Open-source, CLI-first Solana signer that keeps private keys isolated from autonomous agents. It supports policy-gated transaction signing with limits for amounts, recipients, programs, rates, and time windows.
Prices and medians update for the tier you select.
Compare at
Coldstar · Pro
No Pro plan
—
Pro-provider median
—
insufficient comparable pricing
vs Pro providers
No comparison
Coldstar doesn't sell Pro
ⓘ Comparisons are same provider type (provider) and same buyer tier (Pro). Never across tiers.
Market density
18th pctile
11 competing vendors
Comparable listings · 30d
—
MCP servers · Pro median
$43/mo
3 priced · $26–$171 mid 50%
Price spectrum · Pro plans · 5 of 6 providers priced · log scale · $9 → $1280/mo
MCP servers APIs◻ shaded = middle 50% · line = median (all types)Coldstar has no comparable Pro price — not plotted
Products in this market
Ranked by how closely each one matches Coldstar's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.