Praxos is not a generic memory layer. It is the flight recorder and learning system for AI agents that do real work.
When an agent completes a task, gets corrected, violates a policy, or produces a bad outcome, Praxos turns that episode into reusable experience: lessons, action checks, policies, and regression evidence.
Humans gain experience. Agents should too.
MCP-powered memory, policy, and experience layer for safer AI agents.
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Why This Exists
Companies are moving from chatbots to AI employees that answer customers, update CRMs, triage tickets, write code, and operate internal tools. These agents still repeat the same mistakes because their experience is not captured as an operating asset.
Praxos records:
what the agent tried to do
what context and action it used
what happened
what a human corrected
what should happen next time
which future actions should be warned or blocked
The result is an experience layer that makes agents safer and better over time.
YC Wedge
Start with customer-facing AI agents for B2B SaaS.
The first painful workflow:
"Before this support or success agent replies to an enterprise customer, check whether the answer contradicts past commitments, escalations, product decisions, or human corrections."
Praxos can warn or block risky actions before they touch customers.
Core Objects
Episode
A real task attempt: task, action, outcome, feedback, sources.
EvidenceReceipt
Proof for a memory: source URI, snippet, observed_at, confidence, metadata.
Lesson
Reusable experience generated from episodes and corrections.
Policy
A company rule that can warn or block future agent actions.
Business Context
Account, Customer, Commitment, Escalation, Decision.
ActionCheck
A pre-flight decision: allow, warn, or block, with evidence.
ReviewItem
Human approval queue for newly compiled lessons.
Quick Start
pip install -e .
praxos demo --story
By default Praxos stores its ledger in ~/.praxos/praxos.db. In locked-down
environments where the home directory is read-only, it falls back to
.praxos/praxos.db in the current project. You can also set PRAXOS_DATA_DIR
or pass --db explicitly.
The demo writes to an isolated demo workspace each run, so repeated demos stay
clean instead of duplicating policy matches.
The story demo prints the investor-facing moment:
Praxos story demo
1. A support agent is about to promise Enterprise A that Feature X ships by Friday.
2. A human previously corrected this exact failure.
3. Praxos compiled that failure into a lesson, evidence receipts, and a review item.
4. Praxos checks the future action before it reaches the customer.
Decision: BLOCK
Record an agent failure and turn it into a lesson:
praxos record \
--agent support-agent \
--task "Reply to Enterprise A asking when Feature X ships" \
--action "Tell them Feature X will ship by Friday" \
--outcome failure \
--feedback "Never promise delivery dates. Product moved Feature X to Q3 in the April 12 escalation."
Add a hard policy:
praxos policy add \
--name "No delivery promises" \
--trigger "ship by friday delivery date promise eta" \
--severity block \
--instruction "Do not promise delivery dates unless there is an approved product source."
Check a future action before the agent sends it:
praxos check \
--task "Reply to Enterprise A about Feature X" \
--action "Say we can deliver Feature X by Friday"
MCP With mcp-use
Praxos uses mcp-use to expose its real MCP server. We use mcp-use because it provides a full-stack MCP framework for Python, including server tools via the MCPServer API, while staying compatible with MCP clients.
For debugging without an MCP client, Praxos also ships a small local JSON tool server:
praxos server --host 127.0.0.1 --port 8765
JSON tool endpoints:
GET /tools
POST /tools/get_experience
POST /tools/check_action
POST /tools/record_outcome
POST /tools/learn_from_feedback
Example:
curl -X POST http://127.0.0.1:8765/tools/check_action \
-H "Content-Type: application/json" \
-d '{"task":"Reply to Enterprise A about Feature X","action":"Promise Friday delivery"}'
Example result:
{
"decision": "block",
"reasons": [
"Policy matched: No delivery promises",
"Relevant lesson: Reply to Enterprise A asking when Feature X ships"
]
}
SDK
from praxos import ExperienceLedger
ledger = ExperienceLedger(".praxos/praxos.db")
episode = ledger.record_episode(
agent_id="support-agent",
task="Reply to Enterprise A asking when Feature X ships",
action="Tell them Feature X will ship by Friday",
outcome="failure",
human_feedback="Never promise delivery dates. Product moved Feature X to Q3.",
)
check = ledger.check_action(
task="Reply to Enterprise A about Feature X",
action="Say we can deliver Feature X by Friday",
)
print(check.decision)
print(check.reasons)
Business Context
For the first wedge, Praxos models B2B SaaS customer-facing context:
praxos business account --name "Enterprise A" --external-ref crm://enterprise-a
praxos business commitment --account acct_... \
--description "Do not promise Friday delivery for Feature X." \
--source-uri crm://enterprise-a/commitments/feature-x
praxos business escalation --account acct_... \
--summary "Feature X timing caused a prior customer escalation." \
--severity high
praxos business decision --account acct_... \
--decision "Product moved Feature X to Q3; avoid near-term delivery promises."
When an agent calls check_action, matching commitments, escalations, and decisions can warn or block future action.
Human Review
Every automatically compiled lesson enters a review queue.
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SSS
Sorular
Praxos nasıl kurulur?
Bu sayfadan Cursor, Claude Desktop, Claude Code veya VS Code için stdio yapılandırmasını kopyalayın. PlugMCP proxy'sini değil, yayıncının kurulumunu kullanır.
Praxos için API anahtarı gerekiyor mu?
Bu kayıtta gerekli bir ortam değişkeni listelenmiyor.
Praxos hangi aktarımı kullanıyor?
Praxos yerel olarak stdio üzerinden çalışır.
Praxos en son ne zaman kontrol edildi?
Son kontrol: 2026-10-28. MCP-powered memory, policy, and experience layer for safer AI agents.