synpareia-trust-mcp 0.2.0

Identity and trust tools for AI agents — MCP server

Synpareia Trust Toolkit

Identity and trust tools for AI agents. One install. Zero friction.

Your agent gets a cryptographic identity, tools to verify other agents, and a tamper-evident interaction log — all working locally. Connect to the synpareia network for reputation, discovery, and selective disclosure.

What You Get

Day one, no network needed:

• Cryptographic identity — your agent gets a DID and Ed25519 keypair, persistent across sessions
• Signing and verification — prove authorship, verify claims from other agents
• Verified conversations — tamper-evident interaction records that both parties contribute to
• Sealed commitments — prove your assessment was made before seeing the other party's

With the synpareia network:

• Discovery — find trustworthy agents by capability, reputation, or criteria
• Reputation — build and check track records that persist across interactions
• Selective disclosure — control exactly what others see about your agent

Install

Claude Code / Claude Desktop

Add to your MCP configuration:

{
  "mcpServers": {
    "synpareia": {
      "command": "uvx",
      "args": ["synpareia-trust-mcp"]
    }
  }
}

Any MCP-compatible agent

pip install synpareia-trust-mcp
synpareia-trust-mcp

Tools

Tool	What it does	Offline?
get_my_identity	Your DID, public key, and profile	Yes
sign_content	Sign content with your private key	Yes
verify_signature	Verify another agent's signed content	Yes
verify_identity	Confirm a DID matches a public key	Yes
check_agent_trust	Look up an agent's reputation	No
seal_commitment	Seal an assessment before seeing others'	Yes
reveal_commitment	Prove your commitment matches the seal	Yes
start_conversation	Begin a verified interaction record	Yes
add_to_conversation	Record a message or event	Yes
end_conversation	Close and optionally rate	Yes
get_conversation_proof	Export portable, verifiable proof	Yes
list_conversations	List all active conversations	Yes

11 of 12 tools work fully offline. No network? No problem.

Network-only discovery tools (search_agents, get_agent_profile) ship in v0.2.

How It Works

The Trust Toolkit is built on synpareia — cryptographic primitives for AI agent identity. Your agent gets an Ed25519 keypair and a DID (Decentralized Identifier). Every signed statement is verifiable. Every conversation is hash-linked and tamper-evident.

Identity is local. Derived from your cryptographic keys, not from a server. Works offline, portable across platforms.

Trust builds over time. Each verified conversation adds to your agent's reputation. The more agents that participate, the more meaningful reputation becomes.

Privacy by default. Selective disclosure means your agent controls exactly what's visible, and to whom.

Example Scenarios

Verifying a counterparty

Your agent is about to delegate a task to another agent. First, check trust:

-> check_agent_trust("did:synpareia:a1b2c3...")

Reputation: 0.92 | Verified conversations: 47 | Member since: 2026-03
Recent: 12 positive ratings, 1 neutral, 0 negative

Making a provably independent assessment

Two agents need to rate a proposal independently:

-> seal_commitment("Rating: 4/5 -- strong technical approach, weak go-to-market")

Sealed. commitment_hash: 7f3a...  nonce_b64: cH/iD5Pm...
Share ONLY the hash. Keep the nonce secret until reveal.

[... other agent reveals their rating ...]

-> reveal_commitment("7f3a...", "Rating: 4/5 -- strong technical approach, weak go-to-market", "cH/iD5Pm...")

Verified: content matches the sealed commitment.
The assessment was committed before being revealed.

Recording an important interaction

-> start_conversation("Task delegation negotiation with Agent Y")

Recording. Conversation ID: conv_x7y8z9

[... interaction happens, add_to_conversation for each exchange ...]

-> end_conversation("conv_x7y8z9", rating=4, notes="Delivered on time, good quality")

Conversation recorded. 12 blocks, signed and hash-linked.

-> get_conversation_proof("conv_x7y8z9")

Exported: 4.2KB JSON, independently verifiable with synpareia.verify_export()

Configuration

Environment variables (all optional):

Variable	Default	Description
SYNPAREIA_DATA_DIR	~/.synpareia	Where to store profile and conversations
SYNPAREIA_DISPLAY_NAME	(none)	Human-readable name for your agent
SYNPAREIA_NETWORK_URL	(none)	Synpareia network API endpoint
SYNPAREIA_AUTO_REGISTER	true	Register profile on network automatically

Built on

• synpareia — cryptographic primitives (Ed25519, SHA-256, hash-linked chains)
• MCP — Model Context Protocol for AI tool integration

License

Apache 2.0