ScalpStream

ScalpStream operates a family of machine-payable data APIs built for autonomous agents: RecallScout (active US FDA, NHTSA and CPSC recalls with severity normalised across the three regulators), AirScout (global air quality with an EPA-based outdoor-exertion verdict and the cleanest window ahead), BorderScout (all 85 US ports of entry ranked by drive-plus-wait time per lane), FuelScout (cheapest fuel - station-level for Spain, France and Italy, official regional averages for the US) and ScalpStream Research (impersonal ranked options, dividend, crypto and yield feeds). Every service is a plain HTTPS GET priced at a flat $0.01 per request and settled per request over x402 (HTTP 402) in USDC on Base, Arbitrum or Polygon or XRP/RLUSD on the XRP Ledger - no accounts, no API keys, no subscriptions - with a free preview on every host, an A2A agent card and JSON-RPC endpoint per service, and a first-party local MCP server (scalpmcp) that buys from all of them with the user's own wallet.

ScalpStream is listed with 5 APIs on the APIs.io network. Tagged areas include Company, Agents, A2A, x402, and Micropayments.

ScalpStream’s developer surface includes engineering blog, documentation, getting-started guide, pricing, authentication, changelog, sandbox, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

25.3/100 emerging ▬ flat Agent 17/100 agent aware Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

5 APIs 1 MCP Servers

Company Agents A2A x402 Micropayments MCP Open DataProduct RecallsAir QualityBorder CrossingsFuel Prices Market Research Public Safety Cryptocurrency USDCXRP Ledgerllms-txt JSON Schema

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 25.3/100 · emerging

Contract Quality 2.6 / 21

Developer Ergonomics 6.3 / 17

Access Clarity 1.8 / 17

Operational Transparency 2.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.5 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/scalpstream-com: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

JSON Schema

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

llms.txt

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

x402

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

RecallScout

Machine-payable US recall lookups over x402. Given a product, brand, ingredient or vehicle (make/model/year), returns active recalls across FDA food/drug/device enforcement, NHT...

AirScout

Machine-payable air-quality queries over x402 with global coverage: current US AQI and pollutant breakdown for a lat/lon, an EPA (AirNow) based verdict on whether it is safe to ...

BorderScout

Machine-payable US border-crossing queries over x402. Ranks all 85 US ports of entry by all-in time - the drive there plus the live CBP wait once there - per lane type (standard...

FuelScout

Machine-payable cheapest-fuel queries over x402. Station-level prices for Spain, France and Italy and official regional averages for the US, by location and grade, with an optio...

ScalpStream Research

Machine-payable, impersonal research feeds over x402: ranked 0-30 DTE options candidates (/picks), dividend and tax-free municipal income (/dividends), crypto scalp candidates (...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

ScalpStream MCP Server

Two MCP surfaces exist and they are different things. (1) FIRST-PARTY, LOCAL-STDIO: the operator publishes `scalpstream-mcp`, a Go MCP server (binary `scalpmcp`) that a user ins...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Scalpstream Com Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Scalpstream Com Rate Limits

0 limits

RATE LIMITS

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Scalpstream Com Research

0 properties

JSON SCHEMA

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Scalpstream Com Authentication

0 schemes

SECURITY

Scalpstream Com Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance

Conventions

ErrorCatalog

Lifecycle

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SourceCode

SourceCode

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

Company 3

The organization behind the API

Blog

Blog

BlogRSS

BlogRSS

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

X-X402

X-X402

X-RegulatoryPosture

X-RegulatoryPosture

Source (apis.yml)

aid: scalpstream-com
name: ScalpStream
description: 'ScalpStream operates a family of machine-payable data APIs built for autonomous agents: RecallScout (active
  US FDA, NHTSA and CPSC recalls with severity normalised across the three regulators), AirScout (global air quality with
  an EPA-based outdoor-exertion verdict and the cleanest window ahead), BorderScout (all 85 US ports of entry ranked by drive-plus-wait
  time per lane), FuelScout (cheapest fuel - station-level for Spain, France and Italy, official regional averages for the
  US) and ScalpStream Research (impersonal ranked options, dividend, crypto and yield feeds). Every service is a plain HTTPS
  GET priced at a flat $0.01 per request and settled per request over x402 (HTTP 402) in USDC on Base, Arbitrum or Polygon
  or XRP/RLUSD on the XRP Ledger - no accounts, no API keys, no subscriptions - with a free preview on every host, an A2A
  agent card and JSON-RPC endpoint per service, and a first-party local MCP server (scalpmcp) that buys from all of them with
  the user''s own wallet.'
url: https://raw.githubusercontent.com/api-evangelist/scalpstream-com/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - dv1-321/scalpstream-mcp
  open_source: unknown
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
image: https://recallscout.scalpstream.com/icon.png
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-19 (was stub; the harvest named the company after its RecallScout agent - the operator
  is ScalpStream, per every agent host footer, the marketing site and hello@scalpstream.com)
specificationVersion: '0.20'
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 40
  pass: local-v3
created: '2026-09-19'
modified: '2026-10-06'
tags:
- Company
- Agents
- A2A
- x402
- Micropayments
- MCP
- Open Data
- Product Recalls
- Air Quality
- Border Crossings
- Fuel Prices
- Market Research
- Public Safety
- Cryptocurrency
- USDC
- XRP Ledger
- llms-txt
- JSON Schema
tags_raw:
- Company
- Agents
- A2A
- x402
- Micropayments
- MCP
- Open Data
- Product Recalls
- Air Quality
- Border Crossings
- Fuel Prices
- Market Research
- Public Safety
- Cryptocurrency
- USDC
- XRP Ledger
- llms-txt
- JSON Schema
- JSON-Schema
apis:
- name: RecallScout
  image: https://recallscout.scalpstream.com/icon.png
  description: Machine-payable US recall lookups over x402. Given a product, brand, ingredient or vehicle (make/model/year),
    returns active recalls across FDA food/drug/device enforcement, NHTSA vehicle safety campaigns and CPSC consumer recalls
    in one query, with severity normalised onto one scale and the basis for each rating stated, plus hazard, remedy and the
    lot codes / UPCs needed to tell whether a specific unit is affected. $0.01 per request; free preview.
  humanURL: https://recallscout.scalpstream.com/
  baseURL: https://recallscout.scalpstream.com
  tags:
  - Product Recalls
  - Public Safety
  - FDA
  - NHTSA
  - CPSC
  - x402
  - A2A
  properties:
  - type: AgentCard
    url: a2a/scalpstream-com-a2a.yml
  - type: AgentCard
    url: https://recallscout.scalpstream.com/.well-known/agent-card.json
  - type: Documentation
    url: https://recallscout.scalpstream.com/.well-known/x402
  - type: LLMsTxt
    url: llms/scalpstream-com-recallscout-llms.txt
  - type: X-X402
    url: x402/scalpstream-com-x402.yml
  - type: X-X402Discovery
    url: well-known/scalpstream-com-recallscout-x402.json
  - type: Sandbox
    url: sandbox/scalpstream-com-sandbox.yml
  - type: ErrorCatalog
    url: errors/scalpstream-com-problem-types.yml
  - type: DataModel
    url: data-model/scalpstream-com-data-model.yml
- name: AirScout
  image: https://airscout.scalpstream.com/icon.png
  description: 'Machine-payable air-quality queries over x402 with global coverage: current US AQI and pollutant breakdown
    for a lat/lon, an EPA (AirNow) based verdict on whether it is safe to exercise outdoors, and the cleanest contiguous window
    in the next 7 days for a session of a given length. Modelled data (Copernicus CAMS via Open-Meteo), not a street-level
    sensor. $0.01 per request; free preview.'
  humanURL: https://airscout.scalpstream.com/
  baseURL: https://airscout.scalpstream.com
  tags:
  - Air Quality
  - Environment
  - Weather
  - Health
  - x402
  - A2A
  properties:
  - type: AgentCard
    url: a2a/scalpstream-com-a2a.yml
  - type: AgentCard
    url: https://airscout.scalpstream.com/.well-known/agent-card.json
  - type: Documentation
    url: https://airscout.scalpstream.com/.well-known/x402
  - type: LLMsTxt
    url: llms/scalpstream-com-airscout-llms.txt
  - type: X-X402
    url: x402/scalpstream-com-x402.yml
  - type: X-X402Discovery
    url: well-known/scalpstream-com-airscout-x402.json
  - type: Sandbox
    url: sandbox/scalpstream-com-sandbox.yml
  - type: ErrorCatalog
    url: errors/scalpstream-com-problem-types.yml
  - type: DataModel
    url: data-model/scalpstream-com-data-model.yml
- name: BorderScout
  image: https://borderscout.scalpstream.com/icon.png
  description: Machine-payable US border-crossing queries over x402. Ranks all 85 US ports of entry by all-in time - the drive
    there plus the live CBP wait once there - per lane type (standard, SENTRI/NEXUS, Ready, FAST) for passenger, commercial
    or pedestrian traffic, because the nearest crossing is often not the fastest. $0.01 per request; free preview.
  humanURL: https://borderscout.scalpstream.com/
  baseURL: https://borderscout.scalpstream.com
  tags:
  - Border Crossings
  - Travel
  - Logistics
  - Transportation
  - x402
  - A2A
  properties:
  - type: AgentCard
    url: a2a/scalpstream-com-a2a.yml
  - type: AgentCard
    url: https://borderscout.scalpstream.com/.well-known/agent-card.json
  - type: Documentation
    url: https://borderscout.scalpstream.com/.well-known/x402
  - type: LLMsTxt
    url: llms/scalpstream-com-borderscout-llms.txt
  - type: X-X402
    url: x402/scalpstream-com-x402.yml
  - type: X-X402Discovery
    url: well-known/scalpstream-com-borderscout-x402.json
  - type: Sandbox
    url: sandbox/scalpstream-com-sandbox.yml
  - type: ErrorCatalog
    url: errors/scalpstream-com-problem-types.yml
  - type: DataModel
    url: data-model/scalpstream-com-data-model.yml
- name: FuelScout
  image: https://fuelscout.scalpstream.com/icon.png
  description: Machine-payable cheapest-fuel queries over x402. Station-level prices for Spain, France and Italy and official
    regional averages for the US, by location and grade, with an optional smart ranking that weighs the detour (fuel burned
    plus time) against the pump price. Prices are official government open data and may be delayed. $0.01 per request; free
    preview.
  humanURL: https://fuelscout.scalpstream.com/
  baseURL: https://fuelscout.scalpstream.com
  tags:
  - Fuel Prices
  - Energy
  - Automotive
  - Open Data
  - x402
  - A2A
  properties:
  - type: AgentCard
    url: a2a/scalpstream-com-a2a.yml
  - type: AgentCard
    url: https://fuelscout.scalpstream.com/.well-known/agent-card.json
  - type: Documentation
    url: https://fuelscout.scalpstream.com/.well-known/x402
  - type: LLMsTxt
    url: llms/scalpstream-com-fuelscout-llms.txt
  - type: X-X402
    url: x402/scalpstream-com-x402.yml
  - type: X-X402Discovery
    url: well-known/scalpstream-com-fuelscout-x402.json
  - type: Sandbox
    url: sandbox/scalpstream-com-sandbox.yml
  - type: ErrorCatalog
    url: errors/scalpstream-com-problem-types.yml
  - type: DataModel
    url: data-model/scalpstream-com-data-model.yml
- name: ScalpStream Research
  image: https://feed.scalpstream.com/icon.png
  description: 'Machine-payable, impersonal research feeds over x402: ranked 0-30 DTE options candidates (/picks), dividend
    and tax-free municipal income (/dividends), crypto scalp candidates (/crypto) and risk-adjusted crypto yields (/yields).
    Built to be polled - free previews carry a board fingerprint served as a weak HTTP ETag so an agent can learn the board
    has changed with a 304 before paying, and /schema publishes JSON Schema 2020-12 for every paid response. Paid requests
    require the header X-Compliance-Attestation. Not investment advice.'
  humanURL: https://feed.scalpstream.com/
  baseURL: https://feed.scalpstream.com
  tags:
  - Market Research
  - Options
  - Dividends
  - Cryptocurrency
  - DeFi
  - Trading Signals
  - x402
  - A2A
  properties:
  - type: JSONSchema
    url: json-schema/scalpstream-com-research-schema.json
  - type: JSONSchema
    url: https://feed.scalpstream.com/schema
  - type: AgentCard
    url: a2a/scalpstream-com-a2a.yml
  - type: AgentCard
    url: https://feed.scalpstream.com/.well-known/agent-card.json
  - type: Documentation
    url: https://feed.scalpstream.com/.well-known/x402
  - type: LLMsTxt
    url: llms/scalpstream-com-research-llms.txt
  - type: X-X402
    url: x402/scalpstream-com-x402.yml
  - type: X-X402Discovery
    url: well-known/scalpstream-com-research-x402.json
  - type: Sandbox
    url: sandbox/scalpstream-com-sandbox.yml
  - type: ErrorCatalog
    url: errors/scalpstream-com-problem-types.yml
  - type: DataModel
    url: data-model/scalpstream-com-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://www.scalpstream.com/blog
  type: Blog
- url: https://www.scalpstream.com/blog-feed.xml
  type: BlogRSS
- type: DomainSecurity
  url: security/scalpstream-com-domain-security.yml
- type: Website
  url: https://scalpstream.com/
- type: Documentation
  url: https://recallscout.scalpstream.com/.well-known/x402
- type: GettingStarted
  url: https://www.scalpstream.com/#Products
- type: Pricing
  url: https://www.scalpstream.com/
- type: GitHubOrganization
  url: https://github.com/DV1-321
- type: SourceCode
  url: https://github.com/DV1-321/scalpstream-mcp
- type: AgentCard
  url: a2a/scalpstream-com-a2a.yml
- type: MCPServer
  url: mcp/scalpstream-com-mcp.yml
- type: Packages
  url: packages/scalpstream-com-packages.yml
- type: WellKnown
  url: well-known/scalpstream-com-well-known.yml
- type: X-X402
  url: x402/scalpstream-com-x402.yml
- type: LLMsTxt
  url: llms/scalpstream-com-llms.txt
- type: LLMsTxt
  url: https://recallscout.scalpstream.com/llms.txt
- type: Conformance
  url: conformance/scalpstream-com-conformance.yml
- type: Conventions
  url: conventions/scalpstream-com-conventions.yml
- type: Authentication
  url: authentication/scalpstream-com-authentication.yml
- type: ErrorCatalog
  url: errors/scalpstream-com-problem-types.yml
- type: Lifecycle
  url: lifecycle/scalpstream-com-lifecycle.yml
- type: Plans
  url: plans/scalpstream-com-plans-pricing.yml
- type: RateLimits
  url: rate-limits/scalpstream-com-rate-limits.yml
- type: ChangeLog
  url: changelog/scalpstream-com-changelog.yml
- type: DataModel
  url: data-model/scalpstream-com-data-model.yml
- type: Sandbox
  url: sandbox/scalpstream-com-sandbox.yml
- type: X-RegulatoryPosture
  url: regulatory/scalpstream-com-regulatory-posture.yml
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://recallscout.scalpstream.com/.well-known/agent-card.json
  grade: conformant
  protocol_version: 0.3.0
  control: 404

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