[EX-2197] Add three new experiment MCP tools (#33)

* Add three new experiment MCP tools

Adds support for listing, getting, and retrieving variant content for experiments:
- list_experiments: List experiments with filtering by campaign, status, and date range
- get_experiment: Get detailed experiment information by ID
- get_experiment_variants: Get variant content including templates

Updates @iterable/api to 0.8.0 which includes the new experiment endpoints.
Adds comprehensive unit tests for all new tools.

Implements: EX-2197, EX-2198, EX-2199, EX-2200

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* Use published @iterable/api@0.8.0 from npm

Removes local link and uses the published package from npm registry.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* Add experiment tools to NON_PII and READ_ONLY tool filters

Adds the three new experiment tools to the appropriate filter lists:
- get_experiment: Read-only, non-PII
- get_experiment_variants: Read-only, non-PII
- list_experiments: Read-only, non-PII

Also regenerates pnpm-lock.yaml to fix overrides configuration mismatch
that was causing frozen lockfile CI failures.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* Remove local api-client override from package.json

Removes the override that was linking to the local api-client directory.
Now uses the published @iterable/api@0.8.0 from npm.

Also updates TOOLS.md with the new experiment tools.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: marcomorais33

TOOLS.md

@@ -1,4 +1,4 @@
-# Available Iterable MCP Tools (105 tools)
+# Available Iterable MCP Tools (108 tools)
 
 **Legend:**
 - 🔒 = Requires enabling user PII access
@@ -49,8 +49,11 @@
 - **track_bulk_events** 🔒✏️✉️: Track multiple events in a single request for better performance
 - **track_event** 🔒✏️✉️: Track a custom event for a user
 
-## Experiments (1 tools)
+## Experiments (4 tools)
+- **get_experiment**: Get detailed information about a specific experiment by ID, including variants summary and constraints
 - **get_experiment_metrics**: Get experiment metrics for A/B testing analysis (currently supports email experiments only)
+- **get_experiment_variants**: Get variant content for an experiment, including subject lines, preheaders, HTML source, and plain text
+- **list_experiments**: List experiments with optional filtering by campaign, status, and date range. Supports pagination.
 
 ## Journeys (2 tools)
 - **get_journeys**: Get journeys (workflows) with optional pagination and state filtering

package.json

@@ -38,7 +38,8 @@
     "minimumReleaseAge": 4320,
     "minimumReleaseAgeExclude": [
       "@iterable/*"
-    ]
+    ],
+    "overrides": {}
   },
   "scripts": {
     "build": "pnpm lint:fix && tsc --project tsconfig.build.json && pnpm update-tools && chmod +x dist/index.js",
@@ -75,7 +76,7 @@
   },
   "dependencies": {
     "@alcyone-labs/zod-to-json-schema": "4.0.10",
-    "@iterable/api": "0.7.0",
+    "@iterable/api": "0.8.0",
     "@modelcontextprotocol/sdk": "1.18.1",
     "@primno/dpapi": "2.0.1",
     "@types/json-schema": "7.0.15",