Graded

Graded provides a quality‑graded index and paid gateway for the AI agent economy. It lets software agents pay for a single HTTP request in USDC without signup or API keys. The service continuously probes and grades APIs, offering a single endpoint that aggregates upstream services with a 25% markup and a $0.005 floor per call. Backed by the Linux Foundation and partners like Visa, Stripe, Google, and AWS, Graded aims to simplify agent‑driven API consumption and ensure reliable payment handling.

Graded publishes 1 API contract indexed on the APIs.io network: Services API. Tagged areas include Company, Artificial Intelligence, Payments, Gateways, and API-Index.

The Graded catalog on APIs.io includes 1 Spectral governance ruleset.

Graded’s developer surface includes authentication and 11 more developer resources.

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21.1/100 emerging Agent 24/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract 1 MCP Servers

Company Artificial Intelligence Payments GatewaysAPI-IndexAgentEconomy

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 21.1/100 · emerging

Contract Quality 9.2 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.1 / 9

Regulatory Posture 1.4 / 15

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments 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/.

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<a href="https://apis.io/providers/graded-sh/"><img src="https://apis.io/badge/graded-sh/card.svg" alt="Graded on APIs.io — Kin Score by API Evangelist"></a>

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 0.0 — up to +20.0 composite points Ask about this →
Developer Ergonomics scores 11.9 — up to +17.6 composite points Ask about this →
Contract Quality scores 43.5 — up to +14.1 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/graded-sh/apis.yml: open an issue on github.com/api-evangelist/graded-sh to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Graded Services API

The Services API from Graded — 1 operation(s) for services.

MCP Servers 1

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

Graded MCP Server

Remote MCP server at graded.sh.

MCP SERVER

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Graded API Rules

39 rules · 37 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 2

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

Graded Authentication

http · 1 scheme

SECURITY

Graded Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Graded Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

LLMsTxt

MCPServer

WellKnown

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: graded-sh
name: Graded
description: Graded provides a quality‑graded index and paid gateway for the AI agent economy. It lets software agents pay
  for a single HTTP request in USDC without signup or API keys. The service continuously probes and grades APIs, offering
  a single endpoint that aggregates upstream services with a 25% markup and a $0.005 floor per call. Backed by the Linux Foundation
  and partners like Visa, Stripe, Google, and AWS, Graded aims to simplify agent‑driven API consumption and ensure reliable
  payment handling.
url: https://artifacts.apis.io/graded-sh/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-10 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-10'
modified: '2026-11-10'
tags:
- Company
- Artificial Intelligence
- Payments
- Gateways
- API-Index
- AgentEconomy
tags_raw:
- Company
- AI
- Payments
- Gateway
- API-Index
- Agent-Economy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/graded-sh-agentic-access.yml
- type: Spectral
  url: rules/graded-sh-rules.yml
- type: Conformance
  url: conformance/graded-sh-conformance.yml
- type: LLMsTxt
  url: llms/graded-sh-llms.txt
- type: ToolCrosswalk
  url: mcp/graded-sh-tool-crosswalk.yml
- type: MCPServer
  url: mcp/graded-sh-mcp.yml
- type: WellKnown
  url: well-known/graded-sh-well-known.yml
- type: Hosts
  url: hosts/graded-sh-hosts.yml
- type: Vendors
  url: vendors/graded-sh-vendors.yml
- type: Authentication
  url: authentication/graded-sh-authentication.yml
- type: DomainSecurity
  url: security/graded-sh-domain-security.yml
- type: Website
  url: https://graded.sh/
apis:
- aid: graded-sh:graded-sh-services-api
  name: Graded Services API
  description: The Services API from Graded — 1 operation(s) for services.
  humanURL: https://graded.sh
  baseURL: https://graded.sh
  tags:
  - Services
  properties:
  - type: OpenAPI
    url: openapi/graded-sh-services-api-openapi.yml
x-enrichment:
  date: '2026-11-10'
  status: enriched
  artifacts_added: 18
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Graded API — frequently asked questions

Does Graded have an API?

Yes. APIs.io lists 1 API from Graded, including Graded Services API.

Is there an OpenAPI specification for the Graded API?

Yes. APIs.io indexes 1 OpenAPI specification for Graded, each linked for download from this page.

How do I authenticate with the Graded API?

Graded uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Graded Authentication.

Does Graded have an MCP server?

Yes. APIs.io lists 1 MCP server for Graded: Remote MCP server at graded.sh.

Is the Graded API ready for AI agents?

Graded has a Kin Score of 21.1 out of 100 (emerging) and an Agent Readiness score of 23.8 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

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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.

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