Market around Extension Performance Facts

Open-source schema and label renderer for measuring AI agent extensions such as skills, MCP servers, instructions, custom agents, and plugins against a baseline, including quality lift, token usage, and cost.

Visit github.com ↗

Explore the market

Prices and medians update for the tier you select.

Compare at

Extension Performance Facts · Pro

No Pro plan

—

Pro-provider median

—

insufficient comparable pricing

vs Pro providers

No comparison

Extension Performance Facts doesn't sell Pro

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

Market density

16th pctile

11 competing vendors

Comparable listings · 30d

—

MCP servers · Pro median

$49/mo

3 priced · —–— mid 50%

Platforms · Pro median

$26.59/mo

3 priced · —–— mid 50%

Price spectrum · Pro plans · 8 of 11 providers priced · log scale · $5 → $250/mo

MCP servers Platforms Other◻ shaded = middle 50% · line = median (all types)Extension Performance Facts has no comparable Pro price — not plotted

Products in this market

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

OOther2Ranked by similarity

Extension Performance Factsthis listing

● OTHER

no public price

Agentevals Via Github

● OTHER70% similar

no public price

PPlatforms1Ranked by similarity

Agentsproof

● PLATFORM73% similar

$24.17/mo Pro

-9% vs Pro median

MMCP servers1Ranked by similarity

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.