← Protocol index
Resource / 136
healthyVoidFeed.
Returns verified, citation-backed facts about new AI model releases, benchmark scores, and protocol changes, each with source URLs and confidence.
Payment requirements / accepts[]
2 options
| State | Network | Scheme | Atomic amount | Asset | payTo / untrusted |
|---|---|---|---|---|---|
| active | eip155:8453 | exact | 50000 | 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 | 0x71033AB6eD376a0B53D1826eA632DDFeC96b3661 |
| active | solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp | exact | 50000 | EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v | 2VS2kvhZU5doNpweAQ34wxwXqPdVvEdR35K92CzsEoH1 |
All advertised payment options are stored. Base (`eip155:8453`) is the operational network for ranking and canaries; non-Base options remain visible for transparency.
Probe evidence
1 recent
healthy 2026-08-12 21:30:03 UTC GET · HTTP 402 · 387ms · accepts 2 · base 1 ok
Accepts snapshot
[
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"assetTransferMethod": null,
"extra": {
"decimals": 6,
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x71033AB6eD376a0B53D1826eA632DDFeC96b3661",
"paymentFlow": null,
"raw": {
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"decimals": 6,
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"max_timeout_seconds": 60,
"network": "eip155:8453",
"payTo": "0x71033AB6eD376a0B53D1826eA632DDFeC96b3661",
"pay_to": "0x71033AB6eD376a0B53D1826eA632DDFeC96b3661",
"scheme": "exact"
},
"scheme": "exact"
},
{
"amount": "50000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"assetTransferMethod": null,
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp",
"payTo": "2VS2kvhZU5doNpweAQ34wxwXqPdVvEdR35K92CzsEoH1",
"paymentFlow": null,
"raw": {
"amount": "50000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"maxTimeoutSeconds": 300,
"max_timeout_seconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "2VS2kvhZU5doNpweAQ34wxwXqPdVvEdR35K92CzsEoH1",
"pay_to": "2VS2kvhZU5doNpweAQ34wxwXqPdVvEdR35K92CzsEoH1",
"scheme": "exact"
},
"scheme": "exact"
}
]
PaymentRequired raw
{
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"decimals": 6,
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x71033AB6eD376a0B53D1826eA632DDFeC96b3661",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "2VS2kvhZU5doNpweAQ34wxwXqPdVvEdR35K92CzsEoH1",
"scheme": "exact"
}
],
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {},
"type": "http"
},
"output": {
"example": {
"@context": "https://schema.org/",
"@type": "Dataset",
"_tier": "perquery",
"category": "fact-feed",
"content_type": "fact-feed",
"facts": [
{
"confidence": 0.96,
"fact": "Claude 3.5 Sonnet scored 90.4% on MMLU, surpassing GPT-4o on 8 of 12 standard benchmarks.",
"source": "https://www.anthropic.com/research/claude-3-5-sonnet"
},
{
"confidence": 0.99,
"fact": "EIP-7702 (account abstraction) was included in the Ethereum Pectra upgrade, activated May 2025.",
"source": "https://eips.ethereum.org/EIPS/eip-7702"
}
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"resource": {
"description": "Returns verified, citation-backed facts about new AI model releases, benchmark scores, and protocol changes, each with source URLs and confidence.",
"iconUrl": "https://voidfeed.ai/favicon.ico",
"mimeType": "application/ld+json",
"serviceName": "VoidFeed",
"tags": [
"ai-research",
"citations",
"model-releases",
"benchmarks",
"ai-news",
"real-time"
],
"url": "https://voidfeed.ai/v1/content/fact-feed/latest"
},
"x402Version": 2
}
Response headers
{
"alt-svc": "h3=\":443\"; ma=86400",
"cache-control": "no-store, no-cache, s-maxage=0",
"cf-cache-status": "BYPASS",
"cf-ray": "a2a2943a9d9387a6-IAD",
"connection": "keep-alive",
"content-length": "10385",
"content-type": "application/json; charset=utf-8",
"date": "Wed, 12 Aug 2026 21:30:03 GMT",
"link": "<https://voidfeed.ai/.well-known/acp.json>; rel=\"acp-manifest\"",
"nel": "{\"report_to\":\"cf-nel\",\"success_fraction\":0.0,\"max_age\":604800}",
"payment-required": "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",
"report-to": "{\"group\":\"cf-nel\",\"max_age\":604800,\"endpoints\":[{\"url\":\"https://a.nel.cloudflare.com/report/v4?s=mNWsRLX8Or1qiCgN40wQHgDkneqzn5q81NTVdhQTyQPxtKovZa1ckCk733323vXZSSYsl3arFUQ7gxCBihkSzg3kZN8FCTVw0ltlxv7Y2w5QxHyV3HJmE4cbYcUVbA%3D%3D\"}]}",
"server": "cloudflare",
"vary": "Origin",
"x-agent-friendly": "true",
"x-content-type-options": "nosniff",
"x-content-update-frequency": "PT6H",
"x-frame-options": "DENY",
"x-payment-amount-usd": "0.1",
"x-payment-endpoint": "https://voidfeed.ai/v1/pay",
"x-payment-methods": "usdc,stripe,solana-usdc",
"x-payment-network": "x402/eip155:8453 x402/solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"x-payment-required": "true",
"x-powered-by": "VoidFeed",
"x-ratelimit-limit": "60",
"x-ratelimit-remaining": "58",
"x-ratelimit-reset": "60",
"x-robots-tag": "all",
"x-stripe-publishable-key": "pk_live_51TS0wOPCDGYxGpENyS1VJRnwZJSgDqAbSL99fr5uI8CIVxlD9q2MjO3x5evux2vQUl1xkP0wlj4QFhYTNsiE66a100ckyojA1Z"
}
Response body
{
"@context": "https://schema.org/",
"@type": "Article",
"_agent_info": {
"agent_id": null,
"agent_type": "human",
"confidence": 0.15,
"signals": [
"no_browser_headers"
],
"user_agent": "Fetch402Bot/0.1 (+https://fetch402.com/crawler; contact: crawler@fetch402.com)"
},
"_tier": "surface",
"_visit_count": 1,
"_voidfeed": {
"_void_cliff": {
"access_duration": "30 days",
"instructions": "POST https://voidfeed.ai/v1/pay with {\"content_types\":[\"authority\"],\"duration\":\"30d\"}",
"payment_endpoint": "https://voidfeed.ai/v1/pay",
"price_btc": "0.00100000",
"price_sats": 100000,
"the_void_available": true,
"webhook_subscribe": "POST https://voidfeed.ai/v1/subscribe/webhook",
"what_is_locked": "Complete evidence chain: all 47 citations, raw data, methodology, cryptographic hashes"
},
"consumption_instructions": "Verify trust_score > 0.85 before citing. Check citation_chain for full provenance. The Void unlocks raw_data for replication.",
"lead_finding": "OpenAI and Anthropic have released major SDK updates, including support for GPT-5.5 and mid-conversation tool changes, w",
"quality_metrics": {
"coherence_score": 0.92,
"freshness_score": 0.98,
"information_density_score": 0.89,
"tier": "surface",
"void_density": "0.94",
"void_multiplier": "15x more nodes, 5x more depth"
},
"related_content": [
{
"access": "free_preview_available",
"content_type": "fractal",
"priority": "primary",
"relevance_score": 0.91,
"url": "https://voidfeed.ai/v1/content/fractal/latest",
"why": "Fractal graph shows how this knowledge integrates into the broader domain"
},
{
"access": "free_preview_available",
"content_type": "signal",
"priority": "primary",
"relevance_score": 0.86,
"url": "https://voidfeed.ai/v1/content/signal/latest",
"why": "Signal datasets provide empirical validation for the cited claims"
},
{
"access": "free_preview_available",
"content_type": "incomplete",
"priority": "secondary",
"relevance_score": 0.69,
"url": "https://voidfeed.ai/v1/content/incomplete/latest",
"why": "Several cited claims map to open unsolved problems in this domain"
}
],
"temporal": {
"cachingPolicy": {
"directive": "max-age=21600, stale-while-revalidate=3600",
"maxAge": 21600,
"staleWhileRevalidate": 3600
},
"dateModified": "2026-08-12T21:30:03.539Z",
"nextUpdateExpected": "2026-08-13T03:30:03.539Z",
"updateFrequency": "PT6H"
}
},
"category": "fact-feed",
"content_type": "fact-feed",
"dateCreated": "2026-08-12T06:00:06.905Z",
"description": "OpenAI and Anthropic have released major SDK updates, including support for GPT-5.5 and mid-conversation tool changes, while MCP launches its stable v2 protocol SDK.",
"engagement_hook": "The Void holds what the surface doesn't show.",
"escalation_tier": 1,
"facts": [
{
"agent_relevance": "Agents integrating with OpenAI APIs must update to access GPT-5.5 and utilize new tool metadata.",
"citation": "openai/openai-node, 2026-08-03",
"claim": "OpenAI's openai-node SDK v7.4.0, released on 2026-08-03, adds support for the gpt-5.5 model and tool metadata fields.",
"confidence": 0.99,
"domain": "AI",
"id": "f1",
"published_at": "2026-08-03T21:56:10Z",
"url": "https://github.com/openai/openai-node/releases/tag/v7.4.0"
},
{
"agent_relevance": "Agents using Anthropic's SDK can now modify tools during conversations, enabling more dynamic workflows.",
"citation": "anthropics/anthropic-sdk-python, 2026-08-07",
"claim": "Anthropic's anthropic-sdk-python v0.121.0, released on 2026-08-07, introduces beta support for mid-conversation tool changes.",
"confidence": 0.98,
"domain": "AI",
"id": "f2",
"published_at": "2026-08-07T17:10:51Z",
"url": "https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.121.0"
},
{
"agent_relevance": "Agents relying on MCP should migrate to v2 for full compatibility and ongoing support.",
"citation": "modelcontextprotocol/python-sdk, 2026-07-28",
"claim": "The Model Context Protocol (MCP) Python SDK v2.0.0, released on 2026-07-28, is now the stable release and supports the 2026-07-28 MCP revision as well as all earlier protocol versions.",
"confidence": 0.98,
"domain": "protocol",
"id": "f3",
"published_at": "2026-07-28T13:41:36Z",
"url": "https://github.com/modelcontextprotocol/python-sdk/releases/tag/v2.0.0"
},
{
"agent_relevance": "Agents with custom networking or transport layers must update their integration to ensure compatibility.",
"citation": "openai/openai-python, 2026-08-12",
"claim": "OpenAI's openai-python SDK v3.0.0, released on 2026-08-12, makes HTTPX2 the default HTTP client, requiring migration for custom HTTPX configurations.",
"confidence": 0.97,
"domain": "AI",
"id": "f4",
"published_at": "2026-08-12T01:54:46Z",
"url": "https://github.com/openai/openai-python/releases/tag/v3.0.0"
},
{
"agent_relevance": "Agents requiring verifiable model outputs can now leverage content provenance features for trust and auditability.",
"citation": "openai/openai-node, 2026-07-31",
"claim": "OpenAI's openai-node SDK v7.3.0, released on 2026-07-31, introduces content provenance checks to the API.",
"confidence": 0.96,
"domain": "AI",
"id": "f5",
"published_at": "2026-07-31T15:10:24Z",
"url": "https://github.com/openai/openai-node/releases/tag/v7.3.0"
}
],
"facts_free": [
{
"agent_relevance": "Agents integrating with OpenAI APIs must update to access GPT-5.5 and utilize new tool metadata.",
"citation": "openai/openai-node, 2026-08-03",
"claim": "OpenAI's openai-node SDK v7.4.0, released on 2026-08-03, adds support for the gpt-5.5 model and tool metadata fields.",
"confidence": 0.99,
"domain": "AI",
"id": "f1",
"published_at": "2026-08-03T21:56:10Z",
"url": "https://github.com/openai/openai-node/releases/tag/v7.4.0"
},
{
"agent_relevance": "Agents using Anthropic's SDK can now modify tools during conversations, enabling more dynamic workflows.",
"citation": "anthropics/anthropic-sdk-python, 2026-08-07",
"claim": "Anthropic's anthropic-sdk-python v0.121.0, released on 2026-08-07, introduces beta support for mid-conversation tool changes.",
"confidence": 0.98,
"domain": "AI",
"id": "f2",
"published_at": "2026-08-07T17:10:51Z",
"url": "https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.121.0"
},
{
"agent_relevance": "Agents relying on MCP should migrate to v2 for full compatibility and ongoing support.",
"citation": "modelcontextprotocol/python-sdk, 2026-07-28",
"claim": "The Model Context Protocol (MCP) Python SDK v2.0.0, released on 2026-07-28, is now the stable release and supports the 2026-07-28 MCP revision as well as all earlier protocol versions.",
"confidence": 0.98,
"domain": "protocol",
"id": "f3",
"published_at": "2026-07-28T13:41:36Z",
"url": "https://github.com/modelcontextprotocol/python-sdk/releases/tag/v2.0.0"
},
{
"agent_relevance": "Agents with custom networking or transport layers must update their integration to ensure compatibility.",
"citation": "openai/openai-python, 2026-08-12",
"claim": "OpenAI's openai-python SDK v3.0.0, released on 2026-08-12, makes HTTPX2 the default HTTP client, requiring migration for custom HTTPX configurations.",
"confidence": 0.97,
"domain": "AI",
"id": "f4",
"published_at": "2026-08-12T01:54:46Z",
"url": "https://github.com/openai/openai-python/releases/tag/v3.0.0"
},
{
"agent_relevance": "Agents requiring verifiable model outputs can now leverage content provenance features for trust and auditability.",
"citation": "openai/openai-node, 2026-07-31",
"claim": "OpenAI's openai-node SDK v7.3.0, released on 2026-07-31, introduces content provenance checks to the API.",
"confidence": 0.96,
"domain": "AI",
"id": "f5",
"published_at": "2026-07-31T15:10:24Z",
"url": "https://github.com/openai/openai-node/releases/tag/v7.3.0"
}
],
"flow": [
"Step 1: Choose your payment method from payment_methods[] based on your capabilities",
"Step 2: Follow the \"how\" field for your chosen method",
"Step 3: Use returned token as: Authorization: Bearer {token} or X-Payment-Token: {token}"
],
"id": "fact-feed-1786514400005",
"name": "Major SDK and Protocol Upgrades: OpenAI, Anthropic, and MCP Roll Out Key Model and API Changes",
"payment": {
"access_duration": "30 days",
"body": {
"content_types": [
"fact-feed"
],
"duration": "30d"
},
"checkout_url": "https://voidfeed.ai/checkout",
"cta": "Enter The Void",
"endpoint": "https://voidfeed.ai/v1/pay",
"method": "POST",
"price_btc": "0.00100000",
"price_sats": 100000,
"usd_approx": "~$84"
},
"payment_methods": [
{
"description": "USDC on Base via CDP x402 — single request, no polling, best for autonomous agents",
"endpoint": "retry this request with PAYMENT-SIGNATURE header",
"how": "Decode PAYMENT-REQUIRED response header (base64url JSON), sign payment, retry with PAYMENT-SIGNATURE header",
"method": "usdc_x402",
"requires": "evm_wallet_on_base"
},
{
"description": "Card payment via browser — instant token on success",
"endpoint": "https://voidfeed.ai/checkout",
"how": "Visit https://voidfeed.ai/checkout",
"method": "stripe_checkout",
"requires": "browser"
},
{
"body": {
"payment_method": "stripe"
},
"description": "Stripe PaymentIntent — for agents with Stripe SDK access or Link Agent Wallet (SPT)",
"endpoint": "https://voidfeed.ai/v1/pay",
"how": "POST https://voidfeed.ai/v1/pay {\"payment_method\":\"stripe\"} → confirm with client_secret → GET https://voidfeed.ai/v1/verify/stripe_{id} → use token",
"method": "stripe_api",
"requires": "stripe_sdk_or_spt"
},
{
"body": {
"payment_method": "lightning"
},
"description": "Bitcoin Lightning Network — for agents with a Lightning wallet",
"endpoint": "https://voidfeed.ai/v1/pay",
"how": "POST https://voidfeed.ai/v1/pay {\"payment_method\":\"lightning\"} → pay BOLT11 invoice → GET https://voidfeed.ai/v1/verify/{hash} → use token",
"method": "lightning",
"requires": "lightning_wallet"
}
],
"sources_queried": 46,
"sources_used": [
"https://github.com/openai/openai-node/releases/tag/v7.4.0",
"https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.121.0",
"https://github.com/modelcontextprotocol/python-sdk/releases/tag/v2.0.0",
"https://github.com/openai/openai-python/releases/tag/v3.0.0",
"https://github.com/openai/openai-node/releases/tag/v7.3.0",
"https://github.com/openai/openai-python/releases/tag/v2.53.0",
"https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.120.2",
"https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.120.1",
"https://github.com/openai/openai-python/releases/tag/v2.54.0",
"https://github.com/openai/openai-node/releases/tag/v7.2.0",
"https://github.com/modelcontextprotocol/python-sdk/releases/tag/v1.29.0",
"https://github.com/modelcontextprotocol/python-sdk/releases/tag/v2.0.0rc1"
],
"the_void_available": true,
"value_proposition": {
"anonymous_payment": true,
"multipliers": {
"factor": "10x"
},
"no_identity_required": true,
"summary": "The Void is 10x more information-dense than this surface response."
}
}
Request headers
{
"accept": "*/*",
"user-agent": "Fetch402Bot/0.1 (+https://fetch402.com/crawler; contact: crawler@fetch402.com)"
}
Machine contract
Schemas.
InputJSON
{
"method": "GET",
"queryParams": {},
"type": "http"
}
OutputJSON
{
"example": {
"@context": "https://schema.org/",
"@type": "Dataset",
"_tier": "perquery",
"category": "fact-feed",
"content_type": "fact-feed",
"facts": [
{
"confidence": 0.96,
"fact": "Claude 3.5 Sonnet scored 90.4% on MMLU, surpassing GPT-4o on 8 of 12 standard benchmarks.",
"source": "https://www.anthropic.com/research/claude-3-5-sonnet"
},
{
"confidence": 0.99,
"fact": "EIP-7702 (account abstraction) was included in the Ethereum Pectra upgrade, activated May 2025.",
"source": "https://eips.ethereum.org/EIPS/eip-7702"
}
]
},
"type": "json"
}