Tessera for the Abilities API

Tessera is a developer library for plugin authors who register abilities via wp_register_ability() and want snapshot capture, audit logging, approval workflows, and one-click rollback for every invocation across REST, MCP, internal PHP, and WP-CLI without building it themselves.

Declare what state your ability touches; Tessera handles the safety wrapper.

What you get out of the box

• Pre + post snapshots. Every safety-enabled invocation captures declared state before the callback and (on success) after, so the audit log can show a real diff.
• Audit log. One row per invocation with ability name, caller (REST/MCP/CLI/internal), user, args, result, status, duration, pre/post hashes, and parent_invocation_id for nested calls.
• One-click rollback. Restore captured state from post_meta, options, taxonomy term assignments, user roles + caps. File contents support tiered drift detection (mtime / mtime_size / critical_hash / full_hash) plus opt-in real byte-level rollback via full_content strategy.
• Drift check on rollback. Live state is hashed and compared to the snapshot’s post-state before restoring; if they differ the rollback returns an error unless forced.
• Concurrency lock. Capture + execute is serialised per surface set via a MySQL advisory lock so two simultaneous invocations do not capture each other’s mid-states.
• Encrypted redaction. Scrub secrets out of args, results, and snapshots. Stores redacted values as AES-256-GCM envelopes so rollback can still restore them.
• Approval queue. When safety.requires_approval is set, the wrapper blocks execution and returns a 202 pending response. A human approves or rejects via wp-admin, WP-CLI, or REST. Multi-stage sequential or parallel approval chains are supported.
• Multisite support. Each subsite gets its own set of wp_<N>_abilityguard_* tables, with auto-install on wp_initialize_site and auto-drop on wpmu_drop_tables.
• Retention. Daily WP-Cron prunes old log rows (defaults: 30 days normal, 180 days destructive) and orphaned snapshots.

Surfaces

• PHP API with wp_register_ability( $name, [ ..., 'safety' => [...] ] ) and helpers abilityguard_rollback, abilityguard_snapshot_meta, abilityguard_snapshot_options.
• REST: /abilityguard/v1/log, /log/<id>, /log/export, /rollback/<id>, /rollback/bulk, /approval, /approval/<id>/approve, /approval/<id>/reject, /approval/bulk, /approval/export, /retention, /retention/prune, /health.
• WP-CLI: wp abilityguard log list/show, wp abilityguard rollback <id>, wp abilityguard approval list/approve/reject <id>, wp abilityguard prune.
• wp-admin: Tools > Tessera. Hybrid timeline + command-palette search, snapshot drawer, JSON-highlighted Input/Result tabs, invocation chain navigation, and real rollback against the captured snapshot.

Example

wp_register_ability( 'my-plugin/update-product-price', array(
    'label'               => 'Update product price',
    'description'         => 'Updates the price on a WooCommerce product.',
    'category'            => 'woocommerce',
    'input_schema'        => array( /* ... */ ),
    'permission_callback' => fn() => current_user_can( 'manage_woocommerce' ),
    'execute_callback'    => fn( $args ) => update_post_meta( $args['product_id'], '_price', $args['price'] ),
    'safety' => array(
        'destructive'       => true,
        'requires_approval' => false,
        'snapshot'          => fn( $input ) => array(
            'post_meta' => array( $input['product_id'] => array( '_price', '_regular_price' ) ),
            'options'   => array( 'woocommerce_last_price_change' ),
        ),
    ),
) );

Documentation

Full plugin-author documentation lives at the GitHub repo: https://github.com/ibrahimhajjaj/abilityguard

Source Code

The full source for Tessera, including the unminified React source for the admin app, lives on GitHub: https://github.com/ibrahimhajjaj/abilityguard

• The admin bundle assets/admin.js is compiled from assets/admin.jsx (React + JSX, no preprocessor magic beyond JSX).
• The bundler is esbuild, configured in scripts/build.mjs.
• To rebuild the admin bundle from a fresh checkout, run npm install once, then npm run build whenever assets/admin.jsx changes. This regenerates assets/admin.js in place.
• The release zip published to the WordPress.org directory is produced by scripts/build-release.sh, which excludes development artifacts (tests, examples, build configs) but keeps everything required for the plugin to run.