Lossless Context MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 70 installs a week from npm. Last commit 5 Sep 2026.
Agent context flight recorder: restore after compaction, fan-out packs, signed git-bound receipts.
Today is the operative word: we check Lossless Context MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add lossless-context-mcp -- npx -y lossless-context-mcp
{
"mcpServers": {
"lossless-context-mcp": {
"command": "npx",
"args": [
"-y",
"lossless-context-mcp"
]
}
}
}
[mcp_servers.lossless-context-mcp]
command = "npx"
args = ["-y", "lossless-context-mcp"]
{
"mcpServers": {
"lossless-context-mcp": {
"command": "npx",
"args": [
"-y",
"lossless-context-mcp"
]
}
}
}
{
"servers": {
"lossless-context-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"lossless-context-mcp"
]
}
}
}
Verify agent actions against the system of record and get signed completion receipts.
The record layer for the machine age: counter-signed receipts and agent action records.
Owner-signed permissions for AI agent actions; ALLOW/BLOCK/REVIEW with request-bound receipts.
Portable signed records for agent, API, MCP, and cross-runtime interactions.
Resolve sourced merchant facts and safe actions before an agent acts.
Signed, hash-chained provenance receipts for AI agent actions.
Score documents and check agent work — signed PactCheck Receipts: proof-of-review for agents.
Trust checks for agent-to-agent deals. Identity, co-signed receipts, paid trust scores, and badges.
Answers built from our own checks of this server.