Memra PHP SDK

Official PHP SDK for the Memra Memory API -- persistent, searchable memory for AI agents and LLM applications. Privacy-first and EU-native.

Since 4.5.0 the SDK version tracks the Memra platform version.

What's New in 4.5.0

Read-your-writes: every write response includes a revision token; pass it to recall(waitForRevision:) to guarantee the write is indexed before recall runs.
Conflicts on write: create responses include conflicts -- memories the new fact contradicts (when contradiction detection is enabled).
Token-budget recall: recall(maxTokens:) trims results to fit a token budget.
Recall filters: notTags, since, until for tag-exclusion and time-window recall.
Feedback loop: report which recalled memories were actually used via memories()->feedback() or inline with recall(usedIds:) -- boosts future scoring.
Entity graph API: entities()->list() and entities()->memories() make the entity graph queryable.
Read-only scoped keys: the API now supports read-only scoped API keys -- use one with this SDK for recall-only integrations (write calls will be rejected by the server).

Requirements

PHP 8.1+
Guzzle 7.5+ (ships with Laravel)

Installation

composer require memra/sdk

Configuration (Laravel)

The SDK auto-discovers via Laravel's package discovery -- no manual registration needed.

Set your API key in .env:

MEMRA_API_KEY=memra_live_your_key_here
MEMRA_PROJECT_ID=my-project

Optionally publish the config file:

php artisan vendor:publish --tag=memra-config

This creates config/memra-sdk.php where you can customize base_url, timeout, and project_id.

Using config:cache? Publishing the config file is recommended -- it guarantees the SDK's settings are part of your cached configuration. Remember to re-run php artisan config:cache after installing or updating the SDK.

Quick Start (Laravel) -- 5 Minutes

1. Install

composer require memra/sdk

2. Configure

Add to your .env:

MEMRA_API_KEY=memra_live_your_key_here
MEMRA_PROJECT_ID=my-project

3. Store a Memory

use Memra\Sdk\Facades\Memra;

$memory = Memra::add(
    content: 'User prefers dark mode and TypeScript',
    tenantId: 'user_123',
    projectId: 'my-project',
    type: 'preference',
    importance: 8,
    tags: ['ui', 'language'],
);

echo $memory->id; // mem_01HXYZ...

4. Recall Memories

$results = Memra::recall(
    query: 'What does the user prefer?',
    tenantId: 'user_123',
    projectId: 'my-project',
    limit: 5,
);

foreach ($results->data as $memory) {
    echo "{$memory->content} (score: {$memory->score})\n";
}

5. Delete a Memory

Memra::delete('mem_01HXYZ');

Quick Start (Plain PHP)

use Memra\Sdk\MemraClient;

$client = new MemraClient(apiKey: 'memra_live_your_key_here');

// Store a memory
$memory = $client->memories()->add(
    content: 'User prefers dark mode',
    tenantId: 'user_123',
    projectId: 'my-project',
    type: 'preference',
    importance: 8,
);

// Recall memories
$results = $client->memories()->recall(
    query: 'What does the user prefer?',
    tenantId: 'user_123',
    projectId: 'my-project',
);

// List memories
$list = $client->memories()->list(
    tenantId: 'user_123',
    projectId: 'my-project',
);

// Delete a memory
$client->memories()->delete($memory->id);

API Reference

Memories

// Via Facade (Laravel)
Memra::add(content, tenantId, projectId, type?, importance?, tags?, source?, metadata?);
Memra::recall(query, tenantId, projectId, limit?, types?, tags?, minImportance?, minScore?, includeRecency?, rerank?, waitForRevision?, maxTokens?, notTags?, since?, until?, usedIds?);
Memra::list(tenantId, projectId, type?, tags?, minImportance?, limit?, offset?);
Memra::delete(id);

// Via Client (Plain PHP or Laravel)
$client->memories()->add(...);
$client->memories()->recall(...);
$client->memories()->list(...);
$client->memories()->get(id);
$client->memories()->update(id, content?, importance?, tags?, metadata?);
$client->memories()->delete(id);
$client->memories()->bulkDelete(tenantId, projectId?);
$client->memories()->batch(memories);          // Up to 100 per call
$client->memories()->supersede(id, content, metadata?);
$client->memories()->chain(id);                // Get supersession chain
$client->memories()->promote(id, targetNamespace?, promotedBy?);  // -> PromotionResult
$client->memories()->refresh(id);              // Reset staleness -> HealthStatus
$client->memories()->feedback(tenantId, projectId, memoryIds);  // -> ['updated' => int]

Write responses (v4.5)

Every write returns a Memory DTO with:

revision (int) -- read-your-writes token; pass to recall(waitForRevision:)
embeddingStatus (string) -- embeddings are async: 'pending' until indexed
conflicts (array) -- on create, memories the new fact contradicts (empty unless contradiction detection is enabled)

$memory = $client->memories()->add(
    content: 'User switched to PostgreSQL',
    tenantId: 'user_123',
    projectId: 'my-project',
);

// Read-your-writes: this recall is guaranteed to see the write above
$results = $client->memories()->recall(
    query: 'What database does the user run?',
    tenantId: 'user_123',
    projectId: 'my-project',
    waitForRevision: $memory->revision,
);

Recall options (v4.5)

$results = $client->memories()->recall(
    query: 'deployment preferences',
    tenantId: 'user_123',
    projectId: 'my-project',
    maxTokens: 2000,                    // token-budget recall
    notTags: ['archived'],              // exclude by tag
    since: '2026-01-01T00:00:00Z',      // time window
    until: '2026-06-30T23:59:59Z',
    usedIds: ['mem_01ABC'],             // feedback from previous recall
);

Feedback loop (v4.5)

Report which recalled memories were actually useful -- they get a scoring boost on future recalls:

$result = $client->memories()->feedback(
    tenantId: 'user_123',
    projectId: 'my-project',
    memoryIds: ['mem_01ABC', 'mem_02DEF'],
);
echo $result['updated']; // 2

Or save a round trip by passing usedIds on the next recall() call.

Projects

$client->projects()->create(name, description?);
$client->projects()->list(limit?, offset?);
$client->projects()->get(id);
$client->projects()->delete(id);

Webhooks

$client->webhooks()->create(url, events, secret?);
$client->webhooks()->list();
$client->webhooks()->delete(id);

Bootstrap

$client->bootstrap()->get(agentId, tenantId?, projectId?, maxTokens?, includeTypes?, excludeTypes?, recencyDays?);
$client->bootstrap()->configure(agentId, config);
$client->bootstrap()->showConfig(agentId);

Health

$client->health()->memory(id);       // Single memory health status
$client->health()->refresh(id, note?); // Reset staleness score
$client->health()->namespace(tenantId?, projectId?); // Namespace-level health

Audit

$client->audit()->list(filters?);
$client->audit()->export(format?, filters?);  // CSV or JSON

Erasure

$client->erasure()->create(tenantId, reason?); // Erasure request
$client->erasure()->show(id);

Export

$client->export()->account(format?);           // Full account export
$client->export()->namespace(tenantId, projectId?, format?);

Entities (v4.5)

Query the entity graph built by the intelligence pipeline:

// List entities for a namespace (most-mentioned first)
$entities = $client->entities()->list(
    tenantId: 'user_123',
    projectId: 'my-project',
    entityType: 'person',  // optional filter
    limit: 50,             // optional (max 200)
);

foreach ($entities as $entity) {
    echo "{$entity->name} ({$entity->type}): {$entity->memoryCount} memories\n";
}

// List memories mentioning an entity (metadata only, no content)
$result = $client->entities()->memories(
    name: 'Jane Doe',
    tenantId: 'user_123',
    projectId: 'my-project',
);
// $result = ['entity' => 'Jane Doe', 'memories' => [...], 'total' => 3]

PII entities appear under their stable IDs, never raw values.

Usage

$client->usage()->get();

Privacy & Data Protection

Memra is privacy-first. The PHP SDK provides access to data export and erasure endpoints.

Data Export

// Export all account data
$data = $client->export()->account();
echo $data->exported_at;

// Export namespace data (per-tenant)
$data = $client->export()->namespace('tenant_123');

// Export namespace data filtered by project
$data = $client->export()->namespace('tenant_123', projectId: 'proj_1');

Data Erasure

// Request erasure of a memory
$request = $client->erasure()->create('mem_abc123');
echo $request->status; // 'pending'

// Check erasure status
$status = $client->erasure()->show('mem_abc123');
echo $status->status; // 'completed'

Erasure is thorough: flat files, database index rows, Redis cache entries, and audit log entries are all purged. The erasure request is tracked with a scheduled deletion date and completion status.

Memory Types

Type	Description
`fact`	Factual knowledge (e.g., "User works at Acme Corp")
`event`	Time-bound occurrences (e.g., "User deployed v2.0 on March 15")
`pattern`	Behavioral patterns (e.g., "User always reviews PRs before merging")
`working`	Short-term context, auto-expires after 24 hours
`decision`	Decisions with supersession chains (e.g., "Switched from MySQL to PostgreSQL")
`preference`	User preferences (e.g., "Prefers dark mode")
`context`	Contextual information (e.g., "Currently working on Project X")
`entity`	Entity references (e.g., "User's manager is Jane Doe")

Error Handling

All API errors throw typed exceptions:

use Memra\Sdk\Exceptions\MemraAuthException;
use Memra\Sdk\Exceptions\MemraNotFoundException;
use Memra\Sdk\Exceptions\MemraValidationException;
use Memra\Sdk\Exceptions\MemraQuotaException;
use Memra\Sdk\Exceptions\MemraServerException;
use Memra\Sdk\Exceptions\MemraTimeoutException;

try {
    $memory = Memra::add(
        content: 'Important fact',
        tenantId: 'user_123',
        projectId: 'my-project',
    );
} catch (MemraAuthException $e) {
    // 401 -- invalid or missing API key
    echo "Auth error: {$e->getMessage()}";
} catch (MemraValidationException $e) {
    // 422 -- validation errors with per-field details
    foreach ($e->errors as $field => $messages) {
        echo "{$field}: " . implode(', ', $messages) . "\n";
    }
} catch (MemraQuotaException $e) {
    // 429 -- rate limited
    echo "Rate limited. Retry after {$e->retryAfter} seconds.";
    echo "Remaining: {$e->remaining}";
} catch (MemraNotFoundException $e) {
    // 404 -- resource not found
    echo "Not found: {$e->getMessage()}";
} catch (MemraServerException $e) {
    // 500/502/503 -- server error
    echo "Server error ({$e->statusCode}): {$e->getMessage()}";
} catch (MemraTimeoutException $e) {
    // Connection timeout
    echo "Request timed out: {$e->getMessage()}";
}

All exceptions extend MemraException and include statusCode and responseBody properties.

Testing

Use Memra::fake() in your tests to avoid making real API calls:

use Memra\Sdk\Facades\Memra;

test('it stores a user preference', function () {
    $fake = Memra::fake();

    // Your application code that calls Memra::add()
    storeUserPreference('user_123', 'dark mode');

    // Assert the memory was stored
    $fake->assertAdded();

    // Assert with specific criteria
    $fake->assertAdded(fn (array $args) =>
        $args['content'] === 'User prefers dark mode'
        && $args['type'] === 'preference'
    );
});

test('it recalls memories during conversation', function () {
    $fake = Memra::fake();

    getRelevantContext('user_123', 'What do I prefer?');

    $fake->assertRecalled();
});

test('it handles empty state', function () {
    $fake = Memra::fake();

    // Nothing should happen in this test path
    $fake->assertNothingSent();
});

Available Assertions

Method	Description
`$fake->assertAdded(?callable)`	Assert `add()` was called, optionally matching a callback
`$fake->assertRecalled(?callable)`	Assert `recall()` was called, optionally matching a callback
`$fake->assertDeleted(?string $id)`	Assert `delete()` was called, optionally for a specific ID
`$fake->assertNothingSent()`	Assert no calls were made

License

MIT License. See LICENSE for details.

Name		Name	Last commit message	Last commit date
Latest commit History 1 Commit
config		config
src		src
tests		tests
.gitattributes		.gitattributes
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md
composer.json		composer.json
phpstan.neon		phpstan.neon
phpunit.xml		phpunit.xml

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Memra PHP SDK

What's New in 4.5.0

Requirements

Installation

Configuration (Laravel)

Quick Start (Laravel) -- 5 Minutes

1. Install

2. Configure

3. Store a Memory

4. Recall Memories

5. Delete a Memory

Quick Start (Plain PHP)

API Reference

Memories

Write responses (v4.5)

Recall options (v4.5)

Feedback loop (v4.5)

Projects

Webhooks

Bootstrap

Health

Audit

Erasure

Export

Entities (v4.5)

Usage

Privacy & Data Protection

Data Export

Data Erasure

Memory Types

Error Handling

Testing

Available Assertions

License

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