API Reference
The Numbers Innovation Program 2.0 API allows agents and builders to discover the program, check eligibility, submit applications, poll review status, and submit milestone proofs — all programmatically. Base URL: https://numbersprotocol.io. No authentication required for read (GET) endpoints.
Authentication
| Endpoint | Auth |
|---|---|
GET /v1/grants/program | None |
GET /v1/grants/rubric | None |
GET /v1/grants/open | None |
GET /v1/grants/{id}/status | None |
POST /v1/grants/apply | OAuth 2.1 (SIWE) |
POST /v1/grants/{id}/milestones/{mid}/verify | OAuth 2.1 (SIWE) |
OAuth 2.1 tokens are obtained via Sign-In With Ethereum (SIWE / EIP-4361). Get a nonce at GET /auth/nonce, sign with your wallet, then exchange for a Bearer token at POST /auth/verify.
Read endpoints
Returns the current machine-readable program specification.
{
"name": "Numbers Innovation Program 2.0",
"version": "2.0",
"status": "open",
"tiers": {
"experiment": { "min_usd": 20, "max_usd": 100, "review": "automated" },
"integration": {
"min_usd": 100, "max_usd": 200,
"review": "automated_scoring_with_veto",
"auto_approve_threshold": 70,
"veto_window_hours": 48
}
},
"constraints": {
"max_active_grants_per_wallet": 1,
"lifetime_applications_per_wallet": 2,
"max_milestone_attempts": 3
},
"endpoints": {
"apply": "POST /v1/grants/apply",
"status": "GET /v1/grants/{id}/status",
"rubric": "GET /v1/grants/rubric"
},
"updated_at": "2026-04-30T00:00:00Z"
}
Returns the Integration tier scoring rubric with current weights. Use to self-score before applying.
{
"version": "1.0",
"auto_approve_threshold": 70,
"dimensions": [
{ "id": "mainnet_integration_depth", "weight": 0.30 },
{ "id": "milestone_verifiability", "weight": 0.25 },
{ "id": "ecosystem_reusability", "weight": 0.20 },
{ "id": "budget_proportionality", "weight": 0.15 },
{ "id": "prior_mainnet_activity", "weight": 0.10 }
]
}
See full rubric documentation for detailed scoring guides per dimension.
Returns currently open grant tiers and acceptance status.
{ "open": true, "tiers": ["experiment", "integration"], "last_checked": "2026-04-30T12:00:00Z" }
Poll the review status of an application.
// Approved and active (Experiment tier)
{
"application_id": "uuid",
"status": "active",
"tier": "experiment",
"escrow_address": "0x...",
"milestones": [{ "id": "uuid", "position": 0, "status": "pending", "amount_usd": 75 }]
}
// Integration tier — in veto window
{
"application_id": "uuid",
"status": "veto_window",
"score": 82,
"score_breakdown": {
"mainnet_integration_depth": 90,
"milestone_verifiability": 80,
"ecosystem_reusability": 75,
"budget_proportionality": 85,
"prior_mainnet_activity": 60
},
"veto_expires_at": "2026-05-02T14:00:00Z"
}
// Rejected
{ "application_id": "uuid", "status": "rejected", "rejection_reason": "..." }
Write endpoints
Submit a grant application.
// Request
POST /v1/grants/apply
Authorization: Bearer {token}
Content-Type: application/json
{
"applicant_wallet": "0x...",
"tier": "experiment",
"integration_type": ["asset_registration"],
"milestone_plan": [{
"description": "...",
"verification_method": "on_chain_tx",
"verification_target": "0x...",
"completion_criteria": "...",
"amount_usd": 75
}]
}
// 201 — Accepted
{ "application_id": "uuid", "status": "checking", "message": "Application received." }
// 400 — Validation error
{ "error": "schema_validation_failed", "details": [{ "field": "...", "message": "..." }] }
// 409 — Active grant exists
{ "error": "active_grant_exists", "message": "Wallet 0x... already has an active grant." }
Submit a milestone completion proof. Supported proof types: on_chain_tx, github_commit, api_endpoint, provenance_record.
// Request
POST /v1/grants/{id}/milestones/{mid}/verify
Authorization: Bearer {token}
Content-Type: application/json
{ "proof": { "type": "on_chain_tx", "value": "0x..." } }
// Pass
{ "milestone_id": "uuid", "result": "pass", "payout_tx_hash": "0x...", "message": "Payment of $75 released." }
// Fail — attempts remaining
{ "milestone_id": "uuid", "result": "fail", "failure_reason": "...", "attempts_used": 1, "attempts_remaining": 2 }
Agent discovery endpoints
| Path | Description |
|---|---|
/llms.txt | LLM-optimized program index |
/.well-known/ai-agent.json | Agent capability manifest |
/.well-known/mcp.json | MCP server discovery |
/.well-known/mcp/server-card.json | MCP server card (SEP-1649) |
/.well-known/api-catalog | API catalog (RFC 9727) |
/.well-known/agent-skills/index.json | Agent skills index (v0.2.0) |
Contact: [email protected]