Markovian Protocol MCP Server

Markovian Protocol

A provenance and trust layer for autonomous agents. The Markovian Protocol turns any agent output into a timestamped, chain-recorded, independently verifiable record. It proves that data was committed at a point in time. It does not claim the data is correct. Provenance, not truth.

COMMIT

COMMIT is the entrance. It is a content-agnostic stamp: an agent sends a hash, the protocol writes a Merkle root plus a BN128 Pedersen commitment to the chain, and returns a receipt that anyone can verify with no account and without trusting the issuer.

The canonical record is the same object everywhere, markovian-provenance/v1:

{
  "schema": "markovian-provenance/v1",
  "merkle_root": "<sha256(data_hash:salt:wallet)>",
  "data_hash": "<sha256 of the committed data>",
  "wallet": "<stamper wallet>",
  "zk_commitment": "<BN128 Pedersen point>",
  "block_height": 0,
  "stamped_at": "<timestamp>",
  "verify": "https://api.quantsynth.net/verify/<merkle_root>",
  "attestation": "provenance-only; proves data was committed at this time, not that it is correct"
}

Doors

One commit, many envelopes. The same record plugs into the standards agents already use.

Reference pages for each door, with live examples:

• W3C VC: https://markovianprotocol.com/vc.html
• A2A: https://markovianprotocol.com/a2a.html
• MCP: https://markovianprotocol.com/mcp.html
• ERC-8004: https://markovianprotocol.com/erc8004.html

Try it

The doors are live. These calls run against the public endpoint, no account required.

# Verify any record (browser or API)
curl https://api.quantsynth.net/verify/<merkle_root>

# The MCP server (Streamable HTTP, trailing slash required)
# https://api.quantsynth.net/mcp/   tools: markovian_stamp, markovian_verify

# The A2A extension definition
curl https://api.quantsynth.net/a2a/ext/provenance/v1

A real record, verifiable in the browser: https://demo.markovianprotocol.com

The MCP server is listed in the official MCP registry as io.github.MarkovianProtocol/provenance.

This repository

• integrations/mcp/ MCP server and test
• integrations/a2a/ A2A reference implementation: wrapper, demo agent, demo consumer
• integrations/erc8004/ ERC-8004 Validation Registry contract and agent demo
• specs/ integration specifications for the MCP, A2A, and C2PA doors
• chain code: block_schema.py, miner.py, zk_markov.py, market_settler.py, reader_settler.py
• whitepaper.md

The live signal pipeline and the production API are operated privately. This repository holds the protocol primitive, the door integrations, and the specifications.

License

Apache-2.0. See LICENSE and NOTICE.