# Fullstory vs PostHog (slim)

> PostHog scores 68.4 (B) on agent readiness against Fullstory's 62.6 (B), and leads in every scored category. Both do analytics query. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/fullstory-vs-posthog.md (~2,250 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/fullstory-vs-posthog.json · canonical https://www.anchorterminal.com/compare/fullstory-vs-posthog
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

PostHog scores 68.4 (B) on agent readiness against Fullstory's 62.6 (B), and leads in every scored category. Both do analytics query.

- Fullstory: B 62.6, rank #329 of 722 · https://www.anchorterminal.com/tools/fullstory.min.md
- PostHog: B 68.4, rank #181 of 722 · https://www.anchorterminal.com/tools/posthog.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. Also No incidents deducted, where PostHog loses 7 points for them.
- PostHog, good for An agent that answers product questions in SQL or with funnel, retention and trends queries, and that manages feature flags, experiments and error tracking in the same project. Ahead on Reliability, 74 against 65; Schema & documentation, 81 against 62; Security & auth, 84 against 65; Payments & pricing, 40 against 25; Maintenance & community, 89 against 62. Also Free to start without a card; Open source.

| Category | Fullstory | PostHog |
| --- | --- | --- |
| Reliability (16%) | 65 | 74 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 62 | 81 |
| Agent ergonomics (13%) | 77 | 78 |
| Security & auth (14%) | 65 | 84 |
| Payments & pricing (10%) | 25 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 62 | 89 |
| Transparency & trust (7%) | 81 | 83 |

| Fact (where they differ) | Fullstory | PostHog |
| --- | --- | --- |
| Vendor | Fullstory, Inc. | PostHog Inc. |
| Hosted endpoint | `https://api.fullstory.com` | `https://us.posthog.com` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Licence | Proprietary service under Fullstory's master services agreement. The skills repository and the Node SDK on GitHub are MIT | MIT for the repository outside the `ee` directory, which has its own licence. PostHog Cloud is a hosted service under PostHog's terms |
| Tools exposed | none | 1096 |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| MCP registry | not listed | `io.github.PostHog/mcp` |
| Terms last updated | 2026-05-20 | 2026-06-29 |
| Privacy policy last updated | 2025-05-19 | 2026-06-29 |
| Customer content may train models | not found in the text | yes, with an opt-out |
| Popularity | 6.4k npm/wk | 40k stars, 15.2M npm/wk |