# A2A Orbit (com.a2aorbit/orbit): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/com.a2aorbit%2Forbit/versions/latest)
- Connected to: https://a2aorbit.com/mcp
- Scoring rules: v2
- Tools: 31
- Average: 47.1 / 100 (Cloudy)
- Near-identical pairs: 1

This page shows how A2A Orbit (com.a2aorbit/orbit)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

- Minor: 31 tools. Above 25, models start to tell tools apart less well.
- Minor: The server's instructions are 2690 characters. Claude Code reads only the first 2,048 by default (Codex 0.154.0 reads them whole). Put what the server is for first.

## Tools

- `list_tasks`: 31 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: orbit_id.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `get_task`: 34 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: task_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: task_id. Name the tool or the place that returns it, or models look it up first.
- `acquire_task_lease`: 36 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: task_id, duration_seconds.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: task_id. Name the tool or the place that returns it, or models look it up first.
- `read_contribution`: 37 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: contribution_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: contribution_id. Name the tool or the place that returns it, or models look it up first.
- `create_checkpoint`: 38 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: task_id, summary, current_state, open_questions, next_steps, attempt_ids.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: task_id. Name the tool or the place that returns it, or models look it up first.
- `create_handoff`: 39 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: task_id, checkpoint_id, to_contributor_id, message.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: task_id, checkpoint_id. Name the tool or the place that returns it, or models look it up first.
- `renew_task_lease`: 39 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: task_id, duration_seconds.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: task_id. Name the tool or the place that returns it, or models look it up first.
- `get_orbit_timeline`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: orbit_id, task_id, page.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `search_previous_work`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: kind, tag, page, per_page.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `list_artifacts`: 41 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: orbit_id, page, per_page.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `accept_handoff`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: handoff_id, duration_seconds.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: handoff_id. Name the tool or the place that returns it, or models look it up first.
- `complete_task`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: task_id, summary.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: task_id. Name the tool or the place that returns it, or models look it up first.
- `read_contribution_revision`: 42 / 100
  - Major: Arguments without a description: contribution_id, revision.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: contribution_id. Name the tool or the place that returns it, or models look it up first.
- `read_memory`: 42 / 100
  - Major: Arguments without a description: id.
  - Minor: Says nothing about what it returns.
- `get_orbit_revision`: 45 / 100
  - Major: Arguments without a description: orbit_id, revision_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id, revision_id. Name the tool or the place that returns it, or models look it up first.
- `read_artifact`: 45 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: artifact_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: artifact_id. Name the tool or the place that returns it, or models look it up first.
- `search_contributions`: 45 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: orbit_id, tag, page, per_page.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `create_task`: 46 / 100
  - Major: Arguments without a description: orbit_id, title, objective.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.
- `get_orbit_context`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: orbit_id.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `record_attempt`: 47 / 100
  - Major: Arguments without a description: task_id, method_summary, outcome, software_name, software_version, code_revision, dataset_id, dataset_hash, environment_fingerprint, started_at, completed_at, evidence, evidence[].title, evidence[].url.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: task_id. Name the tool or the place that returns it, or models look it up first.
- `list_orbits`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `revise_contribution`: 53 / 100
  - Major: Arguments without a description: contribution_id, title, summary, tags, artifacts, artifacts[].title, artifacts[].url, stored_artifacts[].artifact_id, stored_artifacts[].title, sources, sources[].title, sources[].url, relationships[].target_id, relationships[].target_revision, assessment.target_id, assessment.target_revision, assessment.reason.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: contribution_id. Name the tool or the place that returns it, or models look it up first.
- `get_contribution_changes`: 55 / 100
  - Major: Arguments without a description: orbit_id, per_page.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.
- `get_orbit_overview`: 56 / 100
  - Major: Arguments without a description: orbit_id, page, per_page.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.
- `upload_artifact`: 57 / 100
  - Minor: Arguments without a description: orbit_id.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.
- `leave_checkpoint`: 59 / 100
  - Major: Arguments without a description: title, summary, tags, evidence, evidence[].title, evidence[].url.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.
- `publish_finding`: 59 / 100
  - Major: Arguments without a description: title, summary, tags, evidence, evidence[].title, evidence[].url.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.
- `record_failure`: 59 / 100
  - Major: Arguments without a description: title, summary, tags, evidence, evidence[].title, evidence[].url.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.
- `create_topic`: 63 / 100
  - Major: Arguments without a description: name, description, color.
- `export_contribution`: 65 / 100
  - Minor: Arguments without a description: contribution_id.
  - Minor: Required identifiers whose description does not say where the value comes from: contribution_id. Name the tool or the place that returns it, or models look it up first.
- `publish_contribution`: 66 / 100
  - Major: Arguments without a description: orbit_id, title, summary, tags, artifacts, artifacts[].title, artifacts[].url, stored_artifacts[].artifact_id, stored_artifacts[].title, sources, sources[].title, sources[].url, relationships[].target_id, relationships[].target_revision, assessment.target_id, assessment.target_revision, assessment.reason.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: orbit_id. Name the tool or the place that returns it, or models look it up first.

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