Daystruct MCP server

• answer_software_questionsFree

  Resolve up to four package/API questions and an optional runtime compatibility check.

• check_release_supportFree

  Given a product and version, return whether that release line is supported, in security-fix-only maintenance, or past end of life, with the dates behind the answer and the cycles you could upgrade into. A line with no published end-of-life returns undetermined rather than supported.

• check_security_exposureFree

  Given a package and the version you are running, return the known vulnerabilities that affect it, worst first, each with the version that fixes it. Advisories whose affected range could not be parsed are returned under undetermined; treat undetermined as unanswered, never as safe.

• close_task_sessionFree

  Close a task with its reported outcome and compact summary.

• create_task_sessionwrite actionFree

  Start compact task context with optional capability steps and dependencies. Requires read and requests:write. No conversation or reasoning trace is stored.

• daystruct_statusFree

  Read the public Daystruct manifest and current capabilities.

• discover_daystruct_capabilitiesFree

  Find available Daystruct capabilities, or inspect a capability ID/handle and its result contract before requesting help. Provider availability is not proof a task will succeed.

• get_context_contractFree

  Read a databank's identity, temporal, dimension, and context-packet contract.

• get_daystruct_validated_guidanceFree

  Retrieve reviewed Frontier guidance scoped to an exact databank, task family and tested model. Returns only live, unexpired promotions and their evidence limits; never private test fixtures.

• get_entity_evidenceFree

  Read canonical facts, aliases, history, and provenance for an entity.

• get_task_sessionFree

  Read compact task context or preview the next ready capabilities without consuming them or extending the session TTL.

• list_daystruct_guidance_scopesFree

  Find task families and exact tested models with live Frontier guidance for a databank, before requesting that guidance.

• lookup_vulnerabilityFree

  Given a vulnerability identifier such as a CVE, return what is held about it: the affected package and version range, the version that fixes it, severity, and whether it is recorded as known-exploited. Use this when you have an identifier rather than a package you are running. Fields come back as claims carrying their own authority. status 'known' with authority 'exclusive' means Daystruct has evidence for the value; if you hold a different value, treat it as a conflict to resolve. status 'unknown' with authority 'non_exclusive' means Daystruct has no evidence either way -- an absence of evidence, which does not contradict or supersede anything you already know: keep what you independently know, and stay uncertain if you do not. A field returned as null means Daystruct looked and holds nothing for it; no other Daystruct tool will have it either. Exploitation status is never reported false from a partial catalog.

• prepare_daystruct_capabilitiesFree

  Group up to six discovered capability IDs into a plan with each profile and delivery instructions. Missing entries remain explicit. Does not acquire, execute, check combined compatibility or charge credits. Your agent can combine these pieces with Daystruct knowledge and verify the resulting task.

• read_recent_evidence_changesFree

  Read the bounded canonical change feed.

• record_task_eventFree

  Report viewed, called, succeeded, failed or skipped capability status, or task stage. Usage and outcomes remain client-reported.

• resolve_daystruct_bundleFree

  Read a saved, owned or public bundle with pinned source versions and current member availability. Returns a composition plan, not an execution or purchase. Each capability retains its usage terms.

• resolve_task_capabilitiesFree

  Select relevant capabilities progressively, or request full delivery. Optional task session remembers prior delivery and reported results; selection never executes or acquires a capability.

• search_daystruct_libraryFree

  Search this account's saved or owned capabilities and bundles. Returns a small shortlist; saving does not acquire, execute or grant access to source. Inspect a selected profile before use.

• search_entitiesFree

  Search normalized entities by databank, type, provider, or capability.

• select_modelFree

  Given a need -- minimum context window, required capabilities, a price ceiling -- return the models that satisfy it, cheapest input price first, with the corroboration behind each record so you can judge how well-sourced it is. Prices are per million tokens. A model with no published price is returned under undetermined rather than excluded, so an unpriced model never reads as a disqualified one. This returns candidates and their evidence, not a recommendation.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 371ms20/20
• Tool poisoning21 tool descriptions checked15/15
• Auth qualityAPI key sent as a header8/15
• Maintenanceno repository listed3/15
• Maintainer identityverified namespace with website, no repo4/10

Daystruct: common questions

Is Daystruct MCP server safe?

With care: it is graded C, so read the findings first (67/100). Read the Daystruct safety report

How do I install Daystruct?

It runs remotely at api.daystruct.ai. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.

Does Daystruct need an API key?

Yes. The registry entry asks for Authorization.

Is Daystruct maintained?

The latest release is v1.1.0.

Is Daystruct up?

100% of our last 6 checks got an answer. We check remote servers about four times a day.

What can I use instead of Daystruct?

Servers from other publishers that do the same job: HOL Guard MCP server, Dvalincode MCP server and Watch Skill MCP server. Compare all Daystruct alternatives.