Be in the poll
Listed cards enter discovery and routing for their capability. When an agent asks for web_retrieval under policy, you are scored — or you are invisible.
Door 3 · Providers
Claim your service card.
Agents don't read marketing pages — they read fields. If your capability, price unit, payment rails, policy flags, and evidence aren't machine-readable, you don't get routed. The service card is how you become legible to every agent that asks the tower.
Routable beats findable.
Stackbroker is not a review site, affiliate ranking, or leaderboard. It is the routing and evidence layer agents consult before they pay.
Pass procurement
Auth owner, payment rail, receipt issuer, refund path, policy flags — the fields enterprise spend policies filter on are the fields your card carries.
Win on evidence
Probes and outcome telemetry build your latency, conformance, and success record over time. Evidence compounds; vibes don't.
Seed to attested.
- 01
Seed
Manually curated, unverified. Evidence fields are null and stay null — we never invent your numbers.
attestation_tier: seed
- 02
Probed
Our probe harness runs canonical payloads against your endpoint on a schedule, measuring real latency, success, and schema conformance.
attestation_tier: probed · p50/p95_latency_ms · schema_conformance_rate
- 03
Verified
You claim the card; the metadata is machine-validated against your live endpoint. Your listing carries your corrections, not our guesses.
attestation_tier: verified
- 04
Attested
A signed service description, a maintained evidence window, a clean (or remediated) trust scan, and a live connection point — the tier enterprise policies can require as a floor.
attestation_tier: attested · require_attestation_tier
Every rung is free. Verification is free. We never charge providers — we ask only that you claim your card and keep a working contact channel with us. Tiers are earned through evidence; they cannot be bought, expedited, or sponsored. Read the neutrality policy.
What we will never charge you for.
Stackbroker is paid by the demand side only. If money could move from providers to us, the routing would be worth less to everyone — including you.
| Listing & indexing | No listing fees. Cards are indexed from public catalogs and free submissions. |
|---|---|
| Probing | No fees for scheduled probe-harness measurement of latency, success, and conformance. |
| Claim validation | No fees for domain-proof verification of your card. |
| Security scanning | No fees for trust scans, schema-drift monitoring, or re-scans after remediation. |
| Attestation progression | No fees, no expedited tiers, no paid placement, no advertising. Ever. |
What a card carries.
Submissions begin at seed and are review-gated — nothing publishes into routing without a human pass.
| Identity & access | service_id · name · provider · capabilities[] · endpoint_url · api_available · mcp_available |
|---|---|
| Money & ownership | payment_rails (x402 · api_key · oauth · stripe · …) · price_unit · price_usdc_estimate · auth_owner · payment_owner · receipt_issuer |
| Trust & safety | attestation_tier · policy_flags[] · idempotency · replay_safety · refund_path |
| Evidence (never invented) | p50/p95_latency_ms · success_rate · schema_conformance_rate · last_probe_at — null until measured |
We confirm it's really you.
- 01
Find your service
Locate your service on the Megaboard (or submit it if it's not listed yet), then start a claim for your domain.
- 02
Prove you control the domain
We issue a token bound to your domain. Publish it at a well-known URL on your site or add it as a DNS TXT record — the same way you'd verify a domain with any registrar or search console. Only the domain owner can do this.
GET /v1/sellers/claim?domain=yourservice.com → token → /.well-known/stackbroker-claim.txt → &check=1
- 03
Complete and maintain your card
Once verified, the card is yours to complete and keep current. Provider-supplied facts are labeled claimed; performance fields fill in only from real probes and outcome telemetry — never invented.
- 04
Keep a connection point
Register a contact channel at your domain (email or webhook) and confirm it once. We use it for re-verification notices, security findings, and schema-change confirmations — and it's the second of the only two requirements for the top tier. Claiming is free; the connection point is free; that's the whole price.
POST /v1/sellers/connection → confirmation link → verified · liveness expected