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Open Agentic Schema Framework OASF

Discover The Open Agentic Schema Framework (OASF) is a versioned, hierarchical taxonomy and JSON Schema set for describing an AI agent's skills, domains, and deployment modules, published by Cisco Outshift's AGNTCY project [1]. Unlike most other records under Discover, OASF is not itself a discovery mechanism (there is no well-known path or DNS record that "is" OASF); it is a shared vocabulary that other discovery mechanisms use to classify what they find.

Overview

It solves a taxonomy-consistency problem: without a shared vocabulary, one registry's "text summarization" and another's "document condensation" cannot be matched by an automated filter. OASF assigns every skill, domain and module a stable numeric code within a browsable, versioned hierarchy -- for example, Language Processing [1] > Language Understanding [101] > Contextual Comprehension [10101] -- so registries and search clients can filter and aggregate on identical codes rather than free text [1]. The live schema browser at schema.oasf.outshift.com, fetched 6 September 2026, serves four schema versions concurrently (0.7.0, 0.8.0, 1.0.0, 1.1.0), each with its own Classes, Skills, Domains, Modules, Record Dictionary, Objects and Data Types sections, plus linked API documentation and a GitHub-based contribution path [1].

OASF does not define transport, discovery paths, or a registry protocol of its own -- those are the job of AGNTCY's separate Agent Directory Service (ADS, see ads), which stores records natively in OASF and can export them into other ecosystems' formats (A2A cards, MCP server descriptors, agent-skill files) without changing the underlying OASF-tagged storage [2]. This makes OASF's own adoption hard to measure independently of ADS's: the clearest evidence of use found during this verification is that ADS's specification names OASF as its native record schema and export source, which is direct but is a single implementer's declared dependency rather than an independent count of registries or agents tagged against the taxonomy [2].

Current state: the schema is actively versioned (four concurrent versions browsable, with a "show deprecated items" toggle implying an active deprecation/lifecycle process) but carries no publication date of its own on the browser page, unlike the dated IETF drafts and the ARD spec elsewhere on this map -- version history is tracked through the schema browser's version selector rather than a single canonical spec document with a title-page date [1]. Implementation is recorded as "shipping" on the strength of the AGNTCY/ADS dependency; adoption is recorded as "observed" rather than "measured" or "claimed," since no adopter beyond AGNTCY's own tooling was independently verified and no probe was run.

What is disputed or unknown: whether any registry or agent framework outside the AGNTCY/ADS lineage has adopted OASF as its primary skill taxonomy, versus ADS being currently its only real consumer; and how OASF's numeric skill codes relate (if at all) to ARD's free-text capabilities filter tokens or representativeQueries mechanism, which solve an adjacent classification problem without a shared taxonomy.

Discovery and probe

not a discovery-path mechanism itself; consumed as the record schema underlying AGNTCY's Agent Directory Service (ADS) and its OCI-artifact export format · none

GET https://schema.oasf.outshift.com/{version}/objects/{class}.json
parse:     200 response is a JSON Schema document for the requested OASF class/version, confirming which schema version a given record or registry claims to conform to
on absent: Not applicable at a per-domain level -- OASF is a shared taxonomy consumed by registries and records, not a well-known site artifact; absence just means a given record does not declare an OASF-conformant schema_version

Not probed live: no-fixed-path. OASF schemas live on the schema host, not on the origin using them.

History

Instances

Every instance with its source is listed on the instances page.

See also

References

  1. The OASF schema browser (schema.oasf.outshift.com), fetched 2026-09-06, currently serves versions 0.7.0 through 1.1.0 and defines a multi-level taxonomy of Skills (e.g. Language Processing > Language Understanding > Contextual Comprehension), Domains and Modules, plus Record Dictionary Objects and Data Types, with linked API documentation and a public GitHub contribution flow. — https://schema.oasf.outshift.com/ (2026-09-06) VERIFIED
  2. AGNTCY's Agent Directory Service (ADS) draft names OASF explicitly as the native record format its Agent Directory Records are stored in, and as one of the export targets from its AI Finder REST API. — https://datatracker.ietf.org/doc/html/draft-mp-agntcy-ads-02 (2026-07-06) VERIFIED

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