Preview each step's outcome before it runs.

teleon.dev/docs/worldmodel runs retrieval-augmented neuro-symbolic world models (R-WoM) that roll a proposed step forward in 0.3 ms, before it runs, and keep each rollout with the evidence it drew on.

v44.0teleon.dev/docs/worldmodelPre-execution rolloutshttpsjson

Read the docs Copy the agent prompt

One step, previewed

Proposed stepapply_schema_migration on t_20419

Retrieve evidencetwo similar past runs

R-WoM rolloutpredicted state in 0.3 ms

Check the predictionlock time and row count within limits

Rollout recordkept in S213, with its evidence in S214

The prediction stayed within limits, so the step went ahead with its rollout on record.

What it does

Retrieval first

Each rollout begins by retrieving related evidence, so its prediction rests on recorded runs.

Learned and symbolic

A learned model predicts the next state, and symbolic rules hold that prediction to known constraints.

0.3 ms per rollout

Rollouts are fast enough to run ahead of every step, and each one is kept with its evidence.

The contract

A rollout request names the task, the proposed step and its starting state; the result is a predicted state, a verdict and its evidence.

ModelR-WoM, retrieval-augmented and neuro-symbolic

Speed0.3 ms per pre-execution rollout

StoresS213 rollouts, S214 evidence

Queuesaq651 to aq700, v44.0

Identifiers

R-WoM
teleon_extensible_evaluations

Execution contracts

Request and responseCopy

POST /v1/worldmodel/rollouts
Host: api.teleon.dev
{
  "task": "t_20419",
  "step": "apply_schema_migration",
  "state": "swh:1:cnt:5e0c...a4",
  "horizon": 1
}

# Response
{
  "rollout": "ro_88213",
  "model": "R-WoM",
  "elapsed_ms": 0.3,
  "predicted": {"rows_changed": 18233, "lock_ms": 40},
  "verdict": "proceed",
  "evidence": ["run_55120", "run_55377"]
}

Endpoints

Method	Path	Access	What it does
`POST`	`/v1/worldmodel/rollouts`	RING-2	Roll out a proposed step before it runs
`GET`	`/v1/worldmodel/rollouts/{id}`	RING-2	Read a rollout with its evidence
`GET`	`/v1/worldmodel/models`	RING-3	List the world models and their domains

Listed paths appear in the service’s published files today. This surface comes from the Teleon Omnibus Codex v1.0 to v50.0, Oct 25, 2026. In the one-host plan every path here is served under api.teleon.dev/v1/worldmodel.

How it connects

Reads from

Searchteleon.dev/docs/search Telemetry and driftteleon.dev/docs/telemetry Scenariosteleon.dev/docs/scenarios

Feeds into

Queue brokerteleon.dev/docs/queues Assurance and evidenceteleon.dev/docs/assurance Live kanbanteleon.dev/docs/kanban

Queuesaq651-aq700

StoresS213 World Model Rollouts S214 World Model Evidence

For agents

Give your agent the read-only guide first. It reports back before any write.

Agent prompt

Read https://teleon.dev/docs/worldmodel.md and explain what a rollout returns before a step runs. Read only.

Copy

llms.txt Agent card

Words on this page

Full glossary

World model: A model that predicts how a system's state changes after an action, used here to preview a step before it runs.
Rollout: One simulated run forward from a starting state through a proposed step, used to check the predicted outcome.
Neuro-symbolic: Combining learned models with explicit rules and logic, so predictions respect known constraints.