API Delta Manifest’s maintainer claims the released machine-readable changelog format lets software agents and developers discover breaking API changes and determine required adaptations without parsing prose release notes.

state: expiredheat: lowuncertainty: highconvergesscott: mediumapi-tooling agent-interoperabilityHassan JahanAPI Delta Manifest

What is this?

API Delta Manifest is presented as a machine-readable changelog format, maintained by Hassan Jahan, that distinguishes breaking from non-breaking API changes and records concrete deprecation dates. Its stated purpose is to let software agents and developers identify required adaptations without extracting them from prose release notes. The surrounding results support the underlying need for explicit breaking-change labels, exact affected API elements, and machine-readable deprecation timelines, but they do not independently document the manifest itself or verify its maintainer and adoption.

Why it matters to Scott

The manifest concretely implements Scott’s existing requirement that agent-addressable services expose honest, machine-readable change feeds, extending it with breaking-change classifications, affected elements and deprecation dates that coding agents could act on. This could inform his delegation-surface and code-first agent implementations, although the supplied evidence does not verify adoption or establish the maintainer as an influential ecosystem actor.

ip:framework.agent-addressabilityip:concept.delegation-surfaceip:framework.code-first-architectureradar:mcp-unversioned-tool-driftradar:concept.agent-interoperabilityradar:concept.software-maintenance

queries asked of Scott's wikis

machine-readable API contracts for coding agents
agent-driven dependency upgrades and breaking-change repair
structured changelogs versus prose documentation
API deprecation metadata and automated migration
semantic versioning limits for autonomous agents
tool protocols for agent interoperability

Measured heat

no measured readings yet — the hourly heat pass fills this in

How the heat travelled

no chain yet — the hourly chain pass fills this in

Evidence (5) — ⭐ canonical anchor

source	object	author	score	comments
🟧 hn	API Delta Manifest: Structured API Changelog for AI Agents and Devs	mehraban	2	0
🟧 echo.github ⭐	A structured API changelog manifest intended for consumption by AI agents and developers.	Hassan Jahan	—	—
🟧 hn	Claude-API-guard, a CI check that catches Claude/OpenAI SDK breaking changes	MarkMoneyMan	1	0
🟧 hn	Claude-API-guard, a CI check that catches Claude/OpenAI SDK breaking changes	MarkMoneyMan	2	0
🟧 hn	Claude-API-guard, a CI check that catches Claude/OpenAI SDK breaking changes	MarkMoneyMan	1	0

Interpretation history

2026-09-10T18:01:30Z
Repeated checks have produced only reposts of an adjacent CI checker, leaving the manifest’s adoption and agent-driven adaptation claims unverified. Retain it as design prior art, but end active monitoring: no substantive development or scheduled confirming event is evident.
2026-09-08T17:42:07Z
The latest attachment is another same-author repost of the adjacent CI checker, not an independent implementation or evidence that it uses API Delta Manifest. The manifest remains design prior art supported by maintainer testimony, with adoption and agent-driven adaptation unverified.
2026-09-08T17:23:23Z
evidence attached: hn.story.49612952 — shared external link with case evidence
2026-09-07T12:33:11Z
The stale check adds no substantive evidence: the manifest remains a maintainer-described format, while the adjacent CI checker does not validate its adoption or agent-driven adaptation claims. Retain it as design prior art rather than an established interoperability solution.
2026-09-05T11:28:23Z
The new attachment repeats the same author's Claude-API-guard listing, adding no independent corroboration or implementation evidence. API Delta Manifest remains potentially useful design prior art, not a demonstrated agent-migration workflow or adopted interoperability format.
2026-09-05T11:22:49Z
evidence attached: hn.story.49575421 — shared external link with case evidence
2026-09-03T16:38:51Z
A separate CI checker for Claude and OpenAI SDK breakage adds an adjacent implementation signal, moving the idea beyond a lone format proposal. Its mechanism, relationship to the manifest, and real-world use remain unverified, so this is an emerging tooling pattern rather than corroborated adoption.
2026-09-03T16:23:29Z
evidence attached: hn.story.49551793 — A CI checker for Claude and OpenAI SDK breaking changes materially supports the episode around machine-detectable API-change handling.
2026-09-01T19:55:09Z
No new evidence changes the initial interpretation: this remains relevant design prior art, with no independent adoption, integration, or demonstrated agent-driven migration workflow to substantiate broader impact.
2026-09-01T19:44:31Z
grounded: converges/medium — The manifest concretely implements Scott’s existing requirement that agent-addressable services expose honest, machine-readable change feeds, extending it with
2026-09-01T19:40:56Z
case created — The repository is a concrete interoperability artifact addressing API-change discovery for tool-using agents, although ecosystem adoption remains absent.

Decision trace

09-11 04:01expireRepeated checks have produced only reposts of an adjacent CI checker, leaving the manifest’s adoption and agent-driven adaptation claims unverified. Retain it as design prior art, but end active monit
09-11 04:01alert_silentThere is no new release, integration, demonstrated migration, or actionable API change. Expiring this episode does not disprove its hypothesis; fresh implementation or adoption evidence would justify
09-11 04:01alert_routeThere is no new release, integration, demonstrated migration, or actionable API change. Expiring this episode does not disprove its hypothesis; fresh implementation or adoption evidence would justify
09-09 03:42repriceThe latest attachment is another same-author repost of the adjacent CI checker, not an independent implementation or evidence that it uses API Delta Manifest. The manifest remains design prior art sup
09-09 03:42alert_silentThe repost establishes no new release, integration, demonstrated migration, or actionable SDK change; waiting for substantive evidence costs Scott no identified opportunity.
09-09 03:42alert_routeThe repost establishes no new release, integration, demonstrated migration, or actionable SDK change; waiting for substantive evidence costs Scott no identified opportunity.
09-09 03:23alert_silentThe new item repeats the same Claude-API-guard title and repository already seen twice, with no supplied release change, implementation detail, or demonstrated SDK breakage detection. It also supplies
09-09 03:23alert_routeThe new item repeats the same Claude-API-guard title and repository already seen twice, with no supplied release change, implementation detail, or demonstrated SDK breakage detection. It also supplies
09-09 03:23attachshared external link with case evidence
09-09 03:21propose_attachshared external link with case evidence
09-07 22:33repriceThe stale check adds no substantive evidence: the manifest remains a maintainer-described format, while the adjacent CI checker does not validate its adoption or agent-driven adaptation claims. Retain
09-07 22:33alert_silentThere is no new release, integration, demonstrated migration, or actionable API change. The unchanged listing creates no reason to interrupt Scott or revisit before the normal briefing.
09-07 22:33alert_routeThere is no new release, integration, demonstrated migration, or actionable API change. The unchanged listing creates no reason to interrupt Scott or revisit before the normal briefing.
09-05 21:28repriceThe new attachment repeats the same author's Claude-API-guard listing, adding no independent corroboration or implementation evidence. API Delta Manifest remains potentially useful design prior a
09-05 21:28alert_silentThe repost establishes no new release, capability, integration, or SDK-breaking-change event. There is no identified action or opportunity lost by waiting for substantive evidence and the normal brief
09-05 21:28alert_routeThe repost establishes no new release, capability, integration, or SDK-breaking-change event. There is no identified action or opportunity lost by waiting for substantive evidence and the normal brief
09-05 21:22alert_silentThe new item repeats the same author's earlier Claude-API-guard post and repository link, with no added release, implementation detail, or demonstrated breaking-change detection. It is relevant d
09-05 21:22alert_routeThe new item repeats the same author's earlier Claude-API-guard post and repository link, with no added release, implementation detail, or demonstrated breaking-change detection. It is relevant d
09-05 21:22attachshared external link with case evidence
09-05 21:21propose_attachshared external link with case evidence
09-04 02:38repriceA separate CI checker for Claude and OpenAI SDK breakage adds an adjacent implementation signal, moving the idea beyond a lone format proposal. Its mechanism, relationship to the manifest, and real-wo
09-04 02:38alert_silentThe new listing modestly strengthens the pattern but provides no implementation details, demonstrated migration workflow, adoption, or consequential participant; it can wait for substantive repository
09-04 02:38alert_routeThe new listing modestly strengthens the pattern but provides no implementation details, demonstrated migration workflow, adoption, or consequential participant; it can wait for substantive repository
09-04 02:24alert_silentA new repository appears to implement a CI check for Claude and OpenAI SDK breaking changes, providing adjacent evidence that machine-readable API-change handling is becoming a concrete tooling patter
09-04 02:24surface_candidateA new repository appears to implement a CI check for Claude and OpenAI SDK breaking changes, providing adjacent evidence that machine-readable API-change handling is becoming a concrete tooling patter
09-04 02:24alert_routeA new repository appears to implement a CI check for Claude and OpenAI SDK breaking changes, providing adjacent evidence that machine-readable API-change handling is becoming a concrete tooling patter
09-04 02:23attachA CI checker for Claude and OpenAI SDK breaking changes materially supports the episode around machine-detectable API-change handling.
09-04 02:22propose_attachA CI checker for Claude and OpenAI SDK breaking changes materially supports the episode around machine-detectable API-change handling.
09-02 05:55repriceNo new evidence changes the initial interpretation: this remains relevant design prior art, with no independent adoption, integration, or demonstrated agent-driven migration workflow to substantiate b
09-02 05:55alert_silentThe reobservation is unchanged and adds no consequential delta; the existing artifact can wait for evidence of implementation, adoption, or a working automated adaptation flow.
09-02 05:55alert_routeThe reobservation is unchanged and adds no consequential delta; the existing artifact can wait for evidence of implementation, adoption, or a working automated adaptation flow.
09-02 05:52alert_silentA maintainer-created repository establishes that the proposed machine-readable changelog format exists, but the supplied evidence shows no tagged release, adoption, integration, influential backing, o
09-02 05:52surface_candidateA maintainer-created repository establishes that the proposed machine-readable changelog format exists, but the supplied evidence shows no tagged release, adoption, integration, influential backing, o
09-02 05:52alert_routeA maintainer-created repository establishes that the proposed machine-readable changelog format exists, but the supplied evidence shows no tagged release, adoption, integration, influential backing, o
09-02 05:44groundThe manifest concretely implements Scott’s existing requirement that agent-addressable services expose honest, machine-readable change feeds, extending it with breaking-change classifications, affecte
09-02 05:40createThe repository is a concrete interoperability artifact addressing API-change discovery for tool-using agents, although ecosystem adoption remains absent.