Concordia
A library for generative social simulation
Is Concordia safe? Promising trust profile, but some evidence still deserves review.
Compare Concordia
How does it stack up against its Multi-Agent Systems neighbours?
Pick any agent to compare →In detail: Concordia scores 67.4/100 (Grade B), ranked #431 of 1378 tracked open-source AI agent projects, on evidence coverage B (3 of 5 independent signal types). The public evidence: no package-provenance attestation found; OSSF Scorecard rates its supply-chain practices 7.8/10; 5% of recent commits are signed; no published advisory affects its latest release (gdm-concordia); last pushed 2026-10-16. Every point is earned from checkable signals — never paid placement. How scoring works →
How Concordia could raise its score
Each line changes one public signal and recomputes with the live scoring function. The gains don't add up exactly, because the score is capped near the top.
- Publish build provenance for its packagesPyPI Trusted Publishing attestations +14.5 → 81.9 A · #3 of 43
- Sign every commit5% signed today +4.8 → 72.2 B · #4 of 43
- Raise the OSSF Scorecard from 7.8 to 9.0lowest checks: CII-Best-Practices 0, Fuzzing 0, Branch-Protection 3 +2.5 → 69.9 B · #4 of 43
Chain of custody
Scanners check what the code says. This traces who ships Concordia and whether that has changed: from the source repository, through how changes are reviewed and released, to the package you install. These are the checks for OWASP ASI04 Agentic Supply Chain Vulnerabilities.
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Source Partly signed
github.com/google-deepmind/concordia, Apache-2.0, last pushed 2026-10-16. 5% of the last 100 commits carry a verified signature; the rest can't be tied to a verified identity.
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Review and release Strong
OpenSSF Scorecard rates the repository's practices 7.8/10 (scanned Oct 17, 2026). The checks that decide who can get a change released:
- Code Review8
- Branch Protection3
- Signed Releasesn/a
- Dangerous Workflow10
- Token Permissions10
- Pinned Dependencies4
All 14 Scorecard checks
Binary-Artifacts 10Branch-Protection 3CII-Best-Practices 0Code-Review 8Dangerous-Workflow 10Fuzzing 0License 10Maintained 10Packaging 10Pinned-Dependencies 4SAST 10Security-Policy 10Signed-Releases -1Token-Permissions 10 -
Published packages Linked, not attested
- PyPI gdm-concordia Source link points back to this repo No build attestation
Without a build attestation, nothing proves the published files were built from this repository.
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What you install today No known advisories
Latest release checked: gdm-concordia 2.4.0. No published advisory affects it (OSV, checked 2026-10-17).
Changes to this chain
No change to package provenance, package source links, Scorecard coverage or license in HVTracker's daily snapshots of Concordia.
Evidence behind this score
Coverage B: 3 of 5 independent evidence types found.
- GitHub repository data
- Package downloads
- Supply-chain checks
- Public actions (missing)
- Community mentions (missing)
Verify this score yourself
Every build re-issues Concordia’s score as an Ed25519-signed credential, valid for 7 days. You can check it offline against HVTracker’s published key; if anyone changes a number after signing, verification fails.
What this score doesn’t check
It covers who ships the code, not what the code does. It doesn’t read tool descriptions or prompts for injected instructions, watch runtime behaviour, or find bugs nobody has disclosed yet. For that, run a content scanner before you connect it, such as Cisco MCP Scanner or Snyk Agent Scan.
How Concordia compares in Multi-Agent Systems
- #4 Solace Agent Mesh 69.1 +1.7
- #5 Agency Swarm 67.8 +0.4
- #6 Concordia 67.4 this agent
- #7 TradingAgents 66.0 −1.4
- #8 agent-swarm 65.9 −1.5
Bars show each HVTrust score; the tick marks Concordia’s 67.4.
Where the 67.4 comes from
HVTrust dimensions vs the Multi-Agent Systems average
67.4 / 100 · 100.0% confidenceConcordia Multi-Agent Systems average (43 agents)
Quick Trust Read
How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption. Grade B reflects the trust score band: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Evidence coverage B is separate — it grades how many independent signal types back the score (3 of 5), so a high score on thin evidence stays visible. Full methodology →
Rank Trend
Activity & Reach
Analysis
Activity Inputs
77.2 / 100Common questions about Concordia
Does Concordia publish package provenance?
Does Concordia have an OpenSSF Scorecard?
Is Concordia actively maintained?
What license does Concordia use?
Are Concordia's commits signed?
Not a safety endorsement. HVTracker describes what public signals show, not whether a project is safe for your use case. Run your own security review before adopting in production.
Compare Concordia head-to-head
AI agent surface
MCP, providers, tool surface
These runtime-trust fields — detected from public repo docs and manifests — contribute a bounded adjustment to this project's HVTrust score alongside supply-chain evidence. The exact values each field can add or subtract are documented in the methodology → Compare this surface across every listed agent in the capability matrix →
- shell
- MCP signal live
- External deps live
- Tool / plugin surface live
- Package provenance drift live
Maintain Concordia?
For maintainers
HVTrust scores Concordia from public signals only — we never contact maintainers first. If a signal is wrong, stale, or missing (provenance you publish, a Scorecard you run, signed releases), tell us and we'll review it. Corrections are public and tracked on GitHub.
Reputation Timeline
Signal history
Embed Badge Badge guide for maintainers →
For maintainers
[](https://hvtracker.net/agents/concordia)
<a href="https://hvtracker.net/agents/concordia"><img src="https://hvtracker.net/badge/concordia.svg" alt="HVTrust"></a>
Other agents in Multi-Agent Systems
GitHub REST API (repo, commits, stars, forks, license) · PyPI / pypistats (downloads, provenance) · OpenSSF Scorecard CLI
Each agent's signals refresh once daily across 6 staggered batches. Methodology v4.4 · Raw JSON