Trello OAuth 2.0 Client
Generated live by the research agent (Gemini), checked 2026-10-19. Setup not tested by hand.
Developers can configure a Trello OAuth 2.0 client through the Trello apps administration page to connect external users. The setup involves creating client configurations, defining callback URLs, and selecting appropriate scopes.
Not enough evidence to rate
- Hands-on work
- 1–5 hours
- Waiting for approval
- Unknown
- Confidence
- low
Assumes: A public app that any external user can connect, requesting the scopes an AI agent typically needs to read and act on the user's data.
The agent couldn’t establish 5 of the 7 facts that set difficulty, so it won’t guess a tier. Known hurdles put it at tier 1 or higher. Check the provider’s developer docs directly, or regenerate later.
Solid dark bar: your hands-on work. Amber: the minimum wait. Hatched: the range sources disagree on, or an open-ended wait.[1][2]
What we know so far. Nothing gates this path. 5 facts unknown, so the tier could be higher.
| Self-serve credentials | Yes | Managed by finding the app in the Trello apps administration page.[1] |
|---|---|---|
| Limits until reviewed | No | Not mentioned in the official process:[1][2] |
| Provider review | Unknown | Review requirements are mentioned for Power-Up launches, but standard OAuth client review processes are not detailed.[3] |
| Security assessment | Unknown | Security assessments are not mentioned in the standard configuration documentation.[1] |
| Business verification | Unknown | Business verification is not detailed in the official configuration steps.[1] |
| Mandatory fees | Unknown | Application or API fees are not mentioned in the documentation.[1][2] |
| Partner or paid access | Unknown | Gated access or waitlists are not mentioned for standard OAuth clients.[1] |
You can start today without any of this. Composio already provides a managed OAuth app for Trello OAuth 2.0 Client (trello), so users can connect while you work through your own app. You need your own app for your brand on the consent screen, your own rate limits, or scopes beyond the defaults. Managed auth list
If your case is different
- Confidential Client
- Confidential clients require a secure backend and must pass a client secret when authorizing or refreshing tokens.
Steps
Agent steps an AI agent can do or draft for you. You steps that need your identity, accounts, legal authority or a real demo.
Manage OAuth 2.0 client configuration
YouNavigate to the Trello apps administration page and access the OAuth 2.0 tab to manage the client configuration.[1]
Set callback URLs
AgentSpecify the callback URLs used by the OAuth 2.0 client for authorization.[1]
Configure scopes
AgentSelect or deselect scopes from the table and save to define what API actions the client is allowed to perform.[1]
What you will need
- The redirect_uri parameter value in the authorization URL must match one of the app's configured callback URLs.[1]
Nuances that catch people out
- Changing the scopes of your client may require you to re-authorize with your users with the new scopes.[1]
Evidence
What we could not verify
- Exact approval wait times are not specified.
- Precise hands-on hours required for complete implementation are not officially quantified.
Sources
Each quote was checked by code against the live page. “Not found on page” means the quote may be paraphrased, so treat that claim with care.
- OAuth 2.0 Client ConfigurationProvider docsQuote found on pagechecked 2026-10-19
You can manage your OAuth 2.0 client by finding your app in the Trello apps administration page , and clicking on the "OAuth 2.0" tab.
- Getting Started with OAuth 2.0Provider docsQuote found on pagechecked 2026-10-19
Trello's OAuth 2.0 3LO protocol (also known as "three-legged OAuth" or "authorization code grants" ) is the right choice for user-facing apps, where a person logs in and consents to access.
- Power-Up Launch PlaybookProvider docschecked 2026-10-19