Comparison
SendLetter vs ECC
ECC has more GitHub stars (280,199 vs 0). ECC was updated more recently (last commit 9h ago). Data comes straight from GitHub and refreshes daily.
SendLetter
Send real, printed letters by post across Europe. Requires a free account; quote before sending.
$
claude mcp add --transport http sendletter https://sendletter.eu/api/mcp
ECC
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
$
/plugin marketplace add https://github.com/affaan-m/ECC| Metric | SendLetter | ECC |
|---|---|---|
| Type | MCP server | MCP server |
| GitHub stars | 0 | 280,199 |
| Stars, last 7 days | n/a | n/a |
| Forks | 0 | 41,674 |
| Upvotes | 0 | 0 |
| Language | n/a | JavaScript |
| License | n/a | MIT |
| Last commit | n/a | 9h ago |
| Created | n/a | Jan 2026 |
| Categories | n/a | AI & LLM tooling, Memory & knowledge, Security |