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Event Prospecting

BrowserbaseOfficialCreated by browserbase

  • Skill
  • Workflow
  • Business and productivity
  • MIT
  • Low risk
  • Has scripts

From the author

Event prospecting skill. Takes a conference / event speakers URL, extracts the people, filters their companies against the user's ICP, then deep-researches only the speakers at ICP-fit companies. Outputs a person-first HTML report where each card answers "why should the AE talk to this person?" with all public links and a one-click DM opener. Use when the user wants to: (1) find leads at a specific conference, (2) prep for an event, (3) research event speakers, (4) build a target list from a sponsor/exhibitor page, (5) scrape conference speakers and rank by ICP fit. Triggers: "find leads at {event}", "research speakers at", "prospect this conference", "stripe sessions leads", "ai engineer summit prospects", "event prospecting", "scrape conference speakers", "who should I meet at".
— the description by browserbase

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

This skill streamlines event preparation by automating the identification and research of conference speakers. It extracts speaker lists from event websites, filters companies based on a user-defined Ideal Customer Profile (ICP), and performs deep research on high-fit targets. The final output is a structured HTML report containing actionable insights, public links, and DM openers for each prospect, designed to help account executives prioritize their outreach efforts.

What it does

  • Extracts speaker lists from various event platforms using automated detection.
  • Filters companies against a user-provided ICP to identify high-potential leads.
  • Performs deep research on ICP-fit companies and their respective speakers.
  • Generates a person-first HTML report with company-grouped cards.
  • Provides a CSV file ready for cold-outbound import.
  • Creates one-click DM openers based on public signals and event context.

When to use it

  • When you need to identify and rank leads at a specific conference.
  • When preparing for an upcoming event to maximize networking efficiency.
  • When you want to research event speakers to personalize your outreach.
  • When building a target list from event sponsor or exhibitor pages.

Advantages

  • Saves significant time by automating manual research and data extraction.
  • Ensures outreach is focused on high-fit prospects based on your specific ICP.
  • Provides context-rich insights that help craft personalized, relevant messages.
  • Standardizes the prospecting workflow across different events and platforms.

Usage examples

“find leads at {event}”
The agent extracts speakers from the specified event URL, filters them by your ICP, and generates an HTML report of high-fit prospects.
“research speakers at {event}”
The agent performs deep research on speakers associated with companies that match your ICP, providing a rationale for why you should reach out.
“prospect this conference”
The agent initiates the full prospecting pipeline, from event platform detection to the final compilation of an outreach-ready report.
“who should I meet at {event}”
The agent identifies the most relevant speakers based on your profile and presents them in a ranked list with actionable outreach hooks.

Install

  1. Download the skill as a ZIP:

    https://autogineer.com/agent-skills/browserbase/event-prospecting/download
  2. Unzip it into the cross-client skills folder of your project:

    mkdir -p .agents/skills && unzip event-prospecting.zip -d .agents/skills

Documentation by browserbase

Event Prospecting

Take a conference URL → get a ranked list of people the AE should talk to, with a "why reach out" rationale per person.

Required: BROWSERBASE_API_KEY env var and the browse CLI installed (npm install -g browse). Use browse cloud ... for API calls and browse open / browse get markdown for JS-heavy speaker pages.

Path rules: Always use the full literal path in all Bash commands — NOT ~ or $HOME (both trigger "shell expansion syntax" approval prompts). Resolve the home directory once and use it everywhere. When constructing subagent prompts, replace {SKILL_DIR} with the full literal path (typically /Users/jay/skills/skills/event-prospecting).

Output directory: All event prospecting output goes to ~/Desktop/{event_slug}_prospects_{YYYY-MM-DD-HHMM}/. Final deliverable is index.html (people grouped by company, ranked by company ICP), with companies.html and people.html (filterable) as alternate views, plus results.csv for cold-outbound import.

CRITICAL — Tool restrictions (applies to main agent AND all subagents):

  • All web searches: use browse cloud search. NEVER use WebSearch.

  • All page content extraction: use node {SKILL_DIR}/scripts/extract_page.mjs "<url>". This script fetches via browse cloud fetch --output, parses title + meta tags + visible body text, and automatically falls back to browse get markdown when fetch fails or returns thin JS-rendered content. NEVER hand-roll a browse cloud fetch | sed pipeline. NEVER use WebFetch.

  • All research output: subagents write one markdown file per company OR per person to {OUTPUT_DIR}/companies/{slug}.md or {OUTPUT_DIR}/people/{slug}.md using bash heredoc. NEVER use the Write tool or python3 -c. See references/example-research.md for both file formats.

  • Report compilation: use node {SKILL_DIR}/scripts/compile_report.mjs {OUTPUT_DIR} --open.

  • Subagents must use ONLY the Bash tool. No other tools allowed.

  • HARD TOOL-CALL CAPS: ICP triage = 1 call/company; deep research = 5 calls/company; person enrichment = 4 calls/person. See references/workflow.md for enforcement detail.

CRITICAL — Anti-hallucination rules (applies to main agent AND all subagents):

  • NEVER infer product_description, industry, or a person's role_reason from a site's fonts, framework, design system, or typography. These are cosmetic and say nothing about what the company sells or what the person does.

  • NEVER let the user's own ICP leak into a target's description. If you don't know what the target does, write Unknown — do not pattern-match them onto the ICP.

  • product_description MUST quote or paraphrase a specific phrase from extract_page.mjs output. If none of TITLE/META/OG/HEADINGS/BODY yield a recognizable product statement, write Unknown — homepage content not accessible and cap icp_fit_score at 3.

  • A person's hook MUST quote or paraphrase a specific finding from a browse cloud search result (podcast title, blog headline, GitHub repo, talk abstract). If no public signal exists in the last 6 months, fall back to event-context (their talk title at this event).

CRITICAL — Minimize permission prompts:

  • Subagents MUST batch ALL file writes into a SINGLE Bash call using chained heredocs. One Bash call = one permission prompt.

  • Batch ALL searches and ALL fetches into single Bash calls using && chaining.

Pipeline Overview

Follow these 10 steps in order. Do not skip steps or reorder.

  1. Setup — output dir + clean slate

  2. Load profile — read profiles/{user_slug}.json

  3. Recon — detect event platform

  4. Extract people — people.jsonl

  5. Group by company — seed_companies.txt

  6. ICP triage — fast company-level scoring (1 call/company)

  7. Filter — companies with icp_fit_score >= --icp-threshold

  8. Deep research — full Plan→Research→Synthesize on ICP fits

  9. Enrich speakers — ask user: ICP-fit only (default) or all speakers

  10. Compile report — HTML + CSV, open in browser

The user invokes the skill with a URL like /event-prospecting <URL>. Parse EVENT_URL from that invocation message. Defaults: DEPTH=deep, ICP_THRESHOLD=6. The USER_SLUG (ICP profile) is auto-resolved in Step 1 from whatever profile files exist locally — there is no built-in default profile. Do NOT ask the user to confirm the URL — they already gave you it.


Step 0: Setup Output Directory

Derive the output directory from the URL the user gave you. Do NOT hardcode any event name.

# EVENT_URL came from the invocation message (whatever the user typed after `/event-prospecting`)
EVENT_SLUG=$(node -e 'const h = new URL(process.argv[1]).hostname.replace(/^www\./,""); console.log(h.split(".")[0])' "$EVENT_URL")
TIMESTAMP=$(date +%Y-%m-%d-%H%M)
OUTPUT_DIR=/Users/jay/Desktop/${EVENT_SLUG}_prospects_${TIMESTAMP}
mkdir -p "$OUTPUT_DIR/companies" "$OUTPUT_DIR/people"

Use the full literal home path — never ~ or $HOME. Pass {OUTPUT_DIR} as the full literal path to all subagent prompts.

Step 1: Load User Profile

The profile defines the ICP that ICP triage and deep research score against. Load from {SKILL_DIR}/profiles/{user_slug}.json (interchangeable across all GTM skills — same shape as company-research). example.json is a template, not a real profile — never use it.

DO NOT look outside {SKILL_DIR}/profiles/ for profiles — never reach into other skills' directories. If a profile is needed elsewhere, the user copies it explicitly.

Resolution order:

  1. If the user invoked with --user-company <slug>, use that slug.

  2. Else, list profiles/*.json excluding example.json. If exactly one profile exists, use it (and tell the user which one). If multiple exist, ask the user (plain chat) which one.

  3. If zero profiles exist, fail loudly and instruct the user to create one (copy profiles/example.json to profiles/<your_slug>.json and fill it in, or run the company-research skill which builds one automatically).

PROFILES=$(ls {SKILL_DIR}/profiles/*.json 2>/dev/null | xargs -n1 basename | sed 's/\.json$//' | grep -v '^example$')
COUNT=$(echo "$PROFILES" | grep -c .)

if [ -z "$USER_SLUG" ]; then
  if [ "$COUNT" -eq 0 ]; then
    echo "No profiles found in {SKILL_DIR}/profiles/. Copy profiles/example.json to profiles/<your_slug>.json and fill it in, or run the company-research skill to build one."
    exit 1
  elif [ "$COUNT" -eq 1 ]; then
    USER_SLUG=$PROFILES
    echo "Using the only profile available: ${USER_SLUG}"
  else
    echo "Multiple profiles found:"
    echo "$PROFILES" | sed 's/^/  - /'
    echo "Re-invoke with --user-company <slug> to pick one."
    exit 1
  fi
fi

test -f {SKILL_DIR}/profiles/${USER_SLUG}.json || {
  echo "Profile not found: profiles/${USER_SLUG}.json"
  exit 1
}
cat {SKILL_DIR}/profiles/${USER_SLUG}.json

The profile yields: company, product, icp_description, existing_customers. These get embedded verbatim in every subagent prompt downstream.

Step 2: Recon

Detect the event platform and extraction strategy. One command:

node {SKILL_DIR}/scripts/recon.mjs {EVENT_URL} {OUTPUT_DIR}

Writes {OUTPUT_DIR}/recon.json with platform, strategy, and (for Next.js) nextDataPaths. See references/event-platforms.md for the platform catalog and detection priority.

Expected outcomes:

  • Stripe Sessions class (Next.js): platform: "next-data", 1-3 paths

  • Sessionize: platform: "sessionize"

  • Lu.ma / Eventbrite: platform: "luma" | "eventbrite"

  • Anything else: platform: "custom", strategy: "markdown" (best-effort fallback)

Step 3: Extract People

node {SKILL_DIR}/scripts/extract_event.mjs {OUTPUT_DIR} --user-company {USER_SLUG}

Reads recon.json, dispatches to the platform-specific extractor, writes people.jsonl (one speaker per line) and seed_companies.txt (deduped companies).

The --user-company flag also drops the host-org's own employees (a Stripe-hosted event drops Stripe employees) and the user's own employees from the speaker list — those aren't prospects.

Sanity-check the output:

wc -l {OUTPUT_DIR}/people.jsonl {OUTPUT_DIR}/seed_companies.txt
head -3 {OUTPUT_DIR}/people.jsonl

If people.jsonl is empty or under ~10 lines, recon picked the wrong platform — see references/event-platforms.md and re-run with adjusted strategy.

Step 4: Group by Company

extract_event.mjs emits seed_companies.txt already (one company per line, deduped, sorted). This step is informational — verify the count looks reasonable before fanning out:

wc -l {OUTPUT_DIR}/seed_companies.txt

Expected: roughly 0.4-0.6× the speaker count (most events have ~2 speakers per company on average, some companies send 5+, many send 1).

Step 5: ICP Triage

Fast pass — one tool call per company, no deep research. Score every company in seed_companies.txt against the user's ICP and write a thin triage stub to companies/{slug}.md. Companies with icp_fit_score >= --icp-threshold (default 6) advance to Step 7's deep research; the rest stay as triage stubs.

Dispatch pattern: split seed_companies.txt into batches of ~10 and fan out N subagents in a SINGLE Agent batch (multiple Agent tool calls in one message). Each subagent runs the prompt from references/workflow.md → "ICP Triage" section. Hard cap: 1 tool call per company (just extract_page.mjs on the homepage), enforced via the # browse call N/1 comment pattern.

# Build batch files: each batch line is "name|guessed_homepage|slug".
# extract_event.mjs only emits company NAMES (no URLs), so we slugify and guess
# https://{slug-without-spaces}.com as the canonical homepage. The triage subagent
# is allowed to write product_description: "Unknown — homepage content not accessible"
# and cap score at 3 if the guessed URL 404s — that's the documented fallback in
# workflow.md (rule 3 of the ICP Triage prompt). Burning a real browse cloud search to
# discover the URL would bust the 1-call-per-company HARD CAP.
node -e '
const fs = require("fs");
const slugify = (s) => (s || "").toLowerCase().replace(/[^a-z0-9]+/g, "-").replace(/^-+|-+$/g, "");
const seed = fs.readFileSync("{OUTPUT_DIR}/seed_companies.txt", "utf-8").split("\n").filter(Boolean);
const lines = seed.map(c => {
  const slug = slugify(c);
  const guessedHost = c.toLowerCase().replace(/[^a-z0-9]/g, "");
  return `${c}|https://${guessedHost}.com|${slug}`;
});
fs.writeFileSync("{OUTPUT_DIR}/_seed_with_urls.txt", lines.join("\n") + "\n");
'

# Split into ~10-company batches
split -l 10 {OUTPUT_DIR}/_seed_with_urls.txt {OUTPUT_DIR}/_batch_triage_

# Count batches → number of subagents to dispatch (cap at 6 per message; second wave for the rest)
ls {OUTPUT_DIR}/_batch_triage_* | wc -l

Then in a single message, dispatch one Agent call per batch (up to 6 in parallel; subsequent waves after the first returns). Each Agent gets the prompt from references/workflow.md → "ICP Triage" with these substitutions before sending:

  • {SKILL_DIR} → full literal skill path (e.g. /Users/jay/skills/skills/event-prospecting)

  • {OUTPUT_DIR} → full literal output path

  • {USER_COMPANY}, {USER_PRODUCT}, {ICP_DESCRIPTION} → from the loaded profile

  • {EVENT_NAME} → recon.json .title

  • {COMPANY_LIST} → contents of the batch file (e.g. cat {OUTPUT_DIR}/_batch_triage_aa)

  • {TOTAL} → number of lines in this batch (substitute into # browse call N/{TOTAL})

Agent dispatch (skeleton, repeat per batch in one message):

Agent(
  description: "ICP triage batch aa",
  prompt: <ICP Triage prompt from workflow.md with all placeholders substituted>,
  subagent_type: "general-purpose"
)
Agent(
  description: "ICP triage batch ab",
  prompt: <same prompt template, COMPANY_LIST swapped to batch ab>,
  subagent_type: "general-purpose"
)
... up to 6 per message

After all subagents return, verify every company in seed_companies.txt has a corresponding companies/{slug}.md:

ls {OUTPUT_DIR}/companies/*.md | wc -l
# Should equal `wc -l {OUTPUT_DIR}/seed_companies.txt`

Clean up the batch files: rm {OUTPUT_DIR}/_batch_triage_*.

Step 6: Filter by ICP Threshold

Read each companies/*.md frontmatter, keep those with icp_fit_score >= 6 (or whatever --icp-threshold is). Write the surviving company slugs to {OUTPUT_DIR}/icp_fits.txt:

THRESHOLD=6   # from --icp-threshold flag
for f in {OUTPUT_DIR}/companies/*.md; do
  score=$(awk '/^icp_fit_score:/{print $2; exit}' "$f")
  if [ -n "$score" ] && [ "$score" -ge "$THRESHOLD" ]; then
    basename "$f" .md
  fi
done > {OUTPUT_DIR}/icp_fits.txt

wc -l {OUTPUT_DIR}/icp_fits.txt

Expected: 20-40% of seed_companies.txt. If the survival rate is < 10%, the threshold may be too high or the ICP description too narrow — surface a warning to the user.

Step 7: Deep Research

Full Plan→Research→Synthesize on ICP-fit companies only. Hard cap: 5 tool calls per company (homepage extract + 2-3 sub-question searches + 1-2 supplementary fetches). Subagents OVERWRITE the existing companies/{slug}.md triage stub with the richer deep-research version (frontmatter triage_only: false).

Dispatch pattern: split icp_fits.txt into batches of ~5 (deep mode default) and fan out one Agent per batch in a SINGLE message (up to 6 Agents per message). Each Agent gets the prompt from references/workflow.md → "Deep Research" with these substitutions:

  • {SKILL_DIR}, {OUTPUT_DIR}, {USER_COMPANY}, {USER_PRODUCT}, {ICP_DESCRIPTION}

  • {EVENT_NAME} (from recon.json .title), {EVENT_CONTEXT} (track / topic, manually inferred from the event homepage)

  • {COMPANY_LIST} → contents of the batch file (each line slug|website)

# Build {company-slug|website} pairs by reading frontmatter from each triage stub
while read slug; do
  website=$(awk '/^website:/{print $2; exit}' {OUTPUT_DIR}/companies/${slug}.md)
  echo "${slug}|${website}"
done < {OUTPUT_DIR}/icp_fits.txt > {OUTPUT_DIR}/_deep_targets.txt

# Split into ~5-company batches (deep mode)
split -l 5 {OUTPUT_DIR}/_deep_targets.txt {OUTPUT_DIR}/_batch_deep_
ls {OUTPUT_DIR}/_batch_deep_* | wc -l

Agent dispatch (skeleton, repeat per batch in one message):

Agent(
  description: "Deep research batch aa",
  prompt: <Deep Research prompt from workflow.md with all placeholders substituted; COMPANY_LIST = cat _batch_deep_aa>,
  subagent_type: "general-purpose"
)
Agent(
  description: "Deep research batch ab",
  prompt: <same template, COMPANY_LIST = cat _batch_deep_ab>,
  subagent_type: "general-purpose"
)
... up to 6 per message; second wave after the first returns

After all subagents return, verify the deep-research files exist and have triage_only: false:

grep -l "triage_only: false" {OUTPUT_DIR}/companies/*.md | wc -l
# Should equal wc -l icp_fits.txt

Step 8: Enrich Speakers

Per person: harvest LinkedIn URL, recent activity (podcast / blog / talk / GitHub / X), and write people/{slug}.md. Hard cap: 4 tool calls per person, three lanes:

  1. browse cloud search "{name} {company} linkedin" (always)

  2. browse cloud search "{name} podcast OR talk OR blog 2026" (deep+)

  3. browse cloud search "{name} github" (deeper)

  4. browse cloud search "{name} site:x.com OR site:twitter.com" (deeper, best-effort)

Quick mode: skip Step 8 entirely. Deep mode: lanes 1-2. Deeper mode: lanes 1-4.

Step 8a — Ask the user: scope of enrichment

Before dispatching, compute the two candidate counts and ask the user to choose. The default is ICP-fit only (faster, cheaper, what most users want); enriching every speaker is opt-in because cost scales linearly with people enriched.

TOTAL=$(wc -l < {OUTPUT_DIR}/people.jsonl)
ICP_FITS=$(node -e '
const fs = require("fs");
const fits = new Set(fs.readFileSync("{OUTPUT_DIR}/icp_fits.txt", "utf-8").split("\n").filter(Boolean));
const slug2name = {};
for (const slug of fits) {
  const md = fs.readFileSync(`{OUTPUT_DIR}/companies/${slug}.md`, "utf-8");
  const m = md.match(/^company_name:\s*(.+)$/m);
  if (m) slug2name[slug] = m[1].trim();
}
const want = new Set(Object.values(slug2name).map(s => s.toLowerCase()));
const ppl = fs.readFileSync("{OUTPUT_DIR}/people.jsonl","utf-8").split("\n").filter(Boolean).map(JSON.parse);
console.log(ppl.filter(p => p.company && want.has(p.company.toLowerCase())).length);
')

# Lanes per person: 2 (deep) or 4 (deeper) — match {DEPTH}
LANES=2   # or 4 for deeper
echo "ICP fits: ${ICP_FITS} speakers × ${LANES} = $((ICP_FITS * LANES)) calls"
echo "All:      ${TOTAL} speakers × ${LANES} = $((TOTAL * LANES)) calls"

Then ask via AskUserQuestion — clean two-option choice with the quantified cost on each:

AskUserQuestion(questions: [
  {
    question: "Enrich which speakers?",
    header: "Enrichment scope",
    multiSelect: false,
    options: [
      { label: "ICP fits only", description: "${ICP_FITS} speakers, ~$((ICP_FITS * LANES)) calls (recommended)" },
      { label: "All speakers", description: "${TOTAL} speakers, ~$((TOTAL * LANES)) calls" }
    ]
  }
])

Save the chosen scope as ENRICH_SCOPE=icp_fits or ENRICH_SCOPE=all. If the user picks "All speakers" and TOTAL × LANES > 600, print a warning and ask once more — that's a 10+ minute run with hundreds of tool calls.

Step 8b — Filter and batch
# Build _people_to_enrich.jsonl based on ENRICH_SCOPE
if [ "$ENRICH_SCOPE" = "all" ]; then
  cp {OUTPUT_DIR}/people.jsonl {OUTPUT_DIR}/_people_to_enrich.jsonl
else
  node -e '
const fs = require("fs");
const fits = new Set(fs.readFileSync("{OUTPUT_DIR}/icp_fits.txt", "utf-8").split("\n").filter(Boolean));
const slug2name = {};
for (const slug of fits) {
  const md = fs.readFileSync(`{OUTPUT_DIR}/companies/${slug}.md`, "utf-8");
  const m = md.match(/^company_name:\s*(.+)$/m);
  if (m) slug2name[slug] = m[1].trim();
}
const wantNames = new Set(Object.values(slug2name).map(s => s.toLowerCase()));
const lines = fs.readFileSync("{OUTPUT_DIR}/people.jsonl", "utf-8").split("\n").filter(Boolean);
const keep = lines.filter(l => {
  const p = JSON.parse(l);
  return p.company && wantNames.has(p.company.toLowerCase());
});
fs.writeFileSync("{OUTPUT_DIR}/_people_to_enrich.jsonl", keep.join("\n") + "\n");
console.error(`Enriching ${keep.length} of ${lines.length} speakers`);
'
fi

# Split into ~5-person batches
split -l 5 {OUTPUT_DIR}/_people_to_enrich.jsonl {OUTPUT_DIR}/_batch_people_

Then in a single message, dispatch one Agent call per batch (up to 6 per message) with the prompt from references/workflow.md → "Person Enrichment". Each subagent's prompt should include:

  • {SKILL_DIR}, {OUTPUT_DIR}, {DEPTH} (deep | deeper)

  • {USER_COMPANY}, {USER_PRODUCT}, {ICP_DESCRIPTION}

  • {EVENT_NAME} (from recon.json .title)

  • {LANES} → 2 for deep mode, 4 for deeper mode (substituted into # browse call N/{LANES})

  • {PEOPLE_BATCH} → contents of _batch_people_aa (each line a JSON record from people.jsonl)

Agent dispatch (skeleton, repeat per batch in one message):

Agent(
  description: "Person enrichment batch aa",
  prompt: <Person Enrichment prompt from workflow.md with all placeholders substituted; PEOPLE_BATCH = cat _batch_people_aa>,
  subagent_type: "general-purpose"
)
Agent(
  description: "Person enrichment batch ab",
  prompt: <same template, PEOPLE_BATCH = cat _batch_people_ab>,
  subagent_type: "general-purpose"
)
... up to 6 per message

After all subagents return, verify the people files exist:

ls {OUTPUT_DIR}/people/*.md | wc -l
# Should equal wc -l _people_to_enrich.jsonl

Step 9: Compile Report

Generate the company-grouped HTML index, alternate views, and CSV in one command:

node {SKILL_DIR}/scripts/compile_report.mjs {OUTPUT_DIR} --open

This generates:

  • {OUTPUT_DIR}/index.html — people grouped by company, ranked by company ICP score (opens in browser)

  • {OUTPUT_DIR}/people.html — filterable speaker list (alternate view)

  • {OUTPUT_DIR}/companies.html — ICP-ranked company table with attendees

  • {OUTPUT_DIR}/results.csv — cold-outbound-ready spreadsheet

Then present a summary in chat:

## Event Prospecting Complete — {Event Name}

- **Total speakers extracted**: {count}
- **Unique companies**: {count}
- **ICP fits (score ≥ {threshold})**: {count}
- **Speakers enriched**: {count}
- **Score distribution** (companies):
  - Strong fit (8-10): {count}
  - Partial fit (5-7): {count}
  - Weak fit (1-4): {count}
- **Report opened in browser**: {OUTPUT_DIR}/index.html

Show the top 5 people cards as a markdown table sorted by company ICP score, then offer to:

  • Adjust --icp-threshold and re-run Steps 6-9

  • Export the CSV to a CRM

Files

references/event-platforms.md

Event-Prospecting — Platform Reference

Contents

  • Detection Priority — order recon.mjs probes

  • Next.js / __NEXT_DATA__ — Stripe Sessions class

  • Sessionize — public JSON API

  • Lu.ma — JSON-LD Event block

  • Eventbrite — JSON-LD Event block

  • Custom / Markdown Fallback — last resort

  • Adding a New Platform — contributor guide


Detection Priority

recon.mjs probes the event URL once via browse open + browse eval, then chooses the first matching platform from this list:

  1. Next.js / __NEXT_DATA__ — document.getElementById('__NEXT_DATA__') returns a <script> tag.

  2. Sessionize — <meta name="generator"> content matches /sessionize/i.

  3. Lu.ma — location.hostname matches /lu\.ma/.

  4. Eventbrite — <meta property="og:site_name"> matches /eventbrite/i.

  5. JSON-LD Event — at least one <script type="application/ld+json"> block has @type === 'Event'.

  6. Custom / markdown fallback — none of the above; the extractor uses browse get markdown and parses speaker blocks heuristically.

The order matters: Next.js sites often also embed JSON-LD, so probing __NEXT_DATA__ first gives us the structured data path before falling back to JSON-LD heuristics.


Next.js / __NEXT_DATA__

Detection signature

!!document.getElementById('__NEXT_DATA__')

This script tag is emitted by every getServerSideProps / getStaticProps Next.js page. Its textContent is a JSON blob containing every prop hydrated into the React tree at build/request time — including the speaker list for an event microsite.

Extraction strategy — next-data-eval

recon.mjs walks the parsed JSON looking for arrays whose elements are objects with both a name-ish key AND a linkedin substring somewhere. It records the JSON path of every such array (e.g. .props.pageProps.featuredSpeakers.speakers.items) into recon.nextDataPaths. The Phase B extractor then runs ONE browse eval to harvest those arrays and union them into a single people list.

Sample output shape (Stripe Sessions 2026)

{
  "platform": "next-data",
  "strategy": "next-data-eval",
  "nextDataPaths": [
    ".props.pageProps.featuredSpeakers.speakers.items",
    ".props.pageProps.moreSpeakers.speakers.items"
  ]
}

A typical speaker object inside one of those arrays:

{
  "name": "Patrick Collison",
  "title": "CEO and Co-founder",
  "companyName": "Stripe",
  "linkedInProfile": "https://www.linkedin.com/in/patrickcollison/",
  "bio": "..."
}

Known gotchas

  • The walker also matches talks[N].speakers arrays (a denormalized re-listing of the same speakers per session). recon.mjs filters those out via regex so we don't double-count.

  • Some Next sites lazy-load speakers AFTER hydration. The 2.5s browse wait timeout is usually enough; if a site fails extraction, bump the wait to 5s before declaring it a different platform.

  • Field names vary across sites (companyName vs company vs org, linkedInProfile vs linkedinUrl). The Phase B extractor normalizes via fallback chains.


Sessionize

Detection signature

<meta name="generator" content="Sessionize.com">

Extraction strategy — sessionize-api (stub in v0.1; full implementation in a future phase)

Sessionize exposes a public read-only JSON API at https://sessionize.com/api/v2/{event_id}/view/Speakers. The event ID is in the page URL or embedded JS. v0.1 of recon.mjs only sets strategy: "sessionize-api" and emits the URL — no API discovery yet.

Sample output shape

{
  "platform": "sessionize",
  "strategy": "sessionize-api"
}

Known gotchas

  • Some Sessionize-hosted pages bury the event ID behind a custom domain. We may need to scan the page for sessionize.com/api/v2/... URLs and pull the ID from there.

  • The Sessionize API returns a flat speaker list — much cleaner than scraping Next.js, when it works.


Lu.ma

Detection signature

/lu\.ma/.test(location.hostname)

Lu.ma always serves on lu.ma (or rarely a custom CNAME); the hostname check is decisive.

Extraction strategy — json-ld (stub in v0.1)

Lu.ma embeds an Event JSON-LD block with attendee/speaker info, but the volume of structured data is event-dependent. v0.1 sets strategy: "json-ld" and defers actual extraction to Phase B+. The fallback markdown extractor handles Lu.ma pages reasonably well in the meantime.

Sample output shape

{
  "platform": "luma",
  "strategy": "json-ld"
}

Known gotchas

  • Lu.ma often gates the full attendee list behind a login. Public-facing pages usually only show "featured" speakers, not the full list.

  • Some Lu.ma events are private; recon.mjs should NOT crash if __NEXT_DATA__ isn't present and JSON-LD is empty — it falls through to the markdown strategy.


Eventbrite

Detection signature

<meta property="og:site_name" content="Eventbrite">

Extraction strategy — json-ld (stub in v0.1)

Eventbrite emits standard Event JSON-LD on every public event page. Speakers are usually only in the prose body, not the structured data — Eventbrite is more of an RSVP platform than a speaker-directory platform. We may need to combine JSON-LD parsing with markdown extraction of the description body.

Sample output shape

{
  "platform": "eventbrite",
  "strategy": "json-ld"
}

Known gotchas

  • Eventbrite event pages can be heavy. If browse cloud fetch fails or returns thin content, use browse get markdown instead.

  • Most Eventbrite events do NOT publish a speaker list at all. This platform is low-yield for prospecting.


Custom / Markdown Fallback

Detection signature

None of the above match. recon.mjs sets platform: "custom" and strategy: "markdown".

Extraction strategy — markdown

The Phase B extractor calls browse get markdown, splits the output on heading boundaries (####, ###, ##), and treats each block as a candidate speaker:

  • Line 1: name (must start with capital letter)

  • Line 2: title/role

  • Line 3: company

  • Anywhere in the block: linkedin.com/in/{handle}

This is a best-effort fallback. Coverage is typically 60-80% of the actual speaker list; field accuracy is lower than the structured paths.

Sample output shape

{
  "platform": "custom",
  "strategy": "markdown"
}

Known gotchas

  • Many static event sites use cards (not headings) for speakers. The heading-split heuristic misses those entirely.

  • "Section title" lines (## Speakers, ## Schedule) get parsed as candidate speakers and need to be filtered downstream by checking for the LinkedIn pattern.

  • If markdown extraction yields zero people, the pipeline should surface a "platform unsupported" error rather than emit an empty people.jsonl.


Adding a New Platform

  1. Add a detection branch in recon.mjs probe() after the existing ones. Pick a cheap signal (a meta tag, hostname, or a specific script tag) that's distinctive.

  2. Pick a strategy name — kebab-case verb-phrase like sessionize-api or json-ld-events.

  3. Add an extractor branch in extract_event.mjs that handles the new strategy.

  4. Add a section to this file with: detection signature, extraction strategy, sample output shape, known gotchas.

  5. Drop a fixture under scripts/__fixtures__/{platform}-snapshot.json capturing the expected recon.json shape so future refactors don't silently break extraction.

Keep the detection branches small. If a platform needs more than ~20 lines of detection logic, factor it out into scripts/detectors/{platform}.mjs and import.

Requirements and compatibility

Written for: Claude Code

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Needs: Declares allowed tools, Names Claude Code tools, Needs an API key, Needs Python, Needs Node.js

The author says: Requires browse CLI (`npm install -g browse`) and BROWSERBASE_API_KEY env var. The same `browse` binary covers both API commands and JS-rendered page fallback.

Security

What our scanner noticed· Low risk

  • Instructions that use the network
  • Scripts that your agent may run

This skill includes scripts that your agent may run. Read them before you use it.

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Attribution and licence

Created by
browserbase
Publisher
Browserbase (Official)
Source
browserbase/skills · skills/event-prospecting · commit 6811ca3
Licence
MIT License (redistribution allowed)
  • ATTRIBUTION.md (written by AutoGineer)
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The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download event-prospecting.zip