Attribute-based access control (ABAC) is the pattern of granting access by matching tags rather than by enumerating specific resource ARNs, and it is one of the more genuinely powerful — and more fiddly to hand-write correctly — condition patterns IAM supports. Tag-Based Access Policy Generator (ABAC) is a form-driven builder for the condition keys that make it work: aws:ResourceTag/<key> for tags on the thing being accessed, and aws:PrincipalTag/<key> for tags on the identity making the request.
Each row you add picks a scope — Resource tag or Principal tag — a tag key (like Environment or Team), a comparison operator (StringEquals for an exact match, StringNotEquals to exclude a value, or StringLike for wildcard matching with * and ?), and the value to compare against. The tool assembles the full condition key by joining the scope prefix and your tag key — aws:ResourceTag/Environment, for instance — and hands that, along with the operator and value, to the same condition-entry merging logic used across every condition-based tool in this category. That shared logic is what correctly handles the two ways multiple tag rows can combine: two different tag keys under the same operator merge into a single operator block (all of which must match), while the same operator and tag key entered twice with different values merges into an array under that one key (meaning any of those values satisfies it) — exactly matching how AWS itself structures a multi-key or multi-value Condition block, rather than producing separate, conflicting operator objects.
The "Add tag condition" button lets you build up as many rows as the access rule needs — a common ABAC pattern combines a resource tag check with a principal tag check in the same statement, expressing "a principal may only touch resources whose Environment tag matches production, and whose Team tag matches the principal's own team" (the latter often written by pairing an aws:ResourceTag/Team condition's expected value with a policy variable like ${aws:PrincipalTag/Team} for a genuinely dynamic, self-referential match, though this tool's value fields accept whatever literal or variable string you type). Rows missing a key, operator, or value are simply skipped rather than corrupting the output with an incomplete condition entry.
The value of ABAC over a resource-by-resource policy is architectural: as new resources are created with the right tags, or as principals are tagged with the right team or project, they are automatically covered by an existing ABAC policy without anyone editing that policy again — a meaningful operational win for large, fast-growing environments where hand-listing ARNs in every policy statement does not scale. This tool does not verify that any resource or principal in your account actually carries the tags you are matching against; tagging the underlying resources and principals correctly is a separate, necessary step this tool does not perform.
Beyond the tag conditions, this is a standard Allow-statement builder: multi-line actions and resources, an optional Sid, and the structural validator used throughout this category confirming the assembled document is well-formed before the JSON is shown. Everything — every tag row, key, operator, and value — is assembled entirely in your browser.