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Market around AppendOnly

An on-premises audit and evidence system for AI agents that records tool calls, verifies agent claims, detects changes, and preserves signed, tamper-resistant work history for regulated teams.

Visit appendonly.ai ↗Pricing page ↗

Explore the market

Prices and medians update for the tier you select.

Compare at
AppendOnly · Pro
No Pro plan
—
Pro-agent median
—
insufficient comparable pricing
vs Pro agents
No comparison
AppendOnly doesn't sell Pro
ⓘ Comparisons are same provider type (agent) and same buyer tier (Pro). Never across tiers.
Market density
79th pctile
733 competing vendors
Comparable listings · 30d
—
Price spectrum · Pro plans · 3 of 6 providers priced · log scale · $49 → $399/mo
MCP servers Platforms◻ shaded = middle 50% · line = median (all types)AppendOnly has no comparable Pro price — not plotted

Products in this market

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

AAgents5Ranked by similarity
AppendOnlythis listing
● AGENT
no public price
Agent Blackbox
● AGENT81% similar
no public price
Self-Auditing Agent
● AGENT81% similar
no public price
Agentmetry 2
● AGENT77% similar
no public price
AgentProof
● AGENT77% similar
no Pro plan
entry $2500/mo
MMCP servers20Ranked by similarity
WO
World Model
● MCP86% similar
no public price
AgentLog MCP
● MCP84% similar
no public price
Lexprotocol
● MCP82% similar
no public price
Actionlog
● MCP82% similar
no public price
Agent Receipts
● MCP82% similar
no public price
CCS Runtime Evidence MCP Server
● MCP81% similar
no public price
Mifori CertAgent
● MCP80% similar
no public price
verified-rec
● MCP80% similar
no public price
LoopGrid MCP Server
● MCP79% similar
no public price
Fresh402
● MCP79% similar
no public price
Evidence-MCP
● MCP78% similar
no public price
Vaara
● MCP78% similar
no public price
The Nervous System
● MCP78% similar
no public price
QED Proof MCP
● MCP78% similar
no public price
mcpcut
● MCP78% similar
no public price
TamperAudit
● MCP78% similar
$399/mo Pro
CoreXense-N
● MCP78% similar
no public price
Rea
● MCP77% similar
no public price
SWAY_IR_Tools
● MCP77% similar
no public price
Hallucc
● MCP77% similar
$49/mo Pro
AAPIs2Ranked by similarity
Touchstone
● API84% similar
no public price
Tenbri
● API79% similar
no public price
PPlatforms12Ranked by similarity
Agnys
● PLATFORM82% similar
no Pro plan
entry $49/mo
ProofChain
● PLATFORM80% similar
no public price
APIR
● PLATFORM80% similar
no public price
Agent Control
● PLATFORM79% similar
$49/mo Pro
AgentBlackBox
● PLATFORM79% similar
no public price
OpenGlass
● PLATFORM79% similar
no public price
Traccia
● PLATFORM78% similar
no Pro plan
entry $299/mo
Arbitra
● PLATFORM78% similar
no public price
Centian
● PLATFORM78% similar
no public price
Tessary
● PLATFORM77% similar
no public price
ProofVisor
● PLATFORM77% similar
no public price
Aming Claw
● PLATFORM77% similar
no public price
OOther8Ranked by similarity
PandaX
● OTHER82% similar
no public price
Mnestiq
● OTHER81% similar
no public price
Deedglass
● OTHER81% similar
no public price
Aileron
● OTHER80% similar
no public price
signafAIde SDK
● OTHER79% similar
no public price
Lotor
● OTHER79% similar
no public price
wakeprint
● OTHER78% similar
no public price
pod
● OTHER78% similar
no public price
FFrameworks3Ranked by similarity
Capability Host Protocol
● FRAMEWORK78% similar
no public price
Signet
● FRAMEWORK77% similar
no public price
Sevenbox
● FRAMEWORK77% 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.