Market around Carl

An open-source MCP-oriented tool that helps AI agents search, collect, compare, and evaluate used items on Facebook Marketplace, preserving listings, photos, research, sources, and decisions for later review.

Visit github.com ↗

Explore the market

Prices and medians update for the tier you select.

Compare at

Carl · Pro

No Pro plan

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Pro-provider median

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insufficient comparable pricing

vs Pro providers

No comparison

Carl doesn't sell Pro

ⓘ Comparisons are same provider type (provider) and same buyer tier (Pro). Never across tiers.

Market density

23rd pctile

19 competing vendors

Comparable listings · 30d

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Agents · Pro median

$74.5/mo

4 priced · $46.75–$137 mid 50%

MCP servers · Pro median

$29/mo

15 priced · $15–$44 mid 50%

Agents cost 2.6× MCP servers at the Pro tier.

Price spectrum · Pro plans · 12 of 18 providers priced · log scale · $5 → $249/mo

Agents MCP servers◻ shaded = middle 50% · line = median (all types)Carl has no comparable Pro price — not plotted

Products in this market

Ranked by how closely each one matches Carl's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.

OOther1Ranked by similarity

Carlthis listing

● OTHER

no public price

MMCP servers7Ranked by similarity

jlsookiki_secondhand_mcp

AAgents1Ranked by similarity

AI E-Commerce Shopping Assistant

● AGENT72% similar

no public price

PPlatforms1Ranked by similarity

ecommerce AI Tools

● PLATFORM71% similar

no public price

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.