Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/growthxai/output/output-dev-http-client-createnpx skills add growthxai/output --skill output-dev-http-client-creategit clone --depth 1 https://github.com/growthxai/outputWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00037 | $0.03263 |
| Opus 5 | $0.00018 | $0.01631 |
| Sonnet 5 | $0.00007 | $0.00653 |
| Haiku 4.5 | $0.00004 | $0.00326 |
Grade A, and why
output-dev-http-client-create scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 514 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Creating HTTP Clients
Overview
This skill documents how to create shared HTTP clients for Output SDK workflows. Clients are stored in src/shared/clients/ and shared across all workflows to ensure consistent error handling, retry logic, and API integration patterns.
When to Use This Skill
- Integrating a new external API service
- Creating a reusable HTTP wrapper for a service
- Standardizing error handling for API calls
- Moving inline HTTP logic to a shared client
Location Convention
HTTP clients are stored in the shared clients folder:
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
Important: Clients are shared across ALL workflows. Do NOT create per-workflow HTTP clients.
Other Shared Code Locations
src/shared/
├── clients/ # API clients (this skill)
├── utils/ # Utility functions & helpers
├── services/ # Business logic services
├── steps/ # Shared step definitions (optional)
└── evaluators/ # Shared evaluators (optional)
Import Pattern in Workflows
Use relative imports from workflow files to shared clients:
// 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';
Critical Import Rules
HTTP Client Import
// CORRECT - Use @outputai/http wrapper
import { createKyClient } from '@outputai/http';
// WRONG - Never use axios directly
import axios from 'axios';
Error Types Import
// CORRECT - Import error types from @outputai/core
import { FatalError, ValidationError } from '@outputai/core';
// WRONG - Custom error classes
class MyCustomError extends Error { ... }
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 514 lines · 37 tokens per session scan A 6c72cb446cb3
output-dev-http-client-create is a skill published in the GitHub repository growthxai/output (434 stars, last pushed 5d ago), licensed Apache-2.0. It adds 37 tokens to every session and 3,263 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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