LAPIS
LAPIS (Lightweight API Specification for Intelligent Systems) is a compact, LLM-native API description format authored by Daniel Garcia (cr0hn). It is designed as the format you convert your OpenAPI specifications to when the consumer is a Large Language Model rather than a code generator or human reader. By replacing JSON/YAML structural overhead with a function-signature syntax, indentation-based sections, and centralized definitions for errors, webhooks, rate limits, and workflows, a typical LAPIS document carries the same semantic information as its OpenAPI source while consuming roughly 70-80 percent fewer tokens. LAPIS is not a runtime format and does not replace MCP, function calling, or OpenAPI itself - it is an intermediate representation optimized for AI agents that need to reason about an API inside a constrained context window.
Resources
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LAPIS Specification
The LAPIS specification defines a token-minimal, LLM-native format for describing HTTP APIs. A LAPIS document is organized into up to seven indentation-based sections - [meta], [types], [ops], [webhooks], [errors], [limits], and [flows] -…
Links
Providers working in LAPIS
Providers whose own tags share at least two of this topic's tags, most shared first — the top 30 of 97.
| Provider | About | Rating | APIs |
|---|---|---|---|
| Postman | Postman is the world's leading API platform, used by 35+ million developers to design, build, test, document, mock, monitor, and govern APIs across the entire API lifecycle. The platform spans Collections, Workspaces, the API Client, Spec… | exemplar | 21 |
| AGNTCY | AGNTCY is the open collective for agent interoperability, initiated by Outshift — Cisco's incubation group — and governed under the Linux Foundation (LF Projects, LLC), developed in the open across 52 public repositories. It publishes spec… | developing | 5 |
| ReasonBlocks | ReasonBlocks is a Y Combinator (Spring 2026) startup building a drop-in runtime layer that makes production AI agents observable, self-correcting, and cheaper to run. The platform detects failing agent trajectories (loops and redundant wor… | thin | 2 |
| .cursorrules | .cursorrules is a project-level configuration file used by the Cursor AI code editor to define custom rules, coding conventions, and behavioral instructions that shape how the editor's AI assistant generates and edits code. The file is pla… | 0 | |
| Archbee | Archbee is a documentation and knowledge-portal platform for software teams. It creates, manages and publishes technical documentation, API references and internal wikis, with collaborative editing, revision history, branching and review,… | exemplar | 11 |
| AlphaAI | A REST API and agent-native platform for relevance-scored, ticker-linked financial news, built for trading bots, agent backends, and dashboards. Every article is enriched at ingest with a 1-10 relevance score, one of fourteen categories, v… | exemplar | 1 |
| Cognition Labs | Cognition Labs is the applied AI lab behind Devin, the autonomous AI software engineer that plans, writes, tests, and ships code inside its own shell, code editor, and browser. The Devin API lets teams create and drive Devin sessions progr… | exemplar | 2 |
| FarmDash Agent Hub | FarmDash is a zero-custody intelligence and control layer for DeFi agents and airdrop farmers, combining Trail Heat opportunity scoring, Signal Architect swap routing, wallet and Sybil-risk intelligence, and Hyperliquid futures research ac… | exemplar | 3 |
| Taskfolk | Taskfolk is a project-management and issue-tracking platform built for teams and their AI agents working side by side, operated by UTTER L.L.C-FZ of Dubai, UAE. Workspaces contain projects; projects contain issues moved across board, backl… | strong | 8 |
| WebCrawlerAPI | WebCrawlerAPI is a web crawling and scraping API from 103 Labs (Netherlands) that turns websites into clean, LLM-ready markdown, cleaned text, HTML or link lists for AI agents, support bots and RAG pipelines. It offers asynchronous multi-p… | strong | 3 |
| Routebase | API lifecycle platform covering Design (visual OpenAPI editor), Mock (spec-driven mock servers), Test (suites, assertions, OWASP security scanning), Document (published docs portals), and Agents (MCP server), built around a single living O… | strong | 2 |
| AssetFare | A capped, non-custodial routing API for a single corridor — Solana SOL to Base native ETH — aimed at AI agents. It returns fee-inclusive quotes and bounded unsigned actions; the caller's agent verifies, signs, and submits every transaction… | strong | 4 |
| Netcracker | Netcracker Technology is a Waltham, Massachusetts-based BSS/OSS and digital business software vendor and a wholly owned subsidiary of NEC Corporation. It sells cloud BSS, digital commerce and monetization, convergent charging, service and… | strong | 4 |
| Gumloop | Gumloop is an AI-agent automation platform for building, deploying, and governing agents that automate real work — data analysis, customer support, CRM management, and back-office tasks — across tools like Slack, Microsoft Teams, and Gmail… | strong | 1 |
| H2O.ai | H2O.ai is an open-source artificial-intelligence and machine-learning company whose platform spans H2O-3 (a distributed, in-memory ML engine), H2O Driverless AI (automatic machine learning), H2O MLOps (model deployment, scoring and monitor… | strong | 2 |
| Liblab | liblab generates and publishes type-safe, idiomatic SDKs in TypeScript, Python, Java, .NET, Go, PHP, and Terraform from OpenAPI/Swagger/Postman specs, plus MCP servers that expose those APIs to AI agents. The platform ships a CLI, hosted p… | strong | 13 |
| Adanos Market Sentiment API | Key-authenticated REST/JSON API for financial market sentiment analytics across Reddit, X.com, news, and Polymarket, plus stock news and crypto sentiment. Provides Buzz Score, Trend Detection, and directional Sentiment signals for traders,… | strong | 8 |
| Trisotech | Trisotech is a Montreal, Canada software company, founded in 1996, that builds the Digital Enterprise Suite — a standards-anchored low-code platform for modelling and automating business processes, cases and decisions. Its modelers impleme… | strong | 3 |
| Reachdesk | Reachdesk is a global B2B corporate gifting and direct mail platform that enables sales, marketing, and customer success teams to send physical gifts, branded merchandise, and digital rewards at scale. The Reachdesk REST API allows program… | strong | 2 |
| Arcade.dev | Arcade.dev (formerly Arcade AI) is the MCP runtime for production AI agents — a platform that lets agents safely take real-world actions across SaaS apps with per-user authorization, governed tool execution, and audit logging. The Arcade E… | strong | 9 |
| gpt55-token-gateway | gpt55-token-gateway is the self-chosen service name of an unnamed operator running two OpenAI-compatible AI API gateways on the 558686.xyz domain. GPT55 Model Gateway (gpt55.558686.xyz) sells single GPT-5.6 Luna, GPT-5.5 and GPT-5.3-codex… | strong | 3 |
| Coval | Coval is the deployment-readiness platform for voice and chat AI agents. Teams simulate thousands of realistic conversation scenarios before launch, monitor real production calls, and improve reliability with metrics and human review. Cova… | strong | 20 |
| DreamThreads | DreamThreads exposes the DreamGraph API, a context-first dream interpretation and structured parsing platform. It offers a keyless public dream parser, gated partner interpretation endpoints, a hosted MCP server, and full machine-readable… | strong | 2 |
| Mem0 | Mem0 is a memory infrastructure layer that gives AI agents and applications persistent context across sessions. The platform automatically condenses chat history into compact memories that reduce tokens and latency while preserving the rig… | strong | 1 |
| Observe.AI | Observe.AI is an agentic AI platform for the contact center, providing purpose-built AI agents that handle customer support end-to-end across voice and chat, real-time AI Copilot guidance that assists frontline agents during live interacti… | strong | 2 |
| GSMA | The GSMA (GSM Association) is the London-headquartered global trade body for the mobile industry, representing roughly 750 mobile network operators and around 400 companies in the wider mobile ecosystem, and the organiser of MWC Barcelona.… | strong | 37 |
| Jentic | Jentic is an AI infrastructure company building the agentic knowledge layer for APIs. Founded in late 2024 and backed by $4.5M in pre-seed funding, Jentic enables enterprises to confidently manage, scale, and govern AI agent initiatives in… | developing | 1 |
| Sweep | Sweep is the agentic layer for enterprise systems. By connecting to platforms like Salesforce, Snowflake, ServiceNow, and HubSpot, Sweep reads live metadata and gives AI agents the context they need to understand, plan, and govern changes… | developing | 2 |
| Quadrillion | Quadrillion Labs builds Qualia, an AI coding agent for researchers that runs hundreds of agents in parallel to compress weeks of research into hours. Qualia is a Jupyter-compatible notebook IDE with autonomous mode, a central knowledge gra… | developing | 1 |
| ScrapingAnt | ScrapingAnt is a web-data infrastructure platform operated by DATAANT that puts headless Chrome rendering, a rotating pool of 3M+ residential and datacenter proxies, CAPTCHA avoidance and AI-powered extraction behind a single HTTP API. One… | developing | 3 |