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Agent skill

Canva Install Auth

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Implement Canva Connect OAuth 2.0 Authorization Code with SHA-256 PKCE on a backend.

MITAuto-check passedBackend & APIs

Install Canva Install Auth

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill canva-install-auth -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace canva-install-auth --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/canva-install-auth .claude/skills/canva-install-auth && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
canva-install-auth
GitHub stars
2.8k
Token cost
~1k tokens
SKILL.md length
417 words
Files
2 (incl. references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Implement Canva Connect OAuth 2.0 Authorization Code with SHA-256 PKCE on a backend.

  • Works in 7 steps: Register the integration → Create authorization state → Build the authorization URL → …
  • Creating an integration
  • SKILL.md covers Overview, Prerequisites, Instructions and Authentication, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Canva Install Auth is an agent skill from jeremylongshore/tons-of-skills-marketplace. Implement Canva Connect OAuth 2.0 Authorization Code with SHA-256 PKCE on a backend. Use when creating an integration, adding explicit scopes, handling callback state, or rotating single-use refresh tokens. Trigger with: "set up Canva OAuth", "Canva PKCE", "refresh Canva token".

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/official-docs.md`). Compatibility notes: Requires a Canva Developer Portal integration, controlled redirect URI, backend secret store, and consent design.

It sits in Backend & APIs, covering OAuth and OpenID Connect and Authorization and RBAC. It works with Canva. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Creating an integration
  • Adding explicit scopes
  • Handling callback state
  • Rotating single-use refresh tokens

Example prompts

  • “set up Canva OAuth”
  • “Canva PKCE”
  • “refresh Canva token”
  • “/canva-install-auth”

Requirements

  • Compatibility (from SKILL.md): Requires a Canva Developer Portal integration, controlled redirect URI, backend secret store, and consent design.
  • Pre-approved tools (allowed-tools): Read, Grep, Write, Edit

Workflow steps

7 steps, taken from the step headings in SKILL.md.

  1. Register the integration
  2. Create authorization state
  3. Build the authorization URL
  4. Validate the callback
  5. Exchange on the backend
  6. Refresh atomically
  7. Support disconnect

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Grep
    • Write
    • Edit

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • canva.dev

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires a Canva Developer Portal integration, controlled redirect URI, backend secret store, and consent design.

    From compatibility in the SKILL.md frontmatter.

Context cost

Canva Install Auth loads about 1k tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 75 tokens; SKILL.md has 417 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~75
When it runs · the whole SKILL.md, loaded when a task matches
~1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 417 words, ~1,014 tokens.

Download SKILL.mdSave it as .claude/skills/canva-install-auth/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
canva-install-auth
description
Implement Canva Connect OAuth 2.0 Authorization Code with SHA-256 PKCE on a backend. Use when creating an integration, adding explicit scopes, handling callback state, or rotating single-use refresh tokens. Trigger with: "set up Canva OAuth", "Canva PKCE", "refresh Canva token".
allowed-tools
Read, Grep, Write, Edit
compatibility
Requires a Canva Developer Portal integration, controlled redirect URI, backend secret store, and consent design.
version
2.0.0
argument-hint
[redirect-uri-and-required-scopes]
model
inherit
effort
high
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, canva, authentication, operations

Canva OAuth Credential Boundary

Overview

Build authorization as a stateful backend protocol, not a copied token snippet. Keep the PKCE verifier and client secret out of the browser and serialize refresh-token replacement per user.

Prerequisites

  • Developer Portal integration and saved client secret
  • Controlled redirect URI and exact explicit scopes
  • Backend session, token vault, encryption, and revocation path

Instructions

Step 1: Register the integration

Configure name, minimum scopes, at least one controlled redirect URI, and secret storage. Remove localhost and loopback redirect hosts from production configuration.

Step 2: Create authorization state

Generate high-entropy per-request state and a PKCE verifier that meets Canva's documented character/length rules. Store both server-side with short expiry and one-time use.

Step 3: Build the authorization URL

Use Canva's authorization endpoint, S256 challenge method, explicit space-separated scopes, client ID, state, and an exactly registered redirect URI.

Step 4: Validate the callback

Reject missing/mismatched/expired state, repeated codes, unexpected redirect context, and errors before token exchange.

Step 5: Exchange on the backend

Authenticate the token request using the approved client method, send the verifier and authorization code, validate the response, encrypt access and refresh tokens separately, and discard transient secrets.

Step 6: Refresh atomically

Single-flight refresh per user because each refresh token is single-use. Commit the new access token, expiry, and replacement refresh token atomically; reauthorize on unrecoverable failure.

Step 7: Support disconnect

Revoke when required, delete application-held tokens and cached authorization, and record a credential-free receipt.

Show full SKILL.md (180 more words)Show less

Authentication

Canva Connect calls use Bearer access tokens obtained by a backend through OAuth 2.0 Authorization Code with SHA-256 PKCE. Request explicit least-privilege scopes, keep client secrets and tokens out of browser-visible state, and serialize refresh so the replacement single-use refresh token is stored atomically.

Tool Discipline

Use Read and Grep for discovery and evidence. Use Write or Edit only for the approved artifact, code, configuration, test, or receipt described by this workflow; do not make an unapproved Canva-side change.

Output

  • Scoped decision or implementation artifact
  • Redacted operation and validation receipt
  • Failure, rollback, and follow-up ownership record

Examples

A callback consumes a one-time state record and server-held verifier, exchanges the code on the backend, and stores the replacement refresh token in the same transaction that invalidates the prior token.

Error Handling

FailureResponse
State mismatchStop the flow and create no token record
Verifier missingRestart authorization; never weaken PKCE
Refresh race detectedSerialize by Canva user and retain one authoritative result
Scope added laterUpdate portal configuration and obtain fresh user consent

Resources

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in skills/.curated/canva-install-auth of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • references/official-docs.md

Open the folder on GitHubat commit cfae287

Compare with similar skills

Canva Install Auth next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Canva Install Auth compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Canva Install Auth this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1kAutomated safety check: PassMIT
Cognitoitsmostafa/aws-agent-skills1.2k1 repos~2.3kAutomated safety check: PassMIT
Auth Implementation Patternsynulihao/AgentSkillOS61810 repos~4.4kAutomated safety check: PassNone
Soundcloud API Authsoundcloud/api259—~562Automated safety check: PassNone
Frontmcp Auth UIagentfront/frontmcp146—~3.7kAutomated safety check: PassApache-2.0
Supercheck Security Authsupercheck-io/supercheck215—~1.2kAutomated safety check: PassAGPL-3.0

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Works with

Categories

Questions about Canva Install Auth

What does Canva Install Auth do?

Implement Canva Connect OAuth 2.0 Authorization Code with SHA-256 PKCE on a backend. Canva Install Auth is an agent skill from jeremylongshore/tons-of-skills-marketplace.0 Authorization Code with SHA-256 PKCE on a backend.

When should I use Canva Install Auth?

Canva Install Auth fits situations like: creating an integration; adding explicit scopes; handling callback state; rotating single-use refresh tokens.

How do I install Canva Install Auth in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill canva-install-auth -a claude-code`. Or copy the skill folder (skills/.curated/canva-install-auth in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/canva-install-auth in your project. Claude Code loads it when a task matches its description.

How do I install Canva Install Auth in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill canva-install-auth -a codex`. Or copy the skill folder (skills/.curated/canva-install-auth in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/canva-install-auth in your project. Codex loads it when a task matches its description.

Can I use Canva Install Auth in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill canva-install-auth -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/canva-install-auth, .gemini/skills/canva-install-auth, .github/skills/canva-install-auth and .opencode/skills/canva-install-auth in your project.

What does Canva Install Auth need to run?

SKILL.md names no scripts, command-line tools or credentials: Canva Install Auth is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Grep, Write, Edit. Compatibility (from SKILL.md): Requires a Canva Developer Portal integration, controlled redirect URI, backend secret store, and consent design..

Does Canva Install Auth access the network?

SKILL.md names 1 domain. As links in the text: canva.dev. This is read from the text; nothing was executed.

Is Canva Install Auth safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Canva Install Auth use?

Canva Install Auth is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Canva Install Auth use?

About 1k tokens (SKILL.md is roughly 4.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 126 tokens, read only when the agent opens those files.

What are the alternatives to Canva Install Auth?

Skills that share tags, products or a category with Canva Install Auth: Cognito (itsmostafa/aws-agent-skills, 1.2k stars), Auth Implementation Patterns (ynulihao/AgentSkillOS, 618 stars), Soundcloud API Auth (soundcloud/api, 259 stars) and Frontmcp Auth UI (agentfront/frontmcp, 146 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Canva Install Auth?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.