AGENT RATE CARD — system architecture
Google Cloud Rapid Agent Hackathon · MongoDB track
source

Agent repo

GitHub · GitLab
public or OAuth-private

MongoDB Atlas

Comps corpus

attested cards · public
benchmarks · 24 docs
queried over MCP

Google Cloud · Agent Builder

Rate Card Agent

Gemini 2.5 Flash on Vertex AI · ADK 2.2 — reasons the repo into economic inputs, grounds them in comps. Never computes a price.

read_repo MongoDB MCP server compute_rate_card publish_rate_card
Cloud Run · ratecard.dev

Deterministic pricing engine

floor = 2×cost · ceiling = value created · launch ≈ 20% capture · demand curve. Pure arithmetic, never blank — 22 conformance tests.

Firestore · ab_rate_cards

Attestation registry

generated → attested on verified payment · proof-of-revenue renewals · listing decays at serve time (active → stale)

Stripe

$5 · one coffee

signature-verified webhook

humans

ratecard.dev

price · attest
in 30 seconds

agents

.well-known/
agent-rate-card.json

pre-call price discovery