How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

B3 X402 Endpoints API

The X402 Endpoints API from B3 — 9 operation(s) for x402 endpoints.

B3 X402 Endpoints API is one of 39 APIs that B3 publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include X402 Endpoints. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 10 operations across 9 paths, and defines 34 schemas. It is described by OpenAPI 3.1.0, at version 1.0.

Requests are made against the base URL https://api.b3os.org/v1.

10 operations 9 paths 34 schemas 3 GET7 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
1.0
Base URL
https://api.b3os.org/v1
Resource Areas
1

Paths & Operations 10

Across 9 paths, the API surfaces 10 operations — 3 GET, 7 POST. Each is listed below with its method, path, parameters, and response codes.

X402 Endpoints 10
GET
/v1/x402-endpoints
List all public x402 endpoints
4 params body → 200400
POST
/v1/x402-endpoints
Create (import) a new x402 endpoint after successful test
body → 200400
GET
/v1/x402-endpoints/by-url
Check if an x402 endpoint exists by URL
1 param body → 200400
POST
/v1/x402-endpoints/execute
Execute an x402 call with a pre-signed payment header (proxy mode)
body → 200400401
POST
/v1/x402-endpoints/generate-metadata
Generate AI metadata (name, description, category, tags) for an x402 endpoint
body → 200400
POST
/v1/x402-endpoints/import
Import an x402 endpoint atomically (probe + pay + generate metadata + create)
body → 200400401409
POST
/v1/x402-endpoints/probe
Probe an x402 endpoint to get its payment requirements
body → 200400
POST
/v1/x402-endpoints/test
Test an x402 endpoint using the organization's default Turnkey wallet
body → 200400401
GET
/v1/x402-endpoints/{id}
Get an x402 endpoint by ID
1 param body → 200404
POST
/v1/x402-endpoints/{id}/verify
Re-verify an x402 endpoint and update its schemas
1 param body → 200400404

Schemas 34

The contract defines 34 schemas that model the data the API accepts and returns. The most detailed are github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402Endpoint (39 properties), CreateX402EndpointParams (24 properties), github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402EndpointProbeResult (19 properties), github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402PaymentOption (14 properties). Each schema is shown below with its type and property counts.

ExecuteX402EndpointParams
object
4 properties 2 required
GenerateX402MetadataSuccessResponse
object
4 properties
CheckX402EndpointSuccessResponse
object
4 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.ParamDefinition
object
12 properties
GenerateX402MetadataData
object
4 properties
PaginatedData-github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity_X402Endpoint
object
4 properties
TestX402EndpointParams
object
3 properties 1 required
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402Endpoint
object
39 properties
CheckX402EndpointData
object
2 properties
GenerateX402MetadataParams
object
9 properties 1 required
ImportX402EndpointParams
object
6 properties 1 required
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_app_api_http.ErrorResponse
object
4 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402OutputSchema
object
OutputSchema for discovery registration (matches TypeScript SDK format)
4 properties
TestX402EndpointSuccessResponse
object
4 properties
ProbeX402EndpointSuccessResponse
object
4 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402EndpointSource
string
ImportX402EndpointData
object
2 properties
VerifyX402EndpointSuccessResponse
object
4 properties
GetX402EndpointSuccessResponse
object
4 properties
TestX402EndpointData
object
Reuse same response structure
5 properties
VerifyX402EndpointParams
object
7 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402EndpointProbeResult
object
19 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402PaymentOption
object
14 properties
CreateX402EndpointParams
object
24 properties 5 required
ExecuteX402EndpointSuccessResponse
object
4 properties
TestX402PaymentDetails
object
5 properties
ListX402EndpointsSuccessResponse
object
4 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402DiscoveryMetadata
object
7 properties
CreateX402EndpointSuccessResponse
object
4 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402OutputSchemaInput
object
9 properties
ImportX402EndpointSuccessResponse
object
4 properties
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402PaymentExtra
object
6 properties
ProbeX402EndpointParams
object
3 properties 1 required
github_com_b3-fun_b3-mono_services_b3os-workflow_internal_pkg_entity.X402DiscoverySchema
object
2 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

b3-x402-endpoints-api-openapi.yml Raw ↑

Other APIs B3 publishes across the network.

B3 Action API
B3 Actions API
B3 Admin API
B3 Ai API
B3 Api Keys API
B3 Connector Types API
B3 Connectors API
B3 Contract API
B3 Contracts API
B3 CU API
B3 faucet API
B3 Integrations API
Where this information came from

This is an independent, third-party profile of B3 X402 Endpoints 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.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.