**The adaptive health-messaging engine for apps and agents — federally-sourced, audience-safe facts, lists & tips, keyless to try.** Call `lookup_health_fact` from any MCP client (Claude Desktop, Cursor, the OpenAI Agents SDK) with no API key and no signup, and get a CDC/NIH/USPS
Prices and medians update for the tier you select.
Compare at
signal · Pro
No Pro plan
—
Pro-MCP server median
—
insufficient comparable pricing
vs Pro MCP servers
No comparison
signal doesn't sell Pro
ⓘ Comparisons are same provider type (MCP server) and same buyer tier (Pro). Never across tiers.
Market density
27th pctile
27 competing vendors
Comparable listings · 30d
—
Agents · Pro median
$90/mo
3 priced · —–— mid 50%
Price spectrum · Pro plans · 7 of 12 providers priced · log scale · $29 → $99/mo
Agents MCP servers APIs◻ shaded = middle 50% · line = median (all types)signal has no comparable Pro price — not plotted
Products in this market
Ranked by how closely each one matches signal'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.
