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LangSmith threads API

The threads API from LangSmith — 2 operation(s) for threads.

LangSmith threads API is one of 73 APIs that LangSmith publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

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

This API exposes 2 operations across 2 paths, and defines 12 schemas. It is described by OpenAPI 3.1.0, at version 0.1.0.

Requests are made against a single base URL, /.

2 operations 2 paths 12 schemas 1 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
0.1.0
Base URL
https://api.smith.langchain.com
Authentication
API Key, API Key, HTTP Bearer, API Key
Resource Areas
1

Authentication & Security 4

LangSmith threads API declares 4 security schemes for authenticating requests. An API key is passed in the header as X-API-Key (API Key). An API key is passed in the header as X-Tenant-Id (Tenant ID). It accepts HTTP bearer tokens (Bearer Auth). An API key is passed in the header as X-Organization-Id (Organization ID).

  • Bearer Auth — Bearer tokens are used to authenticate from the UI. Must also specify x-tenant-id or x-organization-id (for org scoped apis).

Paths & Operations 2

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

threads 2
POST
/v2/threads/query
Query Threads
body → 200400401403404422500503
GET
/v2/threads/{thread_id}/traces
Query Thread Traces
6 params → 200400401403404422500503

Schemas 12

The contract defines 12 schemas that model the data the API accepts and returns. The most detailed are threads.ThreadTraceListItem (21 properties), threads.ThreadListItem (18 properties), query.RunFeedbackStat (10 properties), threads.QueryThreadsRequestBody (6 properties). Each schema is shown below with its type and property counts.

query.RunFeedbackStats
object
threads.ThreadListItem
object
18 properties
query.RunFeedbackStat
object
10 properties
query.RunCompletionTokenDetails
object
1 property
threads.ThreadTraceListItem
object
21 properties
shared.ProblemDetails
object
RFC 7807 problem details returned on V2 API errors.
6 properties
threads.QueryThreadsRequestBody
object
6 properties
query.RunPromptCostDetails
object
1 property
threads.QueryThreadsResponseBody
object
3 properties
threads.QueryThreadTracesResponseBody
object
3 properties
query.RunPromptTokenDetails
object
1 property
query.RunCompletionCostDetails
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

langsmith-threads-api-openapi.yml Raw ↑

Other APIs LangSmith publishes across the network.

LangSmith access_policies API
LangSmith ace API
LangSmith agents API
LangSmith alert_rules API
LangSmith annotation-queues API
LangSmith api-key API
LangSmith audit-logs API
LangSmith auth API
LangSmith aws_marketplace API
LangSmith backfills API
LangSmith beacon API
LangSmith bulk-exports API
Where this information came from

This is an independent, third-party profile of LangSmith threads 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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