# TLA Plus Foundation

**Canonical:** https://apis.io/providers/tla-plus-foundation/  
**Website:** https://foundation.tlapl.us/  
**APIs profiled:** 6

The TLA+ Foundation is an independent nonprofit hosted by the Linux Foundation, dedicated to fostering the adoption of the TLA+ specification language in industry, academia, and education. Created by Leslie Lamport, TLA+ is a high-level formal specification language based on set theory and temporal logic for modeling concurrent and distributed systems. Inaugural members include Amazon Web Services (AWS) and Oracle. The Foundation funds research and development, maintains the TLC model checker, TLAPS proof system, and TLA+ Toolbox IDE, and coordinates community resources including the VS Code extension, CommunityModules, and formal verification examples. The current stable release is v1.7.4 (The Xenophanes release).

## Kin Score — 13.9 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 13.9).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 2.5 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (6)

- **TLC Model Checker** — TLC is the primary model checker for specifications written in TLA+. It can be run from the command line using tla2tools.jar or consumed as a Java dependency via Maven from cent...
- **TLAPS Proof System** — The TLA+ Proof Manager (TLAPS) is a proof system for TLA+ specifications, enabling formal mathematical proofs of system properties. It integrates with back-end provers and suppo...
- **TLA+ Toolbox IDE** — The TLA+ Toolbox is a full-featured IDE for writing TLA+ specifications, running TLC model checks, and managing proofs with TLAPS. Available as a standalone Eclipse-based applic...
- **TLA+ VS Code Extension** — The official TLA+ extension for Visual Studio Code providing language support, syntax highlighting, TLC integration, and model checking from within the VS Code editor.
- **TLA+ Community Modules** — A curated collection of TLA+ snippets, operators, and modules contributed by the TLA+ community, providing reusable formal specification components for common patterns in concur...
- **TLA+ Specification Examples** — A collection of TLA+ specifications of varying complexity covering distributed algorithms, consensus protocols, concurrent data structures, and system models. Includes reference...

## Security (1)

- **Tla Plus Foundation Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Tla Plus Foundation Plans Pricing**

## Use cases (6)

- **Distributed Algorithm Verification** — Model-check distributed consensus, replication, and coordination protocols against safety and liveness properties.
- **Concurrent System Specification** — Formally specify concurrent data structures, lock-free algorithms, and parallel systems using TLA+.
- **Protocol Design and Validation** — Use TLA+ to design and validate network protocols, database transactions, and API contracts before implementation.
- **Tooling Integration via Java API** — Embed TLC model checking in CI/CD pipelines or custom tools using the tla2tools Maven dependency.
- **Education and Training** — Use the TLA+ Toolbox, VS Code extension, and Leslie Lamport's video course to learn formal methods.
- **Safety and Liveness Proof** — Use TLAPS to produce machine-checked proofs of safety and liveness properties for critical systems.

## Tags

Formal Methods, Linux Foundation, Specifications, Verification, Distributed Systems, Concurrency

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/tla-plus-foundation/). Scores are computed from the provider's own public artifacts under a published rubric.