Tool result records: fast-agent
The verdict line for each probe run, with a link to the record and its captures. The cross-client matrix is on Tool result handling, verified.
85 records, version 0.10.53, registry entry fast-agent. Overlay data/verified/fast-agent.json.
| Scenario | Config | Run | At | Version | Verdict |
|---|---|---|---|---|---|
| app_only | default | http | 2026-07-28 |
0.10.53 | tool not offered to the model |
| app_only | default | stdio | 2026-07-28 |
0.10.53 | tool not offered to the model |
| app_only | anthropic | stdio | 2026-07-28 |
0.10.53 | tool not offered to the model |
| app_only | legacy | stdio | 2025-11-25 |
0.10.53 | tool not offered to the model |
| app_only | modern | stdio | 2026-07-28 |
0.10.53 | tool not offered to the model |
| meta_only | default | http | 2026-07-28 |
0.10.53 | […] content only (1x, as text, _meta did not reach the model) |
| meta_only | default | stdio | 2026-07-28 |
0.10.53 | […] content only (1x, as text, _meta did not reach the model) |
| meta_only | anthropic | stdio | 2026-07-28 |
0.10.53 | […] content only (1x, as text, _meta did not reach the model) |
| meta_only | legacy | stdio | 2025-11-25 |
0.10.53 | […] content only (1x, as text, _meta did not reach the model) |
| meta_only | modern | stdio | 2026-07-28 |
0.10.53 | […] content only (1x, as text, _meta did not reach the model) |
| with_meta | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json, _meta did not reach the model) |
| with_meta | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json, _meta did not reach the model) |
| with_meta | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json, _meta did not reach the model) |
| with_meta | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as json, _meta did not reach the model) |
| with_meta | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json, _meta did not reach the model) |
| audience_user | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| audience_user | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| audience_user | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| audience_user | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as json) |
| audience_user | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| empty_object | default | http | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_empty_object' on server 'probe': 2 validation errors " |
| empty_object | default | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_empty_object' on server 'probe': 2 validation errors " |
| empty_object | anthropic | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "[{"type":"text","text":"Failed to call_tool 'probe_empty_object' on server 'prob" |
| empty_object | legacy | stdio | 2025-11-25 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_empty_object' on server 'probe': 1 validation error f" |
| empty_object | modern | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_empty_object' on server 'probe': 2 validation errors " |
| large | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| large | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| large | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| large | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as text) |
| large | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| no_content_key | default | http | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_no_content_key' on server 'probe': 2 validation error" |
| no_content_key | default | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_no_content_key' on server 'probe': 2 validation error" |
| no_content_key | anthropic | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "[{"type":"text","text":"Failed to call_tool 'probe_no_content_key' on server 'pr" |
| no_content_key | legacy | stdio | 2025-11-25 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_no_content_key' on server 'probe': 1 validation error" |
| no_content_key | modern | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_no_content_key' on server 'probe': 2 validation error" |
| is_error | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| is_error | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| is_error | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| is_error | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as json) |
| is_error | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| with_image | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| with_image | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| with_image | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as blocks) |
| with_image | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as json) |
| with_image | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| schema_match | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| schema_match | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| schema_match | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| schema_match | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as json) |
| schema_match | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| schema_mismatch | default | http | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_schema_mismatch' on server 'probe': Invalid structure" |
| schema_mismatch | default | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_schema_mismatch' on server 'probe': Invalid structure" |
| schema_mismatch | anthropic | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "[{"type":"text","text":"Failed to call_tool 'probe_schema_mismatch' on server 'p" |
| schema_mismatch | legacy | stdio | 2025-11-25 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_schema_mismatch' on server 'probe': Invalid structure" |
| schema_mismatch | modern | stdio | 2026-07-28 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_schema_mismatch' on server 'probe': Invalid structure" |
| mirror | default | http | 2026-07-28 |
0.10.53 | payload once (as json) |
| mirror | default | stdio | 2026-07-28 |
0.10.53 | payload once (as json) |
| mirror | anthropic | stdio | 2026-07-28 |
0.10.53 | payload once (as json) |
| mirror | legacy | stdio | 2025-11-25 |
0.10.53 | payload once (as json) |
| mirror | modern | stdio | 2026-07-28 |
0.10.53 | payload once (as json) |
| sc_empty | default | http | 2026-07-28 |
0.10.53 | "…" no marker reached the model; payload: "{}" |
| sc_empty | default | stdio | 2026-07-28 |
0.10.53 | "…" no marker reached the model; payload: "{}" |
| sc_empty | anthropic | stdio | 2026-07-28 |
0.10.53 | "…" no marker reached the model; payload: "[{"type":"text","text":"{}"}]" |
| sc_empty | legacy | stdio | 2025-11-25 |
0.10.53 | "…" no marker reached the model; payload: "{}" |
| sc_empty | modern | stdio | 2026-07-28 |
0.10.53 | "…" no marker reached the model; payload: "{}" |
| sc_null | default | http | 2026-07-28 |
0.10.53 | […] content only (1x, as text) |
| sc_null | default | stdio | 2026-07-28 |
0.10.53 | […] content only (1x, as text) |
| sc_null | anthropic | stdio | 2026-07-28 |
0.10.53 | […] content only (1x, as text) |
| sc_null | legacy | stdio | 2025-11-25 |
0.10.53 | […] content only (1x, as text) |
| sc_null | modern | stdio | 2026-07-28 |
0.10.53 | […] content only (1x, as text) |
| sc_string | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| sc_string | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| sc_string | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| sc_string | legacy | stdio | 2025-11-25 |
0.10.53 | "…" client error text, no fixture field: "Failed to call_tool 'probe_sc_string' on server 'probe': 1 validation error for " |
| sc_string | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as text) |
| structured_only | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| structured_only | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| structured_only | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| structured_only | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as json) |
| structured_only | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| summary_and_data | default | http | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| summary_and_data | default | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| summary_and_data | anthropic | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |
| summary_and_data | legacy | stdio | 2025-11-25 |
0.10.53 | {…} structuredContent only (1x, as json) |
| summary_and_data | modern | stdio | 2026-07-28 |
0.10.53 | {…} structuredContent only (1x, as json) |