# Fullstory vs GrowthBook (slim)

> GrowthBook scores 70.1 (BB) on agent readiness against Fullstory's 62.6 (B), and leads in 5 of 7 scored categories. Fullstory leads on transparency & trust. Both do analytics query. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/fullstory-vs-growthbook.md (~2,350 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/fullstory-vs-growthbook.json · canonical https://www.anchorterminal.com/compare/fullstory-vs-growthbook
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

GrowthBook scores 70.1 (BB) on agent readiness against Fullstory's 62.6 (B), and leads in 5 of 7 scored categories. Fullstory leads on transparency & trust. Both do analytics query.

- Fullstory: B 62.6, rank #329 of 722 · https://www.anchorterminal.com/tools/fullstory.min.md
- GrowthBook: BB 70.1, rank #142 of 722 · https://www.anchorterminal.com/tools/growthbook.min.md
- Fullstory, good for An agent that sends server-side events and user properties, fetches a session's events or an AI summary for support or debugging, or exports a segment. Ahead on Transparency & trust, 81 against 74. Also No incidents deducted, where GrowthBook loses 3 points for them.
- GrowthBook, good for Teams that want flags and experiments analysed against their own warehouse, with an open-source core and a self-hosted option. Ahead on Reliability, 86 against 65; Schema & documentation, 76 against 62; Payments & pricing, 40 against 25; Maintenance & community, 89 against 62. Also Agent-ready, a grade of BB or better; Runs on your own machine; Free to start without a card; Open source.

| Category | Fullstory | GrowthBook |
| --- | --- | --- |
| Reliability (16%) | 65 | 86 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 62 | 76 |
| Agent ergonomics (13%) | 77 | 76 |
| Security & auth (14%) | 65 | 68 |
| Payments & pricing (10%) | 25 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 62 | 89 |
| Transparency & trust (7%) | 81 | 74 |

| Fact (where they differ) | Fullstory | GrowthBook |
| --- | --- | --- |
| Vendor | Fullstory, Inc. | GrowthBook, Inc. |
| Hosted endpoint | `https://api.fullstory.com` | `https://mcp.growthbook.io/mcp` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Licence | Proprietary service under Fullstory's master services agreement. The skills repository and the Node SDK on GitHub are MIT | MIT for the core and for the MCP server. Three enterprise directories in the main repository are under GrowthBook's enterprise licence. GrowthBook Cloud is a hosted service under the Customer Agreement |
| Tools exposed | none | 4 |
| llms.txt | no | yes |
| MCP registry | not listed | `io.github.growthbook/growthbook-mcp` |
| Last release | 2026-10-05 | 2026-10-06 |
| Terms last updated | 2026-05-20 | 2025-06-19 |
| Privacy policy last updated | 2025-05-19 | 2026-06-08 |
| Customer content may train models | not found in the text | yes |
| Popularity | 6.4k npm/wk | 8.5k stars, 1.3M npm/wk, 433k PyPI/wk |