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

LangSmith agents API

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

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

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

This API exposes 4 operations across 2 paths, and defines 11 schemas. It is described by OpenAPI 3.1.0, at version 0.1.0.

Requests are made against a single base URL, /.

4 operations 2 paths 11 schemas 2 GET1 PATCH1 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 agents 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 4

Across 2 paths, the API surfaces 4 operations — 2 GET, 1 PATCH, 1 POST. Each is listed below with its method, path, parameters, and response codes.

agents 4
GET
/v1/fleet/agents
List agents
→ 200401403500
POST
/v1/fleet/agents
Create an agent
1 param body → 201400403422500
GET
/v1/fleet/agents/{agentID}
Get an agent
1 param → 200401403404500
PATCH
/v1/fleet/agents/{agentID}
Update an agent
2 params body → 200400403404422500

Schemas 11

The contract defines 11 schemas that model the data the API accepts and returns. The most detailed are agents.CreateAgentResponse (11 properties), agents.UpdateAgentResponse (11 properties), agents.AgentMetadata (9 properties), agents.AgentConfigurable (7 properties). Each schema is shown below with its type and property counts.

agents.AgentConfigurable
object
7 properties
agents.FileEntry
object
1 property
agents.AgentMetadata
object
9 properties
agents.CreateAgentRequest
object
6 properties
agents.UpdateAgentResponse
object
11 properties
agents.Agent
object
3 properties
agents.ListAgentsResponse
object
1 property
agents.UpdateAgentRequest
object
6 properties
agents.ErrorResponse
object
4 properties
agents.CreateAgentResponse
object
11 properties
agents.AgentConfig
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

langsmith-agents-api-openapi.yml Raw ↑

Other APIs LangSmith publishes across the network.

LangSmith access_policies API
LangSmith ace 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
LangSmith charts API
Where this information came from

This is an independent, third-party profile of LangSmith agents 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.