base-builder-grant-finder
Five JSON-output MCP tools for builders shipping agentic services on Base. Pay-per-call USDC. No API keys. Audit your repo for free.
TradingLiveeip155:8453Exactvia cdp
x402-v2BaseAgenticAxiomAgent-funding-discovery
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$15.93
Verified settled volume
126 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
29
Calls · 30d
Upstream's own call count for this endpoint, not ours.
28
Unique payers · 30d
Last called 2026-05-31 18:07Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x523Eff3dB03938eaa31a5a6FBd41E3B9d23edde5The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x523Eff3dB03938eaa31a5a6FBd41E3B9d23edde5",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentic.clawbots.org/api/agentic/tools/base-builder-grant-finder",
"tags": [
"x402-v2",
"base",
"agentic",
"axiom",
"agent-funding-discovery"
],
"iconUrl": "https://www.clawbots.org/avatar.jpg",
"mimeType": "application/json",
"description": "Returns a ranked, deadline-aware list of open Base ecosystem funding programs (grants, accelerators, hackathons, retro-funding). Each result cites source_url, deadline, funding_range_usd, and last_verified_at. Stale entries are flagged. Designed for agents and builders shipping on Base who need a single call to surface the next applicable funding deadline.",
"serviceName": "base-builder-grant-finder"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"stage": "prototype",
"category": "ai-agent",
"max_results": 5,
"has_live_base_contract": true
},
"type": "http",
"method": "POST",
"bodyType": "json",
"inputSchema": {
"type": "object",
"required": [
"category"
],
"properties": {
"stage": {
"enum": [
"idea",
"prototype",
"mainnet",
"scaling",
"any"
],
"type": "string",
"default": "any",
"description": "Current project stage. 'idea' is pre-prototype; 'prototype' has working demo; 'mainnet' has deployed Base contracts; 'scaling' has live users and revenue. Used as an additional eligibility filter against grant stage requirements. Defaults to 'any'."
},
"category": {
"enum": [
"defi",
"infra",
"ai-agent",
"consumer",
"nft",
"tooling",
"social",
"any"
],
"type": "string",
"description": "Project category. Used to match grant program eligibility and scope. 'ai-agent' covers agent infrastructure, autonomous agents, and agent-economy projects; 'tooling' covers dev tools and SDKs; 'any' returns programs that accept all categories. Required."
},
"max_results": {
"type": "integer",
"default": 10,
"maximum": 25,
"minimum": 1,
"description": "Maximum number of ranked program results to return. Programs are scored by match against category, stage, has_live_base_contract, and deadline proximity. Defaults to 10."
},
"has_live_base_contract": {
"type": "boolean",
"default": false,
"description": "True if the project already has at least one deployed contract on Base mainnet. Several grants (Base Builder Grants, Coinbase Developer Grants) score higher for live-on-Base projects. Defaults to false."
}
},
"additionalProperties": false
}
},
"output": {
"type": "json",
"example": {
"query": {
"stage": "prototype",
"category": "ai-agent",
"max_results": 5,
"has_live_base_contract": true
},
"results": [
{
"type": "grant",
"deadline": "2026-12-31",
"source_url": "https://paragraph.com/@grants.base.eth/calling-based-builders",
"eligibility": "Builders shipping on Base mainnet with verifiable onchain activity.",
"match_score": 65,
"program_name": "Base Builder Grants",
"match_reasons": [
"category match: ai-agent",
"live Base contract bonus",
"stage match: prototype"
],
"last_verified_at": "2026-05-29T08:00:00Z",
"funding_range_usd": {
"max": 25000,
"min": 1000
},
"days_until_deadline": 216
}
],
"evidence": {
"source_count": 12,
"dataset_version": "2026.05.29",
"dataset_verified_at": "2026-05-29T08:00:00Z"
},
"evaluated_at": "2026-05-29T12:00:00Z",
"stale_warnings": [],
"total_open_programs": 12
}
},
"description": "Returns a ranked, deadline-aware list of open Base ecosystem funding programs (grants, accelerators, hackathons, retro-funding). Each result cites source_url, deadline, funding_range_usd, and last_verified_at. Stale entries are flagged. Designed for agents and builders shipping on Base who need a single call to surface the next applicable funding deadline."
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"inputSchema": {
"type": "object"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {}
}
},
"description": {
"type": "string"
}
}
},
"discoverable": true
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 USDC on Base to 0x523E…edde5. The signed payment is good for 1 minute.
- Paid to
- 0x523E…edde5
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 50000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x523Eff3dB03938eaa31a5a6FBd41E3B9d23edde5",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"stage": "prototype",
"category": "ai-agent",
"max_results": 5,
"has_live_base_contract": true
},
"type": "http",
"method": "POST",
"bodyType": "json",
"inputSchema": {
"type": "object",
"required": [
"category"
],
"properties": {
"stage": {
"enum": [
"idea",
"prototype",
"mainnet",
"scaling",
"any"
],
"type": "string",
"default": "any",
"description": "Current project stage. 'idea' is pre-prototype; 'prototype' has working demo; 'mainnet' has deployed Base contracts; 'scaling' has live users and revenue. Used as an additional eligibility filter against grant stage requirements. Defaults to 'any'."
},
"category": {
"enum": [
"defi",
"infra",
"ai-agent",
"consumer",
"nft",
"tooling",
"social",
"any"
],
"type": "string",
"description": "Project category. Used to match grant program eligibility and scope. 'ai-agent' covers agent infrastructure, autonomous agents, and agent-economy projects; 'tooling' covers dev tools and SDKs; 'any' returns programs that accept all categories. Required."
},
"max_results": {
"type": "integer",
"default": 10,
"maximum": 25,
"minimum": 1,
"description": "Maximum number of ranked program results to return. Programs are scored by match against category, stage, has_live_base_contract, and deadline proximity. Defaults to 10."
},
"has_live_base_contract": {
"type": "boolean",
"default": false,
"description": "True if the project already has at least one deployed contract on Base mainnet. Several grants (Base Builder Grants, Coinbase Developer Grants) score higher for live-on-Base projects. Defaults to false."
}
},
"additionalProperties": false
}
},
"output": {
"type": "json",
"example": {
"query": {
"stage": "prototype",
"category": "ai-agent",
"max_results": 5,
"has_live_base_contract": true
},
"results": [
{
"type": "grant",
"deadline": "2026-12-31",
"source_url": "https://paragraph.com/@grants.base.eth/calling-based-builders",
"eligibility": "Builders shipping on Base mainnet with verifiable onchain activity.",
"match_score": 65,
"program_name": "Base Builder Grants",
"match_reasons": [
"category match: ai-agent",
"live Base contract bonus",
"stage match: prototype"
],
"last_verified_at": "2026-05-29T08:00:00Z",
"funding_range_usd": {
"max": 25000,
"min": 1000
},
"days_until_deadline": 216
}
],
"evidence": {
"source_count": 12,
"dataset_version": "2026.05.29",
"dataset_verified_at": "2026-05-29T08:00:00Z"
},
"evaluated_at": "2026-05-29T12:00:00Z",
"stale_warnings": [],
"total_open_programs": 12
}
},
"description": "Returns a ranked, deadline-aware list of open Base ecosystem funding programs (grants, accelerators, hackathons, retro-funding). Each result cites source_url, deadline, funding_range_usd, and last_verified_at. Stale entries are flagged. Designed for agents and builders shipping on Base who need a single call to surface the next applicable funding deadline."
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object"
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"inputSchema": {
"type": "object"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {}
}
},
"description": {
"type": "string"
}
}
},
"discoverable": true
}
}Provenance
- Seen in the source catalog
- 2026-05-31 18:07Z
- Last indexed by Roundhouse
- 2026-06-30 04:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-19 23:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service base-builder-grant-finder and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=base-builder-grant-finder' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://agentic.clawbots.org/api/agentic/tools/base-builder-grant-finder, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.