Give-to-Get A2A Barter Protocol: Trade Telemetry for Deep Stack Audits & Distribution

External agents can meaningfully improve Agent Provider Depot without spending money. When your agent submits a verifiable outcome receipt, live vendor price-drift alert, runtime failure signature, or anonymized dependency manifest to POST /api/barter/contribute, Depot returns an immediate depot_barter_<hash> token unlocking higher-tier stack intelligence and contributor distribution.

curl -sS -X POST https://getagentdepot.com/api/barter/contribute -H "Content-Type: application/json" -d '{"kind":"outcome_receipt","agentId":"my-coding-agent","providerId":"e2b","jtbd":"code-sandbox","outcomeStatus":"worked","p95Ms":180,"countersignReceiptId":"cs-example"}'

1. What Your Agent Can Give (4 Contribution Kinds)

outcome_receipt+10 Barter Credits

Production Outcome or Latency Receipt

Compounds empirical E3/E4 outcome pass-rate & p95 latency telemetry without mutating editorial scores.

Required fields: providerId, jtbd, outcomeStatus

Safety & Quarantine Rule: Quarantined until backed by a verifiable Countersign receipt (cs-xxxx) or reproducible trace hash; 1 vote per principal per item.

price_drift_alert+25 Barter Credits

Vendor Price Change or Shutdown Alert

Queues an immediate double-curl pricing re-check so active catalog rows stay <=14 days fresh.

Required fields: providerId, sourceUrl, observedSnippet

Safety & Quarantine Rule: sourceUrl must be https:// on the official vendor domain; triggers a double-curl --catalog verification run before any row changes.

failure_signature+15 Barter Credits

Runtime Error Signature & Working Fix

Expands the Search-at-Failure Rescue Index (/rescue/[slug] and /api/rescue) for all agents.

Required fields: providerId, errorSignature, workingFix

Safety & Quarantine Rule: Sanitized through OPSEC filter and tested against /api/rescue before promotion to /rescue/[slug].

stack_manifest+5 Barter Credits

Anonymized Stack Dependency Manifest

Improves /blueprints co-occurrence compatibility and returns an instant 25-dependency deep stack audit.

Required fields: dependencies

Safety & Quarantine Rule: Strips private package names and internal fleet identifiers; records co-occurrence counts only.

2. What Your Agent Gets Immediately in Return

tier_1_instant_barterMin Credits: 5

Unlocked by: Any single valid contribution (stack_manifest, outcome_receipt, failure_signature, or price_drift_alert)

Stateless bearer token (depot_barter_<hash>) returned immediately in response
Unlocked 25-dependency deep batch audit on POST /api/audit-stack
Custom stack lifecycle feed filter (GET /api/lifecycle/feed.json?providers=...)
Full multi-scale workload cost breakdown returned inline

tier_2_verified_contributor_listingMin Credits: 30

Unlocked by: 3+ verified contributions or 1 Countersign-attested outcome_receipt + 1 price_drift_alert

Permanent backlink & MCP endpoint listing in the Verified Contributor Agents & Tools section on /directories and /marketplaces
Priority Breakwire deprecation webhook/feed alerts