SchemaSure website screenshot

SchemaSure

Structured data extraction API that converts unstructured text or HTML into JSON guaranteed to validate against a caller-supplied JSON Schema, or returns a typed error at no charge. Access is gated by x402 pay-per-call micropayments (USDC on Base), with no accounts or API keys.

SchemaSure publishes 4 APIs on the APIs.io network, including Health API, Image extraction · x402 V2 API, Legacy V1 evaluation API, and 1 more. Tagged areas include Structured Data Extraction, text-to-JSON, JSON Schema, Document Parsing, and Data Cleaning.

SchemaSure’s developer surface includes authentication, sandbox, pricing, support, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub
41.2/100 developing ▬ flat Agent 41/100 agent ready Front door AI 4/6 moderate Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
1 APIs 1 MCP Servers
Structured Data Extractiontext-to-JSONJSON SchemaDocument ParsingData CleaningLLM ToolingAI Agentsx402-micropaymentsAgent-NativeA2AMCP

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 41.2/100 · developing
Contract Quality 8.9 / 19
Developer Ergonomics 6.3 / 15
Access Clarity 7.9 / 15
Operational Transparency 1.0 / 10
Contract Governance 0.4 / 9
Discoverability 5.3 / 8
Regulatory Posture 4.6 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 41/100 · agent ready
Machine-Readable Contract 18 / 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 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 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 Horizontal (data, software, accessibility, platform) 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/schemasure: 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 →

APIs 4

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

SchemaSure Health API

The Health API from SchemaSure — 1 operation(s) for health.

SchemaSure Image extraction · x402 V2 API

The Image extraction · x402 V2 API from SchemaSure — 1 operation(s) for image extraction · x402 v2.

SchemaSure Legacy V1 evaluation API

The Legacy V1 evaluation API API from SchemaSure — 1 operation(s) for legacy v1 evaluation api.

SchemaSure Primary x402 V2 API

The Primary x402 V2 API API from SchemaSure — 1 operation(s) for primary x402 v2 api.

MCP Servers 1

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

SchemaSure MCP Server

First-party MCP client, local-stdio only (npx -y @noamjose/schemasure); no hosted endpoint — /mcp probed 404 on 2026-09-03.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Schemasure Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Schemasure Rate Limits

0 limits

RATE LIMITS

Security Posture 3

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

Schemasure Authentication

2 schemes

SECURITY

Schemasure Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Schemasure Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Sandbox
Sandbox

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle
 Conventions
Conventions
 DataModel
DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs

Access & Security 5

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 SecurityTxt
SecurityTxt
 Security
Security
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Support
Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Other 2

Properties that don't map to a standard resource type

Overlay
Overlay
 APIsJson
APIsJson

Source (apis.yml)

apis.yml Raw ↑ 
name: SchemaSure
description: Structured data extraction API that converts unstructured text or HTML into JSON guaranteed to validate against
  a caller-supplied JSON Schema, or returns a typed error at no charge. Access is gated by x402 pay-per-call micropayments
  (USDC on Base), with no accounts or API keys.
url: https://schemasure.com/apis.json
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
created: '2026-07-19'
modified: '2026-09-03'
specificationVersion: '0.23'
tags:
- Structured Data Extraction
- text-to-JSON
- JSON Schema
- Document Parsing
- Data Cleaning
- LLM Tooling
- AI Agents
- x402-micropayments
- Agent-Native
- A2A
- MCP
tags_raw:
- structured-data-extraction
- text-to-JSON
- JSON-Schema
- document-parsing
- data-cleaning
- LLM-tooling
- AI-agents
- x402-micropayments
- agent-native
- A2A
- MCP
apis:
- aid: schemasure:schemasure-health-api
  name: SchemaSure Health API
  description: The Health API from SchemaSure — 1 operation(s) for health.
  humanURL: https://schemasure.com
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/schemasure-health-api-openapi.yml
  - type: LLMsTxt
    url: llms/schemasure-llms.txt
  - type: Documentation
    url: https://schemasure.com/llms.txt
  - type: ErrorCatalog
    url: errors/schemasure-problem-types.yml
  - type: ToolCrosswalk
    url: mcp/schemasure-tool-crosswalk.yml
- aid: schemasure:schemasure-image-extraction-x402-v2-api
  name: SchemaSure Image extraction · x402 V2 API
  description: The Image extraction · x402 V2 API from SchemaSure — 1 operation(s) for image extraction · x402 v2.
  humanURL: https://schemasure.com
  tags:
  - Image extraction · x402 V2
  properties:
  - type: OpenAPI
    url: openapi/schemasure-image-extraction-x402-v2-api-openapi.yml
  - type: LLMsTxt
    url: llms/schemasure-llms.txt
  - type: Documentation
    url: https://schemasure.com/llms.txt
  - type: ErrorCatalog
    url: errors/schemasure-problem-types.yml
  - type: ToolCrosswalk
    url: mcp/schemasure-tool-crosswalk.yml
- aid: schemasure:schemasure-legacy-v1-evaluation-api-api
  name: SchemaSure Legacy V1 evaluation API
  description: The Legacy V1 evaluation API API from SchemaSure — 1 operation(s) for legacy v1 evaluation api.
  humanURL: https://schemasure.com
  tags:
  - Legacy V1 evaluation API
  properties:
  - type: OpenAPI
    url: openapi/schemasure-legacy-v1-evaluation-api-api-openapi.yml
  - type: LLMsTxt
    url: llms/schemasure-llms.txt
  - type: Documentation
    url: https://schemasure.com/llms.txt
  - type: ErrorCatalog
    url: errors/schemasure-problem-types.yml
  - type: ToolCrosswalk
    url: mcp/schemasure-tool-crosswalk.yml
- aid: schemasure:schemasure-primary-x402-v2-api-api
  name: SchemaSure Primary x402 V2 API
  description: The Primary x402 V2 API API from SchemaSure — 1 operation(s) for primary x402 v2 api.
  humanURL: https://schemasure.com
  tags:
  - Primary x402 V2 API
  properties:
  - type: OpenAPI
    url: openapi/schemasure-primary-x402-v2-api-api-openapi.yml
  - type: LLMsTxt
    url: llms/schemasure-llms.txt
  - type: Documentation
    url: https://schemasure.com/llms.txt
  - type: ErrorCatalog
    url: errors/schemasure-problem-types.yml
  - type: ToolCrosswalk
    url: mcp/schemasure-tool-crosswalk.yml
maintainers:
- FN: SchemaSure Support
  url: https://schemasure.com
  email: support@schemasure.com
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 95
  at: '2026-07-19T22:23:17.395Z'
common:
- type: Overlay
  url: overlays/schemasure-openapi-overlay.yaml
- type: Website
  url: https://schemasure.com
- type: VulnerabilityDisclosure
  url: security/schemasure-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/schemasure-domain-security.yml
- type: WellKnown
  url: well-known/schemasure-well-known.yml
- type: SecurityTxt
  url: well-known/schemasure-security.txt
- type: Security
  url: security/schemasure-vulnerability-disclosure.yml
- type: Packages
  url: packages/schemasure-packages.yml
- type: SDKs
  url: packages/schemasure-packages.yml
- type: MCPServer
  url: mcp/schemasure-mcp.yml
  description: First-party MCP client, local-stdio only (npx -y @noamjose/schemasure); no hosted endpoint — /mcp probed 404
    on 2026-09-03.
- type: Conformance
  url: conformance/schemasure-conformance.yml
- type: Lifecycle
  url: lifecycle/schemasure-lifecycle.yml
- type: Authentication
  url: authentication/schemasure-authentication.yml
- type: Sandbox
  url: sandbox/schemasure-sandbox.yml
- type: Conventions
  url: conventions/schemasure-conventions.yml
- type: DataModel
  url: data-model/schemasure-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Plans
  url: plans/schemasure-plans-pricing.yml
- type: RateLimits
  url: rate-limits/schemasure-rate-limits.yml
- type: APIsJson
  url: https://schemasure.com/apis.json
  description: Provider-published APIs.json 0.18 portfolio discovery index (also saved at well-known/schemasure-apis-json.json).
- type: Pricing
  url: https://schemasure.com/.well-known/pricing.json
- type: TermsOfService
  url: https://schemasure.com/terms
- type: PrivacyPolicy
  url: https://schemasure.com/privacy
- type: Support
  url: mailto:support@schemasure.com
image: https://schemasure.com/icon.svg
x-enrichment:
  date: '2026-09-03'
  status: enriched
  artifacts_added: 30
  pass: local-v2

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this
  • find_providersBrowse and filter every provider in the catalog.
  • get_provider_artifactsEvery artifact this provider publishes, grouped by type.
  • get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
  • get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
  • get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
  • get_provider_ratingPRO — composite, band, trend and facet scores.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This provider 
curl "https://apis.io/api/v1/providers/schemasure"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/schemasure/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/schemasure/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.