npm
vercel/ai
The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents
Custom licenseSep 16, 2026 · metrics 2.10.0
All tags
Catalogue tag
#structured-output
Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.
31 records
PyPI
mangiucugna/json_repair
Repair malformed JSON from LLMs, APIs, logs, and user input in Python.
MITAug 28, 2026 · metrics 2.10.0
RubyGems
crmne/ruby_llm
The Ruby AI framework.
MITOct 20, 2026 · metrics 2.10.0
npm
ofri-peretz/eslint
Security and code-quality ESLint plugins — 477 rules across 30 packages: 272 security rules mapped to CWE + OWASP, 107 quality, 98 React/a11y. ESLint 8.40/9/10 + Oxlint. The lint layer AI-generated code needs.
MITSep 13, 2026 · metrics 2.10.0
npm
Dave-London/Pare
Dev tools, optimized for agents. Structured, token-efficient MCP servers for git, test runners, npm, Docker, and more.
MITSep 10, 2026 · metrics 2.10.0
Packagist · PyPI
cognesy/instructor-php
Unified LLM API, structured data outputs with LLMs, and agent SDK - in PHP
MITSep 12, 2026 · metrics 2.10.0
crates.io
Muvon/octolib
One Rust API to 25+ AI providers — chat, vision, tool calls, structured output, embeddings & reranking with built-in cost tracking
Apache-2.0Sep 18, 2026 · metrics 2.10.0
PyPI
jhd3197/Prompture
Prompture is an API-first library for requesting structured JSON output from LLMs (or any structure), validating it against a schema, and running comparative tests between models.
MITSep 25, 2026 · metrics 2.10.0
PyPI
alesanGreat/QZX-Quick-Zap-Exchange
QZX by Alejandro Sánchez: cross-platform commands and structured JSON for AI agents; reference implementation of QZX Result Contract v1 with MCP 2025-06-18 to 2026-07-28 interoperability profiles.
Apache-2.0Oct 9, 2026 · metrics 2.10.0
Go · PyPI
JoakimCarlsson/ai
A Go toolkit for building AI agents and applications across multiple providers. Unified LLM client, agent framework with handoffs, tool calling, streaming, structured output, MCP integration, and cost tracking.
MITSep 5, 2026 · metrics 2.10.0
npm
axl-sdk/axl
TypeScript SDK for orchestrating Agentic Systems — concurrency, structured output, cost control, and consensus as first-class primitives.
Apache-2.0Sep 14, 2026 · metrics 2.10.0
npm
pascalorg/lingo
Make forms easier, LLM tools safer. Natural-language quantities, units, dates & ranges parsed into canonical values — zero dependencies, two-way.
MITSep 14, 2026 · metrics 2.10.0
RubyGems
justi/ruby_llm-contract
Validate and retry LLM outputs for ruby_llm. Describe the JSON response you expect, fall back to a stronger model when the cheaper one fails the rules, and gate CI on regressions — all as one contract object per step.
MITOct 20, 2026 · metrics 2.10.0
npm
bytesbrains/weblocks
Block engine for AI-composable web apps — snap-together 'Lego' blocks + the AI catalog contract (manifest → validate → render static HTML).
MITSep 17, 2026 · metrics 2.10.0
Go
maxrodrigo/clai
AI for the Command Line
MITSep 8, 2026 · metrics 2.10.0
PyPI
antonyrag/ragleap-core
Production-ready AI Business OS — 46 autonomous AI Employees, Graph RAG (Neo4j), multi-channel, BYOK across 17 LLM providers plus custom/local endpoints (Ollama), automatic fallback. 8 libs (Python+Java). Self-hosted, MIT licensed, guardrailed autonomy for regulated industries.
MITSep 13, 2026 · metrics 2.10.0
Go · PyPI
masterkeysrd/loom
Loom is a high-performance, graph-based AI workflow engine for Go. It allows you to build complex agentic systems by defining multi-step workflows as directed graphs, seamlessly connecting them to any large language model, and persisting execution state for long-running or interrupted tasks.
No licenseSep 14, 2026 · metrics 2.10.0
npm
bitbaum/ai-forms
Headless AI form filling and conversational refinement — shared across the fleet
MITSep 19, 2026 · metrics 2.10.0
Go
psyb0t/elelem
A Go engine for talking to LLMs that doesn't give a shit which one. Streaming, tool loops, history that actually fits the context window, retries that don't repeat themselves, and typed structured output. Swap OpenAI for Anthropic by changing one line. Library, not a framework: you own the loop.
MITOct 19, 2026 · metrics 2.10.0
NuGet
shinyorg/controls
Controls for .NET MAUI & Blazor
MITSep 18, 2026 · metrics 2.10.0
npm · Go
howlerops/recursive-llm-ts
No repository description published.
MITSep 19, 2026 · metrics 2.10.0
Go · npm
manishiitg/mcpagent
Go agent runtime for tool-using, code-executing, multi-provider agents with MCP support, coding-agent CLI integrations, structured output, summarization, and parallel tool execution.
No licenseSep 9, 2026 · metrics 2.10.0
crates.io
Inferact/xgrammar-structural-tag
Rust builders for xgrammar structural_tag tool-calling constraints
Apache-2.0Sep 12, 2026 · metrics 2.10.0
npm
mpointer/llm-governance-gateway
The governance layer LLM proxies promised as a TypeScript library you can read. Every call runs through one governed pipeline: rate limit → spend caps (per-user + global circuit breaker) → cache → schema-validated provider failover → usage log → LLM-judge No sidecar proxy to deploy.
MITAug 25, 2026 · metrics 2.10.0
PyPI
Boundless-Studios/agentrunner
Host-agnostic LLM agent execution on the OpenAI Agents SDK: model fallback, streaming, structured-output extraction, self-correction, and tracing — behind a small injected provider seam.
MITSep 15, 2026 · metrics 2.10.0
PyPI
nerigleston/jangada
No repository description published.
MITJul 19, 2026 · metrics 2.10.0
npm
howells/motif
No repository description published.
MITSep 9, 2026 · metrics 2.10.0
npm · PyPI
Eth-Interchained/sentinel-blocks
Robust extraction of structured payloads from LLM output via sentinel blocks (<<<TAG>>> … <<<END>>>). Survives quotes, newlines & braces that break JSON.parse. 10 language ports, one spec.
GPL-3.0Sep 11, 2026 · metrics 2.10.0
npm
cch137/cardan
No repository description published.
MITSep 15, 2026 · metrics 2.10.0
Go
ronhuafeng/llmcaller-codex-go
Archived: use github.com/ronhuafeng/llm-go/llmcaller/codex; legacy v0.4.2 is immutable
MITSep 5, 2026 · metrics 2.10.0