Evidence

Evidence is an open-source (MIT) business-intelligence-as-code framework that turns SQL queries plus Markdown into fast, version-controlled static data apps and dashboards. It is built on Svelte/Vite, runs queries through a DuckDB-WASM "Universal SQL" engine, and is consumed as a framework/CLI rather than a hosted REST API. Evidence Cloud adds managed hosting, a managed query engine, scheduled data syncs, and AI authoring assistance.

Evidence publishes 3 APIs on the APIs.io network: Framework (SQL + Markdown), USQL / Query Layer, and Cloud. Tagged areas include Business Intelligence, BI-as-Code, SQL, Markdown, and Data Apps.

Evidence’s developer surface includes documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

29.8/100 thin ▬ flat Agent 16/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemium

3 APIs

Business IntelligenceBI-as-CodeSQL Markdown Data Apps Open-Source

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 29.8/100 · thin

Contract Quality 7.0 / 25

Developer Ergonomics 2.4 / 20

Access Clarity 9.5 / 20

Operational Transparency 4.4 / 13

Contract Governance 0.0 / 12

Discoverability 6.5 / 10

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/evidence-dev: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Evidence Dev Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: evidence-dev
url: https://raw.githubusercontent.com/api-evangelist/evidence-dev/refs/heads/main/apis.yml
name: Evidence
kind: company
description: Evidence is an open-source (MIT) business-intelligence-as-code framework that turns SQL queries plus Markdown
  into fast, version-controlled static data apps and dashboards. It is built on Svelte/Vite, runs queries through a DuckDB-WASM
  "Universal SQL" engine, and is consumed as a framework/CLI rather than a hosted REST API. Evidence Cloud adds managed hosting,
  a managed query engine, scheduled data syncs, and AI authoring assistance.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/evidence-dev.png
tags:
- Business Intelligence
- BI-as-Code
- SQL
- Markdown
- Data Apps
- Open-Source
tags_raw:
- Business Intelligence
- BI as Code
- SQL
- Markdown
- Data Apps
- Open Source
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: evidence-dev:evidence-framework
  name: Evidence Framework (SQL + Markdown)
  tags:
  - Framework
  - CLI
  - SQL
  - Markdown
  - Static Site
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.evidence.dev/
  properties:
  - url: https://docs.evidence.dev/
    type: Documentation
  - url: https://docs.evidence.dev/reference/cli
    type: APIReference
  - url: https://github.com/evidence-dev/evidence
    type: GitHub
  - url: openapi/_original/evidence-dev-openapi.yml
    type: OpenAPI
  description: The open-source core. SQL statements embedded in Markdown files run against configured data sources and render
    charts and components into a static BI website (Svelte/Vite). The interface is a Node CLI (dev, build, preview, sources)
    plus authored Markdown - not a hosted REST API.
- aid: evidence-dev:usql-query-layer
  name: Evidence USQL / Query Layer
  tags:
  - USQL
  - DuckDB
  - Query Engine
  - Parquet
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://evidence.dev/universal-sql
  properties:
  - url: https://evidence.dev/universal-sql
    type: Documentation
  - url: https://docs.evidence.dev/core-concepts/data-sources/duckdb
    type: APIReference
  - url: https://github.com/evidence-dev/evidence
    type: GitHub
  - url: openapi/_original/evidence-dev-openapi.yml
    type: OpenAPI
  description: Universal SQL, the query engine built into Evidence core and powered by DuckDB's WebAssembly distribution.
    It extracts data sources to Parquet and lets you query across multiple sources with a single SQL dialect via an open data-source-adapter
    standard. Consumed in-process through SQL, not via a network REST endpoint.
- aid: evidence-dev:evidence-cloud
  name: Evidence Cloud
  tags:
  - Cloud
  - Managed Hosting
  - Deployment
  - Artificial Intelligence
  tags_raw:
  - Cloud
  - Managed Hosting
  - Deployment
  - AI
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://evidence.dev/cloud
  properties:
  - url: https://docs.evidence.dev/deployment/evidence-cloud/
    type: Documentation
  - url: https://evidence.dev/pricing
    type: APIReference
  - url: https://github.com/evidence-dev
    type: GitHub
  - url: openapi/_original/evidence-dev-openapi.yml
    type: OpenAPI
  description: The managed hosting and deployment platform for Evidence projects. Adds a managed query engine, multi-level
    caching, row-level security, scheduled data syncs, a browser-based IDE, and AI authoring assistance. Surfaced as a managed
    product/control-plane, not a documented public REST API for end users.
common:
- type: TrustCenter
  url: security/evidence-dev-trust-center.yml
- type: DomainSecurity
  url: security/evidence-dev-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/evidence-dev
- type: LinkedIn
  url: https://www.linkedin.com/company/evidence-dev
- type: Website
  url: https://evidence.dev/
- type: Documentation
  url: https://docs.evidence.dev/
- type: Plans
  url: plans/evidence-dev-plans-pricing.yml
- type: RateLimits
  url: rate-limits/evidence-dev-rate-limits.yml
- type: FinOps
  url: finops/evidence-dev-finops.yml
- type: Blog
  url: https://evidence.dev/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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Evidence

Kin Score

APIs 3

Evidence Framework (SQL + Markdown)

Evidence USQL / Query Layer

Evidence Cloud

Open Collections 2

API Collection

Evidence (Framework - not a REST API)

Pricing Plans 1

Evidence Dev Plans Pricing