Security / HISTOR — MCP tool-definition transparency log
HISTOR — MCP tool-definition transparency log
io.github.alexar76/histor · v0.5.2
Check, diff and history of MCP tool definitions, from a public signed log of 88k+ servers.
Description supplied by the publisher in the MCP Registry. We have not tested this server.
Install
uvx aimarket-historAssembled from the package metadata in the official MCP Registry (including any subcommand or flag the publisher lists). Some publishers do not list the subcommand that starts MCP mode, so confirm the command in the README, along with any required configuration and credentials, before connecting it to real data.
Signals
| GitHub stars | 1 |
| npm weekly downloads | - |
| Last push | 1d ago |
| Licence | MIT |
| Open issues | 0 |
| SECURITY.md | Yes |
| Language | Python |
| Latest version published | 2026-10-31 |
Signals captured from GitHub, npm and the official MCP Registry on November 2, 2026. See the scoring method.
Similar servers
MCP security checks — WARDEN and HISTOR
Score 75Scan MCP tool definitions for poisoning, look up server history, count tool-list tokens. Free.
Deus Witness
Score 70MCP proxy: holds risky tool calls for passkey approval; signed receipts you can check offline.
prompt-protection
Score 84Scan prompts, tool definitions and model output for injection, and guard agent tool calls.
Five MCP servers worth your time, every week
The Plug Weekly is a free email picked from these scores. About a 3-minute read. Unsubscribe any time.