defaulted:
          type: object
          properties:
            field:
              type: string
            to:
              type: string
            value:
              type: string
            note:
              type: string
          required:
          - field
          - to
          - value
          - note
          description: 'Present only when the body was empty: which subject the answer is for, and why'
      required:
      - country
      - year
      - count
      - holidays
      - dateChecked
      - isHoliday
      - holidaysOnDate
      - regionalHolidaysOnDate
      - nextHoliday
      - source
      - asOf
      - note
externalDocs:
  description: Agent skill file — what to run before acting on a token, an address or a counterparty (text/markdown, live prices and catalog)
  url: https://fiatdock.com/skill.md
x-payment-protocol:
  protocol: x402
  version: 2
  network: base
  asset: USDC
  payTo: '0xeB12bB2f52EeD33DBa6A00774E48324032Fd87C6'
  mode: per-call
  paid:
  - path: /v1/offramp/session
    method: POST
    priceUsd: 0.01
  - path: /v1/onramp/session
    method: POST
    priceUsd: 0.01
  - path: /v1/token/safety
    method: POST
    priceUsd: 0.0045
  - path: /v1/stablecoin/intel
    method: POST
    priceUsd: 0.002
  - path: /v1/chain/token-metadata
    method: POST
    priceUsd: 0.002
  - path: /v1/chain/gas-price
    method: POST
    priceUsd: 0.001
  - path: /v1/chain/block
    method: POST
    priceUsd: 0.001
  - path: /v1/chain/eth-balance
    method: POST
    priceUsd: 0.001
  - path: /v1/chain/usdc-balance
    method: POST
    priceUsd: 0.001
  - path: /v1/chain/tx-status
    method: POST
    priceUsd: 0.001
  - path: /v1/chain/address-intel
    method: POST
    priceUsd: 0.0045
  - path: /v1/chain/token-report
    method: POST
    priceUsd: 0.0045
  - path: /v1/web/read
    method: POST
    priceUsd: 0.0018
  - path: /v1/email/check
    method: POST
    priceUsd: 0.001
  - path: /v1/market/perp
    method: POST
    priceUsd: 0.001
  - path: /v1/markets/prediction
    method: POST
    priceUsd: 0.0045
  - path: /v1/defi/yields
    method: POST
    priceUsd: 0.001
  - path: /v1/fx/rates
    method: POST
    priceUsd: 0.001
  - path: /v1/chain/portfolio
    method: POST
    priceUsd: 0.0045
  - path: /v1/token/holders
    method: POST
    priceUsd: 0.0027
  - path: /v1/domain/intel
    method: POST
    priceUsd: 0.0045
  - path: /v1/web/contacts
    method: POST
    priceUsd: 0.0027
  - path: /v1/news/crypto
    method: POST
    priceUsd: 0.001
  - path: /v1/sec/filings
    method: POST
    priceUsd: 0.0027
  - path: /v1/text/prompt-check
    method: POST
    priceUsd: 0.0045
  - path: /v1/token/screener
    method: POST
    priceUsd: 0.009
  - path: /v1/papers/search
    method: POST
    priceUsd: 0.009
  - path: /v1/geo/satellite
    method: POST
    priceUsd: 0.009
  - path: /v1/web/seo-audit
    method: POST
    priceUsd: 0.009
  - path: /v1/x402/top
    method: POST
    priceUsd: 0.009
  - path: /v1/chain/ens
    method: POST
    priceUsd: 0.0027
  - path: /v1/time/convert
    method: POST
    priceUsd: 0.001
  - path: /v1/calendar/holidays
    method: POST
    priceUsd: 0.001
  - path: /v1/weather/forecast
    method: POST
    priceUsd: 0.0018
  - path: /v1/wiki/summary
    method: POST
    priceUsd: 0.0018
  - path: /v1/news/hackernews
    method: POST
    priceUsd: 0.0027
  - path: /v1/feed/read
    method: POST
    priceUsd: 0.0022
  - path: /v1/dev/package
    method: POST
    priceUsd: 0.0027
  - path: /v1/sec/financials
    method: POST
    priceUsd: 0.0045
  - path: /v1/token/verdict
    method: POST
    priceUsd: 0.009
  - path: /v1/market/backtest
    method: POST
    priceUsd: 0.009
  - path: /s/{id}
    method: POST
    priceUsd: null
    note: per-listing price; the 402 is authoritative
  free:
  - /v1/quote
  - /v1/token/price
  - /v1/orders/{partnerOrderId}
  - /v1/marketplace/services
  - /v1/marketplace/services/{id}
  - /v1/marketplace/demand
  - /v1/x402/search
  relay:
  - path: /v1/x402/call
    method: POST
    priceUsd: null
    note: carries the caller's PAYMENT-SIGNATURE to an index-listed x402 endpoint; that endpoint's 402 is authoritative and its payTo receives the money — FiatDock charges nothing here