Output Dev HTTP Client Create

src/shared/clients/
├── gemini_client.ts     # Google Gemini API client
├── jina_client.ts       # Jina AI client
├── perplexity_client.ts # Perplexity API client
└── {service}_client.ts  # Your new client

src/shared/
├── clients/     # API clients (this skill)
├── utils/       # Utility functions & helpers
├── services/    # Business logic services
├── steps/       # Shared step definitions (optional)
└── evaluators/  # Shared evaluators (optional)

// CORRECT - Relative path from workflow steps.ts
import { GeminiImageService } from '../../shared/clients/gemini_client.js';
import { parseResumeWithJina } from '../../shared/clients/jina_client.js';

// From shared steps (if used)
import { JinaClient } from '../clients/jina_client.js';

// CORRECT - Use @outputai/http wrapper
import { createKyClient } from '@outputai/http';

// WRONG - Never use axios directly
import axios from 'axios';

// CORRECT - Import error types from @outputai/core
import { FatalError, ValidationError } from '@outputai/core';

// WRONG - Custom error classes
class MyCustomError extends Error { ... }

// CORRECT - Use @outputai/core/credentials for secrets
import { credentials } from '@outputai/core/credentials';
const apiKey = credentials.require('service.api_key');

// WRONG - Never use process.env for secrets
const apiKey = process.env.SERVICE_API_KEY;

// CORRECT - Attach spend to paid API calls with @outputai/http
import { addRequestCost, createKyClient } from '@outputai/http';

// WRONG - Tracking cost yourself in a side table, or skipping it for paid APIs

import { FatalError, ValidationError } from '@outputai/core';
import { createKyClient } from '@outputai/http';
import { credentials } from '@outputai/core/credentials';

const API_KEY = credentials.require('service.api_key');
const BASE_URL = 'https://api.service.com';

const client = createKyClient({
  prefix: BASE_URL,
  headers: {
    Authorization: `Bearer ${API_KEY}`,
    Accept: 'application/json'
  },
  timeout: 30000,
  retry: {
    limit: 3,
    statusCodes: [408, 429, 500, 502, 503, 504]
  }
});

/**
 * Fetch data from the service
 *
 * @param query - Search query string
 * @returns Processed response data
 * @throws {FatalError} If authentication fails or resource not found
 * @throws {ValidationError} If temporary error occurs
 */
export async function fetchServiceData(query: string): Promise<ServiceResponse> {
  const response = await client.get('endpoint', {
    searchParams: { q: query }
  });

  const data = await response.json();

  if (!data.results) {
    throw new FatalError('No results returned from service');
  }

  return data;
}

import { FatalError, ValidationError } from '@outputai/core';
import { createKyClient } from '@outputai/http';
import { credentials } from '@outputai/core/credentials';

export interface ServiceOptions {
  model?: string;
  timeout?: number;
}

export class ServiceClient {
  private readonly client: ReturnType<typeof createKyClient>;
  private readonly model: string;

  constructor(apiKey?: string) {
    const key = apiKey ?? credentials.require('service.api_key');

    this.client = createKyClient({
      prefix: 'https://api.service.com',
      headers: {
        Authorization: `Bearer ${key}`,
        'Content-Type': 'application/json'
      },
      timeout: 30000,
      retry: {
        limit: 3,
        statusCodes: [408, 429, 500, 502, 503, 504]
      }
    });

    this.model = 'default-model';
  }

  async process(input: ProcessInput): Promise<ProcessOutput> {
    try {
      const response = await this.client.post('process', {
        json: {
          model: this.model,
          input
        }
      });

      return await response.json();
    } catch (error: unknown) {
      const err = error as { status?: number; message?: string };

      if (err.status === 429) {
        throw new ValidationError(`Rate limit exceeded: ${err.message}`);
      }

      if (err.status === 401 || err.status === 403) {
        throw new FatalError(`Authentication failed: ${err.message}`);
      }

      throw new ValidationError(`Service call failed: ${err.message}`);
    }
  }
}

import { FatalError } from '@outputai/core';
import { createKyClient } from '@outputai/http';
import { credentials } from '@outputai/core/credentials';

const JINA_API_KEY = credentials.require('jina.api_key');
const JINA_BASE_URL = 'https://r.jina.ai';

const client = createKyClient({
  prefix: JINA_BASE_URL,
  headers: {
    Authorization: `Bearer ${JINA_API_KEY}`,
    Accept: 'application/json'
  },
  timeout: 30000,
  retry: {
    limit: 3,
    statusCodes: [408, 413, 429, 500, 502, 503, 504]
  }
});

/**
 * Parse PDF resume using Jina Reader API
 */
export async function parseResumeWithJina(base64Pdf: string): Promise<string> {
  const response = await client.post('', {
    json: { pdf: base64Pdf },
    headers: {
      'Content-Type': 'application/json'
    }
  });

  const data: {
    data: {
      content: string;
      title?: string;
    };
  } = await response.json();

  if (!data.data?.content) {
    throw new FatalError('No content returned from Jina PDF parser');
  }

  return data.data.content;
}

/**
 * Scrape text content from URL using Jina Reader
 */
export async function scrapeTextWithJina(url: string): Promise<string> {
  const response = await client.get(url, {
    headers: {
      'X-Return-Format': 'text',
      'X-No-Cache': 'true',
      'X-Timeout': '30'
    }
  });

  const data: {
    data: {
      text?: string;
      content?: string;
    };
  } = await response.json();

  const textContent = data.data?.text || data.data?.content;

  if (!textContent) {
    throw new FatalError(`No text content returned from URL: ${url}`);
  }

  return textContent;
}

import { GoogleGenerativeAI } from '@google/generative-ai';
import { FatalError, ValidationError } from '@outputai/core';
import { credentials } from '@outputai/core/credentials';

export interface GeminiImageGenerationOptions {
  prompt: string;
  referenceImages?: Array<{
    inlineData: {
      mimeType: string;
      data: string;
    };
  }>;
  aspectRatio?: string;
  resolution?: string;
  numberOfImages?: number;
}

export class GeminiImageService {
  private readonly client: GoogleGenerativeAI;
  // current as of 2026-05-04 — run output-dev-model-selection for the latest
  private readonly model: string = 'gemini-3-pro-image';

  constructor(apiKey = credentials.require('google.api_key')) {
    if (!apiKey) {
      throw new FatalError(
        'GeminiImageService: No API Key provided (google.api_key credential).'
      );
    }
    this.client = new GoogleGenerativeAI(apiKey);
  }

  async generateImage(options: GeminiImageGenerationOptions): Promise<string[]> {
    const { prompt, referenceImages = [], aspectRatio = '1:1', resolution = '1K', numberOfImages = 1 } = options;

    try {
      const model = this.client.getGenerativeModel({ model: this.model });

      const parts: Array<{ text: string } | { inlineData: { mimeType: string; data: string } }> = [];

      if (referenceImages.length > 0) {
        referenceImages.forEach(img => parts.push(img));
      }

      const finalPrompt = `${prompt}\n\nGenerate this as a ${aspectRatio} aspect ratio image at ${resolution} resolution.`;
      parts.push({ text: finalPrompt });

      const result = await model.generateContent({
        contents: [{ role: 'user', parts }],
        generationConfig: {
          temperature: 1.0,
          topP: 0.95,
          candidateCount: numberOfImages,
          maxOutputTokens: 8192
        }
      });

      const images: string[] = [];
      const candidates = result.response.candidates || [];

      for (const candidate of candidates) {
        if (candidate.content?.parts) {
          for (const part of candidate.content.parts) {
            if (part.inlineData?.data) {
              images.push(part.inlineData.data);
            }
          }
        }
      }

      if (images.length === 0) {
        throw new ValidationError('No images were generated by Gemini');
      }

      return images;
    } catch (error: unknown) {
      const err = error as { status?: number; message?: string };

      if (err.status === 429) {
        throw new ValidationError(`Gemini rate limit exceeded: ${err.message}`);
      }

      if (err.status === 401 || err.status === 403) {
        throw new FatalError(`Gemini authentication failed: ${err.message}`);
      }

      throw new ValidationError(`Gemini image generation failed: ${err.message}`);
    }
  }
}

const RETRY_STATUS_CODES = [408, 429, 500, 502, 503, 504];
const FATAL_STATUS_CODES = [401, 403, 404];

const client = createKyClient({
  retry: {
    limit: 3,
    statusCodes: RETRY_STATUS_CODES
  },
  hooks: {
    beforeError: [
      ( { error } ) => {
        const status = error.response?.status;
        const message = error.message;

        if (status && FATAL_STATUS_CODES.includes(status)) {
          throw new FatalError(`HTTP ${status} error: ${message}`);
        }

        throw new ValidationError(`HTTP request failed: ${message}`);
      }
    ]
  }
});

import { addRequestCost, createKyClient } from '@outputai/http';
import { credentials } from '@outputai/core/credentials';

const API_KEY = credentials.require('service.api_key');

const client = createKyClient({
  prefix: 'https://api.service.com',
  headers: { Authorization: `Bearer ${API_KEY}` },
  timeout: 30000,
  retry: { limit: 3, statusCodes: [408, 429, 500, 502, 503, 504] },
  hooks: {
    afterResponse: [
      async (_request, _options, response) => {
        // Errored responses (4xx/5xx) and retried attempts aren't billed the
        // same as a successful call — skip them rather than over-counting.
        if (!response.ok) {
          return;
        }

        try {
          const body = await response.clone().json() as { creditsUsed?: number; cached?: boolean };

          // Skip cached or free responses that legitimately cost nothing.
          if (body.cached || !body.creditsUsed) {
            return;
          }

          const usdPerCredit = 0.01;
          addRequestCost(response, body.creditsUsed * usdPerCredit);
        } catch {
          // Never let cost tracking break the request.
        }
      }
    ]
  }
});

import { addRequestCost, createKyClient } from '@outputai/http';
import { credentials } from '@outputai/core/credentials';

const API_KEY = credentials.require('service.api_key');

// Notional per-call cost for a flat-rate subscription. Not a secret, so a
// plain env var is fine here — unlike API keys, which must go through
// @outputai/core/credentials.
const NOTIONAL_COST_USD = Number(process.env.SERVICE_NOTIONAL_COST_USD ?? 0.005);

const client = createKyClient({
  prefix: 'https://api.service.com',
  headers: { Authorization: `Bearer ${API_KEY}` },
  timeout: 30000,
  retry: { limit: 3, statusCodes: [408, 429, 500, 502, 503, 504] },
  hooks: {
    afterResponse: [
      (_request, _options, response) => {
        // Errored responses (4xx/5xx) and retried attempts aren't billed the
        // same as a successful call — skip them rather than over-counting.
        if (!response.ok) {
          return;
        }

        addRequestCost(response, NOTIONAL_COST_USD);
      }
    ]
  }
});