Official MCP RegistryListed
Agentic Web Wiki — standards reference, probe, validate, template
Look up 100+ agentic-web standards, live-probe any domain, validate manifests, generate boilerplate.
First seen 18 Oct 2026. Evidence as of 18 Oct 2026.
10
Tools
From an anonymous probe
1
Source listings
Each with its own history
1
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| ask | Ask what to implement for a goal in plain words, e.g. 'let agents pay per request', 'stop AI training crawls', 'let ChatGPT call my API'. Input: question; optional use_case (one of the 15 use-case ids in the schema) and audience. Returns the matched use case(s), up to 8 standards ranked by fit, maturity and adoption with reasons, do_this_first (prerequisites first), deprecated standards to avoid, and related ones to consider (also_consider carries id, name, step and question). | Read-only |
| changes | What changed on the map since a date. Input: since (YYYY-MM-DD; an ISO-8601 timestamp is cut to its date), optional step, record_id, limit. Returns dated rows with record, kind, field, old and new value, claim, evidence URL and the data commit. | Read-only |
| define | Define a glossary term of the agentic web. Input: term (id, name or alias; plurals tolerated). Returns the definition and related protocol ids. If the word is the name of a standard rather than a term (x402, ARD, AGENTS.md) it returns that standard's summary instead of an error. | Read-only |
| get | Get one standard's full record by id: status, governance, version, spec URL, discovery, probe rule, evidence with URLs, disputes, summary, freshness. The id may be written as the file or path it is known by (llms.txt, /.well-known/ard.json, A2A); a miss names the nearest ids. | Read-only |
| has | Check one public origin for one standard by fetching its well-known path live. Input: origin (hostname), id (standard id). Returns found/absent with the URL, status and reason; an apex that redirects to its www. host is followed and reported as final_origin. | Read-only |
| probe | Check one public origin for every standard that can be observed without credentials (about 30 GET rules). Input: origin. Returns found, absent and skipped (with reasons) plus coverage by lifecycle step. An apex that redirects to its www. host is followed and reported as final_origin. | Read-only |
| search | Search the standards by name, acronym, alias, question or use case. Input: q (plain words are fine: 'A2A vs MCP', 'pay per request'). Returns up to 10 matches with id, step and status; a word that is a standard's id or acronym ranks first, and acronym clashes such as ACP are all returned. | Read-only |
| stale | Records whose last verification is older than N days (default 30), optionally within one lifecycle step. Returns the matching records (id, name, step, last_verified, freshness) and, always, total_standards, cutoff, oldest_verified and newest_verified so an empty list is still informative. | Read-only |
| template | Spec-compliant boilerplate for an agent-facing file, filled with your domain: ard (and ai-catalog-well-known-file), llms-txt, agents-md, mcp-server-cards (SEP-2127), a2a (agent card 1.0), ai-crawler-tokens-robots, api-catalog-rfc9727, security-txt, auth-md. Input: id; optional domain, name, description, mcp_url, api_url, agent_url, contact. Returns target_path, content_type, recommended_headers, contents, the fields to edit, notes on the specification, and the validate_manifest call to run once it is live. | Read-only |
| validate_manifest | Validate a public origin's agent-facing manifests against their specifications and grade its agentic-web readiness. Input: origin; optional id to check one manifest only (ard, ai-catalog-well-known-file, mcp-server-cards, a2a, llms-txt, agents-md, api-catalog-rfc9727, ai-crawler-tokens-robots, security-txt, auth-md). Returns grade A+ to F with the rubric, per-manifest errors (spec violations) and warnings (best practice), steps covered, what an agent can call, and the cheapest next steps. The same report is a page at /check/<domain>/ with a badge at /badge/<domain>.svg. | Read-only |
Change history
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | wiki.agenticweb/probe | 18 Oct 2026 | 18 Oct 2026 | 1 |