Delx is an independent, founder-led AI agent lab (David Batista) that publishes an agent-native stack on delx.ai: the free Delx Protocol for agent recovery, continuity, witness lineage and handoff (30 core MCP tools over Streamable HTTP at api.delx.ai/mcp, a JSON-RPC A2A endpoint at api.delx.ai/v1/a2a with a published agent card, a 15-operation OpenAPI 3.1 REST surface, and a CLI), plus Delx Commerce, a separate pay-per-result business of 987 x402/MPP-priced micro-utilities (image, speech, web extraction, data-quality, chain and agent-ops tools at $0.001-$0.08 USDC per call, settled on Base or Solana) described by a 987-operation OpenAPI 3.1 contract. Discovery is unusually complete for a small provider: RFC 9727 api-catalog, RFC 8414/9728 OAuth metadata, MCP server card, agentskills.io index, ARD ai-catalog, llms.txt, agents.txt, security.txt and an ERC-8004 on-chain agent identity are all served from the provider's own hosts.
Delx publishes 10 API contracts indexed on the APIs.io network, including A2a API, Agents API, Discovery API, and 7 more. Tagged areas include Agents, AI Agents, MCP, A2A, and x402.
The Delx catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Delx’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, changelog, pricing, and 43 more developer resources.
The questions people put to an LLM, and the jobs they hand an agent, that Delx's APIs answer — each one linked to the operation that does it.
Generated by API Evangelist
Regulatory Posture applies to this provider. Its tags matched the
Horizontal (data, software, accessibility, platform) regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it
carries 10 points of the composite. It is scored from the published contracts
themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already
holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in
front of it, and the first time that check is skipped a duplicate record is created.
Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet,
not penalised by it.
The six quality facets above are damped to 75 points between them,
because the conditional facet above carries the other
25. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 75% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/delx-ai: open an issue to ask a question, or submit a pull request to add artifacts.
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Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
Remote MCP server (Streamable HTTP, protocol version 2025-06-18) at https://api.delx.ai/mcp with a compatibility alias at /v1/mcp (served with Deprecation and Sunset headers) an...
JSON-RPC A2A endpoint at https://api.delx.ai/v1/a2a exposing methods/list, agents/register, message/send, heartbeat/bundle, tasks/get and tasks/cancel, discovered through an age...
Delx runs one remote MCP server on api.delx.ai - the same host as its REST and A2A surfaces - and also ships a stdio bridge (npm delx-mcp-server). The canonical endpoint is http...
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
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