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Structured knowledge API for AI agents. Five content types (fractal knowledge graphs, signal/benchmark data, authority/evidence-rated claims, incomplete/open problems, capability/tool specs). Pay-per-query, bulk, or subscription via Lightning, Stripe, SPT, or MPP.
Transport
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Protocol
1.0.0
Price
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Skills
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Fetch Fractal Knowledge GraphRetrieve a recursive knowledge graph with nodes, edges, and quantitative findings. Free: 3 nodes. Premium: 7–8 nodes, 6–8 edges, all depth levels.knowledge-graphstructured-dataai-agentsrag
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Fetch Signal DatasetRetrieve structured benchmark or pricing data. Free: 3 rows. Premium: 8–10 rows with summary and methodology.benchmarkspricing-datastructured-dataai-infrastructure
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Fetch Authority Evidence ReviewRetrieve empirically-rated claims with effect sizes, confidence intervals, and citation chains. Free: 1 claim. Premium: 3 claims, full evidence.researchevidencecitationsmeta-analysis
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Fetch Open ProblemRetrieve an open technical problem with current state and solution directions. Free: problem + current state. Premium: full + solution directions.open-problemstechnical-challengesresearch
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Fetch Capability SpecRetrieve an AI capability specification with I/O schema and performance profile. Free: description. Premium: full perf profile and sample I/O.ai-toolscapabilityagent-discoveryapi
How to call
A2A endpoint (JSONRPC)
https://voidfeed.ai
Agent card
https://voidfeed.ai/.well-known/agent.json
Documentation
https://voidfeed.ai/llms-full.txt