First-party app
Jina AI

Jina AI

Generate embeddings, rerank and classify text with Jina AI's Search Foundation API.

stable AI & Machine LearningDeveloper Tools

About

Jina AI ships in the w6w first-party pack. It declares 15 actions, 2 health checks, and the host runs its code in a sandbox that never sees the credential.

App id
io.w6w.jinaai
Version
0.1.0
Author
w6w
Licence
MIT
Categories
AI & Machine Learning · Developer Tools

Overview

Jina AI’s Search Foundation API is the embedding/reranking/classification backbone behind a lot of retrieval-augmented and search-driven LLM applications: dense text and multimodal embeddings (jina-embeddings-v3/v4/v5, CLIP, ColBERT multi-vector, code-specialized models), a cross-encoder reranker for refining search results, zero-shot and few-shot text/image classification against trainable classifiers, an experimental vision-language chat completion endpoint, and an asynchronous batch embeddings pipeline for bulk JSONL jobs too large for a single request.

This app covers the full api.jina.ai Search Foundation surface documented in Jina’s own OpenAPI 3.1 specification — embeddings, reranking, classification, classifier training/management, model discovery, batch embedding jobs, and the (vendor-labelled experimental) chat completions endpoint. It deliberately does NOT cover Jina’s separate Reader (r.jina.ai), Search (s.jina.ai) or DeepSearch products, which are different hosts with their own, undocumented-here, API shapes.

Health checks track Jina’s own Statuspage (scoped to the Embedding Models and Reranker Models components this app actually calls) plus a lightweight, no-token-cost credential probe.

Build with Jina AI

Three routes to the same 15 actions. The Workflow tab is generated from Jina AI's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.

Cancel Batch Job

batch-cancel

Cancel a pending or in-progress batch embedding job.

Create Batch Embedding Job

batch-embeddings-create

Start an asynchronous bulk embedding job from inline JSONL or a JSONL file URL.

Download Batch Errors

batch-errors-get

Download the error JSONL file for a completed batch embedding job.

Get Batch Job Status

batch-get

Fetch the status of a batch embedding job.

Download Batch Output

batch-output-get

Download the output JSONL file for a completed batch embedding job.

List Batch Jobs

batches-list

List recent batch embedding jobs for the authenticated account.

Chat Completions (Experimental)

chat-completions

Vendor-labelled experimental: no availability/stability guarantee. OpenAI-compatible chat completion with jina-vlm.

Delete Classifier

classifier-delete

Permanently delete a trained classifier.

Train Classifier

classifier-train

Create a few-shot classifier from labeled examples, or add more to an existing one.

List Classifiers

classifiers-list

List all classifiers owned by the authenticated account.

Classify

classify

Zero-shot classify text/images against ad-hoc labels, or run a trained classifier.

Create Embeddings

embeddings-create

Generate dense, multi-vector or sparse embeddings for text, images or PDFs.

Get Model

model-get

Fetch details for one model by its ID (e.g. jina-ai/jina-embeddings-v3).

List Models

models-list

List every model available on the Search Foundation API, with pricing and modalities.

Rerank Documents

rerank

Re-score and re-order documents by relevance to a query.

A workflow step names the app and the action, and the editor fills in the connection when you pick one. This is the Step shape from the workflow spec, carrying Jina AI's real ids.

{
  "manifestVersion": "2",
  "name": "jinaai-example",
  "steps": [
    {
      "id": "batch-embeddings-create",
      "uses": {
        "app": "io.w6w.jinaai",
        "action": "batch-embeddings-create",
        "connection": "conn_YOUR_CONNECTION_ID"
      },
      "with": {
        "model": "<model>"
      }
    }
  ]
}

Here are some of the things you can do

  • Create Batch Embedding Job

    perform
    batch-embeddings-create
  • Download Batch Errors

    read
    batch-errors-get
  • Get Batch Job Status

    read
    batch-get
  • Download Batch Output

    read
    batch-output-get
  • List Batch Jobs

    read
    batches-list

+10 more actions available

Every app-specific value here is a blank you have to fill in. An app action is reached through the connection that authenticates it, so the address is a connection id, not the app id — and connections belong to your account, so a public page cannot know yours. Create one for Jina AI, then fill in the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the parameters that action declares. The call itself is real — the shape is transcribed from the studio's own snippet builder, which prints the same kind of blanks — but nothing in it is specific to Jina AI. The Workflow tab is where this app's real ids are.

Install
npm install @w6w/sdk
yarn add @w6w/sdk
pnpm add @w6w/sdk
deno add npm:@w6w/sdk
Code
import { W6wClient, isActionRun } from "@w6w/sdk";

// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();

const envelope = await client.run({
  urn: "conn_YOUR_CONNECTION_ID",
  action: "batch-embeddings-create",
  payload: {
    model: "<value>",
    // inputUrl: "<value>",
    // input: "<value>",
    // task: "<value>",
    // dimensions: "<value>",
    // normalized: "<value>",
    // webhookUrl: "<value>",
  },
});

if (isActionRun(envelope)) console.log(envelope.value);
Install the CLI
npm install -g @w6w/cli
CLI
w6w run conn_YOUR_CONNECTION_ID --action batch-embeddings-create --payload '{"model":"<value>"}'

Give an AI agent Jina AI — without giving it Jina AI's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.

One tool call
{
  "name": "w6w_invoke",
  "arguments": {
    "ref": "app:io.w6w.jinaai#batch-embeddings-create",
    "input": {
      "model": "<model>"
    }
  }
}

Every tool names its target with a single ref. The app: form above doesn't name a connection at all — the host resolves which of the caller's Jina AI connections to sign with, and refuses rather than guesses when the answer is ambiguous.

What the agent gets

Credentials it can't read

The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.

A tool surface scoped to the caller

Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.

A durable workflow in one call

Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.

Health-aware discovery

Jina AI's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.

The MCP surface is part of the hosted platform. Jina AI itself is MIT, and the runtime that executes it is source-available (FSL).

Request MCP access

Health checks

Jina AI declares its own checks, so its health is a property of the app rather than something the host guesses at.

service

Jina AI platform status

Component status from status.jina.ai, scoped to the Embedding Models and Reranker Models groups plus jina-vlm — the products this app's actions actually cover.

quota

Rate-limit headroom

Remaining requests/tokens this minute, read from X-RateLimit-Remaining-* response headers when Jina AI sends them.