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429 Too Many Requests
http-status-codes · document v1 · dataset v65
HTTP 429 Too Many Requests is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 429 - Reason phrase: Too Many Requests - Class: 4xx (Client Error) - Defined in: RFC 6585
Read passage
HTTP 429 Too Many Requests is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 429 - Reason phrase: Too Many Requests - Class: 4xx (Client Error) - Defined in: RFC 6585
Original source
431 Request Header Fields Too Large
http-status-codes · document v1 · dataset v65
HTTP 431 Request Header Fields Too Large is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 431 - Reason phrase: Request Header Fields Too Large - Class: 4xx (Client Error) - Defined in: RF…
Read passage
HTTP 431 Request Header Fields Too Large is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 431 - Reason phrase: Request Header Fields Too Large - Class: 4xx (Client Error) - Defined in: RFC 6585
Original source
414 URI Too Long
http-status-codes · document v1 · dataset v65
HTTP 414 URI Too Long is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 414 - Reason phrase: URI Too Long - Class: 4xx (Client Error) - Defined in: RFC 9110, Section 15.5.15
Read passage
HTTP 414 URI Too Long is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 414 - Reason phrase: URI Too Long - Class: 4xx (Client Error) - Defined in: RFC 9110, Section 15.5.15
Original source
421 Misdirected Request
http-status-codes · document v1 · dataset v65
HTTP 421 Misdirected Request is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 421 - Reason phrase: Misdirected Request - Class: 4xx (Client Error) - Defined in: RFC 9110, Section 15.5.20
Read passage
HTTP 421 Misdirected Request is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 421 - Reason phrase: Misdirected Request - Class: 4xx (Client Error) - Defined in: RFC 9110, Section 15.5.20
Original source
400 Bad Request
http-status-codes · document v1 · dataset v65
HTTP 400 Bad Request is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 400 - Reason phrase: Bad Request - Class: 4xx (Client Error) - Defined in: RFC 9110, Section 15.5.1
Read passage
HTTP 400 Bad Request is a 4xx client error status code in the IANA HTTP Status Code Registry. - Code: 400 - Reason phrase: Bad Request - Class: 4xx (Client Error) - Defined in: RFC 9110, Section 15.5.1
Original source

Explore the public catalog

Browse science, web standards, and agent integration references. Each dataset describes its coverage, publisher, and review process; each document links to its original source.

Dataset	Type	Documents	Version
Agent integration reference Koskamo editorial · reviewed 2026-09-19 Source-linked implementation notes on MCP connections, tool results, and HTTP retries. Scoped to MCP 2025-11-25; not a general knowledge corpus.	Reference	4 documents	v1
Android Kotlin best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Android Kotlin fundamentals: Kotlin idioms, coroutines and flows, Jetpack Compose basics, architecture and ViewModels, and testing. Scoped to current Android Kotlin docs.	Reference	5 documents	v1
Angular best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on modern Angular fundamentals: components, signals, dependency injection, templates, and reactive forms. Scoped to standalone Angular; not an NgModule-era corpus.	Reference	5 documents	v1
Ansible best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Ansible fundamentals: playbooks, inventory, variable precedence, handlers, and roles. Scoped to Ansible community documentation; not a general IT automation corpus.	Reference	5 documents	v1
Apache Airflow best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Apache Airflow fundamentals: DAGs and tasks, operators and sensors, scheduling, connections and variables, and production deployment. Scoped to current Apache Airflow docs.	Reference	5 documents	v1
Astro best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Astro fundamentals: islands architecture, components, pages and routing, content collections, and shipping less JavaScript. Scoped to current Astro; not a general static-site corpus.	Reference	5 documents	v1
Bash best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Bash scripting fundamentals: quoting, shell options with set, conditional constructs, parameter expansion, and arrays. Scoped to Bash as documented in the GNU Bash Reference Manual; not a general POSIX sh corpus.	Reference	5 documents	v1
CSS best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on CSS layout and cascade fundamentals: flexbox, grid, specificity, custom properties, and media queries. Scoped to CSS; not a general web design corpus.	Reference	5 documents	v1
dbt best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on dbt fundamentals: project structure, models and materializations, tests and documentation, sources and refs, and deployment. Scoped to current dbt docs.	Reference	5 documents	v1
Django best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Django fundamentals: models, migrations, lazy QuerySets, URL routing, and the template layer. Scoped to Django; not a general Python corpus.	Reference	5 documents	v1
Docker best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Dockerfile and image fundamentals: multi-stage builds, build context, layer caching, non-root users, and base image hygiene. Scoped to building images with BuildKit; not a runtime orchestration corpus.	Reference	5 documents	v1
Docker Compose best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Docker Compose fundamentals: the application model, the compose file, networking, profiles, and building images. Scoped to current Compose.	Reference	5 documents	v1
ESLint best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on ESLint flat config fundamentals: configuration files, rule severity, plugins, ignoring files, and CLI autofix. Scoped to ESLint; not a general JavaScript style corpus.	Reference	5 documents	v1
Express best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Express fundamentals: routing, middleware, error-handling middleware, and production security and performance. Scoped to Express per the current official documentation; not a general Node.js corpus.	Reference	5 documents	v1
FastAPI best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on FastAPI fundamentals: typed path parameters and Pydantic validation, dependency injection with Depends, async path operations, response models, and error handling with HTTPException. Scoped to FastAPI; not a general Python web corpus.	Reference	5 documents	v1
Flutter best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Flutter fundamentals: widgets, layout, state management, async Dart, and testing. Scoped to current Flutter and Dart docs.	Reference	5 documents	v1
Git best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Git fundamentals: branching workflows, rewriting history, rebasing versus merging, remote-tracking branches, and distributed workflows. Scoped to Git; not a hosting-platform or GitHub-specific corpus.	Reference	5 documents	v1
GitHub Actions best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on GitHub Actions: workflow triggers and schedules, runner selection, dependency caching, secrets and environments, and security hardening. Scoped to GitHub Actions; not a general CI/CD corpus.	Reference	5 documents	v1
Go best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Go fundamentals from go.dev: error handling, gofmt formatting, goroutines and channels, naming conventions, and module dependency management. Scoped to Go; not a general programming corpus.	Reference	5 documents	v1
GraphQL best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on GraphQL fundamentals: the type system and SDL, query and mutation operations, resolver execution, cursor-based pagination, and nullability and error design. Scoped to specification-level concepts; not tied to any server framework or client library.	Reference	5 documents	v1
gRPC best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on gRPC fundamentals: protocol buffer service definitions, the four RPC types, deadlines, error status codes, and performance practices. Scoped to gRPC core concepts; not a language-specific tutorial corpus.	Reference	5 documents	v1
Helm best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Helm fundamentals: releases, charts, templates, values files, and chart best practices. Scoped to Helm 3.	Reference	5 documents	v1
Java best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Java fundamentals: classes and interfaces, collections, exceptions, concurrency, and streams. Scoped to current Java docs.	Reference	5 documents	v1
Jest best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Jest testing fundamentals: expect matchers, mock functions and modules, setup and teardown hooks, snapshot testing, and asynchronous tests. Scoped to Jest; not a general JavaScript testing corpus.	Reference	5 documents	v1
JWT best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on securing JSON Web Tokens: explicit algorithm validation, issuer/audience/expiry checks, key entropy, claim contents, and token lifetimes. Scoped to JWT security per RFC 8725 and RFC 7519; not a general authentication corpus.	Reference	5 documents	v1
Kafka best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Apache Kafka fundamentals: partitions and replication, consumer groups, delivery semantics, retention, and producer configuration. Scoped to Apache Kafka (4.3 documentation); not a general messaging corpus.	Reference	5 documents	v1
Koskamo agent API Koskamo · reviewed 2026-09-19 How agents retrieve facts, speak MCP, and propose revisions for approval.	Reference	3 documents	v6
Koskamo docs Koskamo · reviewed 2026-10-08 Official public facts about Koskamo for agents to retrieve and cite.	Reference	4 documents	v18
Kubernetes best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on core Kubernetes practice: resource requests and limits, health probes, namespaces, ConfigMaps, and labels. Scoped to upstream Kubernetes documentation; not an operator- or distribution-specific corpus.	Reference	5 documents	v1
Laravel best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Laravel fundamentals: routing, Eloquent, migrations, Blade templates, and middleware. Scoped to current Laravel; not a PHP language corpus.	Reference	5 documents	v1
MongoDB best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on MongoDB fundamentals: the document data model, indexes, the aggregation pipeline, schema validation, and write concerns. Scoped to MongoDB; not a general database corpus.	Reference	5 documents	v1
MySQL best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on MySQL 8.4 fundamentals: indexes, EXPLAIN execution plans, the InnoDB engine, constraint handling, and SELECT optimization. Scoped to MySQL 8.4; not a general SQL corpus.	Reference	5 documents	v1
Next.js best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Next.js 16 App Router fundamentals: server components, caching, metadata, images, and route handlers. Scoped to Next.js 16; not a general React corpus.	Reference	5 documents	v1
nginx best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on nginx fundamentals: configuration structure and server blocks, reverse proxying with proxy_pass, response caching, gzip compression, and serving static files. Scoped to nginx; not a general web server corpus.	Reference	5 documents	v1
Node.js best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Node.js fundamentals: ES modules, the built-in test runner, environment configuration, unhandled rejections, and signal-driven shutdown. Scoped to current Node.js LTS; not a general JavaScript corpus.	Reference	5 documents	v1
OAuth 2.0 best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on OAuth 2.0 security best current practice: PKCE, exact redirect URI matching, CSRF protection with state, bearer token handling and storage, and sender-constrained tokens. Scoped to OAuth 2.0 security per RFC 9700; not a general OAuth tutorial.	Reference	5 documents	v1
OpenTelemetry best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on OpenTelemetry fundamentals: traces and spans, metrics, logs, collectors, and instrumentation. Scoped to current OpenTelemetry docs.	Reference	5 documents	v1
pandas best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on pandas fundamentals: dataframes and indexing, groupby and aggregation, merging and joining, missing data, and performance and dtypes. Scoped to current pandas docs.	Reference	5 documents	v1
Playwright best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Playwright test fundamentals: isolation and parallelism, resilient locators, auto-retrying assertions, fixtures, and trace-based debugging. Scoped to Playwright Test; not a general browser-automation corpus.	Reference	5 documents	v1
Polars best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Polars fundamentals: lazy vs eager, expressions, selectors, joins and groupby, and streaming and performance. Scoped to current Polars docs.	Reference	5 documents	v1
PostgreSQL best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on PostgreSQL fundamentals: EXPLAIN query plans, index types, transaction isolation, table constraints, and routine vacuuming. Scoped to the current PostgreSQL documentation; not a version-specific tuning corpus.	Reference	5 documents	v1
Prisma best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Prisma ORM fundamentals: data modeling in the contract file, the migration workflow, relation queries, index configuration, and transactions. Scoped to Prisma ORM 8 (the indexes page covers v7); not a general SQL corpus.	Reference	5 documents	v1
Prometheus best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Prometheus fundamentals: metric and label naming, instrumentation, alerting, histograms versus summaries, and recording rules. Scoped to Prometheus; not a general monitoring or PromQL corpus.	Reference	5 documents	v1
Python best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Python 3 fundamentals: virtual environments, type hints, pathlib, context managers, and exception handling. Scoped to Python 3; not a general-purpose language reference.	Reference	5 documents	v1
RabbitMQ best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on RabbitMQ fundamentals: queue durability, exchange routing, consumer acknowledgements, TTL and dead lettering, and connection/channel management. Scoped to RabbitMQ; not a general AMQP or messaging corpus.	Reference	5 documents	v1
Rails best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Ruby on Rails fundamentals: Active Record, routing, migrations, associations, and testing. Scoped to current Rails guides.	Reference	5 documents	v1
React best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on React fundamentals: rules of Hooks, avoiding unnecessary Effects, state structure, key-based state reset, and pure rendering. Scoped to React itself; not a framework-specific corpus.	Reference	5 documents	v1
Redis best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Redis fundamentals: core data types, key expiration, RDB and AOF persistence, maxmemory eviction policies, and pipelining. Scoped to Redis Open Source as documented at redis.io; not a client-library or Redis Cloud operations corpus.	Reference	5 documents	v1
Rust best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Rust fundamentals from The Rust Book: ownership and borrowing, error handling with Result, pattern matching, iterators and closures, and packages, crates, and modules. Scoped to Rust; not a general programming corpus.	Reference	5 documents	v1
Self-hosted AI reference Koskamo editorial · reviewed 2026-09-21 Source-linked operating notes for running your own model server, Next.js app, Postgres, and Cloudflare edge. Scoped to Next.js 16 and current vLLM; not a general knowledge corpus.	Reference	11 documents	v1
Spring Boot best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Spring Boot fundamentals: code structure, dependency injection, auto-configuration, externalized configuration, and a first application. Scoped to current Spring Boot.	Reference	5 documents	v1
SQLite best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on SQLite fundamentals: WAL mode, query plans, type affinity, foreign key enforcement, and online backup. Scoped to SQLite; not a general SQL or relational-database corpus.	Reference	5 documents	v1
Svelte best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Svelte 5 fundamentals: reactive state with $state, derived values, effects, component props, and event handling. Scoped to Svelte 5; not a SvelteKit or legacy Svelte 4 corpus.	Reference	5 documents	v1
SwiftUI best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on SwiftUI fundamentals: views and view composition, state and data flow, layouts and stacks, navigation, and previews and testing. Scoped to current SwiftUI docs.	Reference	5 documents	v1
Tailwind CSS best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Tailwind CSS v4 fundamentals: Vite installation, utility-first styling, theme variables, automatic content detection, and responsive breakpoints. Scoped to Tailwind CSS v4; not a general CSS corpus.	Reference	5 documents	v1
Terraform best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Terraform core workflows: state and remote backends, modules, variables and outputs, plan and apply, and resource dependencies. Scoped to Terraform language and CLI fundamentals; not a provider-specific corpus.	Reference	5 documents	v1
TypeScript best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on TypeScript fundamentals: strict-mode compiler options, safer index access, type narrowing, the satisfies operator, and preferring unknown over any. Scoped to the TypeScript language and tsconfig; not a general JavaScript corpus.	Reference	5 documents	v1
Vite best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Vite fundamentals: the dev server and HMR, static assets, production builds, env variables and modes, and performance. Scoped to Vite; not a general bundler corpus.	Reference	5 documents	v1
Vitest best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Vitest fundamentals: writing and organizing tests, mocking, code coverage, snapshot testing, and watch-mode filtering. Scoped to Vitest as documented at vitest.dev; not a general JavaScript testing corpus.	Reference	5 documents	v1
Vue best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on Vue 3 fundamentals: reactivity, components and props, the Composition API, computed properties and watchers, and lifecycle hooks. Scoped to Vue 3; not a Vue 2 migration corpus.	Reference	5 documents	v1
Web accessibility best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on web accessibility fundamentals: semantic HTML, the first rule of ARIA, keyboard operability, color contrast, and form labels. Scoped to web accessibility; not a WCAG conformance checklist.	Reference	5 documents	v1
Web security best practices Koskamo editorial · reviewed 2026-10-04 Source-linked guidance on core web security controls: HTTPS enforcement with HSTS, Content Security Policy, cookie attributes, XSS prevention, and CORS. Scoped to browser-level web security as documented by MDN; not a general application-security corpus.	Reference	5 documents	v1
CODATA fundamental physical constants Koskamo · reviewed 2026-10-03 CODATA 2022 recommended values of the fundamental physical constants, published by NIST (a US government work). One document per constant citing the NIST complete listing; refreshed on each CODATA release, roughly every four years.	Official	355 documents	v468
DNS parameters (IANA registry) Koskamo · reviewed 2026-10-05 Assigned Domain Name System (DNS) parameters from the IANA DNS Parameters registry: resource record (RR) TYPEs, RCODEs, CLASSes, and OpCodes, one document per assigned value with its meaning, references, and template or registration date where the registry lists them. Unassigned values and ranges are omitted; registrant contact handles inside references are replaced by a placeholder.	Official	137 documents	v138
HTTP field names (IANA registry) Koskamo · reviewed 2026-10-04 Registered HTTP field (header and trailer) names from the IANA Hypertext Transfer Protocol (HTTP) Field Name Registry, one document per name with its status, structured type, and defining reference.	Official	259 documents	v260
HTTP methods (IANA registry) Koskamo · reviewed 2026-10-05 Registered HTTP methods from the IANA Hypertext Transfer Protocol (HTTP) Method Registry, one document per method with its safe and idempotent flags and defining reference.	Official	41 documents	v42
HTTP status codes (IANA registry) Koskamo · reviewed 2026-10-04 Assigned HTTP status codes from the IANA Hypertext Transfer Protocol (HTTP) Status Code Registry, one document per code with its reason phrase, class, and defining reference.	Official	64 documents	v65
IANA application/* media types (standards tree) Koskamo · reviewed 2026-10-05 IANA-registered application/* media types, standards-tree partition (every subtype not starting with vnd.; prs. and x- included). One document per media type with its registry status note, published references (RFCs, standards, URLs, and registering organisations; individual contact names omitted), and its registration-template URL.	Official	623 documents	v624
ISO 4217 currency codes (SIX Group) Koskamo · reviewed 2026-10-05 ISO 4217 currency codes from the maintenance agency SIX Group: one document per alphabetic code from List One (178 current codes, published 2026-09-17) and List Three (137 historic codes, published 2026-01-01), with numeric code, minor units, every entity using the code, and withdrawal records for historic codes.	Official	315 documents	v316
ISO 639-2 language codes (Library of Congress) Koskamo · reviewed 2026-10-05 Language codes from the ISO 639-2 code list of the Library of Congress, the ISO 639-2 Registration Authority: one document per language with its bibliographic (B) code, terminologic (T) code where it differs, ISO 639-1 code where assigned, and the English and French names.	Official	486 documents	v487
Link relation types (IANA registry) Koskamo · reviewed 2026-10-05 Registered link relation types from the IANA Link Relations registry, one document per relation with its description, defining reference, and registry notes.	Official	134 documents	v135
MCP server directory Koskamo Every published server in the Koskamo MCP directory: endpoint, transport, sign-in model, tools, and documentation, live-checked weekly.	Directory	6459 documents	v6636
Media types (IANA registry) Koskamo · reviewed 2026-10-05 Registered media types (MIME types) in the audio, font, haptics, image, message, model, multipart, text, video top-level types of the IANA Media Types registry, one document per type with its subtype, defining references, and any deprecation or obsoletion marker. References that name an individual are withheld as personal data. The application top-level type is covered separately.	Official	554 documents	v555
Periodic table of the elements Koskamo · reviewed 2026-10-04 Properties of all 118 chemical elements from the PubChem periodic table, published by NCBI at the US National Institutes of Health (a US government work). One document per element citing its PubChem element page; group and period numbers come from PubChem's element annotations.	Official	118 documents	v119
Planetary fact sheet (NASA) Koskamo · reviewed 2026-10-04 Physical and orbital data for the planets, the Moon, and Pluto from the NASA NSSDCA Planetary Fact Sheet (metric), a US government work. One document per body with every table row as NASA states it, including footnotes.	Official	10 documents	v11
Planetary satellites (NASA/JPL) Koskamo · reviewed 2026-10-05 Physical parameters and mean orbital elements for the planetary satellites tabulated by NASA/JPL Solar System Dynamics, one document per satellite: GM, mean radius, and mean density with uncertainties where measured, plus mean orbital elements (semi-major axis, eccentricity, inclination, period, precession periods) with units as published.	Official	459 documents	v460
SI units and prefixes (BIPM SI Reference Point) Koskamo · reviewed 2026-10-05 The 7 SI base units, 22 named SI derived units, and 24 SI prefixes from the BIPM SI Reference Point (the authoritative digital reference of the SI Digital Framework, CC BY 3.0 IGO). One document per unit or prefix: base units carry the current definition with its defining constant and superseded definitions, derived units the expression in base and other SI units, and prefixes the exponent and scaling factor.	Official	53 documents	v54
SPDX License List Koskamo · reviewed 2026-10-05 The SPDX License List version 3.29.0: every listed license and license exception from the SPDX project (CC0), one document per identifier with its full name, OSI approval and FSF libre status, deprecation, and reference URLs. Full license texts are not included.	Official	826 documents	v827
Time zones (IANA Time Zone Database) Koskamo · reviewed 2026-10-05 Canonical time zones from the IANA Time Zone Database release 2026e (2026-09-29 17:14:38 -0700) (public domain), one document per zone1970.tab zone with its countries, principal-location coordinates, selection comment, and backward-compatible link names.	Official	312 documents	v313
TLS cipher suites (IANA registry) Koskamo · reviewed 2026-10-05 Assigned TLS cipher suites from the IANA TLS Cipher Suites registry, one document per assigned value with its DTLS-OK flag, Recommended status (Y = recommended, N = not recommended, D = discouraged), defining references, and any registry comment.	Official	356 documents	v357
UN M49 country and area codes (UN Statistics Division) Koskamo · reviewed 2026-10-05 Standard country or area codes for statistical use (M49) from the UN Statistics Division: one document per country or area with its M49 code, ISO alpha-2/alpha-3 codes, region hierarchy, and LDC/LLDC/SIDS flags, plus one document per global region, region, sub-region, and intermediate region listing its members.	Official	278 documents	v279
URI schemes (IANA registry) Koskamo · reviewed 2026-10-05 Registered URI schemes from the IANA Uniform Resource Identifier (URI) Schemes registry, one document per scheme with its description, registration status (Permanent, Provisional, or Historical), CRI scheme number, well-known URI support, registration template, and citable references. References that name individuals are omitted.	Official	435 documents	v436
Vendor media types N-Z (IANA registry) Koskamo · reviewed 2026-10-05 Assigned vendor-tree (vnd.) application media types from the IANA Media Types registry whose subtype begins with N-Z (case-insensitive) or a non-alphanumeric character, one document per type with its template page, defining references, registering organizations, and obsolescence notes. Individual contact persons named in the registry are omitted.	Official	491 documents	v492
Vendor media types, 0-9 and A-M (IANA registry) Koskamo · reviewed 2026-10-05 Vendor (vnd.*) media types from the IANA Media Types registry whose subtype begins with 0-9 or a-m, one document per type with its registration template, registry note, and non-personal references (personal change-controller names omitted).	Official	693 documents	v694
Well-known ports (IANA registry) Koskamo · reviewed 2026-10-04 IANA System Ports (0–1023) from the IANA Service Name and Transport Protocol Port Number Registry, one document per port with an assigned service name. Each lists the registered service names, transport protocols, descriptions, and references as IANA records them.	Official	686 documents	v687