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

LinqAlpha Search API

Search and generate responses

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

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

This API exposes 5 operations across 5 paths, and defines 27 schemas. It is described by OpenAPI 3.0.1, at version 1.0.0.

Requests are made against a single base URL, https://api.linqalpha.com.

5 operations 5 paths 27 schemas 5 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.1
API Version
1.0.0
Base URL
https://api.linqalpha.com
Authentication
API Key
License
MIT
Resource Areas
1

Authentication & Security 1

LinqAlpha Search API declares 1 security scheme for authenticating requests. An API key is passed in the header as X-API-KEY (ApiKeyAuth). By default, every request must be authenticated.

Paths & Operations 5

Across 5 paths, the API surfaces 5 operations — 5 POST. Each is listed below with its method, path, parameters, and response codes.

Search 5

Search and generate responses

POST
/v2/analytics/messages/{chat_message_id}/judge
Analytics V2 Judge (source-grounding)
1 param body → 200400401404422502504
POST
/v1/search
Search
body → 200400401403404500
POST
/v2/chat/sse
Generate a response from the LinqAlpha engine via SSE
body → 200400401500
POST
/v1/analytics/sse
Generate an analytics response via SSE
body → 200400401
POST
/v2/analytics/sse
Generate an analytics response via SSE (V2)
body → 200400401

Schemas 27

The contract defines 27 schemas that model the data the API accepts and returns. The most detailed are ReferenceMetadata (28 properties), AnalyticsV2Request (10 properties), SearchRequest (9 properties), ChatSseV2Request (7 properties). Each schema is shown below with its type and property counts.

ChatSseEvent
object
Base structure for all Chat SSE events
2 properties 2 required
ApiError
object
3 properties 1 required
AnalyticsToolResultBlockEvent
Tool execution result event. Contains the output from a tool call.
DateFilter
object
Date filter with year, month, and optional day
3 properties 2 required
SearchResponse
object
4 properties 1 required
ConversationEvent
Conversation event
AnalyticsMessageEvent
User message echo event. Second event in the stream (after conversation), echoing the user's query.
AnalyticsThinkEvent
Thinking/reasoning process stream. Sent as the model reasons through the problem.
ChatSseV2Request
object
7 properties 1 required
AnalyticsToolUseBlockEvent
Tool invocation event. Indicates a tool is being called during analysis. Multiple tooluseblock events may be sent in parallel batches.
AnalyticsKeepaliveEvent
Heartbeat event sent periodically (every ~15s during idle periods) to keep the connection alive.
AnalyticsStatusEvent
Stream status event indicating start, finish, or keepalive of the analytics stream.
AnalyticsV2Request
object
10 properties 1 required
SubQuestionsEvent
Sub-questions event
CustomMetadata
object
User-defined metadata. This field may contain additional structured data based on the document type and user configuration.
1 property
SearchResultsEvent
Search result id streaming event
DialogueIdEvent
object
Dialogue id streaming event
BaseSseEvent
object
Base structure for SSE events
2 properties 2 required
AnalyticsRequest
object
5 properties 1 required
SearchRequest
object
9 properties 1 required
AnswerEvent
Final answer streaming event
StatusEvent
Stream status event (start/finish)
AnalyticsAnswerEvent
Final answer event. Contains the complete answer in a single event (not streamed incrementally).
AnalyticsSseEvent
object
Base structure for all Analytics SSE events
2 properties 2 required
ReferenceMetadata
object
Additional metadata information
28 properties
ApiErrorResponse
object
Standard error response wrapper
2 properties 2 required
ThinkEvent
Thinking/reasoning process stream

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

linqalpha-search-api-openapi.yml Raw ↑

Other APIs LinqAlpha publishes across the network.

LinqAlpha Briefing API
LinqAlpha Connectors API
LinqAlpha Data API
LinqAlpha Feedback API
LinqAlpha MCP API
LinqAlpha RMS API
LinqAlpha Source Management API
LinqAlpha Status API
LinqAlpha Vault API
Where this information came from

This is an independent, third-party profile of LinqAlpha Search 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.