LangChain Feedback API

The feedback API from LangChain — 7 operation(s) for feedback.

Operations 15

POST /api/v1/feedback/formulas Create Feedback Formula Ep #
GET /api/v1/feedback/formulas List Feedback Formula Ep #
GET /api/v1/feedback/formulas/{feedback_formula_id} Get Feedback Formula Ep #
PUT /api/v1/feedback/formulas/{feedback_formula_id} Update Feedback Formula Ep #
DELETE /api/v1/feedback/formulas/{feedback_formula_id} Delete Feedback Formula Endpoint #
GET /api/v1/feedback/{feedback_id} Read Feedback #
PATCH /api/v1/feedback/{feedback_id} Update Feedback #
DELETE /api/v1/feedback/{feedback_id} Delete Feedback #
GET /api/v1/feedback Read Feedbacks #
POST /api/v1/feedback Create Feedback #
POST /api/v1/feedback/eager Eagerly Create Feedback #
POST /api/v1/feedback/tokens Create Feedback Ingest Token #
GET /api/v1/feedback/tokens List Feedback Ingest Tokens #
GET /api/v1/feedback/tokens/{token} Create Feedback With Token Get #
POST /api/v1/feedback/tokens/{token} Create Feedback With Token Post #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/langchain-feedback-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

langchain-feedback-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: LangSmith Feedback API
  description: 'The LangSmith API is used to programmatically create and manage LangSmith resources.


    ## Host

    https://api.smith.langchain.com


    ## Authentication

    To authenticate with the LangSmith API, set the `X-Api-Key` header

    to a valid LangSmith API key.'
  version: 0.1.0
servers:
- url: /
tags:


# --- truncated at 32 KB (35 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/langchain/refs/heads/main/openapi/langchain-feedback-api-openapi.yml