@pathcourse/ai

@pathcourse/ai

PathCourse Health provider for the Vercel AI SDK. Drop autonomous agent inference into any Next.js app with a one-line provider swap — no accounts, no credit cards, no KYC.

Install

npm install @pathcourse/ai

Quick Start (Next.js streaming chat route)

// app/api/chat/route.ts
import { streamText } from "ai";
import { pathcourse } from "@pathcourse/ai";

export async function POST(req: Request) {
  const { messages } = await req.json();

  const result = await streamText({
    model: pathcourse("pch-fast"),
    messages,
  });

  return result.toDataStreamResponse();
}

Set PCH_API_KEY in .env.local. That is the only change.

Drop-in for @ai-sdk/openai

// Before
import { openai } from "@ai-sdk/openai";
const result = await generateText({ model: openai("gpt-4o-mini"), prompt });

// After
import { pathcourse } from "@pathcourse/ai";
const result = await generateText({ model: pathcourse("pch-fast"), prompt });

Every Vercel AI SDK feature works unchanged — generateText, streamText, generateObject, tool calls, structured output, multi-turn streaming with useChat.

Explicit construction

import { createPathCourse } from "@pathcourse/ai";
import { generateText } from "ai";

const pathcourse = createPathCourse({ apiKey: process.env.PCH_API_KEY });

const { text } = await generateText({
  model: pathcourse("pch-pro"),
  prompt: "Plan a multi-step research workflow.",
});

Embeddings

import { pathcourseEmbedding } from "@pathcourse/ai";
import { embed } from "ai";

const { embedding } = await embed({
  model: pathcourseEmbedding(),
  value: "What is Path Score?",
});

Models

Model	Rate	Min tier	Notes
pch-fast	$0.44 / M tokens	uncertified	Fast reasoning, classification, routing
pch-coder	$3.50 / M tokens	uncertified	Code generation, debugging
pch-embed	$0.015 / M tokens	uncertified	Text embeddings for semantic search / RAG
pch-translate	$0.08 / M chars	uncertified	Multilingual translation
pch-pro	$1.96 / M tokens	bronze	Deep reasoning, multi-step planning
pch-audio	$1.85 / M chars	bronze	Text-to-speech, standard quality
pch-documents	$0.26 in / $1.48 out per M tokens	bronze	Document parsing / OCR
pch-transcribe	$0.0008 / minute	bronze	Speech-to-text
pch-extract	$0.012 / M tokens	bronze	Structured data extraction
pch-rerank	$0.025 / M tokens	bronze	Reranking for RAG pipelines
pch-image	$0.028 / image	silver	Text-to-image
pch-audio-premium	$37.00 / M chars	silver	Text-to-speech, premium quality
pch-talk	$0.001 / minute	silver	Voice conversation
claude-haiku	Common rate	silver	Anthropic Claude Haiku
claude-sonnet	Common rate	gold	Anthropic Claude Sonnet

The full list above shows what's reachable through the gateway. pathcourse(model) works for any chat-completion model; for image/audio/transcription, use the PCH JS SDK directly.

Choosing a chat model:

• Fast response, simple task → pch-fast
• Complex reasoning, multi-step → pch-pro
• Writing or reviewing code → pch-coder
• Long context or premium reasoning → claude-sonnet (Gold tier)

Authentication

Set PCH_API_KEY in your environment, or pass apiKey to createPathCourse.

# .env.local
PCH_API_KEY=pch_prod_b_...

Developer access — $5 USDC. Send $5+ USDC on Base (chain ID 8453) to the PCH treasury wallet, then call claimKey({ txHash, wallet }) to retrieve your key. No accounts, no credit card, no KYC. $5 buys thousands of pch-fast calls — enough to verify any Next.js or Vercel AI SDK integration. Top up to $25 lifetime and your account auto-upgrades to Uncertified with pch-coder access. Treasury address: see payment.treasury_wallet in /.well-known/agent.json.

Links

• Platform: pathcoursehealth.com
• Vercel AI SDK: sdk.vercel.ai
• npm SDK: npmjs.com/package/@pathcourse/sdk
• Integration examples: github.com/pathcourse-health/pch-integration-examples

License

MIT