Trello — can an agent use it?
Trello is a standout in agent readiness: an official MCP server (57 tools, July 2026) covering boards, lists, cards, checklists, search, and the new Planner — plus a mature REST API with OAuth 2.0, unlimited webhooks, and free API access on all plans. The main friction is the MCP's one-workspace-per-connection limit and missing features (comments, attachments, custom fields still on the roadmap).
FIND & RETRIEVE · 7.0
ACT & TRANSACT · 8.1
TRUST & DURABILITY · 7.5
FIND & RETRIEVE7.0/10Can an agent get correct information?
Machine-readable surface6/10
Server-rendered HTML with 1,257 words visible without JS. Sitemap valid with fresh lastmod, referenced in robots.txt. API catalog discoverable at /.well-known/api-catalog. However, no JSON-LD structured data at all — agents must parse prose to identify the product. No llms.txt (the URL returns the Trello SPA shell, not a text file). Robots.txt is permissive with no AI-specific rules. The marketing site HTML is clean but lacks structured markup. source
Information retrieval quality7/10
Pricing page renders with real content showing Free/Standard/Premium/Enterprise tiers with feature comparison. Actual prices are visible in the HTML. Rate limits are published with exact numbers per key and per token in the developer docs. Free tier limits (10 boards, 250 automation runs/month) are clearly stated. Enterprise requires 'contact sales' only for custom pricing, not for feature details. source
Documentation for machines8/10
REST API v1 documentation at developer.atlassian.com/cloud/trello/rest/ is comprehensive: full endpoint reference for boards, cards, lists, members, checklists, custom fields, labels, organizations, and webhooks. Rate limit documentation includes exact numbers, HTTP headers, error codes, and escalation policy. API introduction guide covers auth, paging, nested resources, and best practices. The docs are hosted on the Atlassian developer platform — stable, well-indexed, and not behind a login. source
ACT & TRANSACT8.1/10Can an agent do the job?
Action coverage8/10
Full CRUD on boards, cards, lists, checklists, labels, and members. Webhooks are unlimited with no quota. Card lifecycle is complete: create, update, move, archive, assign labels, manage checklists. The MCP server adds 57 tools covering the same core actions plus the new Planner (calendar/focus-time) and Inbox features. Main gaps: MCP lacks comments, attachments, and custom fields (on roadmap). Some admin-level actions (Power-Up configuration, workspace billing) are not API-accessible. source
Agent protocol support9/10
Official Atlassian MCP server launched July 22, 2026 at mcp.trello.com/v1, hosted on GitHub at atlassian/trello-mcp-server. 57 tools covering boards, lists, cards, checklists, search, Planner, and Inbox. OAuth 2.0 with consent screen for workspace selection and permission scoping (Read, Write, Search). Supported by Claude Desktop, Claude Code, Cursor, VS Code, and ChatGPT. No destructive deletes — archiving only (safety feature). Free on all Trello plans. This is a comprehensive, first-party, actively maintained agent protocol surface covering the service's core actions. source
Access & auth friction7.5/10
Two auth methods: API key + token (simple, self-serve from trello.com/apps/admin) and OAuth 2.0 (for production apps, delegated auth with scoped permissions). MCP server uses OAuth 2.0 with consent screen and workspace-level permission grants. Credentials obtainable in minutes. OAuth scopes cover read/write at board, organization, and member levels. Token-based auth is less secure (long-lived, query-parameter-based) but OAuth 2.0 path is properly scoped. source
Agent payment capabilityN/A
Trello is a subscription/freemium service. Customers pay Atlassian a per-user monthly fee, not a per-transaction amount. No agent payment protocol (ACP, AP2, MPP, x402) applies. source
Cost & rate fairness8/10
API access is free on all Trello plans including the free tier — no separate API pricing. Rate limits are generous: 300 requests per 10 seconds per API key, 100 per 10 seconds per token. Unlimited webhooks. Rate limit monitoring via response headers (remaining/max/interval). Same limits across all subscription tiers. The free tier's 10-board limit constrains usage scope but not API access. MCP server is also free. No agent-vs-human price discrimination. source
TRUST & DURABILITY7.5/10Will it still work next quarter?
Permission & ToS stance7/10
Atlassian Cloud Terms of Service prohibit reverse engineering and circumventing usage limits — standard SaaS language. No explicit prohibition of bots or automated API access. The official MCP server is designed for AI agent use, making automation a first-class supported workflow. Separate AI Terms exist for AI-related features. The terms restrict reselling Trello access but permit charging overall fees for services that use Trello as a component. No hostile enforcement history against API consumers. source
Reliability & continuity8/10
Public status page at trello.status.atlassian.com with email/SMS subscription and incident history. Atlassian is a publicly traded company (TEAM, Nasdaq) with years of backward-compatible API stability — Trello REST API has been at v1 since launch with no breaking changes. The developer platform has a changelog. MCP server roadmap is published and actively developed. Trello has been operational since 2011 (15 years) with no major API deprecation events. source
Sources
Point-in-time assessment — services change terms, prices and APIs often. That volatility is itself scored under Reliability & continuity. Re-verified at least quarterly.
- trello.com — home (accessed 2026-09-15)
- trello.com/pricing — pricing (accessed 2026-09-15)
- atlassian.com/legal/cloud-terms-of-service — terms of service (accessed 2026-09-15)
- trello.com/robots.txt — robots (accessed 2026-09-15)
- developer.atlassian.com/cloud/trello/rest — REST API documentation (accessed 2026-09-15)
- developer.atlassian.com/cloud/trello/guides/rest-ap… — API introduction guide (accessed 2026-09-15)
- developer.atlassian.com/cloud/trello/guides/rest-ap… — rate limits (accessed 2026-09-15)
- github.com/atlassian/trello-mcp-server — official MCP server repo (accessed 2026-09-15)
- trello.status.atlassian.com — status page (accessed 2026-09-15)
- community.atlassian.com/forums/Trello-articles/Intr… — MCP launch announcement (accessed 2026-09-15)