# cnvs.app

**Canonical:** https://apis.io/providers/cnvs-app/  
**Website:** https://cnvs.app/  
**APIs profiled:** 1

cnvs.app is a free, no-signup, real-time collaborative whiteboard in the browser, operated by Coder AI (coderai.dev). Users open a canvas, share the link and draw and write together with WebSocket sync; any board can switch to a kanban todo mode, render Mermaid diagrams from text, and install as a PWA with offline access to cached boards. It exposes a public Model Context Protocol (MCP) endpoint at https://cnvs.app/mcp and a REST API so AI assistants such as Claude can read and edit the same live board as humans.

## Kin Score — 59.5 / 100 (strong)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 81.7 |
| Contract Quality | 64.5 |
| Contract Governance | 22.0 |
| Operational Transparency | 45.2 |
| Developer Ergonomics | 57.1 |
| Access Clarity | 57.4 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 30.4 (matched via fallback).

## Agent readiness — 48.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | partial |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | no |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | distinct |
| MCP Tool Quality | na |

## Access

Free · Self-serve signup — onboarding: self-serve, pricing: free, trial: no (confidence: high).

## APIs (6)

- **cnvs.app AI Facing API** — Endpoints designed for LLM consumption — schematic SVG previews and clean JSON snapshots.
- **cnvs.app Boards API** — Create, read and delete boards.
- **cnvs.app Discovery API** — Service-level discovery documents for AI agents and MCP clients.
- **cnvs.app Items API** — Add / update / move / delete draw-board items (texts, strokes, images, links). Mirrors MCP tools one-to-one.
- **cnvs.app Kanban API** — Todo-mode kanban board: mode switch, columns, tasks, row (lane) titles, and shared column width. Mirrors the MCP kanban tools one-to-one (`set_board_mode`, `create_column`, `cre...
- **cnvs.app Reads API** — The Reads API from cnvs.app — 2 operation(s) for reads.

## MCP servers (1)

- **cnvs.app MCP server** — Official public remote MCP server for cnvs.app. Live probe on 2026-11-04: GET /mcp returned a discovery stub (name cnvs-mcp 0.1.0, protocolVersion 2025-06-18, transport streamab...

## Agentic access (1)

- **cnvs.app Agentic Access** — 37 operations · 19 acting

## Security (3)

- **cnvs.app Authentication** — none/apiKey · 3 schemes
- **cnvs.app Domain Security** — TLSv1.3
- **cnvs.app Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **cnvs.app Plans Pricing**

## Tags

Company, Whiteboard, Collaboration, Real-Time, Kanban, MCP, AI Agents, Diagramming

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