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Market around deja

Open-source record/replay testing tool for MCP sessions. Captures stdio or HTTP traffic as JSONL cassettes, then replays requests with tiered matching for non-deterministic AI agent clients. Includes TypeScript and Java integrations.

Visit github.com ↗Pricing page ↗

Explore the market

Prices and medians update for the tier you select.

Compare at
deja · Pro
No Pro plan
—
Pro-provider median
—
insufficient comparable pricing
vs Pro providers
No comparison
deja doesn't sell Pro
ⓘ Comparisons are same provider type (provider) and same buyer tier (Pro). Never across tiers.
Market density
86th pctile
782 competing vendors
Comparable listings · 30d
—
Price spectrum · Pro plans · 3 of 5 providers priced · log scale · $20 → $199/mo
MCP servers Platforms◻ shaded = middle 50% · line = median (all types)deja has no comparable Pro price — not plotted

Products in this market

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

OOther15Ranked by similarity
dejathis listing
● OTHER
no public price
mcp-conform
● OTHER80% similar
no public price
mcp-flightcheck
● OTHER79% similar
no public price
MCP Reality Check
● OTHER79% similar
no public price
MC
mcp-proof
● OTHER78% similar
no public price
sabrix-bench
● OTHER78% similar
no public price
Bad
● OTHER78% similar
no public price
Mcp Debug Proxy
● OTHER77% similar
no public price
Aileron
● OTHER77% similar
no public price
mcp-defense-bench (Python)
● OTHER76% similar
no public price
Maverik
● OTHER76% similar
no public price
MCP Compatibility Check
● OTHER75% similar
no public price
Entro Mcp Audit
● OTHER75% similar
no public price
Mcp Inspector 2
● OTHER75% similar
no public price
MCP Master Tester
● OTHER75% similar
no public price
MMCP servers24Ranked by similarity
Wondersuite
● MCP81% similar
no public price
MCP Test Kitchen
● MCP80% similar
no public price
Flowlines
● MCP78% similar
$199/mo Pro
SaSame Research
● MCP77% similar
no public price
yatt-ts
● MCP77% similar
no public price
Packet Chef MCP
● MCP76% similar
no public price
Mcp File Operations
● MCP76% similar
no public price
Agent Firewall
● MCP76% similar
no public price
Iron AI Pentest MCP Server
● MCP76% similar
no public price
DMR MCP Test
● MCP76% similar
no public price
MCP Node Zig
● MCP76% similar
no public price
Lodd Analytics
● MCP76% similar
no Pro plan
entry $11/mo
AG
Agent Verified Relay
● MCP76% similar
no public price
Vee3
● MCP76% similar
$20/mo Pro
Toolhail
● MCP75% similar
no public price
Jev Observatory
● MCP75% similar
no public price
DO
dominion-observatory
● MCP75% similar
$29 one-time Pro
not monthly-comparable
Mxlore
● MCP75% similar
no public price
Workspace Tools (MCP)
● MCP75% similar
no public price
Hackmyip
● MCP75% similar
no public price
Agent Observability
● MCP75% similar
no public price
Tensorfire
● MCP75% similar
no public price
Yorishiro Proxy
● MCP75% similar
no public price
reqtest-mcp
● MCP75% similar
no public price
PPlatforms5Ranked by similarity
Mcpjam
● PLATFORM79% similar
$24/mo Pro
Mcp Playground 2
● PLATFORM78% similar
no public price
Consumer Agent Testing Tool
● PLATFORM77% similar
no public price
Pyntra
● PLATFORM76% similar
no public price
Spirit Room
● PLATFORM75% similar
no public price
FFrameworks2Ranked by similarity
faultbench
● FRAMEWORK76% similar
no public price
Red Team Blue Team Agent
● FRAMEWORK76% similar
no public price
AAgents4Ranked by similarity
Vulnclaw
● AGENT76% similar
no public price
fixmcp
● AGENT75% similar
no public price
Toolward
● AGENT75% similar
no public price
Authprobe
● AGENT75% 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.