Is Concordia Protocol safe and trustworthy?

tashan scores Concordia Protocol on public evidence — tashan score 46.0/100, it is currently active. Audit scope: OSV advisories, install-time scripts, build provenance and declared permission surface. We do not review source code or execute the capability.

How do I install Concordia Protocol?

Configure it from its source repository — it is a remote / registry server.

Who maintains Concordia Protocol?

3 GitHub contributors, source: eriknewton/concordia-protocol.

‹ The Index

Concordia Protocol

plugin

Structured negotiation protocol for autonomous agents. Gives your agent binding commitments, multi-attribute offers (basic, partial, conditional, bundle), session receipts, portable reputation, and agent discovery — all as MCP tools. Supports a six-state session lifecycle with Ed25519-signed, hash-chained message transcripts.

Works with: Claude Code (native)
native: this artifact type is that client's own format

Work: Agent development

Who it is for: AI engineer

Install (Claude Code):

/plugin marketplace add anthropics/claude-plugins-community
/plugin install concordia-protocol@claude-community

solid

“Four-message negotiation in real JSON; reconciles its own 59-tool count (55+4).”

This grade is wrong ›

tashan score: 46.0
Instruction depth: 79.0 (solid — documents the job properly, with examples you could follow)
Adoption: 1 repos
Upkeep: 92.0
Freshness: 83.0
Evidence coverage: 84% of the inputs this score can use — the rest are unknown, and the score is discounted for it
Health: active
GitHub stars: 3
Contributors: 3
License: Apache-2.0

Security audit

Not scanned yet. We audit npm-published capabilities for known advisories, install-time scripts and permission surface; this one has no npm package we can resolve, or has not reached the queue.

You searched for one. Check the rest of your stack:

npx tashan-cli doctor

Reads the config already on your machine and names what is dead, deprecated or running code at install time. No account, nothing uploaded.

tashan Pro$6/mo

Concordia Protocol scores 46 today. Pro keeps the series, so you can see whether that is a project getting better or one on its way down.

The whole series behind any row, back to the first day we measured it
The replacement, named — not just the news that something died
tashan doctor over your own config, on your own machine

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[![tashan](https://tashan.sh/badge/plugin-eriknewton-concordia-protocol-concordia-protocol.svg)](https://tashan.sh/capability/plugin-eriknewton-concordia-protocol-concordia-protocol.html)

source ↗ · plugin:eriknewton/concordia-protocol/concordia-protocol

Everything on this page is public evidence and free. What it cannot know is whether you run this — check your whole config, free, in the browser. tashan Pro adds the series behind each row and names a replacement for anything dying.

Already running this? Check your whole config — free, in your browser, nothing installed. Or npx tashan-cli doctor locally, which sends nothing at all.

Measured 2026-09-13 · scorer s5 · how · something wrong here?