ActionGitHubUpdated June 2026

How do I post a comment on a GitHub issue or PR?

Short answer: You can create comment in GitHub by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the GitHub Create Comment action to a workflow, map its 4 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.

Create Comment in GitHub — start free
Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

FieldTypeRequiredDescription
Repository Owner
owner
stringRequiredGitHub repository owner — the user or organization login (the part before / in owner/repo URLs).
Repository Name
repo
stringRequiredGitHub repository name — the part after / in owner/repo URLs. Not the full URL.
Issue or PR Number
issue_number
stringRequiredGitHub issue number — the integer shown after # in the issue URL (per-repo, not global).
Comment Body
body
stringRequiredComment text (supports GitHub Markdown)
Sample request
{
"owner": "e.g. acme-corp",
"repo": "e.g. my-project",
"issue_number": "e.g. 42",
"body": "e.g. Looks like this is related to #38. Investigating..."
}
Returns
{
"id": 1,
"body": "Looks like this is related to #38.",
"user": {
"login": "johndoe"
},
"html_url": "https://github.com/acme-corp/my-project/issues/42#issuecomment-1",
"created_at": "2025-01-15T12:00:00Z"
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for Create Comment.

Any of these apps can fire this action as part of a workflow.

FAQ

Questions about Create Comment.

What does the Create Comment action do in GitHub?
Adds a comment to a GitHub issue or pull request. Used for AI review summaries, build-status pings, or status broadcasts from CI/CD.
What inputs does Create Comment require?
Required: Repository Owner, Repository Name, Issue or PR Number, Comment Body. Every input accepts a static value or a variable from any upstream node in your workflow.
Can I use dynamic inputs from earlier workflow nodes?
Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.
What happens if GitHub returns an error?
The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.
Does Create Comment support batch operations?
Yes. Run Create Comment inside a Loop node to process arrays. TinyCommand handles GitHub's rate limits automatically so you don't have to throttle manually.
More actions

Other GitHub actions.

Action
Add Labels
Adds labels to a GitHub issue or pull request by name. Used for AI-driven triage or auto-tagging based on file paths touched.
Action
Create Issue
Creates a new issue in a GitHub repository with title, body, assignees, labels, milestone, and project. The default write for piping bug reports or alerts into GitHub.
Action
Create or Update File
Creates or updates a file in a GitHub repository in a single commit, with branch, commit message, and content. The SHA is auto-fetched on update; the standard tool for small file commits without a full git client.
Action
Create Pull Request
Creates a new pull request in a GitHub repository from a head branch to a base branch with title, body, and draft flag. Used for auto-PRs from generated code or dependency updates.
Action
Submit PR Review
Submits a review on a GitHub pull request: APPROVE, REQUEST_CHANGES, or COMMENT. Used for AI code review or for cross-system approval gating.
Action
Create Release
Creates a new release for a repository with tag name, target commitish, name, body (release notes), draft, and prerelease flags. Used to automate releases from your CI pipeline.
Create Comment in GitHub — start free