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OpenAPI Specification
openapi: 3.2.0
info:
title: 2s — the (most) everything Edu 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: edu
paths:
/api/edu/college-scorecard:
get:
tags:
- edu
summary: Search US colleges + universities via the Department of
description: 'Search US colleges + universities via the Department of Education College Scorecard API. Filter by free-text name (q), OPE/IPEDS school id, state, city, zip, ownership (1=Public | 2=Private nonprofit | 3=Private for-profit), predominant degree level (0=Not classified | 1=Certificate | 2=Associate | 3=Bachelor | 4=Graduate), enrollment range. Returns a curated field set per school: identity (name, alias, URL, location), classification (Carnegie, locale, religious affiliation, minority-serving designation), latest admissions (admit rate, SAT/ACT midpoints), cost (in-state + out-of-state tuition, total cost of attendance), aid (median debt, federal-loan rate, Pell rate), completion rate, 10-year median earnings, repayment rate, lat/lon. Every accredited US institution. Use perPage + page for pagination; page is 0-indexed.'
operationId: edu_college-scorecard
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized envelope: items = College Scorecard school rows (dotted field names like ''school.name'', ''latest.student.size''); total = upstream match count; page = 0-indexed page block.'
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:
id:
type: number
nullable: true
description: OPE/IPEDS school id.
school.name:
type: string
nullable: true
school.alias:
type: string
nullable: true
school.city:
type: string
nullable: true
school.state:
type: string
nullable: true
school.zip:
type: string
nullable: true
school.school_url:
type: string
nullable: true
school.price_calculator_url:
type: string
nullable: true
school.ownership:
type: number
nullable: true
description: 1=Public, 2=Private nonprofit, 3=Private for-profit.
school.locale:
type: number
nullable: true
school.carnegie_basic:
type: number
nullable: true
school.degrees_awarded.predominant:
type: number
nullable: true
school.degrees_awarded.highest:
type: number
nullable: true
school.minority_serving.historically_black:
type: number
nullable: true
school.minority_serving.hispanic:
type: number
nullable: true
school.minority_serving.tribal:
type: number
nullable: true
school.religious_affiliation:
type: number
nullable: true
latest.student.size:
type: number
nullable: true
latest.admissions.admission_rate.overall:
type: number
nullable: true
latest.admissions.sat_scores.midpoint.math:
type: number
nullable: true
latest.admissions.sat_scores.midpoint.critical_reading:
type: number
nullable: true
latest.admissions.act_scores.midpoint.cumulative:
type: number
nullable: true
latest.cost.tuition.in_state:
type: number
nullable: true
latest.cost.tuition.out_of_state:
type: number
nullable: true
latest.cost.attendance.academic_year:
type: number
nullable: true
latest.aid.median_debt.completers.overall:
type: number
nullable: true
latest.aid.federal_loan_rate:
type: number
nullable: true
latest.aid.pell_grant_rate:
type: number
nullable: true
latest.completion.completion_rate_4yr_150nt:
type: number
nullable: true
latest.completion.completion_rate_less_than_4yr_150nt:
type: number
nullable: true
latest.earnings.10_yrs_after_entry.median:
type: number
nullable: true
latest.earnings.10_yrs_after_entry.working_not_enrolled.mean_earnings:
type: number
nullable: true
latest.repayment.3_yr_repayment.overall:
type: number
nullable: true
location.lat:
type: number
nullable: true
location.lon:
type: number
nullable: true
additionalProperties: {}
description: Upstream Scorecard row with dotted field names. Keys above are the default field set; the fields param swaps in any other Scorecard fields.
total:
type: integer
nullable: true
description: Total matching rows upstream; null when unknown.
source:
$ref: '#/components/schemas/Source'
page:
type: object
properties:
number:
type: integer
size:
type: integer
pages:
type: integer
nullable: true
required:
- number
- size
- pages
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':
$ref: '#/components/responses/UpstreamError'
x-2s-id: edu.college-scorecard
x-2s-version: null
x-2s-price:
usd: 0.003
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.003000'
protocols:
- x402: {}
parameters:
- name: q
in: query
required: false
description: Free-text search query.
schema:
type: string
minLength: 1
maxLength: 120
- name: schoolId
in: query
required: false
description: School ID.
schema:
type: integer
minimum: 1
- name: state
in: query
required: false
description: US state — two-letter postal abbreviation (e.g. CA) or full name.
schema:
type: string
minLength: 2
maxLength: 2
pattern: ^[A-Za-z]{2}$
- name: city
in: query
required: false
description: City name to filter by.
schema:
type: string
minLength: 2
maxLength: 80
- name: zip
in: query
required: false
description: US ZIP code.
schema:
type: string
pattern: ^\d{5}$
- name: ownership
in: query
required: false
description: Ownership.
schema:
type: integer
- name: degreePredominant
in: query
required: false
description: Degree predominant.
schema:
type: integer
- name: minEnrollment
in: query
required: false
description: Min enrollment.
schema:
type: integer
minimum: 0
- name: maxEnrollment
in: query
required: false
description: Max enrollment.
schema:
type: integer
minimum: 1
- name: perPage
in: query
required: false
description: Number of results to return per page.
schema:
type: integer
minimum: 1
maximum: 100
default: 20
- name: page
in: query
required: false
description: Page number (1-based) for paginated results.
schema:
type: integer
minimum: 0
default: 0
- name: fields
in: query
required: false
description: Fields.
schema:
type: string
maxLength: 2000
- $ref: '#/components/parameters/TrialMode'
/api/edu/school-lookup:
get:
tags:
- edu
summary: Look up any US public K-12 school (~102k, NCES Common Core
description: 'Look up any US public K-12 school (~102k, NCES Common Core of Data). Search by name (partial), district (LEA name, partial), state (2-letter), city, zip, or exact ncessch (12-digit NCES id). Each school: NCES id, name, district + LEA id, address, phone, lat/lon, school level (1=primary 2=middle 3=high 4=other) and type (1=regular 2=special-ed 3=vocational 4=alternative), charter/magnet/virtual flags, enrollment, teacher FTE, grade span, CCD year. Results ordered by enrollment. Higher-ed sibling: /api/edu/college-scorecard. Public-domain federal data.'
operationId: edu_school-lookup
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized envelope: items = US public K-12 schools (NCES CCD rows, enrollment-ordered); total = null (LIKE search returns a capped page, no 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:
ncessch:
type: string
name:
type: string
nullable: true
district:
type: string
nullable: true
leaid:
type: string
nullable: true
state:
type: string
nullable: true
city:
type: string
nullable: true
street:
type: string
nullable: true
zip:
type: string
nullable: true
phone:
type: string
nullable: true
latitude:
type: number
nullable: true
longitude:
type: number
nullable: true
schoolLevel:
type: number
nullable: true
schoolType:
type: number
nullable: true
charter:
type: boolean
nullable: true
magnet:
type: boolean
nullable: true
virtual:
type: boolean
nullable: true
enrollment:
type: number
nullable: true
teachersFte:
type: number
nullable: true
lowestGrade:
type: number
nullable: true
highestGrade:
type: number
nullable: true
year:
type: number
nullable: true
required:
- ncessch
- name
- district
- leaid
- state
- city
- street
- zip
- phone
- latitude
- longitude
- schoolLevel
- schoolType
- charter
- magnet
- virtual
- enrollment
- teachersFte
- lowestGrade
- highestGrade
- year
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':
$ref: '#/components/responses/UpstreamError'
x-2s-id: edu.school-lookup
x-2s-version: null
x-2s-price:
usd: 0.0036
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.003600'
protocols:
- x402: {}
parameters:
- name: name
in: query
required: false
description: Name to search for.
schema:
type: string
minLength: 2
maxLength: 120
- name: district
in: query
required: false
description: District.
schema:
type: string
minLength: 2
maxLength: 120
- name: state
in: query
required: false
description: US state — two-letter postal abbreviation (e.g. CA) or full name.
schema:
type: string
minLength: 2
maxLength: 2
- name: city
in: query
required: false
description: City name to filter by.
schema:
type: string
minLength: 2
maxLength: 60
- name: zip
in: query
required: false
description: US ZIP code.
schema:
type: string
pattern: ^\d{5}$
- name: ncessch
in: query
required: false
description: Ncessch.
schema:
type: string
pattern: ^\d{12}$
- name: limit
in: query
required: false
description: Maximum number of results to return.
schema:
type: integer
minimum: 1
maximum: 100
default: 10
- name: offset
in: query
required: false
description: Number of results to skip before returning (pagination offset).
schema:
type: integer
minimum: 0
default: 0
- $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.'