# Taxi - Describe How Your APIs and Data Relate

**Canonical:** https://apis.io/providers/taxi/  
**Website:** https://taxilang.org/  
**APIs profiled:** 8

Taxi is an open-source language (Apache 2.0) for describing APIs, data models, and how data relates across an entire ecosystem. TaxiQL is a declarative query language that lets consumers define the data they want while Taxi handles orchestration across REST APIs, databases, Kafka topics, gRPC services, and S3 buckets. Taxi eliminates manual integration code by using semantic type annotations to automatically discover data paths and adapt to evolving API schemas.

## Kin Score — 32.3 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 32.3).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 60.3 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 20.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| 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 |

## Access

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

## APIs (8)

- **TaxiQL Query API** — TaxiQL is a declarative query language for federated data retrieval across multiple APIs and data sources. Queries specify the desired data structure using semantic types and Ta...
- **Orbital Platform** — Orbital is the companion data platform for Taxi that hosts TaxiQL queries, provides a schema registry, and executes federated data integrations across APIs, databases, and strea...
- **Taxi Playground** — Interactive web-based editor for writing Taxi schemas and TaxiQL queries with live diagram generation and query execution preview.
- **Taxi - Describe How Your APIs and Data Relate Conversion API** — Convert existing specs to Taxi format
- **Taxi - Describe How Your APIs and Data Relate Queries API** — TaxiQL query execution
- **Taxi - Describe How Your APIs and Data Relate Schemas API** — Taxi schema management and compilation
- **Taxi - Describe How Your APIs and Data Relate Services API** — Service registry operations
- **Taxi - Describe How Your APIs and Data Relate Types API** — Type registry and discovery

## Agentic access (1)

- **Taxi Agentic Access** — 11 operations · 4 acting

## Security (1)

- **Taxi Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Taxi Plans Pricing**

## Tags

API Description, Data Integration, Open-Source, Query Language, Schema, Semantic

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