Pricing
Simple, transparent pricing for market status verification.
Sandbox
forever free
Demo endpoint, no key needed
- ✓ /v5/demo endpoint
- ✓ All 28 exchanges
- ✓ Ed25519 signed receipts
- ✓ No auth required
Free Tier
/month
Get started instantly, no credit card needed
- ✓ 500 API calls/day
- ✓ All 28 exchanges
- ✓ Ed25519 signed receipts
- ✓ Instant provisioning
Pay-per-use
/request
0.001 USDC on Base mainnet — no subscription required
- ✓ No API key required
- ✓ All 28 exchanges
- ✓ Ed25519 signed receipts
- ✓ HTTP 402 machine-readable
Credits
one-time
1,000 API calls, no expiry
- ✓ 1,000 API calls
- ✓ All 28 exchanges
- ✓ No expiry date
- ✓ Pay via card
Builder
/month
- ✓ 50,000 API calls/day
- ✓ All 28 exchanges
- ✓ Webhook subscriptions
- ✓ Receipt audit log
Pro
/month
- ✓ 200,000 API calls/day
- ✓ All 28 exchanges
- ✓ 25 webhook subscriptions
- ✓ Priority support
Protocol / Enterprise
Unlimited calls, custom SLA, dedicated support, direct engineering access.
Starting at $500/month. Best for DeFi protocols, RWA platforms, institutional trading.
Get your API key instantly
Click the button below. No email, no signup, no credit card. Your key appears in seconds.
Quick test:
Prefer the raw curl? curl -X POST https://headlessoracle.com/v5/keys/instant -H "Content-Type: application/json" -d '{"agent_id":"my-trading-bot"}'
All plans include
All tiers are live. x402 micropayments available now.
Try the API now — no signup needed.
Conformance, disputes and evidence custody
Paid referee work against the published methodology: a graded conformance run, a re-grade after you change your implementation, a dispute package, and custody of the pinned evidence.
Introductory pricing — held until 31 December 2026.
The neutrality rule
A paid entry buys the run and the published record, never the verdict. Every entry carries an Interests section: the referee is the author of a competing format; independence is not claimed; recomputability from pinned bytes is claimed; the text and the implementation are scored separately; a finding stands until its author corrects the record, and the correction is published beside it. Verification of any receipt is free, always.
Conformance entry
one-time
Introductory until 31 December 2026
One implementation graded against the published methodology. The run and the record are published.
Re-grade
one-time
Introductory until 31 December 2026
A fresh run of an entry already on the register, after its implementation changed. The correction is published beside the original.
Dispute package
one-time
Introductory until 31 December 2026
The pinned bytes, the recomputation steps and the finding, packaged so a third party can reproduce the result themselves.
Dispute package with verification note
one-time
Introductory until 31 December 2026
The dispute package, plus a written note recording what was recomputed, what it establishes and what it does not.
Evidence custody 90 days
/month
Introductory until 31 December 2026
The pinned bytes behind your entry held and retrievable for a rolling 90 days.
Evidence custody one year
/month
Introductory until 31 December 2026
The pinned bytes behind your entry held and retrievable for a rolling twelve months.
Annual programmes
Two annual programmes exist, at $60,000 a year and $150,000 a year. Neither is bought from this page: both are by invoice after a conversation. Start with the intake form below and say which programme you are asking about.
Go to the intake form →Conformance intake
Submit an implementation for a conformance run. You receive an intake id; the entry is not scheduled until the entry fee is paid.
Posts to POST https://headlessoracle.com/v5/referee/intake