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OpenAPI Specification
openapi: 3.2.0
info:
title: 2s — the (most) everything Food API
version: '1'
summary: The (most) everything API.
description: 'The (most) everything API for AI agents: 575+ pay-per-call endpoints on one origin.'
contact:
name: 2s
url: https://2s.io
email: alley@2s.io
x-logo:
url: https://2s.io/icon-512.png
altText: 2s
x-guidance: 'Pay-per-call REST API for AI agents — hundreds of endpoints returning ground-truth data (US public records, company & legal identifiers, finance/SEC, crypto/web3, security & CVEs, medical codes, weather & geocoding, agriculture, energy, maritime, music, and more). Every endpoint is paid per call in USDC via x402 (Base or Solana) — no API key, no signup. Call any endpoint with no auth to get a 402 PaymentRequirements envelope, sign it (EIP-3009 on Base, partial SPL transfer on Solana), and retry with the PAYMENT-SIGNATURE header. Add ?trial=1 for one free real call per endpoint per hour to test before paying. To discover the right endpoint: GET https://2s.io/api/directory for the full catalog, or GET https://2s.io/api/search/endpoints?q=<natural-language task> for a ranked match. Per-call price is on each operation as x-payment-info (from $0.001). Batch up to 50 calls behind one payment via POST https://2s.io/api/batch/run.'
servers:
- url: https://2s.io
tags:
- name: food
paths:
/api/food/barcode-lookup:
get:
tags:
- food
summary: Resolve a food product barcode (UPC, EAN-13, EAN-8, etc.)
description: Resolve a food product barcode (UPC, EAN-13, EAN-8, etc.) to structured product metadata via Open Food Facts — the CC0 community-maintained database of >3M food products. Returns product name, brand, ingredient list, allergens, nutriments (per-100g + per-serving), Nutri-Score grade (a-e), NOVA processing classification (1-4), Eco-Score, categories, manufacturing origin, packaging, and product image URLs.
operationId: food_barcode-lookup
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized envelope: items = [product] when the barcode resolves (total 1), else [] (total 0); meta.found flags whether Open Food Facts had the product.'
content:
application/json:
schema:
type: object
required:
- data
- meta
properties:
data:
type: object
properties:
ok:
type: boolean
enum:
- true
items:
type: array
items:
type: object
properties:
barcode:
type: string
name:
type: string
nullable: true
brands:
type: string
nullable: true
categories:
type: array
items:
type: string
quantity:
type: string
nullable: true
servingSize:
type: string
nullable: true
ingredientsText:
type: string
nullable: true
allergens:
type: array
items:
type: string
imageUrl:
type: string
nullable: true
nutriscoreGrade:
type: string
nullable: true
novaGroup:
type: integer
nullable: true
ecoscoreGrade:
type: string
nullable: true
nutrientLevels:
type: object
additionalProperties:
type: string
nutriments:
type: object
additionalProperties:
anyOf:
- type: number
- type: string
countries:
type: array
items:
type: string
labels:
type: array
items:
type: string
manufacturingPlaces:
type: string
nullable: true
origins:
type: string
nullable: true
packaging:
type: array
items:
type: string
required:
- barcode
- name
- brands
- categories
- quantity
- servingSize
- ingredientsText
- allergens
- imageUrl
- nutriscoreGrade
- novaGroup
- ecoscoreGrade
- nutrientLevels
- nutriments
- countries
- labels
- manufacturingPlaces
- origins
- packaging
additionalProperties: false
total:
type: integer
nullable: true
description: Total matching rows upstream; null when unknown.
source:
$ref: '#/components/schemas/Source'
meta:
type: object
properties:
found:
type: boolean
required:
- found
additionalProperties: false
required:
- ok
- items
- total
- source
additionalProperties: false
meta:
$ref: '#/components/schemas/CallMeta'
'400':
$ref: '#/components/responses/BadRequest'
'402':
$ref: '#/components/responses/PaymentRequired'
'405':
$ref: '#/components/responses/MethodNotAllowed'
'500':
$ref: '#/components/responses/ServerError'
'502':
$ref: '#/components/responses/UpstreamError'
x-2s-id: food.barcode-lookup
x-2s-version: null
x-2s-price:
usd: 0.003
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.003000'
protocols:
- x402: {}
parameters:
- name: barcode
in: query
required: true
description: Barcode.
schema:
type: string
pattern: ^[0-9]{6,14}$
- $ref: '#/components/parameters/TrialMode'
/api/food/hygiene-uk:
get:
tags:
- food
summary: UK Food Standards Agency food hygiene ratings (FHRS) for an
description: UK Food Standards Agency food hygiene ratings (FHRS) for an establishment. Search by business name and/or postcode and get matching establishments with their hygiene rating (0-5 in England/Wales/NI; Pass / Improvement Required in Scotland), rating date, the three component scores (hygiene, structural, confidence in management — lower is better), business type, local authority, full address + postcode, and geocode. Free, Open Government Licence (commercial use permitted). Authoritative inspection data an LLM cannot recall — for food, hospitality, and consumer-safety agents.
operationId: food_hygiene-uk
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized envelope: items = matching establishments; total = full match count.'
content:
application/json:
schema:
type: object
required:
- data
- meta
properties:
data:
type: object
properties:
ok:
type: boolean
enum:
- true
items:
type: array
items:
type: object
properties:
fhrsId:
type: number
nullable: true
name:
type: string
nullable: true
businessType:
type: string
nullable: true
ratingValue:
type: string
nullable: true
ratingDate:
type: string
nullable: true
scores:
type: object
properties:
hygiene:
type: number
nullable: true
structural:
type: number
nullable: true
management:
type: number
nullable: true
required:
- hygiene
- structural
- management
additionalProperties: false
localAuthority:
type: string
nullable: true
address:
type: string
nullable: true
postcode:
type: string
nullable: true
latitude:
type: number
nullable: true
longitude:
type: number
nullable: true
required:
- fhrsId
- name
- businessType
- ratingValue
- ratingDate
- scores
- localAuthority
- address
- postcode
- latitude
- longitude
additionalProperties: false
total:
type: integer
nullable: true
description: Total matching rows upstream; null when unknown.
source:
$ref: '#/components/schemas/Source'
required:
- ok
- items
- total
- source
additionalProperties: false
meta:
$ref: '#/components/schemas/CallMeta'
'400':
$ref: '#/components/responses/BadRequest'
'402':
$ref: '#/components/responses/PaymentRequired'
'405':
$ref: '#/components/responses/MethodNotAllowed'
'500':
$ref: '#/components/responses/ServerError'
'502':
$ref: '#/components/responses/UpstreamError'
x-2s-id: food.hygiene-uk
x-2s-version: null
x-2s-price:
usd: 0.0025
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.002500'
protocols:
- x402: {}
parameters:
- name: name
in: query
required: false
description: Name to search for.
schema:
type: string
minLength: 1
maxLength: 120
- name: postcode
in: query
required: false
description: Postcode.
schema:
type: string
minLength: 2
maxLength: 12
- name: limit
in: query
required: false
description: Maximum number of results to return.
schema:
type: integer
minimum: 1
maximum: 50
- $ref: '#/components/parameters/TrialMode'
components:
schemas:
Source:
type: object
description: 'Provenance of the data: upstream provider, source URL, and license.'
properties:
provider:
type: string
description: Upstream data provider.
url:
type: string
description: Source URL or documentation link.
license:
type: string
description: License / usage terms for the data.
CallMeta:
type: object
description: Per-call meta envelope — endpoint id, cost, caller kind, settlement details.
X402PaymentRequiredV2:
type: object
description: x402 v2 PaymentRequired envelope. Pick any entry from accepts[], sign for that rail, retry with the PAYMENT-SIGNATURE header.
required:
- x402Version
- accepts
properties:
x402Version:
type: integer
const: 2
error:
type: string
description: Human-readable reason payment is required.
resource:
type: string
description: The resource URL being purchased.
accepts:
type: array
description: Payment requirement options, one per supported network (Base USDC, Solana USDC).
items:
type: object
required:
- scheme
- network
- amount
- asset
- payTo
- maxTimeoutSeconds
properties:
scheme:
type: string
enum:
- exact
network:
type: string
description: CAIP-2 network id, e.g. "eip155:8453" (Base) or "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp".
amount:
type: string
description: Price in atomic asset units (USDC has 6 decimals).
asset:
type: string
description: Asset contract address / mint.
payTo:
type: string
description: Treasury address to pay.
maxTimeoutSeconds:
type: integer
extra:
type: object
description: 'Rail-specific extras (EVM: EIP-712 domain name/version; Solana: feePayer).'
additionalProperties: true
extensions:
type: object
description: Optional discovery metadata (e.g. bazaar input/output schemas).
additionalProperties: true
responses:
PaymentRequired:
description: Payment required. Body contains the x402 PaymentRequirements envelope with a multi-network accepts array; the per-call price is in accepts[].amount (and on the operation as x-2s-price). Sign for whichever rail you hold USDC on (EIP-3009 for Base, partial SPL transfer for Solana) and retry with the PAYMENT-SIGNATURE header (X-PAYMENT also accepted for v1 clients).
content:
application/json:
schema:
$ref: '#/components/schemas/X402PaymentRequiredV2'
UpstreamError:
description: Upstream provider error.
MethodNotAllowed:
description: Method not allowed — see `Allow` header for the supported method.
ServerError:
description: Internal server error.
BadRequest:
description: Bad request — invalid parameters.
parameters:
TrialMode:
name: trial
in: query
required: false
description: 'Try before you buy. Set to 1 for one free real call per endpoint per hour — no wallet or payment needed — to verify the endpoint before paying. Equivalent to sending the "X-2s-Trial: 1" request header. Works on every endpoint.'
schema:
type: integer
enum:
- 1
securitySchemes:
x402Payment:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: 'x402 protocol v2: base64-encoded PaymentPayload. Call any paid endpoint without auth to receive a 402 with a multi-network PaymentRequirements envelope. Sign for either rail: EIP-3009 transferWithAuthorization (Base USDC) OR a partial SPL token transfer (Solana USDC). Retry with PAYMENT-SIGNATURE header. X-PAYMENT is also accepted for v1 buyer clients. See https://x402.org.'