ismail
PYPI · ISMAIL
Open-source DAW your agent runs itself, no AI audio model: compose, mix, hear it as text, play live.
Available components
Last scanned (4 hours ago)
Scores higher than 43% of PyPI servers
Category Design and Media
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security44
- Malware scan not yet available for this package.Unverified
- No known CVEs affecting this package version or its production dependencies.Pass
- Declares code that runs automatically (setup.py, a custom setup.py cmdclass) and that we could not recognise. It may be perfectly ordinary, but we have not established what it does. View diagnostics → Partial
- 3 of 51 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency100
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to newsbubbles/ismail). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 7 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability0
- Schema quality not yet verified: the captured schema was too large for us to store in full, or the server stopped listing its tools part-way, so we will not judge it on a partial copy.Unverified
Stability & Change Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage0
- Tool coverage not yet verified: the captured tool definitions were too large for us to store in full, or the server stopped listing its tools part-way, so we will not judge them on a partial copy.Unverified
Tool Safety0
- Tool safety not yet verified: the captured tool definitions were too large for us to store in full (the trim removes the very descriptions this category reads), or the server stopped listing its tools part-way.Unverified
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Unverified: 3 categories
Categories scored 0 because our sandbox has not given us the schema these checks need to read. That is a gap on our side rather than a finding about the package, and we only credit what we can confirm, so the score stands at 0 until the capture succeeds. We are working through the fleet, so this normally clears without any action from you. How we score packages →
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 −15
- Malware scan: pass → unverified ▼ security
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +15
- Malware scan: unverified → pass ▲ security
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- Package version: 0.4.2 → 0.4.3 functional
- 27 Oct 26 37
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed pypi/ismail@0.4.3
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | pypi |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | newsbubbles/ismail |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/newsbubbles/ismail/.github/workflows/release.yml@refs/tags/v0.4.3 |
| Rekor log index | 3537942676 |
| Predicate type | PyPI publish attestation https://docs.pypi.org/attestations/publish/v1 |
| Subject digest | sha256:0bd8d333cc62a64eed33249e970ad6e1ebb17ff7d977f2e4bfc5c2029dcd4694 |
Background: How many MCP packages publish verified provenance →
Install scripts 3 scripts
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | setuptools.build_meta |
| setup_py | unreviewed | <setup.py, unreviewed> |
| cmdclass | unreviewed | <custom, unreviewed> |
Background: Why install scripts are a supply-chain risk →
Dependencies 51 packages
| Packages resolved | 51 |
|---|---|
| Stale | 2 |
| No linked repository | 1 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
live_load ~367
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| at | string | – | – |
| bars | array | – | – |
| cue | boolean | – | – |
| deck | string | yes | – |
| loop | boolean | – | – |
| project | string | yes | – |
| song | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_map ~285
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| at | string | – | – |
| control | string | yes | – |
| curve | string | – | – |
| param | string | – | – |
| project | string | yes | – |
| range | array | – | – |
| remove | boolean | – | – |
| target | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_midi ~377
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| channel | integer | – | – |
| instrument | – | – | – |
| project | string | yes | – |
| remove | boolean | – | – |
| source | string | – | – |
| track | string | – | – |
| transpose | integer | – | – |
| volume_db | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_midi_clock ~281
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| offset_ms | number | – | – |
| on | boolean | – | – |
| port | string | – | – |
| position | boolean | – | – |
| project | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_midi_out ~431
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| at | string | – | – |
| audio | boolean | – | – |
| channel | integer | – | – |
| offset_ms | number | – | – |
| port | string | – | – |
| project | string | yes | – |
| remove | boolean | – | – |
| track | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_parity ~250
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | yes | – |
| song | string | yes | – |
| tracks | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_played ~632
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bar | integer | – | – |
| bars | – | – | – |
| fit | boolean | – | – |
| from_bar | integer | – | – |
| into | string | – | – |
| mode | string | – | – |
| placement | string | – | – |
| project | string | yes | – |
| source | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_queue ~569
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| cancel_at | string | – | – |
| cancel_section | string | – | – |
| clips | array | – | – |
| project | string | yes | – |
| section | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_record ~49
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| on | boolean | – | – |
| project | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_start ~387
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| beats_per_bar | integer | – | – |
| bpm | number | yes | – |
| cap_db | number | – | – |
| device | string | – | – |
| follow_device | boolean | – | – |
| priority | string | – | – |
| project | string | yes | – |
| trim_db | number | – | – |
| workers | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_status ~292
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| deck | string | – | – |
| project | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_stop ~68
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| fade_sec | number | – | – |
| project | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_stream ~161
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | – | – |
| project | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_tempo ~239
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| at | string | – | – |
| bpm | number | yes | – |
| project | string | yes | – |
| ramp_beats | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_track ~444
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| at | string | – | – |
| deck | string | – | – |
| fx | – | – | – |
| instrument | – | – | – |
| output | string | – | – |
| pan | number | – | – |
| project | string | yes | – |
| remove | boolean | – | – |
| sends | object | – | – |
| track | string | yes | – |
| volume_db | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_transition ~257
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| at | string | – | – |
| bars | integer | – | – |
| from_deck | string | – | – |
| project | string | yes | – |
| stop_from | boolean | – | – |
| style | string | – | – |
| to | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
live_view ~73
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | integer | – | – |
| clip | string | – | – |
| project | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
machine_disk ~240
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| top | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
machine_status ~143
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| project | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
master_cue ~540
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| end_s | number | – | – |
| fade_in_s | number | – | – |
| fade_out_s | number | – | – |
| lufs | number | – | – |
| mp3 | boolean | – | – |
| mp3_catch_db | number | – | – |
| mp3_margin_db | number | – | – |
| out | string | – | – |
| source | string | yes | – |
| sr | integer | – | – |
| start_s | number | – | – |
| tp | number | – | – |
| tp_catch | boolean | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
melody_consensus ~497
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| held_pct | number | – | – |
| high | string | – | – |
| legato_steps | integer | – | – |
| low | string | – | – |
| mode | string | – | – |
| onset_db | number | – | – |
| phrase_bars | integer | yes | – |
| project | string | yes | – |
| reps | array | yes | – |
| rest_db | number | – | – |
| short_db | number | – | – |
| source | string | yes | – |
| steps_per_beat | integer | – | – |
| track | string | – | – |
| write_at | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
midi_play ~307
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | – | – |
| channel | integer | – | – |
| clock | boolean | – | – |
| max_s | number | – | – |
| port | string | yes | – |
| project | string | yes | – |
| tracks | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
midi_ports ~140
No description provided.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
midi_read ~260
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bar | integer | – | – |
| file | string | yes | – |
| into | object | – | – |
| mode | string | – | – |
| project | string | yes | – |
| quantize | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
midi_sources ~53
No description provided.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
midi_write ~291
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | – | – |
| markers | object | – | – |
| out | string | – | – |
| project | string | yes | – |
| tracks | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
mimic_measure ~433
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| check | boolean | – | – |
| defaults | object | – | – |
| folder | string | – | – |
| kind | string | – | – |
| name | string | yes | – |
| no_top | boolean | – | – |
| notes | array | – | – |
| project | string | yes | – |
| vel | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_clash ~526
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | – | – |
| key | string | – | – |
| min_overlap | number | – | – |
| n | integer | – | – |
| project | string | yes | – |
| tracks | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_clear ~52
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | yes | – |
| pitches | array | – | – |
| project | string | yes | – |
| track | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_copy ~100
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| from_bars | array | yes | – |
| mode | string | – | – |
| project | string | yes | – |
| times | integer | – | – |
| to_bar | integer | yes | – |
| to_track | string | – | – |
| track | string | yes | – |
| transpose | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_from_audio ~189
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | yes | – |
| floor_db | number | – | – |
| high | string | – | – |
| low | string | – | – |
| max_notes_per_step | integer | – | – |
| min_steps | integer | – | – |
| mode | string | – | – |
| project | string | yes | – |
| rel_db | number | – | – |
| source | string | yes | – |
| track | string | yes | – |
| transpose | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_from_audio_loop ~290
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | yes | – |
| base_bars | array | – | – |
| floor_db | number | – | – |
| high | string | – | – |
| loop_bars | integer | – | – |
| low | string | – | – |
| min_presence | number | – | – |
| min_rel_db | number | – | – |
| min_steps | integer | – | – |
| mode | string | – | – |
| project | string | yes | – |
| rel_db | number | – | – |
| source | string | yes | – |
| track | string | yes | – |
| write_bars | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_read ~137
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | – | – |
| project | string | yes | – |
| step | number | – | – |
| track | string | yes | – |
| view | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_transform ~204
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | array | yes | – |
| dur_scale | number | – | – |
| dur_set | number | – | – |
| legato | boolean | – | – |
| offset_ms | number | – | – |
| pitches | array | – | – |
| project | string | yes | – |
| quantize | number | – | – |
| shift_beats | number | – | – |
| track | string | yes | – |
| transpose | integer | – | – |
| vel_scale | number | – | – |
| velocity | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
notes_write ~205
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bar | integer | yes | – |
| bars | integer | – | – |
| mode | string | – | – |
| notes | string | yes | – |
| project | string | yes | – |
| repeat | integer | – | – |
| track | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
ops_find ~220
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | – |
| n | integer | – | – |
| need | string | – | – |
| role | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
pattern_write ~138
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| bar | integer | yes | – |
| dur | number | – | – |
| lanes | object | yes | – |
| mode | string | – | – |
| project | string | yes | – |
| repeat | integer | – | – |
| step | number | – | – |
| track | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_ask ~114
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| override_grant | string | – | – |
| sender | string | – | – |
| text | string | yes | – |
| wait | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_buttons ~74
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| buttons | array | – | – |
| sender | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_buzz ~43
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| pattern | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_claim ~229
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| by | string | yes | – |
| n | integer | yes | – |
| why | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_exam ~688
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| answers_path | string | – | – |
| check | boolean | – | – |
| chips | array | – | – |
| choices | array | – | – |
| clips | array | yes | – |
| exam_id | string | – | – |
| floor | string | – | – |
| floor_from | string | – | – |
| key | object | – | – |
| measured | object | – | – |
| question | string | – | – |
| secrets | array | – | – |
| sender | string | – | – |
| title | string | yes | – |
| unmeasured | string | – | – |
| wait | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_expect ~165
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| by | string | – | – |
| minutes | number | – | – |
| who | string | yes | – |
| why | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_hum ~130
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| voice_id | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_listen ~380
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| lead | boolean | – | – |
| page | boolean | – | – |
| since | integer | – | – |
| wait | number | – | – |
| who | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_now ~378
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| into | number | – | – |
| length | number | – | – |
| mood | string | – | – |
| next | string | – | – |
| next_mark | string | – | – |
| now | string | – | – |
| now_mark | string | – | – |
| now_of | array | – | – |
| recording_why | string | – | – |
| sections | array | – | – |
| sender | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_offer ~171
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| album | string | – | – |
| artist | string | – | – |
| auto | boolean | – | – |
| label | string | – | – |
| path | string | yes | – |
| sender | string | – | – |
| title | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_panel_close ~28
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| panel_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_panel_show ~737
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| buttons | array | – | – |
| image | string | – | – |
| inputs | array | – | – |
| link | string | – | – |
| link_label | string | – | – |
| override_grant | string | – | – |
| panel_id | string | – | – |
| priority | string | – | – |
| sender | string | – | – |
| text | string | – | – |
| title | string | – | – |
| video | string | – | – |
| video_wait | string | – | – |
| wait | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
phone_presence ~148
No description provided.
| Name | Type | Req | Description |
|---|---|---|---|
| minutes | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
How do I install the ismail MCP server?
ismail runs locally as a PyPI package, launched with uvx ismail. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
pypi · ismail
claude mcp add newsbubbles-ismail -- uvx ismail
What is the ismail MCP server?
ismail is an MCP server listed in the public MCP registry as io.github.newsbubbles/ismail. Open-source DAW your agent runs itself, no AI audio model: compose, mix, hear it as text, play live. This page covers its PyPI package (ismail).
Is the ismail MCP server safe to use?
ismail scores 41 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
Is the ismail MCP server still maintained?
ismail is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the ismail MCP server under?
ismail declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.