Add DJD Agent Score — reputation scoring for agent payment trust

[jacobsd32-cpu]

What this adds

A new Agent Reputation & Scoring subsection under Ecosystem & Partners → Agent Trust Rails, with an entry for DJD Agent Score.

Why it fits this list

This list covers the full agent payments stack: AP2, A2A, x402, ACP, and the trust infrastructure around them. DJD Agent Score fills the reputation layer — before an agent makes an x402 payment or AP2 mandate, it can check the counterparty's behavioral trust score.

• Scores agents 0–100 across 5 dimensions (identity, behavior, reliability, viability, capability)
• Derives scores from actual on-chain settlement history on Base
• 7 sybil detection heuristics + 5 gaming velocity detectors
• x402-native monetization, MCP server distribution
• ERC-8004 Reputation Registry compatible
• Already listed in the Coinbase x402 ecosystem and awesome-x402

Placement rationale

Added alongside Visa's Trusted Agent Protocol and Mastercard's Agent Pay under Agent Trust Rails — these handle identity/auth, DJD handles behavioral reputation. Complementary layers of the trust stack.

[tsubasakong]

Hi @jacobsd32-cpu, thanks for the detailed PR description!

Heads up — the README was just refreshed with a major 2026 landscape update (commit 3e18f30). The structure has changed significantly, so this PR now has a merge conflict and would need a rebase.

A few thoughts on this:

1. Concept is relevant — agent reputation/trust scoring is a real gap in the agentic payments stack, and the idea of complementing Visa/Mastercard identity rails with behavioral scoring makes sense conceptually.

2. Placement concern — I wouldn't put this alongside Visa Trusted Agent Protocol and Mastercard Agent Pay in the "Agent Trust Rails" section, as those are network-level standards from major card brands. A community tool like this would fit better under Developer Tools & Starters as a community-contributed project.

3. Overlap — There's another open PR (Add ScoutScore to developer tools section #3 ScoutScore) doing essentially the same thing. If we do add a community trust/scoring subsection, we'd want to think about how to handle multiple similar entries without the list becoming a listing board.

4. Maturity check needed — Can you share any adoption metrics (npm downloads, GitHub stars, active users) so we can assess whether this is ready for the list?

If you'd like to proceed, please rebase onto the latest main and target the Developer Tools section instead. Thanks! 🙏

[tsubasakong]

Hi @jacobsd32-cpu, thanks for submitting DJD Agent Score — the concept of an agent reputation scoring layer is a valuable addition to this list.

However, this PR is based on an older version of the README. The current main branch has been significantly restructured (new sections, updated layout), so this PR will have merge conflicts.

Could you please:

1. Rebase your branch onto the latest main
2. Place the entry under Ecosystem & Partners → Agent Trust Rails — the current README already has this section with Visa's Trusted Agent Protocol and Mastercard's Agent Pay. Adding a new "Agent Reputation & Scoring" subsection there would work well.

Happy to merge once updated! 🙏