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Agentic Resource Discovery (ARD)

ARD Registry API

The discovery interface a conformant Agent Registry exposes. POST /search is the only mandatory endpoint and takes a natural-language `text` query plus optional structured `filter`, returning catalog entries ranked 0-100 by semantic relevance. POST /explore returns facet aggregations over the matched set, GET /agents is deterministic paged browsing. This is the standard's own contract, not an implementation of it — the OpenAPI declares no server, because every registry is its own host, discovered through an application/ai-registry+json entry in a manifest.

Documentation Provider Profile APIs.io OpenAPI GitHub

ARD Registry API is one of 2 APIs that Agentic Resource Discovery (ARD) publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Discovery, Search, and Federation. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 3 operations across 3 paths, and defines 13 schemas. It is described by OpenAPI 3.1.0, at version 0.5.0.

3 operations 3 paths 13 schemas 1 GET2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
0.5.0
Resource Areas
1

Paths & Operations 3

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

Operations 3
POST
/search
Semantic Search Registry
searchAgents body → 200400401429500
POST
/explore
Dynamic Registry Introspection
exploreRegistry body → 200400401429501500
GET
/agents
Browse Catalog Entries
listAgents 4 params → 200400401429500

Schemas 13

The contract defines 13 schemas that model the data the API accepts and returns. The most detailed are RegistryReferral (4 properties), SearchRequest (4 properties), ListResponse (3 properties), SearchResponse (3 properties). Each schema is shown below with its type and property counts.

QueryModel
object
2 properties
SearchQueryModel
SearchRequest
object
4 properties 1 required
ExploreRequest
object
2 properties 1 required
ExploreFacetRequest
object
3 properties 1 required
ExploreResponse
object
2 properties 2 required
ExploreFacetResult
object
2 properties 1 required
ExploreFacetBucket
object
2 properties 2 required
SearchResponse
object
3 properties 1 required
SearchResultItem
object
2 properties 2 required
RegistryReferral
object
4 properties 4 required
ListResponse
object
3 properties 1 required
Error
object
2 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

ard-discovery-openapi.yml Raw ↑

Other APIs Agentic Resource Discovery (ARD) publishes across the network.

AI Catalog Manifest
AE Profile APIs.io
#Discovery#Search#Federation
← Back to A APIs
API Details
ID
agentic-resource-discovery:ard-registry-api
Docs
https://agenticresourcediscovery.org/spec/
Provider
Agentic Resource Discovery (ARD)
APIs.io →  GitHub →
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Where this information came from

This is an independent, third-party profile of ARD Registry 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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