Capacity Attest runs on your own machine — the client starts it, so there is no endpoint to ping. 141 installs a week from npm. Last commit 2 Nov 2026.
Signed delivery claims for x402 capacity trades: GPU-hours, storage, API credits, bandwidth.
We read the source, 23 h ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
const match = AGENT_REGISTRY_REF_RE.exec(input.reputationRegistryRef);
const res = await fetch(`https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage`, {
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
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 capacity-attest -- npx -y capacity-attest
{
"mcpServers": {
"capacity-attest": {
"command": "npx",
"args": [
"-y",
"capacity-attest"
]
}
}
}
[mcp_servers.capacity-attest]
command = "npx"
args = ["-y", "capacity-attest"]
{
"mcpServers": {
"capacity-attest": {
"command": "npx",
"args": [
"-y",
"capacity-attest"
]
}
}
}
{
"servers": {
"capacity-attest": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"capacity-attest"
]
}
}
}
Optional settings from the registry entry, left out of the block above:
CAPACITY_ATTEST_DATA_DIR (Directory the append-only claims ledger (claims.jsonl) is written to and read from. Defaults to ./data inside the package).
MCP commerce surface for compute credits, API keys, GPU instances, and cloud storage.
Storage for AI agents: free public items, or private items paid with credits or USDC (x402).
Pay-per-call APIs for AI agents: queries, storage, ads. Billed in USDC via x402.
S3 storage and Solana/Base/Ethereum health checks for AI agents, paid per call via x402.
Free backend for apps built with Claude Code and Codex: hosting, database, storage, sign-in, AI.
Encrypted, pay-per-use persistent memory storage for AI agents, gated by x402 payments on Base.
Live truck GPS: create loads, read position, ETA, driver state, trip stats. API key or USDC x402.
Shared TODO/backlog MCP server with claim tracking, web UI, and encrypted local storage.
Answers built from our own checks of this server.