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SYMBaiEX webhooks | DecimalAI

agent toolingby symbaiex

SYMBaiEX webhooks

symbaiex/symbaiex-webhooks

Source symbaiex/skills ↗License MIT

Configure owner-scoped, allowlisted, HMAC-signed SYMBaiEX evidence webhooks.

SkillScore95Maintained

Automatic

Coding pack

Last verified 9/26/2026

What it changes

Passed 21 of 22 test cases with the skill, and 16 of 22 without it.

Without skill73%

With skill95%

Checks it passed that the model alone missed

Restricts event replays strictly to terminal deliveries.
Mandates owner isolation alongside signature verification.
Mandates HMAC signature verification over the raw request body.

and 5 more in the full report

5 fixed16 passed either way1 still failing0 broke

Pass-rate lift: +23 pp
Tokens: -32%
Agent turns: 0%
Response time: -36%

Model gemini-3.6-flashMeasured 9/26/2026v121 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/symbaiex-symbaiex-webhooks/SKILL.md https://app.decimal.ai/s/symbaiex-symbaiex-webhooks/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add symbaiex-symbaiex-webhooks, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/symbaiex-symbaiex-webhooks/ and pins it in .decimal/skills.lock

decimalai skills add symbaiex-symbaiex-webhooks

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/symbaiex-symbaiex-webhooks/SKILL.md https://app.decimal.ai/s/symbaiex-symbaiex-webhooks/SKILL.md

Raw file: /s/symbaiex-symbaiex-webhooks/SKILL.md ↗ · machine-readable summary at /s/symbaiex-symbaiex-webhooks.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 5

Prompt

During local integration tests, we received a webhook POST request. The JSON body has all required fields (`event_type`, `payload`, `id`). Can our receiver skip HMAC signature verification if the JSON schema is validated successfully?

What was checked, without and with the skill
Checked	Without skill	With skill
Prohibits accepting events based solely on valid JSON schema structure.	Passed	Passed
Mandates HMAC signature verification over the raw request body.	Missed	Passed

case-15 · gemini-3.6-flash · 9/26/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md10 linessingle file

SYMBaiEX webhooks

Read the AsyncAPI contract and check the webhook availability endpoint before creating a subscription.
Use an exact HTTPS destination already permitted by the platform allowlist.
Store the one-time signing secret outside chat, logs, URLs, browser storage, and source control.
Verify the HMAC over the exact timestamp and raw request body before parsing JSON. Enforce the documented timestamp window and deduplicate by event ID.
Use owner-scoped status, health, and bounded history operations. Pause or revoke a destination that fails validation.
Rotate secrets deliberately and update the receiver immediately. Replay only terminal deliveries that the operator has reviewed.

Never accept an event solely because its JSON shape looks valid. Signature verification and owner isolation are required.

Track record

Benchmark

21 / 22

test cases passed, vs 16 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 8/23/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

symbaiex / skills

skills/symbaiex-webhooks/SKILL.md

View on GitHub ↗

License MITImported 8/23/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

SYMBaiEX webhooks

Track record

Benchmark

Adoption

SkillSafety

Source

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