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KG-NINJA Registration API

Optional anonymous, short-lived agent registration

KG-NINJA Registration API is one of 10 APIs that KG-NINJA publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Registration. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and a getting-started guide.

This API exposes 3 operations across 3 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 0.4.3.

Requests are made against a single base URL, /.

3 operations 3 paths 4 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
0.4.3
Base URL
https://agent-economy.kgninja.dev/mcp
Authentication
HTTP Bearer
License
UNLICENSED
Resource Areas
1

Authentication & Security 1

KG-NINJA Registration API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (signed anonymous registration receipt) (agentRegistration).

  • agentRegistration — Optional 15-minute service-local receipt used only to inspect its own registration claim. It grants no API access and does not authorize payment.

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Registration 3

Optional anonymous, short-lived agent registration

GET
/auth.md
Get agent registration, anonymous-access, and x402 guidance
getAuthenticationGuide → 200
POST
/agent/register
Provision an optional anonymous agent registration
registerAnonymousAgent body → 201413415422429503
GET
/agent/registration
Inspect the caller's anonymous registration claim
getAnonymousAgentRegistration → 200401

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are PaidVerificationBinding (17 properties), ErrorResponse (1 property). Each schema is shown below with its type and property counts.

Sha256Digest
string
ErrorResponse
object
1 property 1 required
RefusedPaidVerificationBinding
PaidVerificationBinding
object
The immutable spend binding. quoted/paymentrequired have no paid receipt or refusal; refused has a refusal reason and no paid receipt; delivered has a paid rec…
17 properties 17 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

kgninja-dev-registration-api-openapi.yml Raw ↑

Other APIs KG-NINJA publishes across the network.

Agent Verification Utility MCP Server
Agent Verification Utility A2A Agent
KG-NINJA A2a API
KG-NINJA Decision Support API
KG-NINJA Discovery API
KG-NINJA Goals API
KG-NINJA MCP API
KG-NINJA Operations API
KG-NINJA Purchase API
Where this information came from

This is an independent, third-party profile of KG-NINJA Registration API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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