Agent2Agent Protocol
Generated Evaluation Status
This section is generated from the framework manifest and compatibility report. Do not edit it manually.
- Framework ID:
agent2agent-protocol - Manifest:
docs/external-frameworks/agent2agent-protocol.json - Compatibility report:
./reports/agent2agent-protocol.compatibility.json - Evidence class:
SOURCE_REVIEWED - Independently reproducible:
False - Comparative-testing claim allowed:
False - Missing reproducibility gates:
shared_test_vector, raw_output, timestamp, runtime_configuration, source_version_or_hash, replay_commands, declared_expected_outcome, independent_reproduction - Evaluation result:
COMPATIBILITY_EVIDENCE_ONLY - Cycle status:
FIRST_FRAMEWORK_CYCLE_COMPLETE - Execution authority claim:
False - Next bounded action: Add executable observations, raw outputs, pinned versions, replay commands, and independent reproduction before making comparative-testing claims.
- Posting source: generated compatibility report
- Generated status is descriptive compatibility evidence only.
Generated Authored Analysis Boundary
This section is generated. Do not edit it manually.
- Framework ID:
agent2agent-protocol - Framework name:
Agent2Agent Protocol - Generated sections above this boundary may be rebuilt from registry, manifest, compatibility-report, and result artifacts.
- Authored analysis below this boundary may contain interpretation, notes, and framework-specific discussion.
- Generators must preserve authored analysis unless a future validator explicitly declares a migration path.
- Boundary rule: generated material is descriptive compatibility evidence only and does not create certification, endorsement, adoption, proof, or operational permission.
Generated Transition Mapping
This section is generated from the framework manifest. Do not edit it manually.
| Field | Generated Value |
|---|---|
framework_identity | Agent2Agent Protocol |
source_reference | https://a2a-protocol.org/latest/specification/ |
source_version | latest public specification recorded |
allowed_use_boundary | agent interoperability and task-exchange evidence only |
claims | discovery, Agent Cards, messages, tasks, artifacts, completion, failure, and authenticated interactions |
non_claims | no universal trust, delegation, admissibility, or execution authority |
input_artifact_type | Agent Card, message, task, or artifact |
output_artifact_type | protocol task state or exchange evidence |
actor_or_authority_model | agent identities and authenticated interactions; authority not inherited |
evidence_model | official specification plus local bounded crosswalk |
policy_or_rule_model | protocol task and interaction rules |
delegation_model | must be reconstructed independently for the requested consequence |
decision_or_result_model | task state, completion, or failure only |
execution_authority_claim | false |
receipt_or_trace_model | protocol messages, task states, and local compatibility record |
reconstruction_model | source and exchange evidence can reconstruct protocol interaction context |
SPE_overlap | agent and task evidence may enter standing review |
StegVerse_ecosystem_overlap | preparation and interoperability path before commitment |
fail_closed_conditions | missing source version, undefined task mapping, missing delegation, or authority overclaim |
Generated mapping is compatibility evidence only.
Generated Framework Metadata
This section is generated from the external-framework registry. Do not edit it manually.
- Framework ID:
agent2agent-protocol - Name:
Agent2Agent Protocol - Registry status:
SOURCED-CROSSWALK-PROVISIONAL - Testbench state:
SOURCE_RECORDED_CROSSWALK_PROVISIONAL - Manifest path:
docs/external-frameworks/agent2agent-protocol.json - Source reference:
https://a2a-protocol.org/latest/specification/ - Metadata boundary: generated metadata is descriptive only; it does not create certification, endorsement, formalism adoption, admissibility proof, or execution authority.
Evidence posture
evidence_class: SOURCE_REVIEWED
page_completeness: COMPLETE_WITH_EXTERNAL_GATES
runtime_observation: none attached
independent_reproduction: false
comparative_testing_claim_allowed: false
execution_authority_claim_allowed: false
Published scope
A2A defines agent interoperability concepts for discovery through Agent Cards, messages, tasks, artifacts, completion, failure, and authenticated interactions.
Canonical source: https://a2a-protocol.org/latest/specification/
Source snapshot posture: the protocol specification is recorded, but no pinned agent implementation, Agent Card, task trace, authentication exchange, artifact custody record, or independent replay receipt is attached.
Native terms
| A2A term | Meaning here | StegVerse relationship |
|---|---|---|
| Agent Card | Description of an agent and its skills or endpoint. | Discovery evidence; not proof of current authority. |
| Task | Stateful unit of work exchanged between agents. | Proposed transition or work packet requiring separate admissibility. |
| Message | Communication within a task. | Evidence input; not an authorization grant. |
| Artifact | Output associated with task progress or completion. | Result evidence requiring provenance and custody. |
| Task state | Submitted, working, completed, failed, or similar status. | Workflow state; not consequence-binding standing. |
Relationship to admissibility
A2A asks: How can agents discover one another and exchange tasks and artifacts?
StegVerse asks: Did the acting agent have current authority for this specific consequence?
agent discovered != trusted for every action
task accepted != consequence authorized
task completed != transition admissible
artifact returned != governed result accepted
Agent discovery and task exchange can enter the StegVerse path as proposed interaction evidence. Delegation, current standing, target scope, recoverability, and consequence authority remain separately evaluated.
Observation boundary
No public StegVerse A2A runtime observation is claimed.
shared task vector: missing
raw messages and task events: missing
timestamp: missing
agent configuration: missing
implementation version or hash: missing
replay commands: missing
declared expected outcome: missing
independent reproduction: missing
StegVerse analysis
| Criterion | Current result |
|---|---|
| Identity | Agent Cards and authenticated channels may identify endpoints; identity does not prove standing. |
| Authority | Task acceptance or completion does not establish authority to bind consequence. |
| Policy | Policy remains external unless explicitly referenced and pinned in the task envelope. |
| Delegation | Delegation must bind agent, skill, target, scope, and validity window. |
| Evidence | Messages, task transitions, artifacts, and errors can become evidence when retained. |
| Replayability | Requires pinned agents, cards, task inputs, authentication state, and transport behavior. |
| Reconstructability | Partial until all task state transitions and artifact custody are retained. |
| Failure behavior | Unknown agent, invalid task state, missing delegation, or artifact mismatch must fail closed. |
| Interoperability | A2A task records can become Commitment Candidate evidence, not inherited authority. |
Commit-time interoperability contract
transition_id
requesting_actor
requesting_agent_id
responding_agent_id
agent_card_reference
agent_card_hash
requested_skill
requested_action
target_system
task_id
task_input_hash
authentication_reference
delegation_reference
policy_reference
task_state_history
artifact_references
artifact_hashes
execution_context
validity_window
source_timestamp
Failure classes
| Failure class | Applies | Current boundary |
|---|---|---|
| Agent identity ambiguity | Yes | Agent Card identity may not equal current controller or operator. |
| Authority drift | Yes | Delegation can expire while a task remains active. |
| Delegation leakage | Yes | A declared skill may exceed the task's authorized scope. |
| Task-state confusion | Yes | Completion state may be mistaken for admissibility. |
| Artifact substitution | Yes | Returned artifacts require hashes and custody evidence. |
| Replay divergence | Yes | Agent implementations and external services can alter outcomes. |
| Fail-open interaction error | Yes | Failed or indeterminate tasks must not authorize consequence. |
Machine-readable companions
manifest: docs/external-frameworks/agent2agent-protocol.json
compatibility report: docs/external-frameworks/reports/agent2agent-protocol.compatibility.json
canonical registry: docs/external-frameworks/index.json
canonical union: static/external-frameworks/canonical-union-inventory.v1.json
Maintenance and challenge path
Maintenance owner: StegVerse-Labs/admissibility-wiki, External Frameworks audit surface.
A challenge must identify agent2agent-protocol, the disputed Agent Card, task state, delegation, artifact, or source field, and public evidence supporting correction. Evidence strength cannot increase without a pinned and replayable task exchange.
Validation completion criteria
pinned agent implementations and Agent Cards
shared task vectors
predeclared expected boundaries
raw messages and task-state events
artifact hashes and custody records
authentication, policy, and delegation inputs
timestamps and runtime configuration
replay commands
independent rerun receipt
non-claim language preserved
Benchmark relevance
preparation_boundary, commitment_boundary, authority_boundary, interoperability_path
Non-claims
Protocol completion does not create StegVerse standing, certification, equivalence, execution authority, or general compatibility. A completed task is not proof that the resulting consequence was admissible.
Next safe build target
Attach one pinned two-agent task fixture with Agent Cards, delegation, raw state transitions, artifact hashes, expected StegVerse boundary, replay command, and independent rerun receipt.
This page reflects a bounded admissibility packet. Publication does not create standing. The reflected claim inherits only the standing reconstructable from the referenced evidence, authority, and admissibility conditions.